Standards & Codes

Trane and ASHRAE/IESNA Standard 90.1

ASHRAE Standard 90.1 is a code-language document that has been adopted as state or local energy code in many jurisdictions. Alternatively, a jurisdiction may choose to adopt the International Energy Conservation Code (IECC), which allows ASHRAE 90.1 as a compliance path. Standard 90.1 is updated by addenda that are compiled every 18 months, and is published in full every three years.

Trane leads the industry in energy efficiency in many equipment categories and can provide equipment that meets the prescribed efficiency levels of ASHRAE 90.1. In many cases, Trane equipment exceeds the minimum requirements, and can help to generate energy savings for reducing operating costs, and for demonstrating environmental stewardship. Find out more about ASHRAE 90.1 and LEED.

The Performance Rating Method (Appendix G) of ASHRAE Standard 90.1-2004 is the basis for calculating energy savings. The calculation requires the use of a full-featured simulation program. Trane offers the industry’s most time-tested analysis software in TRACE™ building load and energy analysis programs to model building performance. Trane is continuously adding features that can help demonstrate savings and compliance with energy code. Trane’s CDS™ support center is available for assistance to run these programs.

Going Beyond Minimum Requirements
ASHRAE 90.1 defines minimum requirements. Building and systems can always go beyond these minimum requirements, and above-code and/or rebate programs typically require that you do. ASHRAE has provided the following guidance for exceeding ASHRAE 90.1 by 30% or more:

Advanced Energy Design Guides (AEDG)
The AEDG for small retail buildings, small office buildings, and K-12 school buildings have been published. They can be ordered in print version from ashrae.org, or downloaded for free. The AEDG can be used as a prescriptive path for achieving two LEED points.

ASHRAE Standard 189P
This proposed standard is currently in development. Its goal is to exceed 90.1-2004 by 30%. Standard 189 is co-sponsored by the U.S. Green Building Council (USGBC).

For more information or training

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ASHRAE Standard 90.1-2004 resources

ASHRAE Standard 90.1-2004 resources
Implementation of 90.1 in energy codes

Implementation of 90.1 in energy codes

State or local energy code officials are the best source of information about your specific energy code. Several sites have attempted to compile information on what states are doing:
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Trane, a business of Ingersoll Rand - the world leader in creating and sustaining safe, comfortable and energy efficient environments - improves the performance of homes and buildings around the world. Trane solutions optimize indoor environments with a broad portfolio of energy efficient heating, ventilating and air conditioning systems, building and contracting services, parts support and advanced controls for homes and commercial buildings.