ANSI/RESNET/ICC 301-2019 Standard for the Calculation and Labeling of the Energy Performance of Dwelling and Sleeping Units PDF
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Residential Energy Services Network, Inc.
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ANSI/RESNET/ICC 301-2019 is a standard for the calculation and labeling of the energy performance of dwelling and sleeping units using an energy rating index. This document, approved December 18, 2018, has been produced by the Residential Energy Services Network, Inc.
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100770511 100770511 ANSI/RESNET/ ICC 301-2019 Standard for the Calculation and Labeling of the Energy Performance of Dwelling and Sleeping Units using an Energy Rating Index American National Standard Residential Energy Services Network, Inc. P.O. Box 4561 Oceanside, CA 92052-4561 International...
100770511 100770511 ANSI/RESNET/ ICC 301-2019 Standard for the Calculation and Labeling of the Energy Performance of Dwelling and Sleeping Units using an Energy Rating Index American National Standard Residential Energy Services Network, Inc. P.O. Box 4561 Oceanside, CA 92052-4561 International Code Council 500 New Jersey Avenue, NW, 6th Floor Washington, D.C. 20001 Approved December 18, 2018 American National Standards Institute 1899 L Street, NW, 11th Floor Washington, D.C. 20036 ©Residential Energy Services Network, 2019. All rights reserved. Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 ANSI/RESNET/ICC 301-2019 Standard for the Calculation and Labeling of the Energy Performance of Dwelling and Sleeping Units using an Energy Rating Index First Printing: July 2019 ISBN: 978-1-60983-880-5 COPYRIGHT 2019 by Residential Energy Service Network, Inc. ALL RIGHTS RESERVED. This ANSI/RESNET/ICC 301-2019 Standard for the Calculation and Labeling of the Energy Performance of Dwelling and Sleeping Units using an Energy Rating Index is a copyrighted work owned by the Residential Energy Service Network. Without advance written permission from the Residential Energy Service Network, no part of this book may be reproduced, distributed or transmitted in any form or by any means, including, without limitation, electronic, optical or mechanical means (by way of example, and not limitation, photocopying, or recording by or in an information storage retrieval system). For information on use rights and permissions, please contact: Residential Energy Service Network, Inc., P.O. Box 4561, Oceanside, CA 92052-4561; http://resnet.us/ ©Residential Energy Service Network, 2019. All rights reserved. T024057R PRINTED IN THE USA Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 RESNET Standards Development Committee 300 Kelly Parker* Jerry Phelan* Dave Roberts* Amy Schmidt* Brian Shanks* Iain Walker* Dan Wildenhaus* Gayathri Vijayakumar, Chair* Thiel Butner* Terry Clausing* Charles Cottrell* Philip Fairey* Dean Gamble* C.R. Herro* * Denotes members of voting status when the document was approved for publication RESNET Standards Management Board Philip Fairey, Chair Wes Davis David B. Goldstein CR Herro David E. Walls Richard W. Dixon, Manager of Standards The 2019 edition of this Standard was first approved for publication on December 11, 2018, by the RESNET Standards Management Board. SPECIAL NOTE This ANSI/RESNET/ICC Standard is a voluntary consensus standard developed under the auspices of the Residential Energy Services Network (RESNET) in accordance with RESNET’s Standards Development Policy and Procedures Manual, Version 2.1, August 25, 2017. RESNET is an American National Standards Institute (ANSI) Accredited Standards Developer. Consensus is defined by ANSI as “substantial agreement reached by directly and materially affected interest categories.” This signifies the concurrence of more than a simple majority but not necessarily unanimity. Consensus requires that all views and objections be considered and that an effort be made toward their resolution. Compliance with this standard is voluntary until, and unless, a legal jurisdiction makes compliance mandatory. RESNET obtains consensus through participation of its national members, associated societies, and public review. The initial publication of the first edition of this Standard was designated and titled ANSI/RESNET 301-2014 Standard for the Calculation and Labeling of the Energy Performance of Low-Rise Residential Buildings using the HERS Index. The designation and title were changed to ANSI/RESNET/ICC 301-2014 Standard for the Calculation and Labeling of the Energy Performance of Low-Rise Residential Buildings using an Energy Rating Index as noted in the amendment proceeding for ANSI/RESNET/ICC 301-2014 Addendum B-2015. The second publication of the Standard’s first edition incorporated the designation and title changes and other nonsubstantive editorial changes to the first publication. This second edition of the Standard, ANSI/RESNET/ICC 301-2019 Standard for the Calculation and Labeling of the ANSI/RESNET/ICC 301-2019 iii Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 Energy Performance of Low-Rise Residential Buildings using an Energy Rating Index, incorporates a number of substantive changes, the more significant of which are all addenda to the first edition and criteria specific to Attached Dwelling and attached Sleeping Units in buildings of all heights. This Standard is under continuous maintenance in accordance with Section 10.9 of the RESNET Standard Development Policy and Procedures Manual. Continuous maintenance proposals should be submitted to the Manager of Standards via the online form on the RESNET website. The Manual and online form can be accessed from the website at www.resnet.us/blog/resnetconsensus-standards/ under the heading “Standards Development.” The Manager of Standards should be contacted for: a. Interpretation of the contents of this Standard b. Participation in the next review of the Standard c. Offering constructive criticism for improving the Standard d. Permission to reprint portions of the Standard iv ANSI/RESNET/ICC 301-2019 Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 Table of Contents Foreword (Informative) ............................................................................................................ 1 1. Purpose ................................................................................................................................ 2 2. Scope ................................................................................................................................... 2 3. Definitions........................................................................................................................... 2 3.1. General ........................................................................................................................2 3.2. Definitions...................................................................................................................2 3.3. Acronyms ..................................................................................................................15 4. Energy Rating Calculation Procedures. ............................................................................ 18 4.1. Determining the Energy Rating Index ......................................................................18 4.1.1. Calculating End Use Loads. ..........................................................................18 4.1.2. Calculating the Energy Rating Index. ...........................................................19 4.2. Energy Rating Reference Home and Rated Home Configuration ............................20 4.2.1. General Requirements. ..................................................................................20 4.2.2. Residence Specifications. .............................................................................20 4.3. Index Adjustment Factor (IAF) ................................................................................57 4.3.1. Index Adjustment Design (IAD) ...................................................................57 4.4. Operating Condition Assumptions............................................................................60 4.4.1. Programmable Thermostats. .........................................................................60 4.4.2. Local Climate ................................................................................................60 4.4.3. HVAC Sizing. ...............................................................................................60 4.4.4. Air Source Heat Pumps and Air Conditioners ..............................................63 4.4.5. Ground Source Heat Pumps ..........................................................................64 4.4.6. Fossil Fuel Fired Furnaces and Boilers Serving One Unit ...........................65 4.4.7. Fossil Fuel Fired Boilers Serving more than One Unit.................................66 4.4.8. Natural Ventilation........................................................................................66 4.4.9. Whole-House Fans ........................................................................................67 4.5. Minimum Rated Features ..........................................................................................67 4.5.1. Data Sources .................................................................................................67 4.5.2. Standard Features ..........................................................................................67 4.6. Existing Home Retrofit Savings ...............................................................................74 4.6.1. Baseline Existing Home ................................................................................75 4.6.2. Improved Home ............................................................................................75 4.6.3. Standard Operating Conditions .....................................................................75 4.6.4. Energy Savings Calculation ..........................................................................77 4.7. Economic Cost Effectiveness ...................................................................................78 4.7.1. Calculation of Ratio Parameters ...................................................................78 4.7.2. Standard Economic Inputs. ...........................................................................80 5. Certification and Labeling ................................................................................................ 82 5.1. Rating Requirements .................................................................................................82 5.1.1. General ..........................................................................................................82 5.1.2. Savings Estimates .........................................................................................83 5.1.3. Reports ..........................................................................................................85 ANSI/RESNET/ICC 301-2019 v Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 5.1.4. Rating Types .................................................................................................86 5.1.5. Average Dwelling Unit Energy Rating Index ...............................................90 5.2. Innovative Design Requests......................................................................................91 5.2.1. Petition ..........................................................................................................91 5.2.2. Approval .......................................................................................................91 5.3. Labeling. ...................................................................................................................91 6. Normative References ....................................................................................................... 93 7. Informative References ..................................................................................................... 95 Normative Appendix A ......................................................................................................... A-1 Normative Appendix B ......................................................................................................... B-1 Annex X – ECM Guidelines (Informative) .......................................................................... X-1 vi ANSI/RESNET/ICC 301-2019 Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 ANSI/RESNET/ICC 301-2019 Standard for the Calculation and Labeling of the Energy Performance of Dwelling and Sleeping Units using an Energy Rating Index Foreword (Informative) This Standard provides a consistent, uniform methodology for evaluating and labeling the energy performance of Dwelling Units and Sleeping Units, including all detached and attached housing types. The terms Dwelling Unit and Sleeping Unit are interchangeable with the term home, except where specifically noted. The methodology compares the energy performance of an actual home with the energy performance of a reference home of the same geometry, resulting in a relative Energy Rating called the Energy Rating Index (ERI). Where the energy performance of the actual home and the reference home are equal, the Energy Rating Index is 100 and where the actual home requires no net Purchased Energy annually, the Energy Rating Index is 0 (zero). The Energy Rating Reference Home used for this comparative analysis has the energy attributes of the 2006 International Energy Conservation Code (IECC) Standard Reference Design. Thus, the Energy Rating Index is relative to the minimum building energy efficiency requirements of the 2006 IECC. As a result, the Energy Rating Reference Home performance will not comport with state or local building codes that differ in stringency from the 2006 IECC. Where local building energy codes are less stringent than the 2006 IECC, the Energy Rating Index for the local standard will be greater than 100 and where local building energy codes are more stringent than the 2006 IECC, the Energy Rating Index for the local standard will be less than 100. Because the Energy Rating Index accounts for all lighting, appliances and Miscellaneous Energy Loads, there is never a 1-to-1 correspondence between code compliance (even under the 2006 IECC) and an Energy Rating Index of 100. This standard does not provide a methodology for the calculation of an ‘Energy Rating Index’ for a whole building that contains more than one Dwelling Unit or Sleeping Unit. Section 5.1.4.5 provides a method to calculate a ‘composite Energy Rating Index’ substitute that is allowed to represent the residential portions of a single building that contains more than one Dwelling or Sleeping Unit or a group of multiple Detached Dwelling Units. This Standard contains both normative and informative material. The body of the Standard is normative and must be complied with to conform to the Standard. Informative materials are not mandatory and are limited to this forward, footnotes, references and annexes, all of which are clearly marked as informative. The designation and title of the first edition of this Standard were revised effective November 17, 2015. The original designation, “ANSI/RESNET 301-2014,” was revised to “ANSI/RESNET/ICC 301-2014.” The title, “Standard for the Calculation and Labeling of LowRise Residential Buildings using the HERS Index,” was revised to “Standard for the Calculation ANSI/RESNET/ICC 301-2019 1 Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 and Labeling of Low-Rise Residential Buildings using the Energy Rating Index.” All references to “HERS” within the Standard were revised to “Energy Rating.” The change in designation adds recognition of the International Code Council (ICC) as a sponsor of the Standard. Nonsubstantive editorial changes to ANSI/RESNET 301-2014 noted in the amendment proceeding for ANSI/RESNET/ICC 301-2014 Addendum B-2015 and in the “Special Note” above were published in that edition. This is the second edition of the Standard and is the first update in its five-year revision cycle. The designation is updated to indicate year 2019 and the title and scope are modified to reflect its expansion to cover Dwelling and Sleeping Units in buildings of any height. The terminology of the title and scope have been revised for consistency with the International Code Council model building codes. 1. Purpose. The provisions of this document establish Energy Rating and labeling Standards, consistent with the provisions of the Energy Policy Act of 1992, which provides for uniformity and consistency in the Rating and labeling of Dwelling Units and Sleeping Units in detached and attached housing types. 2. Scope. This standard is applicable to Dwelling Units and Sleeping Units in Residential or Commercial Buildings, except hotels and motels.1 Energy Ratings determined in accordance with this Standard are for individual Dwelling Units or Sleeping Units only. This Standard does not provide procedures for determining Energy Ratings for whole buildings containing more than one unit. 3. Definitions. The following terms and acronyms have specific meanings as used in this Standard.2 In the event that definitions given here differ from definitions given elsewhere, the definitions given here shall govern. 3.1. General. Unless stated otherwise, the terms and words in Section 3.2 shall have the meanings indicated therein. Words used in the present tense include the future. Words in the masculine gender include the feminine and neuter, and singular and plural are interchangeable. Terms not defined in Section 3.2 shall have ordinary accepted meanings that the context implies. 3.2. Definitions. Air Source Heat Pump (ASHP) – Vapor-compression heating and cooling equipment that uses the outdoor air as the heat source or sink for heat (see also Heat Pump). Annual Fuel Utilization Efficiency (AFUE) – A measure of the efficiency of gas or oil fired furnaces and boilers calculated as the furnace heating energy output divided by fuel energy input. AFUE does not include electrical energy for fans, or electronic ignition systems (see also Electric Auxiliary Energy). 1 (Normative Note) The terms “Dwelling Unit” and “Sleeping Unit” are interchangeable with the term “home” throughout this Standard, except where specifically noted. 2 (Informative Note) When used in this Standard, the first letter of each word is capitalized to indicate that the term is defined in Section 3.2. 2 ANSI/RESNET/ICC 301-2019 Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 Approved – Shall mean approved by an entity adopting and requiring the use of this Standard as a result of investigation and tests conducted by the entity or by reason of accepted principles or tests by nationally recognized organizations. Approved Hot Water Operational Control Device – A means of controlling the waste hot water in residences that is Approved for use based on empirical test data and where the control effectiveness of the device is clearly labeled in terms of its overall reduction of operational waste hot water. Approved Inspector – An individual who, by virtue of training and examination, has demonstrated competence in the performance of on-site inspections in accordance with requirements of Appendix A and Appendix B and who has been Approved by an Approved Rating Provider to conduct such tests. Approved Rating Provider – An Approved entity responsible for the approval of Approved Testers and Approved Inspectors and the certification of raters working under its auspices and who is responsible for the Quality Assurance of such Certified Raters and for the Quality Assurance of Energy Ratings produced by such Certified Raters. Approved Software Rating Tool 3 – A computerized procedure that is Approved for the purpose of conducting Energy Ratings and calculating the annual energy consumption, annual energy costs and an Energy Rating Index for a home. Approved Tester – An individual who, by virtue of training and examination, has demonstrated competence in the performance of on-site testing in accordance with requirements of Standard ANSI/RESNET/ICC 380 and who has been Approved by an Approved Rating Provider to conduct such tests. Attached Dwelling Unit – A Dwelling Unit sharing demising walls, floors, ceilings or common corridors with another Dwelling Unit or Occupiable Space. Average Dwelling Unit Energy Rating Index – A single, composite Energy Rating Index substitute that can be used to represent the residential portions of a single building. This substitute is established by averaging the Energy Rating Index of each Dwelling Unit in the building and is calculated in accordance with Section 5.1.4.5. Auxiliary Electric Consumption – The annual auxiliary electrical energy consumption for a fossil fuel fired furnace, boiler or Ground Source Heat Pump in Kilowatt-Hours per year. Balanced Ventilation System (Balanced System) – A Ventilation system where the total supply airflow and total exhaust airflow are simultaneously within 10 percent of their average. Baseline Existing Home Model – The original energy features and standard operating conditions of an existing home that is, or will be, subjected to improvements through a home energy efficiency retrofit. 3 (Informative Note) A list of software rating tools meeting the requirements of RESNET Publication No. 002-2017 and Approved by RESNET is online at http://www.resnet.us/professional/programs/energy_rating_software. ANSI/RESNET/ICC 301-2019 3 Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 Bedroom – For one- and two-family Dwellings and Townhouses, a room or space 70 square feet of floor area or greater, with egress window or skylight, and doorway to the main body of the Dwelling Unit, that can be used for sleeping.4 For all other Dwelling Units, a room or space that can be used for sleeping. For all Dwelling or Sleeping Units, the number of Bedrooms shall not be less than one. Biomass Fuel – Plant or animal waste materials that have been processed to be capable of providing useful heat through combustion. British Thermal Unit (Btu) – An energy unit equal to the amount of heat needed to raise one pound of water one degree Fahrenheit at a constant pressure of one atmosphere; equal to approximately 1055 joules. Certified Rater – An individual who has become qualified to conduct Energy Ratings through certification by an Approved Rating Provider. Chiller – Vapor-compression cooling equipment that uses the outdoor air or water circulated through a Cooling Tower as a heat sink for cooling. Coefficient of Performance (COP) – The ratio of the rate of heat delivered to the rate of energy input, in consistent units, for a complete Heat Pump system under designated operating conditions. Commercial Building – All buildings that are not included in the definition of Residential Buildings. Compartmentalization Boundary – The surface area that bounds the Infiltration Volume of the Dwelling Unit. Conditioned Floor Area (CFA)5 – The floor area of the Conditioned Space Volume within a building or Dwelling Unit, not including the floor area of attics, crawlspaces, and basements below air sealed and insulated floors. The following specific spaces are addressed to ensure consistent application of this definition: The floor area of a wall assembly that is adjacent to Conditioned Space Volume shall be included. The floor area of a basement shall be included if the party conducting the evaluation has either: Obtained an ACCA Manual J, S, and either B or D report and verified that both the heating and cooling equipment and distribution system are designed to offset the entire design load of the volume; or Verified through visual inspection that both the heating and cooling equipment and distribution system serve the volume and in the judgment of the party 4 (Informative Note) A “den,” “library,” “home office,” or other similar rooms with a closet, egress window and doorway to the main body of the Dwelling Unit as well as 70 square feet of floor area or greater are considered a Bedroom. However, living rooms, foyers and other rooms not intended for sleeping are not. The number of rooms identified as Bedrooms is used to determine the number of occupants. 5 (Informative Note) Informative Annex A of Standard ANSI/RESNET/ICC 380 contains a table that summarizes parts of a Dwelling Unit that are included in Conditioned Floor Area. 4 ANSI/RESNET/ICC 301-2019 Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 conducting evaluations, are capable of maintaining the heating and cooling temperatures specified by the Thermostat section in Table 4.2.2(1). The floor area of a garage shall be excluded even when it is conditioned. The floor area of a thermally isolated sunroom shall be excluded. The floor area of an attic shall be excluded even when it is Conditioned Space Volume. The floor area of a crawlspace shall be excluded even when it is Conditioned Space Volume. Conditioned Space Volume6 – The volume within a Dwelling Unit serviced by a space heating or cooling system designed to maintain space conditions at 78°F for cooling and 68°F for heating. The following specific spaces are addressed to ensure consistent application of this definition: If the volume both above and below a floor assembly meets this definition and is part of the Rated Dwelling Unit, then the volume of the floor assembly shall also be included. Otherwise, the volume of the floor assembly shall be excluded. Exception: The wall height shall extend from the finished floor to the bottom side of the floor decking above the Rated Dwelling Unit for non-top floor level Dwelling Units and to the exterior enclosure air barrier for top floor level Dwelling Units. If the volume of at least one of the spaces horizontally adjacent to a wall assembly meets this definition, and that volume is part of the Rated Dwelling Unit, then the volume of the wall assembly shall also be included. Otherwise, the volume of the wall assembly shall be excluded. Exception: If the volume of one of the spaces horizontally adjacent to a wall assembly is a Dwelling Unit other than the Rated Dwelling Unit, then the volume of that wall assembly shall be evenly divided between both adjacent Dwelling Units. The volume of an attic that is not both air sealed and insulated at the roof deck shall be excluded. The volume of a vented crawlspace shall be excluded. The volume of a garage shall be excluded, even when it is conditioned. The volume of a thermally isolated sunroom shall be excluded. The volume of an attic that is both air sealed and insulated at the roof deck, the volume of an unvented crawlspace, and the volume of a basement shall only be included if the volume is contiguous with the Rated Dwelling Unit and the party conducting evaluations has either: Obtained an ACCA Manual J, S, and either B or D report and verified that both the heating and cooling equipment and distribution system are designed to offset the entire design load of the volume; or Verified through visual inspection that both the heating and cooling equipment and distribution system serve the volume and, in the judgment of the party 6 (Informative Note) Informative Annex A of Standard ANSI/RESNET/ICC 380 contains a table that summarizes parts of a Dwelling Unit that are included in Conditioned Space Volume. ANSI/RESNET/ICC 301-2019 5 Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 conducting evaluations, are capable of maintaining the heating and cooling temperatures specified by the Thermostat section in Table 4.2.2(1). The volume of a mechanical closet, regardless of access location, that is contiguous with the Rated Dwelling Unit shall be included if: It is serviced by a space heating or cooling system designed to maintain space conditions at 78°F for cooling and 68°F for heating; It only includes equipment serving the Rated Dwelling Unit; and The mechanical room is not intentionally air sealed from the Rated Dwelling Unit. Confirmed Rating – A Rating accomplished using data gathered from verification of all rated features of the home in accordance with this Standard. Cooling Tower – A heat rejection device that rejects heat to the atmosphere. Design Approval Primary Inspection Agency (DAPIA) – A third-party agency designated by the U.S. Department of Housing and Urban Development (HUD) to be responsible for evaluating manufactured home designs submitted to it by the manufacturer and for assuring that they conform to the HUD standards for manufactured homes. Detached Dwelling Unit – A Dwelling Unit that does not meet the definition of Attached Dwelling Unit. Distribution System Efficiency (DSE)7 – A system efficiency factor that adjusts for the energy losses associated with the delivery of energy from the equipment to the source of the load.8 Drain Water Heat Recovery (DWHR) Unit – A heat exchanger unit that uses outgoing warm drain water to pre-heat incoming cold freshwater and is rated for efficiency and pressure loss according to CSA B55.1 and complies with CSA B55.2. Dwelling – Any building that contains one or two Dwelling Units used, intended, or designed to be built, used, rented, leased, let or hired out to be occupied, or that are occupied for living purposes. Dwelling Unit – A single unit providing complete independent living facilities for one or more persons, including permanent provisions for living, sleeping, eating, cooking, and sanitation. Dwelling Unit Mechanical Ventilation System – A Ventilation system consisting of powered Ventilation equipment such as motor-driven fans and blowers and related mechanical components such as ducts, inlets, dampers, filters and associated control devices that provides Dwelling Unit Ventilation at a known or measured airflow rate. 7 (Informative Note) DSE is not included in manufacturer’s equipment performance ratings for heating and cooling equipment. 8 (Informative Note) Such as energy losses associated with heat transfer across duct or piping walls and air leakage to or from forced air distribution systems. 6 ANSI/RESNET/ICC 301-2019 Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 Electric Auxiliary Energy (Eae) – The average annual Auxiliary Electric Consumption for a gas furnace or boiler in Kilowatt-Hours per year as published in the AHRI Consumer’s Directory of Certified Efficiency Ratings. Emittance – A measure of the ability of a surface to emit radiation, expressed as the ratio of the energy radiated within a specific spectral band by a surface to that radiated within that same specific spectral band by a blackbody at the same temperature. Energy Efficiency Ratio (EER) – The ratio of net equipment cooling capacity in Btu/h to total rate of electric input in Watts under designated operating conditions. Energy Factor (EF) – A standardized measure of energy efficiency as determined under Department of Energy Regulations, 10 CFR 430. Energy Policy Act of 1992 (EPAct 92) – An act of the U.S. Congress, passed in 1992, which required the development by the U.S. Department of Energy (DOE) of voluntary guidelines for home energy rating systems. Energy Rating – An unbiased indication of a Dwelling Unit’s relative energy performance based on consistent inspection procedures, operating assumptions, climate data and calculation methods in accordance with this Standard. Energy Rating Disclosure – A set of assertions attested to by the Certified Rater listing all potential financial interests of the Certified Rater with respect to the property being Rated. Where any potential financial interest in the results of the Rating exists on the part of the Certified Rater, it must be disclosed and attested to in writing by the Certified Rater. Energy Rating Index (ERI) – A numerical integer value that represents the relative energy use of a Rated Home as compared with the energy use of the Energy Rating Reference Home and where an Index value of 100 represents the energy use of the Energy Rating Reference Home and an Index value of 0 (zero) represents a home that uses zero net Purchased Energy annually. Energy Rating Reference Home – A hypothetical home configured in accordance with the specifications set forth in Section 4.2 of this Standard as the basis of comparison for the purpose of calculating the relative energy efficiency and Energy Rating Index of a Rated Home. Energy Rating System – The procedures, rules and guidelines by which Energy Ratings are conducted by an Approved Rating Provider as specified in these Standards. ENERGY STAR – A joint program of the U.S. Environmental Protection Agency (EPA) and the U.S. Department of Energy (DOE) that encourages energy use reduction by providing ENERGY STAR labels to products and homes meeting the improved energy efficiency requirements of the program. Exhaust Ventilation System (Exhaust System) – One or more fans that remove air from the Dwelling Unit, causing outdoor air to enter by Ventilation inlets or normal leakage paths through the Dwelling Unit envelope. ANSI/RESNET/ICC 301-2019 7 Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 Existing Home Retrofit – The set of energy efficiency improvements made to an existing home to improve its energy performance. Failure – When one or more of the Threshold Specifications are not met during inspections or testing. Fenestration – A glazed opening and its associated sash and framing that is installed into a building. Framing Fraction (FF) – The fractional area of walls, ceilings, floors, roofs and other enclosure elements comprising the structural framing elements with respect to the total Gross Area of the component. Glazing – Sunlight-transmitting Fenestration, including the area of sash, curbing or other framing elements that enclose Conditioned Space Volume. For doors where the sunlighttransmitting opening is less than 50 percent of the door area, the Glazing area of the sunlight transmitting opening area shall be used. For all other doors, the Glazing area is the rough frame opening area for the door including the door and the frame. Gross Area – The area of a building enclosure component that includes the areas of the Fenestration areas that are not normally included in the net area of the enclosure component. Normally, the simple area calculated as the overall length times the overall width of the enclosure component.9 Ground Source Heat Pump (GSHP) – Vapor-compression heating and cooling equipment that uses the ground (or ground water) as the heat source or sink for heat (see also Heat Pump). Heat Pump – A vapor-compression refrigeration device that includes a reversing valve and optimized heat exchangers so that the direction of heat flow is reversed in order to transfer heat from one location to another using the physical properties of an evaporating and condensing fluid known as a refrigerant.10 Heating Seasonal Performance Factor (HSPF) – A standardized measure of Heat Pump efficiency, based on the total heating output of a Heat Pump in Btu and divided by the total electric energy input in watt-hours and under test conditions specified by the Air Conditioning and Refrigeration Institute Standard 210/240. Improved Home Model – The energy features and standard operating conditions of a home after an Existing Home Retrofit has been accomplished to improve the energy performance of the home. Index Adjustment Design (IAD) – A home design comprising two stories and three Bedrooms with Conditioned Floor Area of 2,400 square feet used to determine the percentage improvement over the Energy Rating Reference Home for the purposes of determining the Index Adjustment Factor that is applied to the Rated Home. 9 (Informative Note) Example: a wall (Informative Note) Most commonly, Heat Pumps draw heat from the air or from the ground moving the heat from a low temperature heat source to a higher temperature heat sink. 10 8 ANSI/RESNET/ICC 301-2019 Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 Index Adjustment Factor (IAF) – A value calculated using the percentage improvement of the Index Adjustment Design to determine the impact of home size, number of Bedrooms and number of stories on the Energy Rating Index of the Rated Home. Infiltration – The exchange of outdoor and indoor air through small cracks and penetrations in home enclosures driven by pressure differences between the indoor and outdoor environment. Infiltration Volume11 – The sum of the Conditioned Space Volume and additional adjacent volumes in the Dwelling Unit that meet the following criteria: • Crawlspaces and floor assemblies above crawlspaces when the access doors or hatches between the crawlspace and Conditioned Space Volume are open during the enclosure airtightness test; • Attics when the access doors or access hatches between the attic and Conditioned Space Volume are open during the enclosure airtightness test; and • Basements and floor assemblies above basements where the doors between the basement and Conditioned Space Volume are open during the enclosure airtightness test. In-Plant Inspection Agency (IPIA) – A third-party agency designated by the U.S. Department of Housing and Urban Development (HUD) to ensure the construction quality of manufactured housing. Insulated Sheathing – An insulating board with a core material having a minimum R-Value of R-2. Internal Gains – The heat gains within a home attributable to lights, people, hot water tanks, equipment, appliances, and Miscellaneous Energy Loads internal to the Conditioned Space Volume. International Energy Conservation Code (IECC) – The model building energy efficiency code as promulgated by the International Code Council. kBtu – One thousand British Thermal Units (Btu). Kilowatt-Hour (kWh) – One thousand Watt-Hours (see also Watt-Hour); approximately equal to 3412 Btu. Latent Energy – Energy associated with the amount of moisture vapor in the air. The term refers to moisture vapor that is added to an indoor space by Internal Gains, a humidifier or by outdoor air introduced to the indoor space or to moisture vapor that is removed from an indoor space by air conditioning, Ventilation or dehumidification (see also Sensible Energy). Manual J – The procedures published by the Air Conditioning Contractors of America (ACCA) used to estimate the heating and air conditioning loads of homes. MBtu – One million British Thermal Units (Btu). 11 (Informative Note) Informative Annex A of Standard ANSI/RESNET/ICC 380 contains a table that summarizes parts of a Dwelling Unit that are included in Infiltration Volume. ANSI/RESNET/ICC 301-2019 9 Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 Minimum Rated Features – The characteristics of the building elements which are the basis for the calculation of end use loads and energy consumption for the purpose of an Energy Rating, and which are evaluated by Certified Raters or Approved Inspectors in accordance with the on-site inspection procedures described in Appendix B in order to collect the data necessary to create an Energy Rating using an Approved Software Rating Tool. Miscellaneous Energy Loads (MELs) – Energy uses that are not attributable to space heating, space cooling, hot water heating or well-defined energy uses of specific appliances that have a large saturation in homes. Multifamily Buffer Boundary – An unconditioned building space located directly adjacent to the Compartmentalization Boundary of the Dwelling Unit.12 National Appliance Energy Conservation Act (NAECA) – Legislation by the United States Congress that regulates energy consumption of specific household appliances in the United States, first passed as the Energy policy and Conservation Act in 1975 (Public Law 94-163) and amended in 1987 and 1988 (Public Laws 100-12 and 100-357), 1992 (Public Law 102486) and 2005 (Public Law 109-58) and 2007 (Public Law 110-140). Natural Ventilation – The purposeful introduction of outdoor air into the home through open skylights, windows and doors with the specific purpose of improving indoor comfort without the use of HVAC equipment. Non-Freezing Space – For modeling purposes, the temperature of this space shall float with outside temperature but shall be no lower than 40°F. Applicable only in buildings containing multiple Dwelling Units. Occupiable Space – A room or enclosed space designed for human occupancy in which individuals congregate for amusement, educational or similar purposes or in which occupants are engaged at labor, and which is equipped with means of egress and light and Ventilation facilities meeting the requirements of this standard. On-Site Power Production (OPP) – Electric power produced on the site of a Rated Home. OPP shall be the net electrical power production such that it equals the gross electrical power production minus any purchased fossil fuel energy used to produce the on-site power, converted to equivalent electric energy use at a 40-percent conversion efficiency in accordance with Equation 4.1-3 of this Standard. Pascal (Pa) – The metric unit of pressure equaling 1 Newton per square meter. Performance Threshold – The specific pass/fail criterion for the inspection or testing of each Minimum Rated Feature, which is based on a predetermined prescriptive or worst-case specification. Projected Rating – A Rating13 accomplished using Minimum Rated Feature data derived from plans and specifications. 12 (Informative Note) Such as stairwells, elevator shafts, and refuse closets. (Informative Note) Projected Ratings are commonly generated prior to the construction of a new building or prior to the implementation of energy-efficiency improvements to an existing building. 13 10 ANSI/RESNET/ICC 301-2019 Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 Purchased Energy – The portion of the total energy requirement of a home purchased from a utility or other energy supplier. Quality Assurance – The systematic processes intended to ensure reliable compliance with applicable standards. Qualifying Light Fixture Locations – For the purposes of Rating, those light fixtures located within the contiguous area that is for the sole use of the Rated Home occupants, limited to kitchens, dining rooms, living rooms, family rooms/dens, bathrooms, hallways, stairways, entrances, Bedrooms, garage,14 utility rooms,15 home offices, and all outdoor fixtures mounted on the exterior of the Rated Home or on a pole. This excludes plug-in lamps, closets,16 unconditioned basements, lighting for common spaces, parking lot lighting, and landscape lighting. Qualifying Tier I Light Fixture – A light fixture located in a Qualifying Light Fixture Location that contains fluorescent lamps. Qualifying Tier II Light Fixture – A light fixture located in a Qualifying Light Fixture Location that contains LED lamps, an integrated LED fixture, an outdoor light fixture that is controlled by a photocell or an indoor fixture controlled by a motion sensor. Rated Home – The specific real property that is evaluated using the Energy Rating procedures specified by this Standard. Rating – See Energy Rating. Reference Home – See Energy Rating Reference Home. Renewable Energy System – Means of producing thermal energy or producing electric power that rely on naturally occurring, on-site resources that are not depleted as a result of their use. Renewable Energy Systems shall include, but are not limited to, solar energy systems, wind energy systems and biomass energy systems. Residential Building – Includes detached one-family Dwellings and two-family Dwellings and multiple single-family Dwellings (Townhouses) and Group R-2, R-3 and R-4 buildings three stories or less in height above grade plane.17 Residual Miscellaneous Energy Loads (Residual MELs) – The miscellaneous energy uses within a Rated Home that are included in the energy use but are not explicitly accounted for as distinct end uses by the Minimum Rated Features of the home. 14 (Normative Note) Garages shall include an attached garage or carport if the space is not shared with other Dwelling Units. 15 (Normative Note) Utility rooms shall include rooms used for laundry and rooms used as workshops. 16 (Normative Note) Closets shall include pantries, linen closets, clothes closets, closets with mechanical equipment, and storage closets inside or outside of the Dwelling Unit. 17 (Normative Note) The definition of Residential Building corresponds to the IECC definition of Residential Building. The Occupancy Groups R-2, R-3 and R-4 are as established by the International Building Code. ANSI/RESNET/ICC 301-2019 11 Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 Revenue-Based Price – The electric, natural gas or other fuel rate that is calculated as the total units sold divided by the total revenues received. R-Value – The inverse of the time rate of heat flow through a body from one of its bounding surfaces to the other surface for a unit temperature difference between the two surfaces, under steady state conditions, per unit area (hr∙ft2∙oF/Btu). Sampled Feature – A building element, component, or group thereof that is evaluated for compliance with Threshold Specifications by using Sampling. Sampled Project – A building with multiple units or a group of buildings with multiple units to which Sampling is applied. Sampled Rating – A Rating type that encompasses a set of Dwelling Units and is accomplished using data gathered from verification of fewer than 100 percent of the instances of each minimum rated feature within that set in accordance with this Standard. Sampling – A process whereby fewer than 100 percent of the Dwelling Units are inspected, tested, or modeled to demonstrate compliance with a set of Threshold Specifications. Seasonal Energy Efficiency Ratio (SEER) – A standardized measure of air conditioner efficiency based on the total cooling output of an air conditioner in Btu/h, divided by the total electric energy input, in Watt-hours, under test conditions specified by the Air Conditioning and Refrigeration Institute Standard 210/240. Sensible Energy – Energy associated with the amount of heat contained in the air, as contrasted with Latent Energy, which is energy associated with the amount of moisture vapor contained in the air.18 Shall – As used in this Standard, the word “shall” means that the action specified is mandatory and must be accomplished by the responsible party. Sleeping Unit – A room or space in which people sleep, which can also include permanent provisions for living, eating, and either sanitation or kitchen facilities but not both. Such rooms and spaces that are also part of a Dwelling Unit are not Sleeping Units. Solar Absorptance – The fraction of normal incident solar radiation striking a surface that is not reflected or transmitted. Specific Leakage Area (SLA) – The unitless ratio of the Effective Leakage Area (ELA) of a home enclosure as defined by ASHRAE Standard 62.2 divided by the home’s Conditioned Floor Area, given in the same units of measure. Supply Ventilation System (Supply System) – One or more fans that supply outdoor air to the Dwelling Unit. Supply Ventilation Systems shall be designed and constructed to provide Ventilation air directly from the outdoors to the Dwelling Unit. 18 (Informative Note) The total energy contained in the air (also called enthalpy) is equal to the sum of the latent and the sensible energies contained in the air. 12 ANSI/RESNET/ICC 301-2019 Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 Threshold Specifications – A set of qualification criteria that are established based on a Worst-Case Analysis of an explicit design specification.19 Threshold Rating - A Rating accomplished using Threshold Specifications to determine the Energy Rating Index where verification of all Minimum Rated Features is accomplished through field inspections and testing conducted on every home. Therm – An energy unit equal to 100,000 British Thermal Units (Btu). It is usually used to measure the consumption of natural gas. Tmains – The temperature of the potable water supply entering the residence. Townhouse - A single-family Dwelling Unit constructed in a group of three or more attached units in which each unit extends from the foundation to roof and with open space on at least two sides. Typical Existing Home – A representation of existing U.S. housing stock that assumes standard operating conditions and which is assigned an Energy Rating Index of 130 based on U.S. Department of Energy estimates. U-Factor – The coefficient of heat transmission (air to air) through a building component or assembly, equal to the time rate of heat flow per unit area and unit temperature difference between the warm side and cold side air films (Btu/h∙ft2∙oF) [W/m2∙K]. Unconditioned Space Volume20 – The volume within a building or Dwelling Unit that is not Conditioned Space Volume but which contains heat sources or sinks that influence the temperature of the area or room. The following specific spaces are addressed to ensure consistent application of this definition: If either one or both of the volumes above and below a floor assembly is Unconditioned Space Volume, then the volume of the floor assembly shall be included. If the volume of both of the spaces horizontally adjacent to a wall assembly are Unconditioned Space Volume, then the volume of the wall assembly shall be included. The volume of an attic that is not both air sealed and insulated at the roof deck shall be included. The volume of a vented crawlspace shall be included. The volume of an attached garage shall be included, even when it is conditioned. The volume of a thermally isolated sunroom shall be included. The volume of an attic that is both air sealed and insulated at the roof deck, the volume of an unvented crawlspace, and the volume of a basement shall be included unless it meets the definition of Conditioned Space Volume. 19 (Informative Note) Such as the ENERGY STAR® Reference Design adopted by the U.S. Environmental Protection Agency. 20 (Informative Note) Informative Annex A of Standard ANSI/RESNET/ICC 380 contains a table that summarizes parts of a Dwelling Unit that are included in Unconditioned Space Volume. ANSI/RESNET/ICC 301-2019 13 Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 Uniform Energy Factor (UEF) – DOE’s standard for communicating the energy efficiency of water heaters. Unrated Conditioned Space – A building location used only in Ratings of attached units, beyond the boundaries of the rated Dwelling Unit and serviced by a space heating or cooling system designed to maintain space conditions at 78°F ± 5°F for cooling and 68°F ± 5°F for heating. The energy for conditioning Unrated Conditioned Space is not counted in the Rated Home or Energy Rating Reference Home. This is distinct from Unrated Heated Space, and from Conditioned Space Volume. Unrated Heated Space – A building location used only in Ratings of attached units for shared service equipment such as shared laundry, heating, cooling, hot water, or Ventilation. Unrated Heated Space is outside of the Conditioned Space Volume and only interacts with the Rated Home via the shared services located within. The energy for heating the Unrated Heated Space is not counted in the Rated Home or Energy Rating Reference Home. Variable Refrigerant Flow Multi-Split Air Conditioning and Heat Pump Equipment (VRF) – Commercial-grade air conditioning or Heat Pumps with variable refrigerant flow that use the outdoor air as the heat source or sink (see also Heat Pump).21 Ventilation – The process of providing outdoor air directly to a Dwelling Unit by natural or mechanical means. Such air may or may not be conditioned. Water Loop Heat Pump (WLHP) – Vapor-compression heating and cooling equipment that uses water as its heat source and heat sink (see also Heat Pump). Watt – Energy flow rate equal to one joule per second; approximately equal to 3.412 Btu per hour. Watt-Hour – A unit of energy equal to an energy flow rate of one Watt for a duration of one hour or 3,600 joules; approximately equal to 3.412 Btu. Whole-House Fan – A forced air system consisting of a fan or blower that exhausts at least 5 ACH of indoor air to the outdoors thereby drawing outdoor air into a home through open windows and doors for the purpose of cooling the home. Window Film – Fenestration attachment products which consist of a flexible adhesivebacked polymer film which is applied to the interior or exterior surface of an existing Glazing system. Worst-Case Analysis – An analysis for which the Minimum Rated Features of the Dwelling Unit are configured to provide the largest Energy Rating Index when four ordinal home orientations and the least energy efficient Minimum Rated Features for the specified design are considered by the Analysis. 21 (Informative Note) The large outdoor units typically serve multiple Dwelling Units; indoor units can be ducted units, nonducted units, or a mix of both. 14 ANSI/RESNET/ICC 301-2019 Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 3.3. Acronyms. ACH – Air Changes per Hour ACH50 – Air Changes per Hour at 50 Pascals AFUE – Annual Fuel Utilization Efficiency AHRI – Air-Conditioning, Heating, and Refrigeration Institute ASHP – Air Source Heat Pump ASHRAE – Formerly American Society of Heating, Refrigerating and Air Conditioning Engineers, Inc. ASNT – American Society for Nondestructive Testing ASTM – ASTM International, originally known as the American Society for Testing and Materials (ASTM) Btu – British Thermal Unit CEC – California Energy Commission CFA – Conditioned Floor Area CFIS – Central Fan Integrated Supply cfm – Cubic Feet per Minute COP – Coefficient of Performance CRRC – Cool Roof Rating Council DAPIA – Design Approval Primary Inspection Agency DOE – U.S. Department of Energy DSE – Distribution System Efficiency DWHR – Drain Water Heat Recovery Eae – Electric Auxiliary Energy EER – Energy Efficiency Ratio EF – Energy Factor ELA – Effective Leakage Area EPA – U.S. Environmental Protection Agency EPAct 92 – Energy Policy Act of 1992 ERI – Energy Rating Index ANSI/RESNET/ICC 301-2019 15 Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 FF – Framing Fraction gpm – Gallons per Minute GSHP – Ground Source Heat Pump HSPF – Heating Seasonal Performance Factor HUD – U.S. Department of Housing and Urban Development HVAC – Heating, Ventilating and Air Conditioning IAD – Index Adjustment Design IAF – Index Adjustment Factor IBC ‒ International Building Code ICC – International Code Council IDR – Innovative Design Request IECC – International Energy Conservation Code IMEF – Integrated Modified Energy Factor IPIA – In-Plant Inspection Agency IRC – International Residential Code for One- and Two-Family Dwellings kWh – Kilowatt-Hour MELs – Miscellaneous Energy Loads MEPR – Manufacturer’s Equipment Performance Rating NAECA – National Appliance Energy Conservation Act OPP – On-Site Power Production Pa – Pascal RESNET – Residential Energy Services Network, Inc. SEER – Seasonal Energy Efficiency Ratio SHW – Service Hot Water SL – Standby Loss SLA – Specific Leakage Area SRCC – Solar Rating & Certification Corporation TE – Thermal Efficiency 16 ANSI/RESNET/ICC 301-2019 Copyright © 2019 RESNET. ALL RIGHTS RESERVED. Accessed by Brent Wall ([email protected]), (Strand Systems Engineering, Inc.) Order Number #100770511 on Oct 07, 2019 11:32 AM (PDT) pursuant to License Agreement with RESNET. No further reproduction, no 100770511 TPO – Thermoplastic polyolefin UEF – Uniform Energy Factor VRF – Variable refrigerant flow WLHP – Water L
