Sunamp Heat Batteries
Sunamp’s UniQ Heat Batteries are designed to efficiently store heat for domestic hot water systems or space heating. Their super-compact Heat Battery technology has been intelligently designed to provide a clean, efficient and cost-effective thermal energy storage solution.

Using phase change materials (PCM), they can be charged by electricity, air source heat pumps, ground source heat pumps, boilers and photovoltaics (solar panels) and can be retrofitted to existing hot water systems or specified for use in new build projects.
Working with everything from gas boilers to solar and heat pumps, Sunamp Heat Batteries can substitute a standard hot water tank. They deliver cascades of hot water and highly responsive space heating with superb efficiency and proven savings of up to 75% on utility bills.
The UniQ batteries are available in 7 different models with 3kWh, 6kWh, 9kWh and 12kWh capacities. For domestic hot water we recommend the 6kWh battery for 1-2 bed properties; 9kWh battery for 3 bed properties; 12kWh battery for 4 bed properties.
For space heating, you may need to use several heat batteries in parallel and recommend contacting us for advice for configuring such systems.
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HW
VIEWSunamp UniQ HW 3
£1,752.70
Sunamp heat battery for charging from a boiler or high temperature heat pump (HTHP), perfect for apartments or off-grid applications. -
eHW
VIEWSunamp UniQ eHW 3
£1,800.17
Sunamp heat battery for charging from off-peak grid electricity, perfect for apartments or off-grid applications. -
HW+iPV
VIEWSunamp UniQ HW+iPV 3
£1,941.20
Sunamp heat battery for charging from a boiler or heat pump and PV electricity, perfect for apartments or off-grid applications. -
HW+i
VIEWSunamp UniQ HW+i 3
£1871
Sunamp heat battery for charging from a boiler or heat pump with immersion from the grid as backup, perfect for apartments or off-grid applications. -
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eHW+iPV
VIEWSunamp UniQ eHW+iPV 3
£1,870.37
Sunamp heat battery for charging from mains and PV electricity, perfect for apartments or off-grid applications. -
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Low Temp HP
VIEWSunamp UniQ HW+iLTHP Samsung
£1,922.02
Sunamp heat battery for charging from a boiler or a Samsung low temperature heat pump with immersion from the grid as backup -
UniQ (Old)
VIEWSunamp UniQ 12 (CLEARANCE)
£2,641.60
The high-capacity UniQ 12 stores the same heat as a 280L hot water cylinder, and provides sufficient mains pressure domestic hot water for large houses. Multiple units can be installed in parallel for space heating applications.Highest capacity -
Accessories
VIEWThermostatic mixing valve
£109.20
Sunamp units deliver water at 58 degrees (the temperature at which the phase change material melts). A TMV is usually required to bring the temperature down to supply showers, baths and hot water taps.