This class will cover the significant changes to the Commercial Provisions of 2021 edition of the International Energy Conservation Code® (IECC®). We will examine changes to the Envelope, Mechanical, and Lighting provisions. A brief review of residential multifamily construction taller than 3 stories will also be included. This class will assist code officials, plans examiners, inspectors, contractors, design professionals, and others involved in building energy efficiency by identifying specific changes to the code and explaining the reasoning behind these changes.