IMT and the Britt/Makela Group (BMG), with support from the National Fenestration Rating Council (NFRC), have developed a guide to help those with Simple Buildings comply with the 2012 International Energy Conservation Code (IECC). Though the goal of the guide is to make the energy code more accessible for anyone who is interested, the target audience is designers, engineers, and building officials.

The term “simple” is not an indicator of building size, but of building components. A Simple Building can range from a 3,000 square foot (sq. ft.) dentist office to a strip mall, to a 100,000 sq. ft. warehouse. The blue sidebars in the guide list the criteria for Simple Buildings and the systems to which this guide applies. If your building does not meet these criteria, you will need to refer directly to the complete text of the 2012 IECC for guidance.

The guide is intended to give helpful information on the code provisions applicable to your building and is organized by four components:

  • Building Envelope
  • Mechanical Systems
  • Service Hot Water Heating
  • Electrical Power and Lighting Systems

Download the guide for free and for more information contact IMT at

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