Heat Pump Maintenance Costs
What it actually costs to maintain a heat pump, and how to keep those costs down.
Heat pumps are becoming an increasingly common choice for UK homeowners looking to reduce their reliance on gas. But before you commit, it’s worth understanding the ongoing costs, not just the installation price. Here’s a clear look at what maintenance involves and what to budget for.
At a glance
- Annual heat pump maintenance typically costs between £150 and £300.
- Air source heat pumps are generally cheaper to service than ground source systems.
- Regular servicing extends the lifespan of the system and keeps it running efficiently.
- Skipping maintenance can lead to reduced efficiency, breakdowns, and higher costs down the line.
- The Boiler Upgrade Scheme offers grants for eligible standalone heat pump installations.
What is a heat pump?
A heat pump extracts heat from one source, such as the outside air, the ground, or a water source, and transfers it into your home for heating and hot water. In summer, many models can also run in reverse to cool the home.
Unlike a gas boiler, which burns fuel to generate heat, a heat pump uses electricity to move heat rather than create it. This makes it significantly more energy-efficient. For every unit of electricity used, a heat pump can typically deliver two to four units of heat in return.
There are two main types:
| Type | How it works | Typical installation cost |
|---|---|---|
| Air source heat pump | Extracts heat from outdoor air | £7,000 to £13,000 |
| Ground source heat pump | Extracts heat from the ground via buried pipes | £10,000 to £20,000 |
For a broader look at how heat pumps fit into the wider home heating picture, our guide on hybrid heat pumps covers the option of pairing a heat pump with an existing gas boiler.
How much do heat pumps cost to maintain?
Annual maintenance costs for a heat pump typically range from £150 to £300, depending on the type of system, its age, and the provider carrying out the service. Air source heat pumps are generally cheaper to service than ground source systems, largely because the components are more accessible.
| Type | Typical annual maintenance cost |
|---|---|
| Air source heat pump | £150 to £200 |
| Ground source heat pump | £200 to £300 |
These figures cover a standard annual service. Any additional repairs or part replacements would be charged on top.
What does maintenance involve?
A typical annual heat pump service includes:
- Cleaning air filters to maintain airflow and efficiency.
- Checking refrigerant levels to avoid performance issues.
- Inspecting fans, coils, and pipework for wear or damage.
- Testing the thermostat and controls for accuracy.
- Checking for leaks or blockages in the system.
- Verifying that the system is operating at its expected efficiency levels.
Most manufacturers recommend an annual service, though high-usage systems or older units may benefit from more frequent checks.
For example:
A homeowner skips their annual service for two years to save money. The air filters become clogged, the system works harder to compensate, electricity consumption rises, and eventually a coil fails. The repair cost is several hundred pounds, far more than two years of servicing would have cost.
Are there long-term savings?
The upfront installation cost of a heat pump is significant, typically between £7,000 and £20,000 depending on the type. Running costs, however, are generally lower than gas or oil heating, and a well-maintained system delivers better efficiency over time.
Most households can expect to break even on the investment within seven to twelve years, though this depends on factors like electricity tariffs, usage patterns, and the energy efficiency of the home. Properties that are well insulated tend to see better returns, as the heat pump doesn’t have to work as hard.
The government’s Boiler Upgrade Scheme currently offers a £7,500 grant for eligible standalone air source and ground source heat pump installations in England and Wales. Check the GOV.UK Boiler Upgrade Scheme page for the latest eligibility criteria.
It’s also worth noting that many standard home insurance policies, particularly home emergency cover, exclude heat pumps. Check your policy before installation to avoid any gaps in cover.
How to keep maintenance costs down?
Keeping your heat pump in good shape doesn’t have to mean high costs. A few straightforward habits make a real difference:
- Book an annual service and stick to it. Preventative maintenance is almost always cheaper than reactive repairs.
- Keep the outdoor unit clear. Remove leaves, debris, and any obstructions from around air source units to maintain airflow.
- Clean filters yourself between services. This is usually a simple task covered in the manufacturer’s manual and helps maintain efficiency.
- Consider a maintenance package. Some installers and service providers offer annual packages at a fixed cost, which can provide better value and priority callouts if something goes wrong.
- Check your home insurance. Make sure your policy covers the heat pump in the event of sudden damage or breakdown. With Lemonade’s home insurance, cover is transparent and easy to check.
Before we go
Heat pumps are a practical and increasingly affordable route to lower-carbon home heating. The ongoing maintenance costs are modest compared to the long-term running cost savings, but only if the system is properly looked after. Budget £150 to £300 per year for servicing, keep up with the basics between visits, and make sure your insurance reflects the technology you’ve installed.
Heat pump maintenance FAQs
Do heat pumps require a lot of maintenance?
Not particularly. An annual service from a qualified engineer is typically sufficient to keep a heat pump running efficiently. Between services, basic tasks like clearing debris from outdoor units and cleaning filters can be done by the homeowner. The maintenance burden is generally lighter than with a gas boiler.
How much does a heat pump service cost in the UK?
Annual servicing typically costs between £150 and £300, depending on the type of system. Air source heat pumps are generally at the lower end of this range, while ground source systems tend to cost more due to the complexity of the installation.
What happens if I skip heat pump maintenance?
Efficiency drops, running costs increase, and the risk of a breakdown rises. Neglected heat pumps can fail prematurely, and repair costs often significantly exceed what regular servicing would have cost. Most manufacturers also require evidence of regular servicing to honour any warranty.
Can I service my heat pump myself?
You can carry out basic maintenance tasks, such as cleaning filters and keeping the outdoor unit clear of debris. However, technical servicing, including checking refrigerant levels and inspecting electrical components, must be carried out by a qualified engineer. Attempting these yourself could invalidate your warranty or cause damage.
Are there government grants for heat pumps?
Yes. The Boiler Upgrade Scheme offers a £7,500 grant for eligible standalone air source and ground source heat pump installations in England and Wales. Hybrid systems are currently excluded.
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