The CEE Directory is a comprehensive resource listing energy-efficient residential and small commercial equipment, including central air conditioners, heat pumps, gas water heaters, furnaces, and boilers certified through AHRI. 

This five-hour training series supplements industry knowledge with key insights from ComEd, helping contractors tap into the growing heat pump market in Northern Illinois.

This website features a variety of heat pump resources for consumers, contractors, and program staff.

The Department of Energy's heat pump information page offers guidance on the benefits, types, and uses of heat pumps, as well as tips for selecting and maintaining them.

This database is a centralized data repository that provides easy data upload and download for the nation's leading heat pump and heat pump water heater researchers. ​

This directory includes guides from Building America's Solution Center that cover various heat pump technologies and topics such as sizing, installation, best practices, and more.

The Building America Solution Center provides access to expert information on hundreds of high-performance construction topics, including air sealing and insulation, HVAC components, windows, indoor air quality, and much more.

The Building Science Education (BSE) Solution Center provides curated and free-to-use training materials on the fundamentals of building science.