Frankfurt, 18 March 2025: Heat battery manufacturer Sunamp, a leader in thermal storage technologies, has added a low-power model to its range of Thermino® heat batteries for hot water to cater for situations where only a smaller electrical power supply is available.
The new models were developed to respond to challenges from the Italian market where homes may have fuse ratings as low as 16A meaning a total of 3kW. By reducing the charging power below 2 kW the new Thermino models can serve such homes and applications in other homes where incoming power capacity is limited such as holiday lodges and park homes that often also have 16A supply.
Low power Thermino heat batteries have a heating element capacity of 1800 watts, adding to the range of existing models with a power rating of 2800 watts (at 230V, 50 Hz). By charging a little slower, which increases charge time by one third, they are compatible with lower rated power supplies. As charging often happens overnight or in the afternoon, users will experience little or no change in their hot water supply – just as much will be available on tap, as the energy content of the products remains the same.
The new models remain compatible with a range of Solar PV diversion controllers including my-PV, Elios4you from 4-noks, and myenergi eddi.
Thermino heat batteries, which use Sunamp’s proprietary Plentigrade® phase change material, are up to 4x smaller than the equivalent hot water cylinder, can store energy from renewable and non-renewable sources and enable heat pumps to be fitted in space-constrained homes which can’t easily accommodate a bulky hot water cylinder. The thermal batteries can store grid electricity during off-peak hours when tariffs are lower, releasing it as high sanitation, mains pressure hot water at a constant temperature instantaneously on demand.
Low-power Thermino heat batteries are available in both models: the Thermino ePlus, the space-saving alternative to direct hot water cylinders, and Thermino xPlus heat batteries which replace traditional indirect and heat pump hot water cylinders.
Launching the product today at ISH in Frankfurt, the world’s leading trade fair for HVAC + Water, Thermino product manager Catalina Dobas said:
“Sunamp thermal batteries are engineered for easy installation and operation and fit a variety of settings so I’m delighted that we can now offer even greater choice. The new low-power options are ideal for homes with lower fuse ratings. Combined with the existing benefit of compactness they ideally suit single-family homes, apartments and holiday homes. By offering flexible power rating configurations and cutting-edge storage technology, this product underscores our commitment to driving innovation in energy efficiency and sustainability.”
Thermino low-power thermal storage is now available for purchase through Sunamp authorised distributors. See www.sunamp.com for details.
Maurizio Zaglio, global head of partnerships at Sunamp, said: “This 1.8 kW alternative is also available to Sunamp’s OEM and White Label partners. Sunamp has a very flexible approach to support OEMs with customised heat batteries to serve a wide range of applications. OEMs wishing to benefit from Sunamp’s first-mover, patented and market-leading heat battery technology should contact us.”.
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For more information contact Maggie Wright on 07801 710360 or email [email protected]
