Home Ventilation & Indoor Air Quality

A SUPPLEMENT TO CONTRACTING BUSINESS MAGAZINE Home Ventilation & Indoor Air Quality

A guide to providing comfort and better living environments CIRCLE 30 ON READER SERVICE CARD Contents

Why Ventilation? 4 Benefits of Good Ventilation 5 Providing Whole-House Solutions 6 About the Home Ventilating Institute (HVI) The Image Bank 8 Ventilating Living Areas Bathrooms Kitchens Other Rooms Continuous, Whole-House Ventilation: Heat and Energy Recovery Ventilators 10 Whole-House Fans 18 Attic Ventilation 20 Crawl Spaces Publishing Offices: 22 For More Information 1300 East 9th Street Cleveland, OH 44114-1503 Contact HVI 216/696-7000 www.contractingbusiness.com 22 Alex Carney, PUBLISHER, Contracting Business Mike Murphy, EDITOR-IN-CHIEF, Contracting Business Determining Capacity/Ventilation Lisa Murton Beets, SUPPLEMENT EDITOR Gwen Hostnik, GROUP MARKETING DIRECTOR, Contracting Guidelines Business Lois Walsh, PRODUCTION MANAGER, Contracting Business Angela Vannucci, Custom Media Group 23 Lynn Cole, MEDIA SERVICES MANAGER, Custom Media Group Manufacturers’ Resources The Image Bank Dave Bosak, ART DIRECTOR, Custom Media Group Copyright© 2001,Penton Media Inc. COVER IMAGE: THE IMAGE BANK 25 Manufacturers’ Directory 28

www.hvi.org 1 A Note from the Home Ventilating Institute

ounded in 1955, HVI today surance by many agencies includ- represents a wide range of ing the U.S. Department of Hous- F home ventilating products in- ing and Urban Development, U.S. cluding bathroom fans, kitchen Department of Energy – Bon- range hoods, downdraft kitchen neville Power Administration, Na- fans, inline fans, heat/energy tional Building Code of Canada, recovery ventilators, single and R2000 Housing Program – Canada, multiport exhaust fans, exterior- Washington State Building Code, mounted fans, balanced ventila- Minnesota State Building Code, tors, whole-house cooling fans, powered attic Building Officials and Code Administrators ventilators, passive fresh air inlets, and static International (BOCA), International Confer- ventilation devices for attics and crawl ence of Building Officials (ICBO), and the Na- spaces. tional Electrical Manufacturers Association. Today, HVI Certified products are sold by In March 1999, HVI launched a two-phase 58 companies in the U.S., Canada, Asia, and Sound Refinement Program. Improvements Europe, producing more than 85% of the include a new sound test laboratory, up-to- residential ventilation products sold in North date methods and equipment, and a compre- America. hensive field verification of product perfor- HVI’s Certified Rating Programs were cre- mance. We are currently winding down with ated to provide a fair and credible method of both phases. Products that have completed comparing ventilation performance of similar the refinement testing will carry new, more products. Not only are products certified, but accurate, and reliable “HVI 2100” Certified a random verification program ensures that Ratings. those products continue to meet their origi- We hope you find this Guide a practical re- nal performance. Laboratories independent source for learning more about the products of any manufacturer perform all testing for produced by HVI members and how you can certification and verification. The test stan- apply them to create more healthy, comfort- dards utilized for testing are, in most cases, able living environments. developed by HVI using national and international consensus methods A complete list of Sincerely, certified products, manufacturers, and products can be found in the Certified Product Di- rectory at the HVI Web site (www.hvi.org). HVI certification has been accepted and recognized as the method of performance as- Dale Rammien Director of HVI

For more information, contact: Home Ventilating Institute (HVI) 30 West University Drive Arlington Heights, IL 60004-1893 Phone: 847-394-0150 Fax: 847-253-0088 E-mail: [email protected] www.hvi.org

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ONE PANASONIC WAY, PANAZIP 4A-6, SECAUCUS, NJ 07094 (866) 292-7292 • FAX (800) 553-0384 www.panasonic.com CIRCLE 31 ON READER SERVICE CARD www.hvi.org 3 Every home needs ventilation – to protect people from unhealthy indoor pollutants and to protect the house from excess moisture and heat. Good ventilation also contributes to occupant comfort.

oday’s homes are built tight, which helps make them more energy-efficient. However, without an appropriately designed, installed, and maintained venti- T lation system – which translates into a lack of fresh air – occupants can suffer a multitude of negative consequences. When many consumers think of buying, building, or updating a home, they all too often focus on aesthetic features rather than factors such as the quality of the indoor air. In fact, according to the American Lung Association, in 1999 85% of Amer- icans didn’t realize the air in their homes might be a health hazard. The good news, however, is that more are becoming increasingly aware of the importance of indoor air quality and health. Slowly but surely, they are demanding better comfort and healthier air – and who better to satisfy their needs than HVAC contractors and builders? Ventilation is a system of exhaust and supply that creates a flow of air. Effective systems require a proper balance of exhaust and supply air. A good home ventilating system provides a wide array of benefits, which are highlighted in this Guide. Addi-

4 H V G tionally, offering these systems gives HVAC contrac- Moisture tors and builders an edge. Those who discuss the Too much moisture can cause allergy benefits of proper ventilation with their customers problems and structural damage by encouraging and prospects – and show them how to achieve it – the growth of mold, mildew, bacteria, dust demonstrate a sincere regard for the customer, per- mites, dry rot, and insects. haps opening their eyes to considerations the compe- tition isn’t even mentioning. Common Household Chemicals • Cleaning supplies • Paints and solvents THE BENEFITS OF GOOD • Formaldehyde from furniture, VENTILATION carpet, and building materials There have been more than 17 million single fam- • Pesticides ily homes constructed since the late 1970s. Built and • Volatile organic compounds insulated to be extremely tight, they are also those • Odors homes with the highest incidences of indoor air quality problems. Particles Common pollutants from the home, people, and • Dust and dust mites contents, along with temperature and humidity con- • Pet dander • Pollen ditions, can create an unhealthy environment. They • Lead • Asbestos include:

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www.hvi.org 5 Ventilation Guide

Tobacco Smoke These factors come together to enhance the com- A health risk to smokers and non- fort and indoor air quality of the home and to help smokers alike – children are especially at risk. keep occupants safe. A quality ventilation system also contributes to preserving the structural in- Combustion Products tegrity of the home, reduced maintenance costs, These are produced by fuel-burning and adding to the home’s value. heating equipment, gas water heaters, fireplaces, Strategies for use throughout a home, as depicted woodstoves, gas ranges, and candles, and in Figure 1, include: include: 1. Local ventilation – for bath, kitchen, and • Carbon monoxide • Carbon dioxide other moisture- or odor-producing areas. • Nitrous oxides • Soot 2. General ventilation – to remove stale, pol- • Unburned fuel • Moisture luted air and bring in outdoor air. May be provided by using local ventilation fans and intakes, or Heat centrally ducted continuous ventilation systems Overheating in the attic from sun such as heat or energy recovery ventilators exposure. (HRVs/ERVs). 3. Proper placement of vents and ventilators Ventilation systems and components are – to protect the attic and crawlspace. designed to: Manufacturers of home ventilation products try • Remove excess moisture; to ensure that their products are simple and require • Remove airborne chemicals, particles, little to no maintenance. However, no matter how tobacco smoke, and odors; well products are made, it’s up to the HVAC con- • Help keep humidity levels in proper balance; tractor to select the right products for the particular • Help control combustion byproducts; and application and to install them properly. It’s also im- • Keep attics under control to avoid water portant that contractors educate customers about damage in the winter and overheating in the importance of regularly scheduled system the summer. checkups to ensure that the entire home comfort system is operating efficiently, as intended.

3 PROVIDING WHOLE-HOUSE SOLUTIONS Tomorrow’s most successful contractors will be 1 providers of “whole-house” solutions. Ventilation is 2 an important part of that mix. No matter how ter- rific the core equipment offering is – be it a furnace, 2 boiler, air conditioner, heat pump, etc. – the home 1 will not achieve maximum comfort without proper, balanced ventilation. 3 It’s always a good idea to periodically evaluate an 2 existing home’s ventilation system. HVAC contrac- 1 tors can conduct these evaluations when they are in a home: • Providing preventive maintenance services Figure 1. Typical conditions found in a home, as well as the (e.g., during annual checkups). strategies – 1) local ventilation, 2) general ventilation, and • Diagnosing a failing system near the end of its 3) vents/ventilators – that may be applied to address them. useful and/or efficient life.

6 H V G

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Asthma, allergies, and other respiratory ailments are serious problems affecting millions of people nation- Contractors who exceed customer expectations wide. And considering that people spend about 90% of often gain the image of the “comfort expert.” These their time indoors (65% in their homes), it’s no surprise contractors develop repeat business, referrals, gen- that researchers study the affects of indoor air on these ailments. erate service agreements, and often win “customers According to 1998 data presented by the American for life.” Lung Association (ALA), 26 million Americans have New construction is another area where ventila- been diagnosed with asthma in their lifetimes. Of these, 8.6 million are under age 18. Hospitalizations tion awareness is important. Today’s builders must be due to asthma have increased 25% since 1979, and in tune with ventilation, now more so than ever. Build- asthma deaths increased 109% between 1979 and ing codes and requirements are dire components of 1998. their business. Good builders prefer to work with sub- Researchers have no definitive answers to explain the dramatic rise in asthma – the issues are complex. contractors who know the requirements, know how While certainly not the only factor, tight homes – built to properly select and apply ventilation components, since the 1970s to address energy-efficiency issues – and who can be relied upon to provide quality instal- without proper ventilation have been suspected as a culprit in contributing to the rise in respiratory ailments lations. Additionally, when contractors keep up with over the last two decades. the ventilation market – and can be there to educate According to results of a 1996 ventilation product builders, prospects, and homeowners about it – they manufacturer’s survey of homeowners in the U.S. snowbelt region, 8% of residents in homes built before save those builders the time required to become their 1971 had asthma. That number increased to 17% for own “ventilation experts.” residents of homes built between 1985 and 1996. Builders who discuss home ventilation with their The findings also suggested a greater incidence of customers also set themselves apart from the com- respiratory ailments in homes built after 1971 (45%), compared to those built before 1971 (34%). petition. In a market where the home’s indoor air Furthermore, the survey showed that in 58% of the quality and comfort are rarely or briefly discussed, homes, at least one humidity-related or respiratory consumers appreciate learning about these issues. problem was present in the form of allergies, asthma, persistent coughs, and/or nasal congestion. In 36% of When builders address these topics, it demonstrates the homes, at least one household member suffered that they care about the customer’s well-being, com- from at least one respiratory ailment. fort, and satisfaction, as well as the home’s mainte- In its educational literature, ALA stresses that ventilation is an important strategy for helping to alleviate nance costs and value in years to come. Many tools the symptoms of asthma, allergies, and other respiratory are available today to help builders learn more ailments. Along with incorporating proper ventilation about ventilation as well as how to educate con- strategies in the home, ALA also recommends sumers about it. controlling trigger sources and cleaning the air.

ABOUT HVI The Home Ventilating Institute • Responding to calls about a lack (HVI), a division of the Air Movement of comfort and/or allergy or res- and Control Association (AMCA), is a piratory problems. nonprofit association representing 58 In addition to providing an evalua- companies that sell HVI Certified tion during a call for service, HVAC home ventilating products. Its mis- contractors may offer ventilation sion is to serve consumers and mem- evaluations as a separate service. If a bers by advancing residential ventila- homeowner calls for an inspection, the contractor tion. HVI offers a variety of services including, but may also evaluate the home’s heating and cooling not limited to, the development of test standards equipment. Even if it’s in good condition, a relation- and certification programs for airflow, sound levels, ship is established, and the homeowner may look to and watts for bath, kitchen, and indoor air quality the contractor to provide more “whole-house” solu- fans and energy performance for heat and energy re- tions and services in the future. covery ventilators; participation in selected build-

8 H V G Types of Fans Bathrooms, Kitchens, and Other Rooms

Many types of fans are available to meet any application requiring local ventilation. They include: • CEILING-MOUNTED FANS – These fans are mounted in the ceiling between joists and discharge either vertically through the roof or horizontally through the exterior wall. • FAN-LIGHTS – These fans offer the convenience of built-in illumination in combination with bathroom ventilation. They are installed in the ceiling and use 3- or 4-in. round duct. • EXTERIOR-MOUNT FANS for ceilings or walls – These mount outside the building and pull, rather than push, the air through the duct. Much of the mechanical sound stays outside, so these fans maintain a low sound level inside the house. • INLINE FANS – Duct-mounted, these fans are available in single-port or multiport versions to exhaust air from several areas with one main fan, located remotely (for more information, see the sidebar on page 14). • WALL FANS – Made to be located in and exhausting through an outside wall. The fans are installed without any ducting and may have integral switches and outside weather hoods that close when the fan is turned off. • RANGE HOODS – A fan with an enclosure designed to capture odors and humidity from a cooking surface. Most range hoods are located over the cooking surface and have an internal fan, but there are also downdraft units designed to pull air across the cooking surface, as well as hoods designed for remote-mounted fans.

Control options. A wide variety of controls are available. They include electronic variable- speed controls, timers, humidistats, and dual fan-light and/or fan-heater combinations.

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CIRCLE 34 ON READER SERVICE CARD www.hvi.org 9 Ventilation Guide

ing code activities; and market support. HVI holds With the information, users can compare rated numerous meetings throughout the year to discuss performance. The products in the Certified Prod- and address industry issues. ucts Directory bear the HVI Tested/Certified label, Through a Certified Ratings Program, HVI pro- so users can be confident that the products function vides a voluntary means for residential ventilation as stated. manufacturers to report comparable and creditable All HVI ratings for fans are based on independent product performance information based on uni- tests at the AMCA lab located in Arlington Heights, formly applied testing standards and procedures IL. Each fan is tested under specific air resistance performed by independent laboratories. Together and other conditions related to actual application, these activities help to promote the health and as distinct from “free air” or other nonstandard conditions. Home ventilating fans carry dual ratings, for quietness as well as ventilating performance. Sim- ple, validated numbers provide the air movement in CFM and the sound output in sones. CFM simply means the number of cubic feet of air that a fan will move in one minute. The sone is an internationally recognized unit of loudness, which simplifies reporting of sound output. The sones translate laboratory decibel readings into numbers that correspond to the way people sense loudness. Sone readings offer a quick, easy, and accurate way to compare sound levels. In technical terms, the sone is equal to loudness The Image Bank to a pure tone of 1,000 cycles per second at 40 deci- growth of the home ventilation industry while pro- bels above the listener’s threshold of hearing. Dou- viding consumers with valuable information and ble the sone is double the loudness. In everyday confidence in their choices. terms, one sone is approximately equivalent to the HVI members gladly provide information to con- sound of a quiet refrigerator in a quiet kitchen. So tractors, builders, and homeowners about how to the lower the sone rating the quieter the fan. properly choose and apply their products. The HVI No matter what their intended task, you can de- Web site (www.hvi.org) lists all the association’s pend on products with the HVI label to provide the members and includes links. The downloadable performance for which they are rated. Certified Products Directory, available at the Web site, is updated every 30 days. It is divided into three VENTILATING LIVING AREAS main sections: • Home Ventilating Fans – Lists certified air A home’s interior living area may be ventilated by flow and sound ratings for bath fans, ceiling/wall ex- using two strategies: haust fans, exterior-mount room ventilators, inline 1) Applying local, or “intermittent,” ventilation in fans, range hoods, downdraft ranges, power attic bathrooms, kitchens, and other rooms with fans ventilators, and whole-house fans. that exhaust polluted air to the outdoors, combined • Static Products (Non-Electrically Powered in some cases with intakes that provide outside Ventilating Devices) – Lists certified net free area in makeup air. square inches for gable end, roof, sidewall, and un- 2) Applying continuous ventilation for the entire dereave ventilators. living area with whole-house ventilators that con- • Heat and Energy Recovery Ventilators – Lists stantly work to expel old air and bring in fresh, con- certified ventilation and energy performance data. ditioned air.

10 H V G If the problem is ventilation… The quiet solution is Fantech.

or years, Fantech has been providing products to solve But there’s more… Fventilation problems in residential applications. Fans Fantech’s highly-trained technical support staff is at your and accessories manufactured to exacting standards for service. Not an automated line, but real people who can quality and performance. Products designed to answer the advise you on the right way to tackle the problem at hand. demands of today’s homeowners for improved indoor air Plus, Fantech’s customer service representatives are always quality. Products that provide powerful yet quiet ventilation available to help expedite your order to meet your schedule. because the fan is located away from the living area. Add it all up and it’s a combination that can’t be beat. Whether it’s dryer boosting, bathroom exhaust, kitchen So, next time you need residential ventilation products, ventilation, or radon mitigation… call Fantech. Fantech has the solutions. We think you’ll find working with us a breath of fresh air.

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CIRCLE 35 ON READER SERVICE CARD Ventilation Guide

of making repairs to correct problems that could have been prevented in the first place.

Attractive Options to Complement Decor Today there are many attractive options for bath fans. Existing homes – where old fans may be inef- fective and noisy – can benefit from upgrades. In new construction, bathroom ventilation products can be used to complement the interior design, in styles ranging from simple to lavish. All bathroom exhaust fans have the ability to free the room of moisture many times faster than with no fan at all. Bathrooms are required by code to have either an operable window or a minimum 50 CFM capacity exhaust fan. Fans should be installed as near To begin, let’s look at the first strategy, applying to the shower as possible and, if marked as suitable local ventilation. for this location, directly over it to capture the moisture as directly as possible. BATHROOMS For specific types of products available for the Moisture control where it’s needed most bath, see the sidebar on page 9. During a bath or shower, the humidity level in a bathroom is like that in a tropical rain forest – KITCHENS uncomfortable, hot, and destructive. Unless the bathroom is properly ventilated, all Cooking and gathering in comfort that moisture has no place to go but into cracks and Kitchens are one of the most popular gathering crevices, into plaster and drywall, through ceiling places in homes today. Cozy and comfortable, they fixtures into the attic insulation, roof sheathing, and serve as a place to relax, cook, catch up on daily framing members. events, and make plans. Excess moisture has tremendous potential for For all the warm images a kitchen may conjure, damaging the home. It can cause deterioration of joists and framing above the bathroom. It cracks and peels paint, ruins gypsum wallboard, causes exterior paint failure, warps doors, and rusts cabinets and fixtures. As it condenses on walls, ceilings, and cabinets, it attracts dirt and makes more frequent cleaning and decorating necessary. It encourages mildew on tile grout and generally provides an environment for increased bacterial growth. Exhaust fans, ducted to the outside to remove moisture, are designed to expel excess humidity and prevent these types of problems in bathrooms and spa areas. Not only will occupants be more comfortable after a bath, shower, or jacuzzi, but the room will also be rid of odors, potentially health-hazardous aerosol vapors, and other pollutants. Additionally, the potential for home damage will be minimized, saving the homeowner the cost

12 H V G The Image Bank something hidden lingers – pollution! In fact, kitchens louvers in the front of the hood. These filters must may be a main source of pollutants in a home. Con- be regularly cleaned according to the manufac- sider all the grease, smoke, undesirable odors, and turer’s recommendations. moisture generated during the cooking process – A range hood should be the same width as the pollutants that cling to walls, ceilings, carpeting, up- cooking surface and mounted directly over it at a holstery, and drapes – requiring frequent cleaning height of 18 to 30 inches above the cooking surface. and all the troubles and expense that entails. A wide array of products is available to keep kitchens ventilated properly. They include updraft range hoods, downdraft ventilators, and exhaust fans – all designed to keep the air fresh and the environment comfortable.

Updraft Range Hoods and Downdraft Cook Top Ventilators Updraft range hoods not only expel heat, smoke, moisture, and odors quickly and directly, they are also attractive additions to the kitchen. Today they are available in a variety of styles, designer col- ors, or metal finishes. Most provide bright cooktop lighting that also can be turned down for a sub- tle night light. Updraft range hoods are installed directly over the range. A fan or blower pulls heated air, moisture, smoke, and odors up- ward, and exhausts them to the outside via ductwork through walls, soffits, or attics, between joists, or beneath the ceiling. An aluminum mesh screen filter traps grease and can easily be removed and cleaned. Sometimes ducting to the outdoors is not possible. In such cases, ductless hoods are available. These models incorporate an activated carbon filter as well as an aluminum filter and return filtered air to the kitchen through

CIRCLE 36 ON READER SERVICE CARD www.hvi.org 13 Ventilation Guide Inline Fans

Inline fans present an attractive option Units are available with two-speed control or with for homeowners who want to locate the variable speed to provide a choice of a lower speed fan away from the room or rooms that need exhausting. and quieter operation when lower air movement is Inline fans are duct-mounted blowers. required. Sone ratings and CFM ratings vary. The The fan has both an inlet and an outlet appropriate CFM is determined by evaluating the duct, which originate at the interior and on the exterior of the house, respectively. If cooking unit and the occupants’ cooking habits. the unit is located in an attic, for instance, More demanding cooks usually require more CFM it can be further defined as remote- to handle loads resulting from things such as the mounted. moisture generated by boiling large pots of water or Inline fans may be used for several applications, including: the smoke resulting from grilling or using a wok. • To ventilate wet spaces such as What about cooking surfaces in peninsulas or is- bathrooms, kitchens, and laundries; lands? They may be ventilated with downdraft ven- • As remote fans for range hoods; • As duct boosters for ventilation tilators, which are installed behind the cooktop. systems and clothes dryers; These ventilators pull air down and push it out • As supply or exhaust fans for con- through an exhaust duct that often runs under the tinuous whole-house ventilation; and • In radon mitigation systems. floor and then to the exterior of the house. Down- Inline fans are offered in many different draft ventilators are available with electronic con- configurations, sizes, and capabilities to trols that may include time delay and filter-cleaning meet air quality needs. They are available indicators. They are stylishly designed to comple- as simple single-port versions or versatile multiport versions. Single-port units have ment today’s modern kitchens. one incoming supply duct and one Kitchen exhaust fans may be used along with outgoing exhaust duct. Multiport versions range hoods. They create a fresh air flow during pe- have multiple ducts but always at least one inlet and one exhaust. These fans are riods when the cooking surface is not being used. housed within either a box-like shell or a Manufacturers should be consulted to determine molded bladder-like casing. The single fan the best installation location. The majority of can then orchestrate air movement to or from multiple locations (e.g., two kitchens in newly built homes are equipped with bathrooms). By varying duct sizes, range hoods. Older homes present an opportunity inserting “Y” fittings to branch duct runs, for new installations of either updraft or downdraft employing adjustable grille openings, and ventilation. However, if neither is an option, home- varying the fan speeds, different ventilation rates may be achieved for each owners may select kitchen exhaust fans, which will location served by the fan ducts. Multiport provide good general ventilation in the kitchen. versions offer ventilation capacity For information about the fans available for appropriate for larger-scale single-family, multifamily, and commercial buildings. kitchens to complement range hoods, see the side- Inline fans are available in a range of bar on page 9. airflow capacities from about 100 CFM, suitable for most housing needs, to 2,000 CFM. Manufacturers offer a variety of OTHER ROOMS sizes, flow capacities, ducting configurations, controls, and accessories. Better air for breathing In addition to the areas Control options. Remote, inline fans can be controlled in various ways. On-off we’ve looked at so far, there switches are common, but more are plenty of other rooms in complicated controllers such as variable- the house that can benefit speed controls, mechanical timers, or sensors are gaining popularity. Motion, from ventilation. Examples in- humidity, carbon dioxide, and air pressure clude laundry and utility sensors can improve the operation of any rooms, workshops/hobby ar- ventilation system when properly integrated. eas, family, and recreation rooms. Removing hot air, to-

14 H V G CIRCLE 37 ON READER SERVICE CARD Ventilation Guide

bacco smoke, odors, fumes, and humidity from Other areas to ventilate include utility rooms, these rooms – and encouraging air movement and a workshops, hobby areas, and family and recreation fresh air supply – means economical comfort and rooms. These are prime places for fumes from better air quality for the entire family. cleaning products, construction materials, glues, Ventilation units for use in these areas are similar and tobacco smoke to accumulate. They may also to those used for baths and kitchens. They are avail- suffer from moisture and humidity problems, able in a wide range of CFM capacities and are styl- whether or not they are located in basements. ishly designed to complement any decor. One of the most important areas in the home to CONTINUOUS WHOLE-HOUSE ventilate is the laundry room. Consider all the mold VENTILATION and mildew that can accumulate in this area, be it from damp clothes, splashing water, or other factors. Heat and energy recovery ventilators Then there is the heat being exhausted from the Our discussion now moves on to using continu- clothes dryer. A ducted exhaust fan installed near the ous ventilation to condition the entire living area. washing machine gets rids of heat and moisture that Continuous, whole-house ventilation can be pro- can make laundry an unwelcome chore. vided by single and multi-port exhaust fans, air ex- While dryers must be vented to the outside, many changers, and heat or energy recovery ventilators newer homes have laundry rooms located away (HRVs or ERVs). from exterior walls. This means the duct to exhaust Heat and energy recovery ventilators bring in the dryer to the outside is longer. In these cases, fresh air from the outside while exhausting stale air booster fans are usually required to push the air out from the inside. They transfer energy between the effectively. two airstreams and distribute it to the home’s living areas. The fresh air conditions and improves the indoor air quality as well as occupant comfort, especially for those who suffer from allergies and respiratory ailments. HRVs are usually recommended for colder climates with longer heating seasons. ERVs are preferred for warmer, humid climates with longer cooling seasons.

How They Work HRVs. Mechanically, the HRV is a combination of fans, controls, and heat recovery elements that exhaust stale air from the A continuous, balanced home, bring fresh air in ventilation system brings in from outdoors, and transfer fresh air from the outside heat energy from one while exhausting stale air from the inside. airstream to the other. An HRV provides a continuous

16 H V G Inlets: An Option for Providing Makeup Air

It’s important to ensure that exhaust air is replaced supply of fresh air to the home, while recovering a by outside air. If this is not addressed, a building can portion of the energy normally lost through nonheat be depressurized. Air that would normally flow out recovery ventilation. chimney flues, water heaters, or furnaces can become sources of supply air to replace the fan-exhausted air. In the winter, heat from the stale exhaust air is Dangerous concentrations of lethal exhaust gases can captured by the heat recovery element and trans- then be drawn into the home. ferred to the cold incoming air. In the summer, in- Inlets, also known as trickle ventilators, are interior space ventilators designed to provide fresh air from coming air is cooled by the outgoing, air condi- the outdoors (makeup air) to replace (compensate for) tioned exhaust air. that which is exhausted out. Inlets are available for HRVs have filters that minimize the entry of walls or windows in mechanical or nonpowered pollen and dust, and keep insects from entering the versions that occupants can adjust themselves. Standard self-regulating and humidity-controlled air home with the fresh air. They may be used year- versions are available. Features typically include round. Models suitable for use in extremely cold adjustable airflow (volume and direction), insulation to climates are equipped with automatic defrost mech- eliminate condensation and reduce sound penetration, and dust and insect filters. anisms, allowing continuous operation throughout The introduction of fresh makeup air helps keep the winter months. relative humidity levels under control and contributes HRVs are available as stand-alone units for con- to a healthy atmosphere. nection to independent ductwork, or they may be connected to existing forced air heating and cooling systems. Properly selected, installed, operated, and maintained, an HRV will:

CIRCLE 38 ON READER SERVICE CARD www.hvi.org 17 Ventilation Guide

• Exhaust indoor pollutants and help to maintain time, fresh outdoor air is drawn in from outside. good indoor air quality, These two air columns flow past one another • Provide a continuous supply of fresh, filtered, through an enthalpic core, where heat and moisture and tempered outdoor air to the home recovery occur. Warm, fresh air is then distributed • Recover heat from exhaust air in winter, throughout the home. • Control excess humidity, During the cooling season, the reverse happens. • Cool incoming air in summer, and The cool indoor air is exchanged with the warm in- • Provide an energy-efficient means for reducing coming air, reducing the temperature of the supply acute indoor air-pollutant problems such as air. Additionally, moisture from the outdoors is radon, formaldehyde, excess moisture, or odors. transferred into the exhaust air stream before it reaches the house. This reduces the load on the air conditioner, enabling it to control the humidity more effectively, which can reduce operating costs.

Selecting a Model There are many different models of HRVs and ERVs, each with its own advantages and uses. To select the right model for your application, consult HVI’s Certified Products Directory, which contains performance-testing reports for HRVs and ERVs. Units that appear in the Directory bear the HVI label. Airflow is an important consideration when selecting an HRV, as the unit’s first function is ventilation. It is critical to select a unit suitable for use in the given climate. In cold climates, the unit’s frost protection must be sufficient enough to ensure proper performance throughout the winter. Other factors that affect selection include “sensi- ble heat recovery efficiency,” controls, type of defrost system, and power consumption. To determine the best choice for your area, contact HVI manufacturers who have many years of ex- perience with H/ERVs. Control options. The controls for continuous ventilators range from simple to complex. HRVs are available with controls that permit variable ventilation rates, automatic high-speed operation (when ERVs. ERVs are capable of reducing the moisture bathrooms are in use, for example), automatic oper- content of the fresh incoming air. As a result, they ation to control excess humidity, timed operation, can reduce the load on the air conditioning system and even air-quality sensors. In any case, continu- during summer operation. ous low-speed operation is recommended. During winter, ERVs provide a continuous supply of fresh air while simultaneously discharging stale WHOLE-HOUSE FANS indoor air. For successful winter operation, ERVs must be equipped with a suitable defrost mecha- Cost-effective comfort for the entire home nism. Vents installed throughout the home draw in- Whole-house fans provide an effective way to door pollutants and vent them outside. At the same improve comfort in the entire house without air

18 H V G Take the guesswork out of troubleshooting HVAC problems for you and your customers. Enalasys™, in partnership with Honeywell • Technicians are equipped with a complete International, offers the escanACTM escanACTM system...exciting, easy-to-use, computerized diagnostic tool that provides data-driven diagnostic tools. a complete analysis of indoor comfort, air • Customized reports show the homeowner or building owner the causes of their quality and HVAC energy efficiency. discomfort – and verifies the agreed upon resolution of their problems. Joining the Certified Contractor Network • National network of certified contractors receive training, technical support of the Honeywell-Enalasys Alliance, offers and marketing assistance. Available in limited markets. you a turnkey program that will position • Increase sales by up to 33% by selling repair services, enhanced systems your company for the future and and upgrades. begin generating For more information call 1-877-419-3738 or visit www.enalasys.com added revenue Available in limited markets. immediately! Be a leader in your market area... Join the Certified Contractors Network of the Honeywell-Enalasys Alliance today! CIRCLE 39 ON READER SERVICE CARD

"The Source for The choice is clear... Certified Residential Whether you are ventilating a beautiful bathroom, an elegant kitchen, a whole house for better indoor air quality or a hot attic, To access up-to-date Certified performance HVI can help you select the best information and to ventilation solutions with learn more about confidence. ventilation opportunities and benefits, contact HVI at: www.hvi.org Spruce ans HVI More than 85% of the residential 30 West University Dr. Indoor Ventilation Arlington Hts., ventilation products sold in IL 60004-1893 North America are produced by Phone 847-394-0150 Fax: 847-253-0088 800-355-0901 HVI members. E-mail: [email protected] 978-521-0901 www.spruce.com

CIRCLE 40 ON READER SERVICE CARD CIRCLE 41 ON READER SERVICE CARD www.hvi.org 19 Ventilation Guide

conditioning. If the home has air conditioning, whole- turn off the fan and close the windows and house fans may help reduce energy costs because the doors to store the cool air inside the house. air conditioner doesn’t have to work as hard. Closing the drapes, especially on the sunny Available in various models to fit any home, side, also helps keep the house cool. whole-house fans allow the house to “breathe A note about homes with air conditioning: By freely” when summer breezes, if they are blowing at quickly and thoroughly ridding a closed-up house of all, are not strong enough to cool the house. A prop- hot air before the air conditioner is turned on, a erly located whole-house fan draws outside air whole-house fan can reduce air conditioning operating costs and help prolong compressor life. Whole-house fans are mounted in one of three ways: • Horizontally – suspended on joists over a ceiling opening in a central location and concealed by a ceiling grille or a shutter with automatically opening louvers. • Vertically – usually installed in a gable end with a motor-operated ceiling grille in a central location. • Through the wall or roof in houses that have no attic or houses with flat or hip roofs without sufficient static vent areas. Whole-house fans are modular, requiring only minimal on-site assembly; manufacturers usually provide tem- plates for cutting ceiling, gable, or wall through screened windows and doors, pulls it up openings. through the house, and exhausts it, usually through Control options. Timers and thermostats are static vents in the attic. The result is a mild, cooling available for starting and shutting off fans automati- breeze throughout the house that can lower skin cally. Two- speed and infinite-speed controls are temperature by two to eight degrees – a significant available on some models. cooling effect. In the evening, the fan provides relief from the day’s heat by flushing the house with cool ATTIC VENTILATION night air as the outdoor temperature drops. Here’s how they work: The advantages of air movement • In the early evening, or when the temperature beneath the roof outside is 82°F or less, the homeowner opens Ideally, an attic ventilation system should be in- the windows and turns on the fan. cluded when a house is built. If not, its importance • Later in the evening, the homeowner closes the is so strong that the homeowner should seriously windows and doors in unoccupied areas and consider a retrofit, especially if they are replacing opens the bedroom windows so the air flows the roof. only through the bedroom areas. Reducing the heat buildup, which can reach • In the morning, the homeowner opens the win- 150°F on hot summer days, is only one reason to dows and lets the fan draw in cool air until the properly ventilate an attic. Perhaps more important outside temperature rises, at which time they is the long-term economic value. Attic ventilation is

20 H V G the most important factor in preventing weather-induced home deterioration. Heat and humidity can weaken the home’s structural integrity and can cause plaster and drywall problems and exterior paint failure. The high costs of energy and of home repairs and maintenance alone should be in- centive enough for the homeowner to make sure the attic is properly ventilated. The purpose of attic ventilation is to FPG International equalize temperatures inside and outside the attic throughout the year. In summer, this equalization of temperatures helps make the Powered and Static Attic Ventilators living areas beneath the attic cooler and more com- The principle of attic ventilation is simple: Place fortable; this can help reduce how hard the air air vents at or near the roof peak to allow warm air conditioner needs to work, thus reduce its to escape and intake vents in the soffit or under- operating costs. This equalization also means the at- eaves to allow outside air to enter the attic area. tic won’t get so hot that the heat will distort and Attics may be ventilated with power ventilators destroy roof shingles and cause the premature dete- or by employing a system of fixed static vents. rioration of roof boards, sheathing, siding, and insu- Powered attic ventilators (PAVs) force air out of lation. In winter, equalizing attic temperatures with outside temperatures prevents moist air, which seeps into cold areas from below, from condensing on the cold underside of roof surfaces and on beams and rafters. This condensation causes mildew, rotting of wood, and excessive rusting of fasteners and other metal components. It soaks insulation and can diminish its effectiveness. One of the most apparent signs that an attic needs to be ventilated is the formation of “ice dams” in the winter. These occur when snow hits a home’s roof where the sloping sides are warm. The snow then melts down the sides and piles up at the eave area of the roof, where it’s colder. Here the mounds of snow often drip and form icicles. Some homeowners mistakenly think these problems are due to their gutters.

CIRCLE 42 ON READER SERVICE CARD www.hvi.org 21 Ventilation Guide

the attic and are usually equipped with automatic they must be in balance. thermostats, which activate the unit at a preselected Manufacturers offer guidelines for determining temperature. An optional humidistat is also avail- which type of static vents are suitable for the partic- able to start the unit to remove excess moisture. ular application, which often is related to the type of They are mounted near the roof peak on the back roof on the house. Static ventilators are also available for installation in side walls to reduce peeling of siding paint or moisture damage.

CRAWL SPACES Preventing damage and unhealthy conditions Crawl spaces need to be ventilated to prevent damaging and unhealthy conditions from developing. Foundation vents are designed to remove condensed moisture on the underside of the floor that leads to mildew and rot. The vents should have a minimum PhotoDisc net free area equal to 1/150th of the ground area in the crawl space, or 1/1,500th if the crawl space has a slope of the roof, where they are less visible from vapor barrier and one such ventilation opening is the street, or high on a gable wall. within three feet of each corner of the structure. Static vents, both intake and exhaust, are non- Foundation vents may also be used to remove the electrically powered and depend on natural air flow moisture and odors from unconditioned basements. for movement. Intake vents are necessary whether Crawl spaces may also be vented using an exhaust using a static exhaust system or a powered ventilator. fan. The minimum code prescribed ventilation rate Static exhaust vents include ridge vents, is 20 CFM per 1,000 square feet of floor area. roof vents, gable vents, and turbines. • Ridge vents are installed at the peak of the roof, FOR MORE INFORMATION... often along its entire length. Roof vents cover holes cut in the roof near the peak to let air escape The HVI Web site (www.hvi.org) is a good start- and to prevent rain, snow, and insects from entering point for anyone interested in learning more ing the attic. about home ventilation. • Gable vents, generally triangular or rectangular At the Web site you will find the downloadable in shape, have either adjustable louvers to fit a Certified Products Directory, which is updated wide range of roof pitches or fixed louvers for a every 30 days. The HVI Web site also provides de- specific pitch. They are mounted at the highest tailed information on ventilation rates and strate- point of the gable. gies for specific areas in the home, and contains • Turbines are wind-driven ventilators. Under links to product manufacturers. certain wind conditions, they can reduce air Keep in mind that building codes in different ar- pressure in the stack and draw air from the attic eas call for different ventilation requirements, so it’s space. important to keep current with the local situation. The intake vents, necessary to balance the Also, different climates require different design systems, are: strategies. • Undereave, cornice, or soffit vents. HVI members are ready to assist by providing To be effective, both intake and exhaust vents code and design information for their ventilation must be present to promote air movement, and products.

22 H V G Determining Capacity

Ventilation Guidelines • Toilet 50 CFM Because fans have differing capacities for moving • Shower 50 CFM air, it is important to make sure the fan has ample • Bath tub 50 CFM capacity for the application. The fan’s certified CFM • Jetted tub 100 CFM rating appears on the product or on the HVI label displayed on each unit, in the manufacturer’s litera- Enclosed toilet rooms must have an operable ture describing the fan, and in the HVI Certified window or a fan. Exhaust points should be over or Products Directory available at www.hvi.org. near the shower or tub and in an enclosed toilet To help you determine the minimum fan capacity room. Bathroom doors need to have sufficient clear- required, consider the following guidelines. ance to the finished floor to allow entry of makeup air. A timer should be used to ensure that ventilation Bathrooms, Kitchens, continues for a minimum of 20 minutes after use of and Other Rooms the bathroom. For adequate ventilation, HVI recommends the For steam showers, a separate fan in the steam following guidelines for ventilation rates: room that can be turned on after use is recom- Bathrooms (intermittent ventilation) mended. • Small (up to 100 square feet) – 1 CFM per Bathrooms (continuous ventilation) square foot, approximately 8 air changes/hr. Ventilation may also be provided on a continuous • Large (over 100 square feet) – add up the basis at a minimum of 20 CFM in lieu of a 50 CFM needs of each fixture: fan.

The Ins and Outs of Attic Ventilation

Installing an effective attic ventilation system is simple. If you have the knowledge, and the right products. Get both from CertainTeed. Air Moving Products and Accessories CertainTeed offers a full line of intake and exhaust ventilation products, so whether you go with power or if you want the best performing ridge vents on the market, we’ve got you covered. And, our technical experts can provide help when you need it, at 1-800-527-1924. Advanced design. Proven performance. Ventilation solutions™ www.fanam.com [email protected]

www.certainteed.com CIRCLE 43 ON READER SERVICE CARD CIRCLE 44 ON READER SERVICE CARD www.hvi.org 23 Ventilation Guide

Kitchens and offsets typical nonoccupied areas. 15 changes/hr. for general ventilation. For proper ventilation and efficient operation, Recommended range hood ventilation rates vary any whole-house ventilator requires adequate, un- greatly and depend on the type of cooking performed. obstructed outlets in the attic through soffit vents, The minimum rates are 40 CFM per lineal foot for a grilles, or louvers. hood placed along a wall and 50 CFM per lineal foot To calculate the amount of attic exhaust area you for island hoods. HVI recommends 100 CFM per lineal will need, divide the fan’s capacity in CFM by 750. foot for wall-mounted hoods and 150 CFM for island Example: 4,800 CFM divided by 750 = 6.4 square feet hoods. Hoods equipped with multiple speed settings of attic exhaust area required. allow low-level, quiet ventilation for light cooking to Powered Attic Ventilators be combined with effective ventilation when needed. Downdraft hoods require high ventilation rates Powered attic ventilators should provide at least 10 since the steam and odors have to be pulled across air changes/hr. Multiply the total square footage of the the cooktop instead of being captured by a hood. The attic by 0.7 to get the minimum CFM necessary. For ventilation rates depend on the design and height of dark roofs, add 15% to this number. For particularly the unit, and HVI recommends the cooktop manufac- steep roofs, a slightly higher rating is recommended. turer’s recommendations be followed. Only soffit vents should be used as fresh-air intakes Other Rooms for powered attic ventilators. Gable vents should not 6 changes/hr. be used, as rain and snow can be drawn into the attic. To calculate the total minimum vent intake area, di- Heat and Energy Recovery vide the CFM of the powered attic ventilator by 300 Ventilators and multiply the result by 144. This will give you the For continuous indoor air quality ventilation, a net free area, in square inches, that should be in- heat or energy recovery ventilator should be oper- stalled. A minimum of one square foot of inlet area for ated to provide .15 air changes per hour. The com- every 300 CFM of HVI Certified fan capacity is re- plete occupied volume of the house must be consid- quired for proper fan operation. ered in this calculation. In addition to this minimum, Static Attic Ventilation continuous ventilation rate, H/ERVs often have ad- ditional capacity which can be used to boost venti- HVI recommends that 60% of the net free area of lation rates as required to meet the occupants’ the required ventilation be placed at the undereave needs. These needs could occur as a result of a gath- location and 40% at the roof or gable location. HVI ering of people; smoking; a hobby or activity using guidelines recommend one square foot of ventilator paint, glues, or other air-quality contaminants; or for net free area for each 150 square feet of attic floor any other reason to improve indoor air quality. space. When an adequate ceiling vapor barrier is Local codes may require different continuous used, the net free area may be reduced by one-half. ventilation rates – always check with your building If no ceiling vapor barrier is used, the net free area officials to determine your specific requirements. of ventilation should be doubled. To Calculate Net Free Area Whole-House Ventilating Fans To determine static ventilation needs, first mul- The recommended minimum capacity for whole- tiply the attic length by attic width to find square house fans is based on the HVI guideline, which re- feet, then divide that number by 300 to find requires one complete air change every two minutes quired net free area. Because most vents are within the occupied area. This may be determined marked in square inches of net free area, multiply by multiplying the gross square footage of the entire the above number by 144. The total of static vents house (including nonoccupied areas like closets) by you install should equal that number in total square 3. Be sure to include the “upstairs” area of multi- inches. If no vapor barrier is used, multiply the to- level homes. This formula assumes an 8-ft. ceiling tal square inches by two.

24 H V G Resources

FV- homes and control indoor 11VQD2 pollutants, while circulating fresh features a air at maximum energy efficiency. high-speed Specs are included. It is control for downloadable from spot www.renewaire.com. BATHROOM HEATERS exhaust while the lower speed is – RenewAire LLC The three-in-one DHVL multi- utilized for continuous whole- Circle 121 function bathroom heater mounts house ventilation. – Panasonic in the ceiling to provide 1,400 Circle 118 watts of fan-forced heat, 70 CFMs of ventilation, a ceiling light, plus Directional Heat Discharge that allows homeowners to direct heat where they want it. – NuVent Circle 115

VENT LIGHT PANASONIC’S WEB SITE The VLC-64 Vent Light with its Panasonic’s Web site spotlights small-scale grille and halogen light the company’s ventilating fans is an attractive option for today’s including WhisperCeilingTM, baths/showers. One or more can WhisperLiteTM, and be paired with a remote-mounted WhisperWallTM. Features such as Fantech Exhaust Fan to quietly MEET NUVENT energy efficiency, quiet operation, and effectively ventilate the bath NuVent’s Web site introduces you and long life are highlighted. to protect it from the damaging to the company, which produces a – www.panasonic.com/buildings effects of moisture, mold, and complete line of ventilation Circle 119 mildew. – Fantech products that provide solutions Circle 122 for all home ventilating needs – from bathrooms to kitchens ERV to specialty applications. CONTROL – www.nuventproducts.com RenewAire Circle 116 introduces its PT24, proportional time control, for its EV130 and EV200 residential energy recovery ventilators (ERVs). The AIR IN MOTION homeowner or installer may set Any time you need “air in motion” the control to provide proper for residential or commercial ventilation rates, as determined ventilation projects, look to from house size and a simple Fantech’s Web site at IMPROVED IAQ www.fantech-us.com. You’ll find Nutech Energy Systems Inc. chart. Features include easy installation and single-speed complete information on Fantech produces LIFEBREATH products, remote-mount fans and which it highlights at its Web site. operation. – RenewAire LLC Circle 120 ventilators from 108 to 6,993 CFM The site also explains health and and TurboFlo commercial indoor air quality issues, has a ventilators up to 45,000 CFM. FAQ section, describes how to ALL-PURPOSE – www.fantech-us.com assess needs, and more. Circle 123 – www.lifebreath.com HOME Circle 117 VENTILATION This brochure TWO-SPEED FANS explains how HEALTHY HOMES Panasonic’s Two-Speed Ceiling- RenewAire Venmar Ventilation Inc.’s Web site Mount Ventilating Fans offer low energy recovery features products including range noise levels, low input ventilators hoods, attic ventilators, whole- wattage, long motor life, and (ERVs) can house recovery units, and two-speed controls. Model prevent moisture damage in filtration systems – all while

www.hvi.org 25 Resources

addressing important issues about indoor air quality and VENTILATORS HRVs & MORE strategies for keeping a home Soler & Palau, S.A.’s Web site Therma-Stor Products, Div. of healthy. – www.venmar- showcases products it distributes DEC-Intl., manufactures heat ventilation.com including axial, centrifugal, inline recovery systems, ventilation Circle 124 fans, kitchen hoods, and more. systems, and dehumidifiers. There is a product search section Residential-specific products COMMERCIAL HRVs and detailed catalogs that may highlighted at its Web site include be downloaded. supply and exhaust ventilation – www.soler-palau.com systems, fresh air inlets, spot Circle 127 ventilation products, heat recovery ventilators, and inline INLINE FANS tube fans. Spruce offers – www.thermastor.com inline fans for Circle 130 applications including bathroom American ALDES offers small to exhaust, fresh mid-capacity commercial heat air supply, recovery ventilators (HRVs) for laundry room providing effective ventilation to exhaust, dryer remove indoor air pollutants, boosting, kitchen exhaust, duct with a balanced fresh air supply boosting, and more. Fans are compact and lightweight, and DISTRIBUTOR ON THE WEB tempered by a heat recovery Learn more about the products core. A wide range of models, may be mounted remotely. Several are rated for continuous National HVAC Products with air flows from 500 to 2,500 Inc./Airex Inc. distributes at its CFM is available to meet a variety operation. – Spruce Environmental Technologies, Web site. They include heat of ventilation requirements. recovery and ventilation units; air – American ALDES Ventilation Inc. Circle 128 diffusers, grilles, and registers; Corp. gas detection systems; Circle 125 commercial and industrial intake and exhaust fans; variable air DUCT FANS volume terminals; and This more. – www.airex.on.ca Circle brochure 131 spotlights ALDES’ Duct Fan “P” Series in-line centrifugal fans for BROAN.COM residential Find over 15 different product applications, which may be lines including bath fans, range selected for single or dual hoods, inline fans, ventilators, chimes, and more at Broan- exhaust or supply point COMFORT/EFFICIENY applications. The fans may be NuTone LLC’s Web site. Discusses indoor air quality and MONITORING/CONTROL mounted outdoors or in wet EnalasysTM technology allows locations. – American ALDES includes several resources to learn more, including a CD, and a contractors to diagnose comfort Ventilation Corp. and efficiency levels in homes and Circle 126 dealer and product search function. – www.broan.com light commercial buildings. An Circle 129 online monitoring system is also

26 H V G Resources

available, which may be offered to 9,000 BTU indoor customers who want to monitor units connect to the conditions at all times. Both one outdoor are explained at the company’s condensing unit. Web site. – www.enalasys.com The new dual- Circle 132 zones complement the existing dual 12,000 BTU A/C system and FREE VIDEO ON RIDGE VENTING have standard features such as Auto Restart, WHISPER TM “The Principles of Ridge Vent Auto Louver, a Sleep Timer, and more. – COOL FANS Performance” fully explains how Fujitsu General America, Inc. Whisper Cool to construct an effective attic Circle 135 Gable- Mount ventilation system using ridge Power Attic vents. The video details how ridge Ventilators are vents are designed and why some DUAL-ZONE in a housed applications are more effective APPLICATIONS patented Wall-mounted air than others. For your free copy, series of rings conditioners and heat call 1-800 AIR-VENT or visit instead of a solid metal cylinder. pumps, universal and www.airvent.com. – Air Vent The rings allow air to move ceiling-suspended air Inc., a CertainTeed Company through the fan with less conditioners, and dual- Circle 134 restriction, resulting in a quieter, zone air conditioners are more efficient operation. Learn highlighted in this more at www.certainteed.com. MULTI-ZONE DUCTLESS brochure. It discusses applications and – CertainTeed SYSTEMS provides complete specifications. – Fujitsu Circle 133 Fujitsu has added to its line of General America, Inc. multi-zone ductless systems. Two Circle 136

Multi-Zone Ductless Systems The possibilities are infinite. With Fujitsu’s new line of multi-zone air conditioners and heat pumps you can now do more than you ever thought possible with conventional A/C systems.

Built in features like: Auto Swing Louver, Power Diffuser and four fan speeds; help create true Zone-Conditioning rather than single room cooling.

With its onboard computer it knows when to turn on, when to change fan speeds and even when to turn itself off; all to optimize efficiency.

FUJITSU GENERAL AMERICA, INC. www.fujitsugeneral.com Toll Free: (888) 888-3424 Ext. 489 The Intelligent Choice in Comfort

CIRCLE 45 ON READER SERVICE CARD www.hvi.org 27 Manufacturers’ Directory

The following companies Suite G-4 London, ON N5W 4C8 Fax: 973-439-1002 provided advertising Sarasota, FL 34234 Canada www.soler-palau.com support for this Guide: Phone: (941) 359-3616 Phone: (519) 457-1904 Contact: Carl Gordano Fax: (941) 359-3523 Fax: (519) 457-1676 Ceiling Fans, Powered Attic www.fanam.com www.lifebreath.com Ventilators, Static Roof Contact: Marion Pye Contact: Roger Johnson Ventilators, Exterior-Mount AMERICAN ALDES InLine Fans, Kitchen Ex- Ceiling Fans/Wall Fans, Fan Room Ventilators, Fan VENTILATION CORP. haust Fans, Bathroom Ex- Heaters, InLine Fans, Bath- Heaters, Fan Controls, 4537 Northgate Court haust Fans, Blowers room Exhaust Fans, Inline Fans, Kitchen Sarasota, FL 34234-2124 HRVs/ERVs Exhaust Fans, Bathroom Phone: (941) 351-3441 FANTECH, INC. Exhaust Fans, Blowers, Fax: (941) 351-3442 1712 Northgate Blvd. NUVENT INC. Range Down Drafts, Range www.americanaldes.com Sarasota, FL 34234-2112 9624 Cincinnati-Columbus Rd. Hoods, Static Gable End Contact: Dwight Shackelford Phone: (941) 351-2947 Cincinnati, OH 45241 Ventilators Exterior-Mount Room Ven- Phone #2: (800) 747-1762 Phone: (513) 777-8846 tilators, InLine Fans, Fax: (941) 359-3828 Fax: (513) 777-8483 SPRUCE HRVs/ERVs www.fantech-us.com www.nuventproducts.com ENVIRONMENTAL Contact: Kathie Perry Contact: Kathie Perry TECHNOLOGIES, INC. BROAN-NUTONE LLC Fan Controls, InLine Fans, Powered Attic Ventilators, 187 Neck Rd. 926 W. State St. Kitchen Exhaust Fans, Fan Heaters, Fan Controls, Ward Hill, MA 01835-8027 Hartford, WI 53027-1098 Bathroom Exhaust Fans, Kitchen Exhaust Fans, Phone: (978) 521-0901 Phone: (800) 548-0790 Fan Lights Bathroom Exhaust Fans, Fax: (978) 521-3964 Fax: (262) 673-8638 Fan Lights, Range Hoods www.spruce.com www.nutone.com FUJITSU GENERAL Contact: Roger Zucchino Contact: Karen Collins AMERICA, INC. PANASONIC Inline Fans, Kitchen 353 Rt. 46 West HOME & COMMERCIAL Exhaust Fans, Bathroom CERTAINTEED CORP. Fairfield, NJ 07004 PRODUCTS CO. BUILDING Exhaust Fans 3000 West Commerce St. Phone:(888) 888-3424 GROUP Dallas, TX 75212-4842 Fax: (973) 575-2194 1 Panasonic Way THERMA-STOR Phone: (800) 527-1924 www.fujitsugeneral.com Secaucus, NJ 07094-2999 PRODUCTS Fax: (800) 635-7006 Contct: Mark O’Donnell Phone: (866) 292-7292 A DIVISION OF www.certainteed.com Ceiling Fans/Wall Fans, Fan Fax: (800) 553-0384 DEC-INTERNATIONAL Contact: Marianne Horvat Heaters, Whole-House www.panasonic.com 1919 S. Stoughton Rd. Powered Attic Ventilators, Fans, Blowers Contact: Brian Kiel (53716-2299) Static Roof Ventilators, Fan Heaters, InLine Fans, P.O. Box 8050 Whole-House Fans, Static NATIONAL HVAC Bathroom Exhaust Fans, Madison, WI 53708-8050 Undereave and Sidewall PRODUCTS INC./AIREX Fan Lights Phone: (608) 222-5301 Ventilators, Static Gable INC. Fax: (608) 222-1447 End Ventilators 5 Sandhill Court, Unit #C RENEWAIRE LLC www.thermastor.com Brampton, ON L6T 5J5 2201 Advance Rd. ENALASYS (AFFILIATE, Canada Madison, WI 53718-6761 VENMAR VENTILATION HONEYWELL INC.) Phone: (905) 790-8667 Phone: (608) 221-4499 INC. 1885 Douglas Dr. Fax: (905) 790-1133 Fax: (608) 221-2824 550 Lemire Blvd. North Golden Valley, MN Contact: Enzo Iantorno www.renewaire.com Drummondville, QC 55422-3992 InLine Fans, Bathroom Contact: Michael Brandt ERVs J2C 7W9 Canada Phone: (763) 954-5819 Exhaust Fans, Passive Phone: (819) 477-6226 Fax: (763) 954-4440 Ventilation Devices SOLER & PALAU, Inc. Fax: (819) 475-2660 www.honeywell.com 16 Chaplin Rd., Unit #903 Contact: Rene Dionne NUTECH ENERGY P.O. Box #637 HRVs/ERVs FAN AMERICA, INC. SYSTEMS INC. Pine Brook, NJ 07058 1748 Independence Blvd. 511 McCormick Blvd. Tel: 888-272-1302

Other companies that offer HVI Carrier Corp. Mitsubishi Electric and Snappy Air Distribution Certified products. Diversi-Plast Products Electronics USA Inc. Products For detailed contact information, visit: Domus Ventilation Limited Nu-Air Ventilation Systems Inc. Stirling Technology, Inc. www.hvi.org/manufacturers Fuji Industrial USA, Inc. Nutone Inc. Taiwan Sakura Corp. Aeroflo Inc. Headrick Building Products Owens Corning Tele-Flow, Inc. Air for Life, Inc. Kanalflakt Canada, Inc. Profilair Titon, Inc. Air Movement Group Ltd. Kanalflakt, Inc. Powrmatic of Canada Ltd. Trent Metals Ltd. Arabian Co. for Fans Mfg. Ltd. Kool-O-Matic Corp. Raydot Inc. Universal Metal Industries, Inc. B/S/H Home Appliances Corp. Lennox Industries (Canada) Ltd. Reversomatic Heating and Mfg., Viking Range Corp. Brock, Inc. Marley Engineered Products Ltd. W.W. Grainger Inc. Bryant Heating and Cooling Milcor Limited Partnership Rheem Air Conditioning Div. Weatherking Air Conditioning Div. Systems Mitsubishi Electric Sales Ruud Air Conditioning Div. York International Unitary Butler Ventamatic Corp. Canada Inc. Sears Indoor Clean Air Services Products Group

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