Thermino thermal storage for domestic hot water

Thousands of Sunamp thermal batteries are already in homes across the UK, US and Europe storing heat from low-carbon energy sources and releasing it for mains-pressure hot water when needed. The Thermino range is now available in Canada.

Our Thermino batteries replace traditional hot water cylinders – direct (for grid electricity & solar PV) or indirect (for boilers, heat pumps and solar PV).

They are up to four times smaller than the equivalent hot water tank because they are filled with our energy-dense phase change material, Plentigrade.

Why use a Thermino thermal battery for hot water?

On demand

Save space

Use renewables

Cut CO2

Easy fit


No mandatory maintenance

10-year warranty

The Thermino range

The Thermino range – our fourth-generation heat store for hot water – maximizes the use of renewable energy and can be charged by grid electricity and boilers.

The batteries are designed for retrofitting to existing hot water systems or specifying for use in new build projects. Their sleek, super-compact design means they look good in any home and free-up valuable storage space.

Indirect cylinder replacement

Thermino xPlus

Thermino ts

Direct cylinder replacement

Thermino ePlus