2021 Hot Water Forum VIRTUAL

March 10 – 18, 2021
Full dates: March 10-11 and March 17-18

“A. O. Smith is once again proud to be a Platinum sponsor of the 2021 Hot Water Forum, which is the signature event for stakeholders in the water heating industry as well as those setting policy, regulations, and technological trends.” – Joshua C. Greene, Esq. Corporate Vice President – Government and Industry Affairs | A. O. Smith Corporation


ACEEE hosted its 13th Hot Water Forum virtually with over 230 attendees, the preeminent annual conference on water heating. The event featured more than 60 speakers with a wide range of perspectives as well as plenaries, 16 break-out sessions, and networking opportunities throughout each day. In addition, we explored the impacts of the pandemic, the growing push toward grid decarbonization, and the electrification of homes and apartment buildings. Attendees also learned about the latest "quantum leap" technologies that are emerging across the industry, including heat pump water heater systems that use alternative refrigerants, are geothermal-enabled, and can function as batteries for energy storage.

ACEEE thanks our sponsors and attendees for their support and encouragement in making our second virtual forum a great success. We also wish to thank the Hot Water Forum Steering Committee and the 60+ presenters and moderators whose commitment in time and preparation were greatly appreciated.

The forum brought together a diverse group of equipment and component manufacturers; water, gas, and electric utility professionals; local, state, and federal agency personnel; energy efficiency program planners, operators, and evaluators; plumbers and installers; policymakers; NGOs; engineers, and consultants.

Click here to see a list of the organizations that participated in our 2020 virtual event.

Please click below for the detailed program and links to the recordings and presentations.






Energy Efficiency Education Partner

Media Partners

Plenary Panels

Efficient Hot Water Systems: Perspectives from Around the World - Wednesday, March 10

This plenary discussed the potential impacts of incorporating water efficiency policies into codes and standards in India and South Africa that could result in a combined reduction of almost 90 million metric tons of carbon dioxide emissions each year. It also provided an update on the International Organization for Standards (ISO) working group, which is creating a worldwide standard on water efficiency products that will help developing countries reduce energy use and emissions. 



Carrots and Sticks in Hot Water: The Heat Pump Water Heater Policy and Program - Wednesday, March 17

This plenary explored the need for flexible loads on the grid, decarbonization policies at the city and state level, incentive HPWH programs in leading states (CA, WA) and nationally, and NBI's experience in leading the Advanced Water Heating Initiative (AWHI).   



If you have any questions about your registration for this event, please contact us for more information.

To join the ACEEE Ally program and receive exclusive benefits, click here.

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Sponsorship Opportunities

We thank our sponsors for their generosity and support of the 2021 Hot Water Forum. If you have any questions about sponsoring our future events, please contact
Chris Perry or Charlie Herron.


Steering Committee
William Bryan
Southeast Energy Efficiency Alliance
George Chapman
Energy Solutions
Jim Cika
International Code Council
Bouba Dieme’
Consortium for Energy Efficiency
Amin Delagh
Pacific Gas & Electric
Paul Glanville
Gas Technology Institute
Kyle Gluesenkamp
Oak Ridge National Laboratory
William Healy
National Institute of Standards and Technology
Bill Hosken
A.O. Smith
Kim Katz
Consortium for Energy Efficiency
Gary Klein
Gary Klein Associates
Ben Larson
Larson Energy Research
Jim Lutz
Hot Water Research
Shawn Oram
Ecotope, Inc.
Ben Schoenbauer
Center for Energy and Environment
Larry Weingarten
Geoff Wickes
Northwest Energy Efficiency Alliance
Sarah Widder
Cadeo Group
Aaron Winer
Northwest Energy Efficiency Alliance


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