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

This database contains specifications for cold climate designations across various system types, along with an accompanying product list.

This product list features Cold Climate Air Source Heat Pumps (ccASHP) that meet the latest ccASHP Specification requirements. It includes systems with specified performance levels and reported performance standards.

This case study features a satisfied cold-climate ASHP customer from an Electric Minnesota Cooperative's service area.

This guide offers utility program staff essential resources for developing materials aimed at contractors and homeowners. It features the ccDHP specification, recommended practices, application-specific considerations, and supplementary resources.

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

This report analyzes field studies of air-source heat pumps, finding that even at temperatures below 0°C, these systems maintain greater efficiency compared to fossil fuel and electric resistive heating options.

This calculator estimates annual heating costs for various heating systems.