Publications

This technical support document (TSD) is designed to explain the technical basis for the COMcheck software as originally developed based on the ANSI/ASHRAE/IES Standard 90.1-1989 (Standard 90.1-1989). Documentation for other national model codes and standards and specific state energy codes supported in COMcheck has been added to this report as appendices. These appendices are intended to provide technical documentation for features specific to the supported codes and for any changes made for state-specific codes that differ from the standard features that support compliance with the national model codes and standards. Beginning with COMcheck version 3.8.0, support for 90.1-1989, 90.1-1999, and the 1998 IECC and version 3.9.0 support for 2000 and 2001 IECC are no longer included, but those sections remain in this document for reference purposes.

This report describes solutions to the common PRM adoption challenges, including calculating energy savings by fuel type and electricity demand savings relative to current code and avoiding “fuel switching” when reporting savings of the proposed design relative to the current code. The calculations described in this technical support document are automated in the ASHRAE Standard 90.1 Performance Based Compliance Form and the Compliance Form Companion Tool

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The Tennessee State Fire Marshal’s Office will implement enforcement of adopted energy codes for new building project submissions as of Friday, July 1, 2011. The energy codes adopted are:

• All buildings other than state buildings: The 2006 International Energy Conservation Code
• State buildings: ASHRAE Standard 90.1-2007.

A research project in the state of Tennessee identified opportunities to reduce homeowner utility bills in residential single-family new construction by increasing compliance with the state energy code.  The study was initiated in September 2017 and continued through July 2018.  Analysis of the data has led to a better understanding of the energy features present in homes and indicates over $2.5 million in potential annual savings to Tennessee homeowners that could result from increased code compliance.

A research project in the state of Texas identified opportunities to reduce homeowner utility bills in residential single-family new construction by increasing compliance with the state energy code. The study was initiated in October 2014; data collection began in March 2015, and continued through October 2015. During this period, research teams visited 133 homes in 30 counties in and around Houston during various stages of construction, resulting in a substantial data set based on observations made directly in the field.

The purpose of this report is to document findings and final results from the Texas field study, including a summary of key trends observed in the field, their impact on energy efficiency, and whether the selected education and training activities resulted in a measurable change in statewide energy use.

This document outlines resources to help facilitate compliance documentation and submittal reviews.

This document provides recommendations for organizing effective and efficient submittal reviews of projects that follow ASHRAE 90.1 Section 11 and Appendix G.

A research project in the Commonwealth of Virginia identified opportunities to reduce homeowner utility bills in residential single-family new construction by increasing compliance with the state energy code. The study was initiated in August 2017 and continued through May 2018. During this period, research teams visited 138 homes during various stages of construction, resulting in a substantial data set based on observations made directly in the field.

November 16, 2023 - Building Energy Codes Webinar Series: What You Need to Know About the New Energy Standard for Commercial Buildings: ASHRAE 90.1-2022 presentation.

Presentation slides from the 10/21/21 Zoning and Land-Use Regulation: Emerging Tools for Advancing Climate-Friendly Development 2021 Summer Seminar Series webinar.