2016 ENERGY CODE Residential Ace Title 24, Part 6 Resores at eet HVAC Alterations

What is a Residential HVAC Alteration? A residential HVAC alteration is any change to a home’s space-conditioning system that is regulated by Title 24, Part 6, which include systems that provide heating, or cooling within or associated with conditioned spaces in a home. The 2016 Building Energy Efficiency Standards (Energy Standards) Title 24, Part 6 include requirements for alterations affecting residential space-conditioning systems, which are generally categorized in the following three groups: • Altered or Replaced Systems • Altered Space-Conditioning System • Entirely New or Complete Replacement Space-Conditioning System Why? As much as half of the energy used in a typical home goes to heating and cooling. Ensuring that HVAC systems are as efficient as possible can result in significant energy savings. Relevant Code Sections Title 24, Part 6 Building Energy Efficiency Standards: • Section 110.2 – Mandatory Requirements for Space-Conditioning Equipment • Section 150.0 – Mandatory Features and Devices – 150.0(h) – Space-Conditioning Equipment – 150.0(i) – – 150.0(m) – Air-Distribution and Ventilation System Ducts, Plenums, and Fans • Section 150.1 – Performance and Prescriptive Compliance Approaches for Newly Constructed Residential Buildings • Section 150.2 – Energy Efficiency Standards for Additions and Alterations to Existing Low-Rise Residential Buildings – 150.2(b)1C – New or Complete Replacement Space - Conditioning System – 150.2(b)1D – Altered Duct Systems - Duct Sealing – 150.2(b)1E – Altered Space-Conditioning System - Duct Sealing – 150.2(b)1F – Altered Space-Conditioning System - Mechanical Cooling Altered or Replaced Duct Systems (Duct Sealing) • Extension of Existing Ducts – > 40 ft of extended duct system • Entirely New or Replacement Ducts – 75% of new duct system ≥ Supply Flex Duct System, incl. starter collars, y's, etc. – Up to 25% existing duct system components Plenum may be reused, if accessible and can be sealed Alteration/Extension

Note: ≤ 40 ft of altered or extended duct does not trigger >40 feet of ducts Boot Boot compliance documentation or duct leakage testing. Register Register

It must meet mandatory R-6 insulation only. Supply Plenum Flex Duct System, incl. starter collars, y's, etc. Table 150.2-A Duct Insulation R-Value New/Replacement Boot Boot Climate 1 through 10, ≥75% new duct system 11, 14 through 16 Register Register Zone 12 & 13 Figure 1: Altered or Replaced Duct Systems (Duct Sealing): Duct R-Value R-6 R-8 §150.2(b)1D

Energy Code Ace Heling o la or ards rigt 2016 Title 24, Part 6 - Residential HVAC Alterations Page 1 of 4 2017-01-09 Altered Space-Conditioning Duct Sealing and Testing System (HERS measure) Not entirely new or complete replacement space-conditioning system and any of the following components is installed or Duct Sealing and Testing (HERS measure) is required for both replaced: altered duct systems and new/replacement duct systems. • Any -containing component, including: • Extension of Existing Ducts >40 ft: The measured – Cooling coil leakage must be ≤ 15% of system air flow. – Condenser coil (There are alternatives to meeting the maximum 15% – Refrigerant piping leakage. Consult your Building Department or Section – Refrigerant metering device 150.2(b)1Diib). – Outdoor condensing unit • Altered Space Conditioning System: The measured OR leakage must be ≤ 15% of system air handler air flow. • Air handler (There are alternatives to meeting the maximum 15% OR leakage. Consult your Building Department or Section • 150.2(b)1E). In addition, the system must have a cooling coil Replacing other components is considered a repair - not an airflow >300 CFM per ton of nominal cooling capacity and alteration. For example, replacing the blower wheel , but not verified by the HERS Rater. Refrigerant Charge verification the heat exchanger or air handler in the , is a repair. is Prescriptively required for Climate Zones 2 and 8-15. • New/Replacement Space Conditioning System: OR Supply Plenum Flex Duct System, incl. starter collars, y's, etc. The Duct Sealing and Testing (HERS measure) must OR OR Altered demonstrate a leakage rate ≤ 5% of the system air handler Cooling Coil Any refrigerant- containing component: airflow. In addition, verification of Cooling Coil Airflow and Indoor Unit Refrigerant Metering Cooling coil Boot Boot Fan Watt Draw (HERS measure) is required. The system Device Condenser coil Air Handler Compressor Register Register must have cooling coil airflow >350 CFM per ton of nominal OR Refrigerant piping Refrigerant metering cooling capacity, and an air-handling unit fan efficacy≤ 0.58 Heat device OR OR W/CFM. Refrigerant Charge verification is Prescriptively Exchanger OR OR Air handler required for Climate Zones 2 and 8-15. OR Suction Line Heat Exchanger Condenser Coil Return Liquid Line Compressor Plenum [RETURN DUCTS] OR Outdoor Unit Figure 2: Altered Space-Conditioning System: §150.2(b)1E,F Setback Thermostats: §110.2 Only altered or new/replacement cooling systems trigger Entirely New or Complete installation of setback . It is not required for Replacement Space-Conditioning heating-system-only replacements. System Equipment Efficiency: §110.2 All of the following are installed or replaced: Most heating and cooling equipment installed in California homes • All the system heating/cooling components is regulated by the National Appliance Efficiency Conservation Act • > 75% new duct material (NAECA) and/or the California Appliance Efficiency Regulations (Title 20) Supply Plenum Flex Duct System, incl. starter collars, y's, etc. AND Cooling AND Coil Indoor Unit Refrigerant Metering New/Replacement Boot Boot Device Air Handler Register Register ≥75% new duct material AND AND AND All heating/cooling Heat Exchanger equipment

Suction Line Condenser Coil Return Liquid Line Compressor Plenum [RETURN DUCTS] Outdoor Unit Figure 3: Entirely New or Complete Replacement Space-Conditioning System: §150.2(b)1C

EnergyCodeAce.com 2016 Title 24, Part 6 - Residential HVAC Alterations Page 2 of 4 Forms: Which & When In addition to a permit, typically HVAC alterations require the following: • CF1R: Certificate of Compliance: Alteration to an HVAC System

– CF1R-ALT-02-E STATE OF CALIFORNIA ALTERATIONS TO SPACE CO CEC-CF1R-ALT-02-E (Revised 03/16) NDITIONING SYSTEMS

CERTIFICATE OF COMPLIANCE CALIFORNIA ENERGY COMMISSION Alterations to Space Conditioning Systems CF1R-ALT-02-E • Completed and signed by the installing contractor Project Name: (Page 1 of 5) Date Prepared: A. General Information CF1R-ALT-02 is appli cable to multiple space conditioning systems contained within a single dwel each dwelling unit. ling unit. When multiple dwelling units must be documented, use one CF1R-ALT-02 document for • Must be registered with a HERS Provider prior to permit 01 Project Name:

03 Project Location: 02 Date Prepared:

05 CA City: 04 Building Type:

07 Zip Code: 06 Dwelling Unit N ame: 08 Dwelling Unit CFA ( 2 application 09 Climate Zone: ft ): Number of 10 Space Conditioning (SC) Systems in this Dwelling Unit: B. Space Co nditioning (SC) System Information 01 02 03 04 05 06 – CF1R-ALT-03-E CFA served Is the SC 07 08 SC System Installing a 09 10 SC System by this SC Iden system a refrigerant tification or Location or Area Installing more System ducted containing Installing Installing Name Served 2 Installing new SC than 40 f (ft ): system? component? eet of entirely new entirely new System components? ducts? duct system? SC system? Alteration Type: • For Climate Zones 1, 3-7, 16

C. Extension of Existing Duct System, Grea ter Than 40 Feet (Section 150.2(b)1D 01 02 iib) • May be filled out by hand, but must be registered with a System

Identification New Duct or Name R-Value

HERS Provider prior to final inspection

– CF1R-ALT-04-E Required Documentation: CF2R-MCH-01-E - Space Conditioning Systems -Duct insulati on requirement for new plenums: R6 (CZ 1-10, 12 & 13) and R-8 (CZ 11 & 14-16) CF2R & CF3R-M CH-20-H – Duct Leakage Test -Leakage rate compliance: ≤ 15%, or ≤ 10% leakage to outside, or Exceptions: seal all accessible leaks • For Climate Zones 2, 8-15 Existing duct systems cons tructed, insulated or sealed with asb estos are exempt from M CH-20 duct leakage testing requirements

Registration Number: Registra CA Building Energy Efficiency S tion Date/Time: • May be filled out by hand, but must be registered with a tandards - 2016 Residential Compliance HERS Provide r: HERS Provider prior to final inspection March 2016 • CF2R-MCH-01*-E: Certificate of Installation for Space Conditioning Systems, Ducts and Fans – Completed and signed by the installing contractor, and made F CALIFORNIA MMISSION STATE O ND FANS CALIFORNIA ENERGY CO SYSTEMS DUCTS A NDITIONING CF2R-MCH-01-E SPACE CO CEC-CF2R-MCH-01-H (Revised 03/16) (Page 1 of 7) CERTIFICATE OF INSTALLATION Permit Number: available for final inspection by building department ems Ducts and Fans nditioning Syst Enforcement Agency: Space Co Zip Code: ame: Project N City:

– Must be registered with a HERS Provider prior to final Dwelling Address: A. General Information 02 Climate Zone

lling Unit Name 01 Dwe Number of Space Conditioning Systems in this 04 Dwelling Unit Total Conditioned Floor Dwelling Unit inspection 03 2) Area (ft C Loads 06 Method Used to Calculate HVA

05 Certifi cate of Compliance Type Load (Btuh) 08 Calculated Dwelling Unit Heating Calculated Dwelling Unit Sensible 07 Cooling Load (Btuh) • CF3R-MCH Forms: Certificate of Verification 09 Dwelling Unit Number of Bedrooms rmance Certificate of Compliance tems Ducts and Fans - For use with Perfo MCH-01a – Space Conditioning Sys

– CF3R-MCH-20*-H: Certificate of erificationV for Duct Leakage mponent Specifications from CF1R tioning (SC) System Co liance document for this project. B. Design Space Condi fied on the registered CF1R-PRF comp 11 12 oning system features that were speci 09 10 This table reports the space conditi 06 07 08 04 05 01 02 03 Cooling Space Low Leakage System Air-Handling Diagnostic Test Conditioning Required Compressor Space Bypass Duct Cooling System Space bution Thermostat Unit (LLAHU) Cooling Conditioning Distri Zoning Type Speed Type Conditioning Heating Type Status Status Zone Identification Fan Type System Type System Type or Name System Type System Type Name

– Completed by the HERS rater and made available for

Notes: final inspection by building department – Must be registered with a HERS Provider prior to

: final inspection March 2016 Registration Da te/Time: HERS Provider Registration Number: esidential Compliance – CF3R-MCH-22*-H: Certificate of erificationV for Fan Efficacy CA Building Energy Efficiency Standards - 2016 R – Completed by the HERS rater and made available for final inspection by building department – Must be registered with a HERS Provider prior to STATE OF CALIFORNIA DUCT LEAKAGE DIAGNOSTIC TEST CEC-CF3R-MCH-20-H (Revised 03/16)

CERTIFICATE OF VERIFICATION final inspection

Duct Leakage Diagnos CALIFORNIA ENERGY CO tic Test MMISSION Project Name: CF3R-MCH-20-H Dwe lling Address: Enforcement Agency:

(Page 1 of 3)

– CF3R-MCH-23*-H: Certificate of erificationV for Airflow Rate City: Permit Number: A. System Info Zip Code rmation : 01 Space Co nditioning System Iden tifica 02 Space Co tion or Name nditioning System Location or Area Served 03 Bu ilding Type from – Completed by the HERS rater and made available for CF1R

04 Ve rified Low Leakage Ducts in Conditioned Space ( 05 Ve rified Low Leakage Air-ha VLLDCS) Credit from CF1R? ndling Unit Credit from CF1R? 06 Duct System Comp final inspection by building department liance Category

MCH -20a - Completely New Duc t System B. Duct Leakage Diagnostic Test – Must be registered with a HERS Provider prior to 01 Co ndenser Nominal C ooling Capacity (ton) 02 Hea ting Capacit y (kBtu/h) 03 Co nditioned Floor Area Served by this HVA

04 Duct Leakage T C System (ft 2) final inspection est Conditi ons 05 Duct Leakage T est Method

06 Leakage Factor

07 Air-Handling Unit Air flow (AHU Airfl 08 Measured AHU Air ow) Determination Method – CF3R-MCH-25*-H: Certificate of erificationV Refrigerant fl ow (cfm) 09 Calculated Target A llowable Duct Leaka ge 10 Actual Duct Leakage Rate from Leakage T Rate (cfm) est Measurement 11 Compliance Statement: (cfm) Charge 12 Notes:

– Completed by the HERS rater and made available for final inspection by building department – Must be registered with a HERS Provider prior to final inspection * Correct version (e.g., “a”, “b”, “c”) varies depending upon the project scope

and approach used to demonstrate compliance Registration Number:

CA Building Energy E Registra fficiency Standards - 2016 Residen tion Date/Time: tial Compliance HERS Provider:

March 2016

EnergyCodeAce.com 2016 Title 24, Part 6 - Residential HVAC Alterations Page 3 of 4 For More Information Primary Sources • Energy Standards Section 110.2 – Mandatory Requirements for Space-Conditioning Equipment energycodeace.com/site/custom/public/reference-ace-2016/index.html#!Documents/ section1102mandatoryrequirementsforspaceconditioningequipment.htm • Energy Standards Section 150.0 – Mandatory Features and Devices energycodeace.com/site/custom/public/reference-ace-2016/index.html#!Documents/ section1500mandatoryfeaturesanddevices.htm • Energy Standards Section 150.1 – Performance and Prescriptive Compliance Approaches for Newly Constructed Residential Buildings energycodeace.com/site/custom/public/reference-ace-2016/index.html#!Documents/ section1501performanceandprescriptivecomplianceapproachesforlowr.htm • Energy Standards Section 150.2 – Energy Efficiency Standards for Additions and Alterations to Existing Low-Rise Residential Buildings energycodeace.com/site/custom/public/reference-ace-2016/index.html#!Documents/ section1502energyefficiencystandardsforadditionsandalterationsto.htm • Residential Compliance Manual, Chapter 4: HVAC Building Requirements energy.ca.gov/2015publications/CEC-400-2015-032/chapters/chapter_4-Building_ HVAC_Requirements.pdf California Energy Commission Information & Services • Energy Standards Hotline: 1-800-772-3300 (Free) or [email protected] • Online Resource Center: energy.ca.gov/title24/orc/ – The Energy Commission’s main web portal for Energy Standards, including information, documents, and historical information Additional Resources • Energy Code Ace: EnergyCodeAce.com – An online “one-stop-shop” providing free resources and training to help appliance and building industry professionals decode and comply with Title 24, Part 6 and Title 20. The site is administered by California’s investor-owned utilities. Of special interest: • 2016 Trigger Sheet on Residential HVAC Alterations: energycodeace.com/content/resources-trigger-sheets/ Please register with the site and select an industry role for your profile in order to receive messages about all our free offerings!

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