What is an air source heat pump?
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What is an air source heat pump?

Air source heat pumps are a sustainable alternative to traditional fossil fuel heating systems and with their green credentials and high efficiency operation, they will play a major role in helping the country achieve its net zero carbon emission targets.

In brief, air source heat pumps utilise the heat energy in the air and convert it into useable energy to heat homes. Grant heat pumps are ‘air to water’ systems (as opposed to ‘air to air’ heat pumps) which means that they capture heat energy from the air and transfer this into ‘wet’ heating systems, such as radiators or underfloor heating.

Grant’s Aerona³ heat pumps are monobloc units. They use a vapour compression cycle which is the same as that used to extract heat from a domestic fridge. The heat pump draws air in and transfers it over an evaporator where R32 refrigerant is exposed to this air. The liquid refrigerant, which has a low boiling point, boils off to a gas and absorbs the latent heat energy within the air. The gas is then compressed which increases the heat content in the refrigerant before passing through a heat exchanger. Here, the gas condenses back to a liquid 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.

The system water which has been heated up then exits the rear of the heat pump via flow and return pipework and is circulated throughout the rest of the central heating to provide space heating and hot water within the home.

Please click here to read more about Grant's Air Source Heat Pump range.

What is an air source heat pump?