This website details the Residential Cold Climate Heat Pump Challenge, an initiative by the U.S. Department of Energy aimed at promoting the adoption of cold-climate heat pumps in homes.

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 guide outlines the standard for commissioning heating systems, highlighting how RESNET/HERS-rated homes can enhance their HERS scores through effective commissioning practices.

This video tutorial provides an overview of the workflow and field measurement procedures for Standard 310.

This case study examines a retrofit project that incorporates a dual fuel air source heat pump with an existing furnace, completed in partnership with an affordable home builder.

This guide serves as a building science translator, assisting contractors in translating technical topics into language that resonates with homeowners during sales conversations.

The website offers valuable resources, including best practices and case studies, to support building owners and HVAC professionals in optimizing system performance and reducing energy consumption. The Smart Tools for Efficient HVAC Performance (STEP) Campaign, led by the U.S.

This report provides guidelines for proper HVAC system sizing to optimize energy efficiency and performance in residential buildings.