Air Source Heat Pumps

A heat pump uses the principles of thermodynamics to absorb energy from the surrounding environment and converts it into usable energy which can provide heating for our homes.

There are two types of air source heat pump – ‘air to air’ and ‘air to water’. The Grant Aerona heat pumps use an air to water system which utilises heat energy captured from the air in ‘wet’ heating system radiators or underfloor heating.

The process uses the same vapour/compression cycle that extracts heat in a domestic fridge. A refrigerant with a low boiling point is exposed to external air temperatures in an evaporator. The liquid boils off to a gas and absorbs the latent heat energy of the air. This gas is then compressed increasing the heat content in the refrigerant, before passing through a heat exchanger where it condenses back to a liquid state while transferring the heat to the water of the heating system. The liquid refrigerant is then re-circulated through the evaporator and the cycle is repeated.

Yes, the heat source used by Grant Aerona heat pumps is entirely renewable which helps reduce the amount of harmful greenhouse gases being released into the atmosphere and, in so doing, lowers the carbon footprint of the household. Heat pump renewable energy is just one way households can lower their carbon emissions.