Hot water heat pump technology

Calorex heat pumps provide a sustainable heating solution which, compared to fossil fuel or direct electric systems, will dramatically cut operating costs and carbon emission.

Calorex air source heat pumps can use source heat from every climatic condition and are available in different designs to suit space or hot water heating. Calorex products offer industry leading standards of efficiency and durability and are supported by comprehensive technical support that guarantees correct product specification and after sales care.

Unrivalled efficiency

Unlike fossil fuel and direct electric heating systems, a Calorex heat pump is capable of delivering up to five times more energy than it consumes, and unlike solar systems, Calorex heat pumps do not need the sun to shine in order to provide this efficiency.

Heat pump efficiency at differing air temperatures

The heat pump cycle

The Calorex range of hot water heat pumps are a quality range of packaged units specifically designed for hot water heating to 68°C.

alorex heat pumps are simple to install, require little maintenance and alleviate the need for fuel storage tanks and flues that are normally associated with fossil fuel heating systems. Further, due to their unique ability to collect and enhance “free” heat from the air around them, they are kinder to the environment than traditional heating systems and exceptionally inexpensive to operate.

Calorex Pro-Pac range

Pro-Pac heat pumps can be installed outside or in a plant room that has adjacent outside walls. Pro-Pac can be supplied with high speed axial fans.

Calorex 34 range

Designed for outdoor or plant room installation, all 34 range are provided with centrifugal fans as standard. A choice of fan external static pressure offers flexible installation and an ability for the units to provide cold air through a ducted system.

WRAS approved

WRAS is a conformance mark that demonstrates that an item complies to strict standards set out by UK water regulations. This standard gives you peace of mind that approved products will not contaminate your water supply and are safe to use within their stated pressure and temperature ranges.

Typical installation diagram for Calorex hot water heat pump

More information


Product more

Pro-Pac Application guide

Hot water heat pump more

Technical guide

Pro-Pac 30|45|70|90|140 H|HY air water heat more

Associated products


Dantherm Group Italy

Alessandro Bisinella

Direct: +39 045 677 05 33
Mobile: +39 345 112 31 28

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