2016 ENERGY CODE Residential Ace Title 24, Part 6 Resources Fact Sheet 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 Duct 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) – Thermostats – 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 ™ Helping you play your cards right 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 refrigerant-containing component, including: • Extension of Existing Ducts >40 ft: The measured – Cooling coil leakage must be ≤ 15% of system air handler air flow. – Condenser coil (There are alternatives to meeting the maximum 15% – Compressor 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 • Heat exchanger 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 fan, but not verified by the HERS Rater. Refrigerant Charge verification the heat exchanger or air handler in the furnace, 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 thermostat. 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: AC System • CF1R: Certificate of Compliance: Alteration to an HV STATE OF CALIFORNIA ALTERATIONS TO SPACE CONDITIONING SYSTEMS CEC-CF1R-ALT-02-E (Revised 03/16) CALIFORNIA ENERGY COMMISSION T-02-E CERTIFICATE OF COMPLIANCE CF1R-ALT-02-E – CF1R-AL Alterations to Space Conditioning Systems (Page 1 of 5) Project Name: Date Prepared: A. General Information • Completed and signed by the installing contractor CF1R-ALT-02 is applicable to multiple space conditioning systems contained within a single dwelling unit. When multiple dwelling units must be documented, use one CF1R-ALT-02 document for each dwelling unit. 01 Project Name: 02 Date Prepared: 03 Project Location: 04 Building Type: 05 CA City: 06 Dwelling Unit Name: • Must be registered with a HERS Provider prior to permit 07 Zip Code: 08 Dwelling Unit CFA (ft2): Number of Space Conditioning (SC) Systems 09 Climate Zone: 10 in this Dwelling Unit: application B. Space Conditioning (SC) System Information 01 02 03 04 05 06 07 08 09 10 CFA served Is the SC Installing a SC System SC System by this SC system a refrigerant Installing more Installing Installing Identification or Location or Area System ducted containing Installing new SC than 40 feet of entirely new entirely new T-03-E Name Served (ft2): system? component? System components? ducts? duct system? SC system? Alteration Type: – CF1R-AL • For Climate Zones 1, 3-7, 16 C. Extension of Existing Duct System, Greater Than 40 Feet (Section 150.2(b)1Diib) 01 02 System Identification New Duct or Name R-Value • May be filled out by hand, but must be registered with a HERS Provider prior to final inspection Required Documentation: CF2R-MCH-01-E - Space Conditioning Systems -Duct insulation requirement for new plenums: R6 (CZ 1-10, 12 & 13) and R-8 (CZ 11 & 14-16) CF2R & CF3R-MCH-20-H – Duct Leakage Test – CF1R-ALT-04-E -Leakage rate compliance: ≤ 15%, or ≤ 10% leakage to outside, or seal all accessible leaks Exceptions: For Climate Zones 2, 8-15 Existing duct systems constructed, insulated or sealed with asbestos are exempt from MCH-20 duct leakage testing requirements • Registration Number: Registration Date/Time: HERS Provider: CA Building Energy Efficiency Standards - 2016 Residential Compliance March 2016 • May be filled out by hand, but must be registered with a HERS Provider prior to final inspection • CF2R-MCH-01*-E: Certificate of Installation for Space Conditioning Systems, Ducts and Fans MMISSION CALIFORNIA ENERGY CO CF2R-MCH-01-E STATE OF CALIFORNIA ND FANS 1 of 7) , and made DUCTS A (Page SYSTEMS G NDITIONIN SPACE CO Permit Number: CEC-CF2R-MCH-01-H (Revised 03/16) Completed and signed by the installing contractor Zip Code: – Enforcement Agency: CERTIFICATE OF INSTALLATION g Systems Ducts and Fans nditionin Space Co City: Project Name: available for final inspection by building department Dwelling Address: on 02 Climate Zone A. General Informati onditioning Systems in this Number of Space C 01 Dwe lling Unit Name 04 Dwelling Unit nditioned Floor C Loads – Must be registered with a HERS Provider prior to final Dwelling Unit Total Co 2 06 Method Used to Calculate HVA 03 Area (ft ) ting Load (Btuh) Compliance Type lling Unit Hea 05 Certifi cate of 08 Calculated Dwe inspection Calculated Dwelling Unit Sensible 07