Air source heat pumps use basic thermodynamic principles to convert latent heat contained within the air we breathe into heat energy that can be used to provide heating and hot water. This ‘ambient heat’ is replenished by the sun making our heat pumps both effective and environmentally friendly.
There are two basic types of air source heat pump – ‘air to air’ and ‘air to water’. Grant Aerona 3 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.
With the recent fluctuations in price and supply of fossil fuels, Grant air source heat pumps offer both an environmentally and economically sustainable alternative. Home heating in the UK accounts for approximately 30% of CO2 emissions and the heat source used by Grant Aerona 3 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.