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    • Home
    • About Us
    • Products
      • MEDUSA Heat Pump
      • Skid Packages
      • Mixing Stations
    • Catalogued Packages
      • Hydronic Heating Skid
    • Projects
    • Contact
    • What's New
  • Home
  • About Us
  • Products
    • MEDUSA Heat Pump
    • Skid Packages
    • Mixing Stations
  • Catalogued Packages
    • Hydronic Heating Skid
  • Projects
  • Contact
  • What's New

The Wait is Over, Meet the

We’re proud to unveil the MEDUSA PCM Integrated Heat Pump, a breakthrough in commercial water heating that’s been years in the making. This isn’t just another system—it’s a leap forward.


What makes it revolutionary? No bulky tanks, no unnecessary complexity. The MEDUSA uses cutting-edge Phase Change Material (PCM) technology, offering 375 gallons of thermal storage with a footprint so small, you’ll forget about traditional tank systems. Perfect for high-demand spaces like healthcare facilities, universities, and multifamily housing, this system minimizes installation times and errors while ensuring you get the performance needed to keep up with even the toughest commercial applications.


And the benefits don’t stop there. Waterborne pathogens? Virtually eliminated. Footprint? Reduced. Installation headaches? Gone. It’s the solution contractors and engineers have been waiting for, built to make the move toward all-electric systems easier than ever.


With the MEDUSA, we’re pushing the boundaries of what’s possible—creating a system that meets the growing demands for decarbonization and sustainability without compromising on efficiency or reliability.


This is the future of water heating, and it’s here now.  

This game-changing water heater doesn’t need water tanks and uses Phase Change Material (PCM) for thermal storage.

THE 1st COMMERCIAL HEAT PUMP WATER HEATER WITH PCM TECHNOLOGY.

REVOLUTIONIZING COMMERCIAL WATER HEATING: THE FUTURE IS HERE

It’s an all-in-one solution that dramatically reduces system footprints for new construction and retrofit while minimizing waterborne pathogen risk, making it ideal for high-demand applications like universities, multifamily housing, and high-risk healthcare facilities.

KEY FEATURES:

  • Low GWP Refrigerant
  • 375 Gallon Equivalent
  • Thermal Storage
  • 10-Year PCM Warranty
  • Outdoor Rated
  • Ductable Electric Backup
  • 2-Stage Freeze Protection
  • Smart Remote Monitoring
  • Modular Configuration
  • Color-Coded Service Valves
  • Factory-Tested
  • Made in USA

About the medusa

What are these PCM Batteries?

  • 4X more energy dense than water.
  • Sodium Acetate Trihydrate : Non-Toxic, Non-Flammable, Recyclable, Salt
  • Used as hand warmers or heat packs
  • Food Industry: Seasoning and preservative 
  • Tested to more than 40,000 cycles. 
  • Each PCM battery has an HX submerged in the material for charging and discharging with hydronic circuits.
  • Built-in electric backup
  • 30,000+ of these batteries have been successfully deployed in residences and large buildings.
  • Stocked in Half Moon Bay, CA 

ENGINEER BENEFITS

DEVELOPER / OWNER BENEFITS

CONTRACTOR BENEFITS

 •SPECIFICATIONS, SCHEDULES, DRAWINGS AVAILABLE


•SIZED TO ACCOMMODATE A WIDE RANGE OF APPLICATIONS


•DESIGN/CONTROLS REVIEWED & APPROVED 

CONTRACTOR BENEFITS

DEVELOPER / OWNER BENEFITS

CONTRACTOR BENEFITS

•MINIMIZED MARGIN OF ERROR WITH SINGLE SOURCE RESPONSIBILITY


•SIGNIFICANT TIME SAVINGS


•PRE-PIPED/

WIRED/FITTED/TESTED

DEVELOPER / OWNER BENEFITS

DEVELOPER / OWNER BENEFITS

DEVELOPER / OWNER BENEFITS

 •LOWER UTILITY COSTS DUE TO DEMAND RESPONSE


•CONSOLIDATED FOOTPRINT ALLOWS FOR MORE REVENUE GENERATING REAL ESTATE


•OPTIMIZATION AND REMOTE MONITORING WITH NOTIFICATIONS

Downloads:

Brochure Sheet - MEDUSA (pdf)

Download

Medusa FAQ Sheet (pdf)

Download

Request technical details

Get technical details and information about the MEDUSA by requesting a submittal, P&ID, or contact us with any questions. 

(800) 543-1122

Request more information about the MEDUSA:

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Frequently Asked Questions

Please reach us at Sales@htecompany.com if you cannot find an answer to your question.

The MEDUSA integrates Phase Change Material (PCM) technology which has 4x the density of water. This allows the MEDUSA to store thermal energy equivalent to 375 gallons of water without actually storing water, saving space and cost. 


MEDUSA reduces energy costs by over 60% compared to gas boilers or electric resistance systems, thanks to its highly efficient heat pump and PCM technology. 


Yes, the MEDUSA is designed to operate efficiently in a range of climates, with proven performance in both warm and cold environments. 


The PCM thermal batteries are designed to last and even come with a 10-year warranty. Each MEDUSA unit contains 5 thermal batteries that are accessible and removable from the rear panel, making servicing painless.  an answer to this item.


Yes. The MEDUSA integrated heat pump water heater is air source and can be ducted. The heat pump is equipped with a blower fan designed for such applications. 


Interested in using THE mEDUSA in your projects? Reach out to one of our water heating experts.

Contact an Expert

Htec Packaged Systems & Controls

Half Moon Bay, CA

(800) 543-1122

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