Air Source Heat Pumps
Air Source Heat Pumps use well established technology and are constantly being improved and they represent one of the most important sources of alternative energy for businesses and households.
An Air Source Heat Pump System will cost between £6000 – £10,000 (inclusive 5% VAT) – this price includes all installation costs With the new Renewable Heat Incentive this will provide:
- Annual savings of around 50% on heating oil or LPG
- Central heating and domestic hot water and can be used for under floor heating and radiators
What are Air Source Heat Pumps?
Heat pumps are electrically powered appliances consisting of a compressor and two carefully matched heat exchangers. They are designed to provide space heating and hot water through a new or existing water system using either radiators and/or under floor by extracting heat energy from a free, renewable source, the air.
The air can absorb and store heat from the sun making It possible to extract considerable amounts of this heat even when ambient temperatures are as low as -20°C. Air Source heat pumps are easily installed to either new build or existing properties as there is no need for any time consuming or expensive groundwork excavations as required for Ground Source Heat Pumps. All the compressor requires is an outside site close to an external wall and sufficient outside airflow.
Heat pumps are a very cost effective means of providing space heating and pre-heating domestic hot water. The high efficiency of the units means that the output heat energy can be up to four times the electrical input power, something not possible with other methods of heating.
How Does an Air Source Heat Pump Work?
Air source heat pumps use similar technology to that employed in domestic refrigerators or freezers. As outside air is passed through the evaporator coil, the ecologically friendly refrigerant, which has a boiling point of about -40°C, then evaporates converting the refrigerant into a gas like steam.
This then extracts heat from the outside air (even at temperatures as low as -20°C), which is then pumped through a compressor further increasing its temperature.
The refrigerant gas is then passed into the condensing heat exchanger and as it condenses, the heat energy in this heated gas is transferred to the heating and hot water circuit coil raising the temperature of the water.
Typically the heat that passes into the house will be 3 to 4 times the energy used by the compressor and fan, so most of the heat supplied is renewable. Therefore heat pumps are not only a cost reducing and energy saving alternative, they also reduce your carbon footprint.
Air Source Heat Pumps use well established technology and are constantly being improved and they represent one of the most important sources of alternative energy for business and households.
Ground source heat pumps (GSHPs) use pipes which are buried in the earth to extract heat from the ground.
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