Models availabe from 5.8KW-33KW Axen Water Source heat pump utilizes free renewable energy from ground the units are highly-efficient with low running costs, low carbon emissions. It provides energy-efficient space heating and domestic hot water for residential and small commercial application. All year round solution: a. Domestic Hot water all year round. b. Space Heating c. Spacing Cooling Ecological and Economical Heating: 1) By making use of the renewable energy from the ground, it consumes much less energy without direct CO2 emission. 2) It is efficient and economical alternative to both fossil fuel boilers and air-conditioning systems.