Air Source Heat Pumps
How does an Air Source Heat Pump Work?
An air source heat pump extracts heat from the outside air in the same way that a fridge extracts heat from its inside. It can get heat from the air even when the temperature is as low as -15° C.
Collecting the heat
The air source pump uses a fan to push air over a heat exchanger (this is basically just a copper coil filled with refrigerant) and the exchanger extracts the heat energy from the air.
An evaporator within the air source heat pump then takes the heat obtained by the heat exchanger and boils the refrigerant (which boils at approximately -10˚C). The act of boiling turns the refrigerant into a vapour which is then transferred to the compressor.
The vapour is then compressed in volume by the internal compressor and as its volume reduces, its temperature increases to levels between 75˚C and 125˚C. This heated vapour is then fed through a heat exchanger within the heating pump.
Transferring the Heat
Forcing the hot gas across the cold water from the central heating system condenses the refrigerant back into a liquid. As it condenses its heat is passed into the heat exchanger which supplies the domestic hot water and powers the central heating system using the air source heat extracted originally.
Benefits of Air Source Heat Pumps
- Lower fuel bills, especially if you are replacing conventional oil fired or solid fuel heating systems
- Lower home carbon emissions, depending on which fuel you are replacing
- No solid fuel deliveries needed
- Air source heat pumps can heat your home as well as your water
- Minimal maintenance and running costs required
- Can be easier to install than a ground source heat pump
- Very low running noise
- Environmentally friendly
- Constant hot water - Air source heat pumps provide constant hot water and a pretty constant central heating temperature all year round regardless of weather conditions
*It's worth noting that to get maximum value from your heat pump, it pays to make your home as well insulated as possible. Poorly insulated homes will not achieve the highest COP levels. COP levels will also depend on the emitter system (radiators, underfloor heating, etc) that's installed in your home.
- Contact us by telephone or using our contact form explaining the details of your project
- We meet you on site or you can send over drawings/plans
- We will outline the options available and provide a free no obligation quotation
- If you are happy to proceed we will set out an estimated time-frame and get to work installing your new geothermal heat pump!