An air to air heat pump system uses outdoor air to heat air within the home and can also be used for cooling and health benefits.
How do air to air heat pumps work?
Air to air heat pumps are made up of two units. One of these units is sited outside to draw air into the home, while the other is installed inside the home to distribute the heat.
As with all heat pumps, the energy (heat) is absorbed by a refrigerant within the unit. This liquid is then heated into hot air by the indoor unit which is blown out into the property. As the heat leaves the refrigerant the liquid cools. This liquid can then be circulated back to the first (outdoor) unit where the process will reset.
In order to provide cooling on hot days, this system can be run in reverse.
An air source heat pump system typically ranges from two to three CoP.
The benefits of air to air heat pumps
Air to air heat pumps work to provide heat, even when outdoor temperatures drop below minus 15° C.
A system can be used for the heating and cooling of properties.
It also enables air to be purified. This is particularly advantageous if you suffer from allergies.
Furthermore, these systems are easy to install, maintain and operate.
The negatives of air to air heat pumps
This pump cannot be used to heat water for instant hot water or wet central heating systems. If you are looking for a heat pump to achieve these operations then look to air to water heat pumps, exhaust air heat pumps or ground source heat pumps.
In terms of installation the outdoor unit needs to be fitted to a wall or placed on the ground. It is recommended that you choose a sunny wall. The unit will need adequate space around it to get a good flow of air.
When considering a heat pump it is also vital to ensure that your home is well insulated to ensure maximum efficiency.
Air-to-air heat pumps are not eligible for the Renewable Heat Incentive.