Keston has entered the air-source heat pump market with Airgen, designed specifically for UK applications.

The British Isles is temperate and often humid so flow temperatures need to be high to satisfy radiator circuits and hot-water requirements. The Airgen brings domestic hot water up to 65°C, without needing an immersion heater or direct resistance heater. Airgen also provides space heating for radiators and underfloor heating systems from 35°C to 55°C.

The Airgen is available as a 4.5 kW system designed for small flats, and 9 kW and 12 kW versions for larger properties.