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An air source heat pump service in the UK typically costs £150 to £300 depending on the engineer and what's included. Most manufacturers recommend an annual service to keep the system running efficiently and to maintain your warranty. OVO offers servicing through its local installer network.
Heat pumps are low maintenance compared to gas boilers. There are no annual gas safety checks required and no combustion components to worry about. But they do benefit from a regular service to make sure everything is running as it should and to catch any issues early.
This guide covers what a heat pump service involves, how much it costs, and how often it needs to be done.
How much does it cost to service a heat pump in the UK?
Air source heat pump service costs typically range from £150 to £300 for a standard annual visit. The price varies depending on the engineer, the size and complexity of your system, and what is included in the service.
| Service type | Typical cost | What's usually included |
|---|---|---|
| Basic annual service | £150 to £200 | Visual inspection, filter clean, pressure and refrigerant check |
| Full annual service | £200 to £300 | All of the above plus electrical checks, flow temperature test, performance report |
| Service contract (annual) | £100 to £200 per year | Annual service included, sometimes with priority call out |
Costs correct as of May 2026. Prices vary by region and installer.
Some manufacturers include servicing as part of an extended warranty package. It’s worth checking your warranty terms before booking a service separately.
How often should a heat pump be serviced?
Most heat pump manufacturers recommend an annual service. This keeps the system running efficiently, maintains your warranty, and gives an engineer the chance to spot any minor issues before they become bigger ones.
In addition to the annual service, there are a few things you can check yourself throughout the year.
• Check the outdoor unit is clear of leaves, debris, and vegetation. Keep at least 30cm of clear space around it.
• Check the filters on the indoor unit every three to six months and clean them if dusty.
• Check the pressure gauge on your system is within the normal range, typically between 1 and 3 bar. Your installer will show you what to look for during handover.
• Listen for any unusual noises and report them to your installer promptly.
What does a heat pump service involve?
A professional heat pump service covers both the outdoor unit and the indoor components. Here is what a thorough annual service should include.
| What's checked: | Why it matters: |
|---|---|
| Refrigerant pressure and levels | Low refrigerant reduces efficiency and can damage the compressor |
| Electrical connections and controls | Loose connections can cause faults or safety issues |
| Flow temperature and system pressure | Confirms the system is running at the right settings for your home |
| Filter inspection and clean | Blocked filters reduce airflow and make the system work harder |
| Outdoor unit coil and fan | Dirt on the coil reduces heat exchange efficiency |
| Defrost cycle check | Confirms the system is defrosting correctly in cold weather |
| Overall system performance | Checks the COP is in line with what the system should be achieving |
The engineer will also check whether any settings need adjusting for the time of year, as some systems benefit from seasonal tweaks to flow temperature.
Does a heat pump need an annual gas safety check?
No. Heat pumps run on electricity, not gas, so there’s no Gas Safe engineer requirement and no annual gas safety certificate needed. This is one of the advantages of switching from a gas boiler.
Refrigerant work, however, must only be carried out by an F Gas certified engineer. If your service includes checking or topping up refrigerant, make sure the engineer holds a valid F Gas certificate.
What happens if you don’t service your heat pump?
Skipping a service will not immediately cause your heat pump to break down. But over time, a lack of maintenance can lead to reduced efficiency, higher running costs, and components wearing out sooner than they should.
More importantly, most manufacturers require evidence of annual servicing to honour their warranty. If a fault develops and you cannot show that the system has been regularly maintained, your warranty claim may be refused.
Does OVO service heat pumps?
Yes. OVO offers heat pump servicing through its local installer network. Your local OVO franchisee can carry out annual services on systems installed by OVO and, in many cases, on systems installed by other engineers.
Contact your local OVO team to book a service or to ask about an annual service plan.
Frequently asked questions
How long does a heat pump service take?
A standard annual service typically takes one to two hours. A more comprehensive service or one that includes a full system report may take slightly longer.
Can I service my heat pump myself?
You can carry out basic maintenance yourself, such as cleaning filters and clearing debris from the outdoor unit. But the technical elements of a service, including refrigerant checks and electrical inspections, must be carried out by a qualified engineer. Attempting refrigerant work without an F Gas certificate is illegal.
Will my heat pump warranty be affected if I miss a service?
Possibly. Most manufacturer warranties require evidence of annual servicing to remain valid. Check your warranty terms to confirm what is required and how often.
What is the difference between a service and a repair?
A service is a planned, routine inspection to keep the system running well. A repair is carried out when something has gone wrong. Regular servicing reduces the likelihood of needing repairs by catching issues early.
How do I know if my heat pump needs a service sooner than planned?
Signs that your heat pump may need attention include unusual noises, a drop in heating performance, higher than expected running costs, or the system showing a fault code on the display. Contact your installer if you notice any of these.
Book a heat pump service with OVO
OVO's local engineers carry out annual heat pump services across the UK. To book a service or find out about a service plan, get in touch with your local OVO team.