Much like ground-source heat pumps, air-source heat pumps provide Oxfordshire, Buckinghamshire, Berkshire and Surrey properties with energy through radiators and through underfloor heating systems. They are compatible with electric or oil-fuelled boilers, or they can be docked with your current hot water or heating system.


At Steve Cross Heat Pumps, we provide customers with complete solutions which include heat pump installation, heat pump servicing and heat pump repairs.


Air-source heat pumps operate through a controller which balances the operational system to transfer heating and hot water. By monitoring external air temperatures and adjusting output, air-source heat pumps compensate for seasonal conditions. They are perfect for Oxfordshire, Buckinghamshire, Berkshire and Surrey properties without sufficient land space for ground-source heat pumps, and for new homes with above-average insulation features.

How do Air-Source Heat Pumps Work?


Like ground-source systems, air-source heat pumps use the same principles as a domestic refrigerator but extract heat from outside air. Air-source heat pumps distribute air across an evaporation heat exchanger via a fan. Refrigerant in these heat pumps boil at temperatures as low as -30˚C so energy can be pulled from the air even during the winter months.


Efficiency of the system is vital and, for this reason, Steve Cross Heat Pumps provide air-source ground pump servicing and air-source ground pump repairs throughout the Oxfordshire, Buckinghamshire, Berkshire and Surrey areas on a full year-round basis.

There are two types of air-source heat pumps:


  • Air-to-water heat pumps circulate heat through to central heating systems
  • Air-to-air heat pumps which circulate warm air using fans
air source heat pump

Are Air-Source Heat Pumps Expensive to Run?


During installation, air-source heat pumps require no ground disruption and no ground or water source. This makes installation less costly. While some experts say that air-source heat pumps are not as efficient as ground-source heat pumps, they actually outperform them when air temperatures are higher than temperatures 1m below the ground.


Because climates in Oxfordshire, Buckinghamshire, Berkshire and Surrey are lower during the winter, ground-source heat pumps are considered a more efficient choice for the UK. Even so, air-source heat pumps are an excellent choice for other purposes, such as heating swimming pools, and provide a CoP of 3:1 in the winter and 5:1 in the summer.


Air-source heat pump servicing and air-source heat pump repairs tend to be more affordable, however, and this should always be considered before choosing one type of installation or the other. We remind you that some air-source heat pumps are not optimised for use in the UK but those in the Mitsubishi Ecodan range are more than up to the job.



Air-source heat pumps should be fitted close to the plant room, should there be one, in a spot with optimal airflow and away from trees or areas with falling debris. There are minimum clearances our heat pump installers have to adhere to. This reduces the risk of low airflow or the chances of heat pumps recycling cold exhaust air.



A single-phase electrical supply is normally sufficient but there may be times when a three-phase electrical supply is needed at your Oxfordshire, Buckinghamshire, Berkshire or Surrey property, and the supply must run from the proposed location directly to one of our air-source heat pumps after the initial installation.



Air-source heat pumps require a base with a soakaway. Steve Cross Heat Pumps can integrate bases and soakaways into your quotation.



Like all installations, air-source heat pumps remain efficient through regular maintenance. Our company specialises in heat pump servicing, and we offer a complete aftersales service which optimises CoP, heating ability and water temperatures.



Steve Cross also covers Oxfordshire, Buckinghamshire, Berkshire and Surrey with air-source heat pump repairs. We are accredited Mitsubishi Ecodan installers so it’s fair to say we know everything about the heat pumps we install. Our technicians carry fast-moving spare parts at all times and have fast access to all non-stock components.

To discuss heat pump installation, heat pump servicing and heat pump repairs, call 01865 841911. We cover Oxfordshire, Buckinghamshire, Berkshire and Surrey.