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Welcome to the trade’s go-to place for Sunamp installation instructions, technical leaflets and training sessions about Sunamp’s range of thermal batteries.

Up to four times smaller than the average family’s hot water tank, our thermal batteries can replace traditional hot water cylinders and work with boilers, mains electricity, heat pumps and solar panels to deliver instant hot water and make homes more energy efficient and sustainable.

What’s more, our Thermino heat storage batteries are easy to install, require no routine maintenance and come with a market-leading 10-year warranty.

Thermino instruction and installation manuals, and data sheets

You’ll find technical data, dimensions, part numbers, installation instructions and much more in these information leaflets.

Indirect hot water cylinder replacements

Thermino hp

For heat pumps

Thermino hp-SG

For heat pumps from Samsung

Thermino hp-VT

For heat pumps from Vaillant

Thermino hpPV

For heat pumps from Vaillant linked to solar PV

Thermino iPV

For solar PV and a boiler, with grid electricity as back up

Thermino i

For boilers, with standby electric heating

Direct hot water cylinder replacements

Thermino ePV

For solar PV, with grid electricity as back up

Watch how to install a Sunamp thermal battery as a direct cylinder replacement



Our previous heat battery range, UniQ, is widely installed in homes across the UK. It was succeeded by Thermino, our fourth-generation range for domestic hot water, in December 2021.

The instruction manuals for each UniQ battery model are available to download.

Visit the UniQ page

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If you have any technical queries or questions, please fill out the enquiry form and member of our support team will get back to you.

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