- Air Source Heat Pumps
Air Source Heat Pumps Explained
Air Source Heat Pumps use refrigeration technology to provide heat from a condensing unit. The evaporator side of the heat pump absorbs energy from the air outside the house using it as a source of heat for a properties hot water cylinder, radiators or underfloor heating. If the right unit is installed in the property, an Air Source Heat Pump can provide all the hot water and heating a property requires for 365 days a year.
|►||They are particularly well-suited to new build properties because of their insulation requirements and their ability to intergrate well with underfloor heating.|
|►||They also work well in existing buildings that are well-insulated, but the installer must make careful checks whether the existing radiators are big enough to heat the property, and oversized radiators are usually required.|
Browse Air Source Heat Pumps:
There are three types of air source heat pumps; air-to-air, air-to-water and split systems. Air to water pumps are used for heating and hot water by taking heat from the outside air and transferring it to the heating system via a heat pump - this process uses the principles of vapour compression. The air to air heat pumps heat up the air by drawing air into the unit, warming it up and then circulating the heated air around the property via a fan.
Low temperature split systems have two units, one is located outside of the property and another inside. A refrigerant connects the two units and transfers the energy absorbed from the outside air. This allows flexibility in the installation and means the outside unit can be located up to 50m away from the inside unit.
All air source heat pumps must be adequately sized and sited away from obstacles that may obstruct air flow. If the evaporator is inadequately sized or air flow is restricted, the unit may freeze, causing it to go into defrost mode which reverses the heat pump and uses electrical energy to melt the ice. This process reduces the COP of the unit and makes it less fuel efficient. The heat pump should be located outside the house on a sunny wall with plenty of room for airflow. This will also allow the heat pump to be easily accessible for servicing.
Latent heat is present in air temperatures as low as -20 degrees so the UK climate is suitable for an Air Source Heat Pump to heat your home, even on our coldest days.
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