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Conference

2026 Hot Water & Hot Air Forums

March 24 - 26, 2026
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    Overview

    Renaissance Phoenix Downtown Hotel

    Keeping homes and other buildings warm in winter and providing hot water represents more than half of U.S. buildings’ energy use. ACEEE’s Hot Water and Hot Air Forums showcase how efficiency reduces this energy use, and corresponding utility bills and peak electric loads. The Forums bring together equipment manufacturers, utility program managers, implementers, and researchers in an engaging, collaborative space to discuss strategies that work.

    By attending, you will learn about the latest technologies, their performance in the lab and under real-world conditions, and ways that utilities and policymakers are speeding their adoption. As heating air and water requires so much energy and is so intertwined with daily life, driving down costs and ensuring households have a positive experience with these technologies is crucial.

    We will highlight customer concerns as well as the voices of those who work directly with customers, such as installers. Attendees will benefit from opportunities to hear from industry leaders, connect with the whole community at multiple breaks and receptions, and see products and speak to manufacturers in person.

    Click here to see a list of organizations that participated in the 2025 Hot Water and Hot Air Forums.

    Sponsors

    Platinum

    Gold

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    Registration

    Registration for the Forums is open.

    Registration TypesRegistration Rates
    ➜ General AttendeesEarly Bird (by 1/19)Regular (by 2/20)Late (after 2/20)
    General Attendee | Hot Air Forum (March 24-25)$1,075$1,175$1,275
    General Attendee | Hot Water Forum (March 25-26)$1,075$1,175$1,275
    General Attendee | Both forums (March 24-26)$1,675$1,675$1,675
    ➜ Speakers & ModeratorsRegistration Rates
    Speaker/Moderator | Hot Air Forum (March 24-25)$1,025
    Speaker/Moderator | Hot Water Forum (March 25-26)$1,025
    Speaker/Moderator | Both forums (March 24-26)$1,575
    ➜ StudentsRegistration Rates
    Student | Hot Air Forum (March 24-25)$625
    Student | Hot Water Forum (March 25-26)$625
    Student | Both forums (March 24-26)$925
    *Students must include proof of enrollment or transcript.

    Cancellation Policy: Cancellations made before March 10, 2026 will be given a full refund less a $100 processing fee. Refunds will not be made for cancellations after this date except on a case-by-case basis.

     

    Program

    To view the full program, click here.

    To view the Program-at-a-Glance, click here.

     

    Fireside Chat: Manufacturer Perspectives on Efficiency Opportunities in HVAC and Water Heating – Tuesday, March 24 (5:00–6:00 p.m.)

    Jennifer Layke, ACEEE’s new executive director, will host four industry experts to discuss challenges facing the HVAC and water-heating industries, new opportunities for energy efficiency, and how manufacturers and efficiency advocates can continue working together. This high-level session is open to both Hot Air and Hot Water registrants!

     

    Plenary Panel: Load Growth, Affordability, and Impacts of Space and Water Heating – Wednesday, March 25 (9:00–10:30 a.m.)

    As new loads connect to the electric grid, we are seeing increased strain and rising bills. Natural gas prices are also rising. Speakers from around the country will discuss the unique benefits of space- and water-heating efficiency on peak load and affordability, and successful applications in their regions.

     

     

    Additional Events

     

    Shameless Commerce – Wednesday, March 25 (5:30–7:00 p.m.)

    This “Shameless Commerce” event, in which participants pitch new products and services, is one of our most popular forum activities. In a rapid-fire format, each participant will have the opportunity to present a three-minute infomercial to the audience. Each pitch will be followed by brief audience Q&A. This event will be hosted alongside the Wednesday evening reception.

    Submit your pitch idea here. Applications are due Monday, March 23.

     

    Accommodations

    The 2026 Hot Water and Hot Air Forums will be held at the Renaissance Phoenix Downtown Hotel in Phoenix, Arizona. 

    To take advantage of our group rate, book your room here. If the dates you are booking are sold out within our room block, search for hotel availability via our trusted partner aRes Travel.

     

    Scholarship Program

     

    Join the Next Generation of Efficiency Leaders 

    We offer a limited number of scholarships for students and trainees to attend the Hot Water & Hot Air Forums. The scholarship will cover full conference registration fees.  

    If you’re passionate about efficiency, electrification, and affordability, this is your chance to: 

    • Learn directly from national experts and practitioners
    • Explore real-world solutions shaping the future of buildings
    • Connect with leaders who are hiring, mentoring, and innovating 

    Scholars attend technical sessions, join networking events, and become part of a professional community working to lower energy costs and cut emissions. 

    Transportation and lodging are not included. 
    Interested in applying for a scholarship? Contact the ACEEE conferences team to learn more. 


    Last year, David joined us as a scholar. It was a great opportunity to expand 
    his network, deepen his expertise, and build a career in energy efficiency. 
    Apply to join us this year in Phoenix! 

     

    Opportunities to Support Emerging Professionals 

    Invest in the Future of the Efficiency Workforce 

    We invite scholarship sponsors to help expand our scholarship program by funding scholarships for trade students and emerging professionals. 

    Your support helps students and emerging professionals: 

    • Gain first-hand knowledge of cutting-edge technologies and practices.
    • Engage with industry leaders and peers.
    • Build critical connections that can accelerate their careers in energy efficiency.  

    Sponsoring is a win-win: 

    • Demonstrate your commitment to workforce development and innovation.
    • You help students, emerging professionals, and transitioning workers gain access to valuable learning and networking.
    • Your company will be recognized from the podium and the conference app. 

    To sponsor scholarships, don't hesitate to get in touch with the ACEEE conferences team.

     

    Call for Presentations

    The deadline to submit presentations has passed.

    2026 Hot Water & Hot Air Forum Tracks

    Affordability

    • Reducing costs
    • Financing
    • Peak load and demand flexibility

    Policies and programs

    • Regional successes and roadmaps
    • Test methods and metrics
    • Electric rate design

    System design and installation

    • Consumer education
    • Installer training
    • Commercial hot water
    • Health and safety

    Technologies

    • Commercial and residential systems  
    • Plug-in, rooftop, and combi units
    • Refrigerant transition
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