Things to think before installing air source heat pump

It’s worth considering a few things to fully understand the implications of installing an air source heat pump:

Size: The higher your heat demand, the larger the heat pump.

Insulation:  Insulation and draught proofing can reduce your heat demand, as well as improving the comfort of your home. Financial help is available to insulate your home.

Placement: The heat pump needs plenty of space to allow for good airflow and is usually fitted on the ground or an outside wall. Check with your local authority if you require planning permission.

Inside the home: Inside, you’ll need room for a compressor and controls, plus a hot water cylinder that is usually smaller than a standard gas boiler. Underfloor heating and larger radiators work best. Installers can provide you with advice on this.

Noise: Typically quiet, a heat pump will emit some noise similar to an air conditioning unit.

Usability: Heat pumps work most efficiently delivering low-temperature water. Therefore, a heat pump system should be run for extended periods with larger radiators (or underfloor heating) to reach your desired thermostat temperature.

Planning permission: Many systems will be classed as a ‘permitted development.’ Always check with your local authority if you need planning permission, although it is not a likely requirement.

Heating water: Heating water can limit the system’s overall efficiency. Solar water heating or an electric immersion heater can help with the hot water supply. It’s best to talk to your installer about your needs because every home will have different hot water usage requirements.

Maintenance: Air source heat pumps require very little maintenance. Check annually that the air inlet grill and evaporator are debris-free and you should remove any plants growing near the heat pump. Your installer may advise checking the central heating pressure gauge in your home from time to time. You can ask them to list all the maintenance requirements. We’d also recommend a professional services the heat pump every two to three years.