Air Source Heat Pump Servicing and Maintenance

Air source heat pumps perform differently to a standard boiler or heating system. As such, these unique solutions for temperature control don’t require as much maintenance as traditional systems.

An air source heat pump absorbs heat from the air outside in a way similar to a refrigerator extracting heat from inside a space. The heat from the air moves at low temperatures into a fluid (refrigerant), which then moves through a compressor – a component that increases the temperature. The energy created from the heat transfer can be used to power radiators, warm air convectors, underfloor heating, and general hot water supply for residential and commercial properties.

Unlike with traditional boilers, air source heat pump servicing is not regularly required, although you might find that during the colder months you need to keep your system running continuously to keep your property heated efficiently.

Avoiding Air Source Heat Pump Problems

Most heat pump systems come with a warranty of between two and three years, though different manufacturers will offer different levels of care. Workmanship warranties for the installation of heat pumps can last for up to ten years – through such solutions as QANW, or “Quality Assured National Warranties”.

Most manufacturers will offer opportunities for warranty extensions for air source heat pump owners who are willing to pay a fee. However, in most situations, you can expect these systems for operate for at least 20 years or more – though they do require some scheduled maintenance from time to time. Air source heat pump servicing can improve the longevity and durability of your system.

What Does Air Pump Heat Source Servicing Entail?

Most heat pumps will be able to operate efficiently with only yearly checks by the owner, and regular checks from a professional installer every 3 to 5 years.
During a heat pump service, you should expect:

  • A check of the expansion vessel pressure and any necessary top-ups;
  • A check and clean of the heat pump circuit filter;
  • A check of the valves for movement freedom;
  • A check to ensure that the water stops and both valves reset properly;
  • Opening the primary system safety valve and checking that it discharges securely;
  • Checking whether it’s necessary to top up the concentration of the system refrigerant;
  • Checking the primary system pressure doesn’t rise above a recommended value;
  • Releasing any air from the primary heating system;
  • Checking and correcting the fuse fitted on the electrical supply;
  • A check for the correct temperature setting and operation of thermostats;
  • Checking the operation of motorised valves;
  • Checking yield performance

All services should also come with an annual service certificate.

After the Heat Pump is Installed

Following the installation of an air source heat pump, the installer should leave written details regarding any maintenance checks that should be carried out to ensure optimum functionality. Most experts recommend carrying out yearly checks to ensure that the evaporator and air inlet grill remain free from debris. Additionally, plants that have begun to grow around the heat pump will need to be removed.

Other tips to follow include:

  • Using anti-freeze in winter to make sure that the liquid does not freeze;
  • Remembering to learn how you can use your thermostat efficiently;
  • Remembering to frequently check the pressure gauge for the central heating in your house. An installation expert will be able to show you how to do this.

Why Don’t Air Source Heat Pumps Require Much Maintenance?

Air Source Heat Pumps are designed to last for a long time. Instead of corrosive and dangerous materials that are used to support combustion-based energy, such as coal and oil, they only use air – which is far less disruptive.

The simple, yet effective nature of air source heat pumps means that maintenance frequency is reduced, and servicing can be limited to every few years.