The Advanced Water Heating Initiative® (AWHI) is a collective of hundreds of organizations and individuals working to realize the significant carbon and energy savings potential of heat pump water heaters (HPWHs).
Upcoming Event: AWHI All Stakeholder Meeting
Thursday, December 11, 10:00 - 11:30 a.m. (Pacific Time)
Join us for the end of year AWHI big tent meeting, where we bring together working groups and individuals interested in HPWHs. Hear the highlights, accomplishents, and lessons learned in 2025. Working group representatives will share what’s top of mind, providing opportunities for connection across groups. We will also give updates on new manufacturers and products. Let us know about your interest in attending to receive a calendar invitation to join the meeting. Let us know about your interest with our online form.
On the fourth annual Heat Pump Water Heater Day in October we celebrated the greatest hot water machine ever assembled! We had over 400 attendees across HPWH day, over 1000 attendees across events that week, and hundreds of organizations taking to the airwaves to promote HPWHs.
Events were focused on residential and commercial heat pump water heaters to bring about the clean energy, low-carbon future we need right now! Watch session recordings and check out related resources.
One of our primary tasks on HPWH Day is to elevate the lesser known advantages of heat pump water heaters. AWHI released a new single and our music video makes one of these points by showing money raining from the sky, a nod to the $500 that ENERGY STAR estimates a family of four will save on their electric bills when switching from an electric resistance water heater. Check out our video.
Find more of the creative HPWH Day posts by searching the hashtags #HPWHday #GoGoHPWH #AWHI on LinkedIn.
With this awards program we recognize and celebrate sustainable water heating market transformation leaders for their work in residential and commercial water heating nationally. We're excited to announce this year's recipients!
Commercial HPWH Market Transformer: Carbon Zero Buildings
Residential HPWH Market Transformer: Efficiency Maine
Equity Program Excellence: Energy Savings Assistance Program (ESA), Southern California Edison
New Construction Excellence: Beazer Homes USA, Inc.
Governors’ Enduring Fight for a Resilient & Sustainable Future. The Alliance’s 2025 Annual Report details how Alliance members are sustaining state-led progress, reducing GHG Emissions 24%, growing GDP by 34%, and driving historic clean energy and clean technology deployment in the U.S. with efforts that include heat pump water heaters.
CO₂ heat pumps are a game changer for building decarbonization—but scaling them up comes with real challenges. During this on-demand webinar by ProspectSV, hear from industry experts on how to overcome design, electrical, and workforce barriers to scale CO₂ heat pumps in large commercial buildings. Speakers from ProspectSV, Point Energy Innovations, IDeAs Consulting, and DMG North share lessons from real projects and strategies for success.
In every year of operation, heat pump water heaters provide all the hot water needed while saving 1 ton of CO2 emissions compared to gas water heaters. Many homeowners are choosing to install their own HPWHs and saving money as a result. Get professional tips and tricks for making your installation smoother and more successful. HPWH installation videos with leading HPWH installers Steve Brotton and Austin from Great Northwest Installations are available from AWHI. Watch a complete installation or view in 10 steps.
In Heat Pumps and Cardigans, Joe Wachunas interviews manufacturers about their HPWHs. In a recent podcast he talked with representatives from Navien. With Navien’s entrance into the U.S. HPWH market, there are now over 12 manufacturers selling HPWHs. Check out the article and recording on Substack.
A personal account of the inspiration and decision to move from an instant gas water heater to a heat pump water heater with links to resources that make the case clear for HPWHs and provides helpful support to make the switch.
A technological evolution of heat pumps consolidates both space conditioning (heating and/or cooling) and domestic hot water functions into a single, efficient unit
HPWHs are the most efficient water heating technology available. Known for their efficiency, cost savings, and environmental benefits, they continue to grow in popularity. This factsheet will guide you on what you need to know and provide resources to simplify HPWH adoption in your home.
HPWHs in the News
Electrify your home with our handy roundup before tax credits expire. You could save thousands of dollars on heat pumps, solar, and other home energy updates if you act before Dec. 31. Our explainers and guides will get you up to speed fast. Published by Canary Media, 11/21/2025.
Rheem Supports Heat Pump Water Heater Day Efforts. Rheem joined Heat Pump Water Heater Day activities to generate awareness around the most energy-efficient and sustainable water heating solutions on the market. Published by PHCPPros, 10/21/2025.
Now, more than ever, it is crucial to have national leadership advancing heat pump water heaters. The Advanced Water Heating Initiative is the national voice advancing heat pump water heating. Add your support and transform the market for heat pump water heaters. Visit the 2025 Sponsorship Overview to review options.
Thank you to our supporters!
AWHI is a national collaboration between building owners, utilities, agencies, state and local government, engineers, educators, manufacturers, and the supply chain with stakeholders from hundreds of entities. We invite your organization to join the AWHI supporters below and others that support and guide this national market transformation effort.
Connect with usto find out more or discuss sponsorship options.
