2021 Comfortable Home Rebates Technical Standards For Pacific Gas and Electric Territory Version 3.0, March 2021 Table of Contents 1. Introduction .................................................................................................................................... 3 Table 1. Program Measures ......................................................................................................... 3 2. Non‐Incentive Program Requirements ........................................................................................... 8 2.1 Combustion Appliance Safety Testing ........................................................................................ 8 Table 2. Diagnostic and Safety Testing Requirements ..................................................................... 8 2.2 Carbon Monoxide Device ......................................................................................................... 10 2.3 Participant Health & Safety ......................................................................................................... 11 3. Program Incentive Measures ........................................................................................................ 13 3.1 Air Sealing ................................................................................................................................ 13 3.2 Attic Insulation ......................................................................................................................... 15 3.3 Wall Insulation ......................................................................................................................... 21 3.4 Floor Insulation ........................................................................................................................ 24 3.5 Duct Insulation ......................................................................................................................... 25 3.6 Duct Replacement ................................................................................................................... 26 3.7 Duct Sealing ............................................................................................................................. 29 3.8 Deep‐Buried Duct Insulation .................................................................................................... 31 3.9 Right‐Size Return Duct and Filter/Grille ................................................................................... 31 3.10 Heating & Cooling (HVAC) Equipment Replacement ............................................................. 32 3.11 HVAC Maintenance Measures ............................................................................................... 34 3.12 Sensi Predict System .............................................................................................................. 37 3.13 Storage Water Heaters .......................................................................................................... 37 3.14 Variable Speed Pool Pump ..................................................................................................... 38 3.15 Smart Thermostat .................................................................................................................. 39 3.16 LED Recessed Light Fixtures ................................................................................................... 40 3.17 Induction Cooktop or Range .................................................................................................. 40 3.18 ENERGY STAR Electric Clothes Dryer ...................................................................................... 41 3.19 Program Information and Questions ..................................................................................... 41 1. Introduction Comfortable Home Rebates Improvement Pathway offers property owners incentives for participating in installing Program measures that are intended to give them greater comfort, savings on energy costs, and better indoor air quality. This document provides a set of technical standards for energy efficiency measures and/or health and safety tasks that are required for (or eligible for) inclusion in Program pathway projects. The standard for each measure discusses minimum requirements, best practices, and may also include verification protocols for the Technical Review verifier and Field Quality Control (FQC) verifier. The Technical Review verifier will apply the verification protocols to confirm that the minimum requirements were adequately met in ‘Technical Review’ (after an application has been submitted for review for incentive processing). The FQC verifier will apply the verification protocols to confirm that the minimum requirements were adequately met in the field. The quality assurance and quality control processes and the roles of the Technical Review verifier and Field Quality Control (FQC) verifier are discussed in more depth in the Comfortable Home Rebates Improvement Pathway Participant Handbook. 1 The following energy efficiency measures may be selected to create a Program rebate application and project work‐scope: Table 1. Program Measures Measure Name Standard Quantity PG&E Fuel Type Req Core Attic R‐44 or better, installed 100% of accessible Electric Insulation per CEC QII standards. attic area (minimum and/or gas Existing insulation 50% of total attic maximum R19 in CZ 2, 3, area) 5. Existing insulation maximum R30 in CZ 1, 4, 11, 12, 13, 16. Core Wall R value ≥ 13 (2x4 framing) Minimum 50% total Electric Insulation or R value ≥ 19 (2x6 wall area (all walls) and/or Gas framing). Thermal images should be taken and will be requested at FQC. Core Floor R value ≥19, installed to 100% of accessible Electric Insulation full‐joist thickness. floor area (minimum and/or gas 50% of total floor area) 1 Comfortable Home Rebates Improvement Pathway Participant Handbook, www.comfortablehomerebates.com March 2021 Page 3 Core Duct Sealing Seal existing ducts to 10% Up to 2 systems (total) Electric 10% leakage or less. Existing per dwelling unit and/or gas ducts must be 20% leakage or greater at Test‐ In to be eligible for upgrade. Test‐in results will be requested at FQC. Core Duct Sealing Seal existing ducts to 5% Up to 2 systems (total) Electric 5% leakage or less. Existing per dwelling unit and/or gas ducts must be 10% leakage or greater at Test‐ In to be eligible for upgrade. Test‐in results will be requested at FQC. Core Duct Replacement only; R‐8 All 100% of accessible Electric Replacement CZs @ 5% leakage or less. ducts; up to 2 systems and/or gas (total) per dwelling unit Core Right‐Sized Right‐size return duct(s) Up to 2 returns (total) Electric Return and grille/filter housing(s) per dwelling unit and/or gas (length, width and/or depth) upgrade. Return sized per prescriptive table 150.B or C in Title 24 2019. Specify and install low‐static pressure filter(s). Core Heat Pump 9.0 HSPF or better (8.5 or Up to 2 HVAC systems Electric AND Space greater for packaged units (total) per dwelling gas (fuel Conditioning or other unique site unit substitution) conditions, consult your program representative in unique circumstances) Core Cooling Split AC: SEER 16.0 / EER Up to 2 HVAC systems Electric 12.5 or better (total) per dwelling Packaged AC: SEER 15.0 / unit EER 12.0 or better. Must have existing AC Core Heat Pump 3.24 EF / 3.09 UEF or Up to 2 DHWs (total) Electric AND Water better per dwelling unit gas (fuel Heater substitution) March 2021 Page 4 Core Pool Pump CEC Title 20 compliant One pool pump per Electric variable speed pool pump project site replacing existing single or two‐speed pump (primary in‐ground pool system only; no Jacuzzis) Better Measures Better Gas Furnace 95% AFUE or better Up to 2 HVAC systems Gas (total) per dwelling unit Better Smart ENERGY STAR certified Up to 2 (total) per Electric Thermostat Smart Thermostats. Must dwelling unit with and/or gas be Wi‐Fi enabled and corresponding HVAC confirmed via test login. system(s) Better Deep‐Buried Projects that also Up to 2 systems (total) Electric Duct Work replaced or sealed duct per dwelling unit and/or gas system(s) qualify for bonus measure of deep‐ burying ducts in R‐44 or better (blow‐in fiberglass, cellulose, or mineral wools typical, please ensure low VOC products are used). Existing systems must be sealed to 10% duct leakage or less TDL or DLTO <= 25 CFM. All accessible ducts must be deep‐buried (minimum 50% of system). Better Air Sealing 0.35 or better ACHn 800 square foot target, 0.5 ACHn conditioned area (at 8 minimum performance, ft average ceiling achieved in accordance height) minimum with BPI standards and ventilated per ASHRAE 62.2. (installation of balanced Heat Recovery Ventilation recommended) 1) 15% building leakage Electric reduction (pre vs. post) and/or gas 2) 30% building leakage Electric reduction (pre vs. post) and/or gas March 2021 Page 5 Better Gas Storage 0.70 EF / UEF or better Up to 2 DHWs (total) Gas Hot Water per dwelling unit Heater Best Measures Best Sensi Predict Sensi Predict System Up to 2 (total) per Electric dwelling unit with corresponding HVAC system(s) Best ENERGY 3.94 or greater CEF One per dwelling unit Electric AND STAR Electric gas (fuel Clothes substitution) Dryer Best Induction At least 4 burners, must One per dwelling unit Electric AND Range or be installed during gas (fuel Cooktop intervention period. substitution) Best LED Indoor $5 per pin‐base recessed Up to 25 per dwelling Electric Lighting LED Retrofit fixture (Title unit 24