How Often Should an Air Source Heat Pump Be Serviced?

A common question from homeowners is: how often should an air source heat pump be serviced?

The simple answer is that most air source heat pumps should be professionally serviced once a year. Annual maintenance helps ensure the system continues to operate efficiently, reduces the risk of unexpected breakdowns and can help extend its lifespan.

In this guide, we'll explain what's involved in servicing an air source heat pump and why regular maintenance matters.

Why Does an Air Source Heat Pump Need Servicing?

Although air source heat pumps have fewer moving parts than many traditional heating systems, they still work hard throughout the year.

Over time, components can become dirty, settings can drift and general wear and tear can affect performance.

Regular servicing helps:

• Maintain efficiency
• Reduce energy consumption
• Identify problems early
• Protect system performance
• Extend the lifespan of the equipment
• Ensure safe operation

A well-maintained heat pump can continue to provide reliable heating and hot water for many years.

Understanding how an air source heat pump works can help explain why regular servicing is so important for efficiency and performance.

How Often Should an Air Source Heat Pump Be Professionally Serviced?

Most manufacturers recommend a professional service every 12 months.

Annual servicing allows an engineer to inspect key components, check performance and ensure the system is operating as intended.

If your heat pump is still covered by a manufacturer's warranty, regular servicing may also be a requirement for maintaining warranty cover.

What Happens During a Heat Pump Service?

The exact checks may vary depending on the system, but a typical service often includes:

• Inspecting the outdoor unit
• Checking electrical connections
• Testing system controls
• Examining refrigerant components
• Cleaning filters where applicable
• Checking operating pressures
• Inspecting pipework and insulation
• Reviewing system efficiency
• Ensuring drainage systems are functioning correctly

The goal is to identify any issues before they become larger and more expensive problems.

This is especially important for systems that provide both heating and cooling, as explained in our guide on whether air source heat pumps can cool your home.

Can Homeowners Carry Out Basic Maintenance?

Yes.

There are several simple checks homeowners can perform between professional services.

These include:

Keeping the Outdoor Unit Clear

Leaves, debris and vegetation can restrict airflow around the outdoor unit.

Keeping the area clear helps maintain efficiency and performance.

Checking for Obstructions

Ensure nothing is blocking the unit's air intake or outlet.

Monitoring Performance

If your home is taking longer to heat than usual or hot water performance changes, it may be worth arranging an inspection.

Reviewing System Controls

Ensure thermostats and timers are set correctly and operating as expected.

While basic maintenance is helpful, it should not replace a professional annual service.

What Happens if a Heat Pump Isn't Serviced?

Skipping servicing doesn't necessarily mean immediate problems, but over time it can lead to:

• Reduced efficiency
• Increased energy costs
• Lower heating performance
• Component wear
• Higher repair costs
• Shortened system lifespan

Regular maintenance can often identify small issues before they become significant faults.

During winter, a poorly maintained system may struggle to perform as effectively as discussed in our article on whether air source heat pumps work in cold weather.

Does Servicing Improve Efficiency?

Yes.

A clean, well-maintained heat pump typically operates more efficiently than a neglected system.

Even small issues such as restricted airflow or incorrectly adjusted settings can affect performance.

Annual servicing helps ensure the system continues to deliver the efficiency homeowners expect.

Ongoing maintenance can help protect many of the benefits discussed in our guide on whether air source heat pumps are worth it in the UK.

Like any heating technology, ongoing maintenance plays a role in the long-term performance comparison between air source heat pumps and gas boilers.

How Long Should an Air Source Heat Pump Last?

With proper installation and regular maintenance, many air source heat pumps can provide reliable service for 15 to 20 years or more.

Factors that influence lifespan include:

• System quality
• Installation standards
• Usage patterns
• Environmental conditions
• Ongoing maintenance

Regular servicing is one of the simplest ways to maximise the life of your investment.

Are Heat Pump Service Plans Worth It?

Many homeowners choose a maintenance or service plan because it provides:

• Regular servicing reminders
• Scheduled maintenance visits
• Ongoing support
• Greater peace of mind

Whether a service plan is right for you will depend on your system, usage and personal preferences.

Signs Your Air Source Heat Pump May Need Attention

Don't wait for the annual service if you notice:

• Reduced heating performance
• Unusual noises
• Unexpected increases in energy use
• Error messages on controls
• Poor hot water performance
• Ice build-up that does not clear naturally

These issues should be assessed by a qualified professional.

So, How Often Should an Air Source Heat Pump Be Serviced?

For most homeowners, the answer is simple: once a year.

Regular servicing helps maintain efficiency, improve reliability and protect the long-term performance of your system. Combined with basic homeowner maintenance, an annual service can help ensure your heat pump continues operating effectively for many years.

Looking After Your Air Source Heat Pump

A professionally maintained system is more likely to deliver reliable performance, lower running costs and a longer lifespan.

Whether you're considering a new installation or already own a heat pump, expert support can help you get the most from your investment.

Our team provides expert support for air source heat pump installations across Devon and the South West.