07889 949 959 or 07840 975816 info@h2orenewables.co.uk

Air and ground source heat pumps

Air source heat pumps

Extracting energy from the air

Air source heat pumps work by extracting heat from the air around the external unit, a large fan sucks the air across a heat exchanger filled with refrigerant, which is at a lower temperature than the surrounding air. The refrigerant harvests this heat and transfers it to a compressor where it is pressurised to create higher levels of heat. It is these higher temperatures which heat the house or hot water.

Air source units can be connected to oversized radiators, to permit lower flow temperatures and increased efficiencies, underfloor heating and suitably designed hot water cylinders. In general they are around 300% efficient and can save approximately 30% in comparison with natural gas and 50-70% when compared with oil or LPG.

Air source installation costs are lower than ground source, but the lifecycle costs are higher due to the increased wear on the outdoor unit, efficiencies are very broadly similar but ground source is still slightly better.

Ground source heat pumps

Heat energy from the ground

Ground source heat pumps work by extracting heat from the earth via a network of pipes laid in the ground or inserted into bore holes. A glycol mixture is circulated through the network at a lower temperature to the earth around it. The refrigerant harvests this heat and transfers it to a compressor where it is pressurised to create higher levels of heat. It is these higher temperatures which heat the house or hot water.

Ground source units can be connected to oversized radiators, to permit lower flow temperatures and increased efficiencies, underfloor heating and suitably designed hot water cylinders. In general they are around 300% efficient and can save approximately 30% in comparison with natural gas and 50-70% when compared with oil or LPG.

Ground source installation costs are higher than air source, but the lifecycle costs are lower due to the increased wear on the outdoor unit in an air source installation, efficiencies are very broadly similar but ground source is still slightly better.

Enquire now

8 + 8 =

Contact us to find out more

Please complete the enquiry form above or call 07889 949 959 or 07840 975816
Follow us on Twitter: @justrenewable