Do Heat Pumps Need Servicing? Must-Know Tips to Save Money in the UK

Do Heat Pumps Need Servicing? Must-Know Tips to Save Money in the UK

Heat pumps are the eco-friendly superheroes of home heating, swooping in to save the day with toasty rooms and slashed carbon footprints. With the Boiler Upgrade Scheme tossing cash at UK homeowners like confetti at a wedding, it’s no wonder these green machines are stealing the show.

But hold your horses - let’s torch a myth brighter than a dodgy bonfire: heat pumps are not magical, maintenance-free unicorns you can plonk in your garden and forget about. Nope, they’re more like a prized classic car - brilliant, but they need a bit of love to keep purring.

If you’ve got a heat pump or you’re eyeing one up, you’re probably scratching your head, wondering: Do heat pumps need servicing?

Short answer: yes, they absolutely do.

This guide strips away the noise and gives you the facts, from efficiency and safety to lifespan and warranty protection, plus practical tips to keep your heat pump in peak condition.

Let’s get into it…

Ready to make your home more energy-efficient and cut down on your heating bills? Get a heat pump quote today from our trusted partners at Heat Geek here.

Key Takeaways:

  • Heat pumps require annual servicing to ensure safety, efficiency, and warranty validity.

  • Servicing prevents breakdowns, boosts performance, and extends your heat pump’s life to 15-20 years.

  • Skipping servicing risks higher energy bills and a voided warranty.

  • Professional servicing is essential; DIY checks are helpful but not a substitute.

  • Book a service with an MCS-certified engineer.

Busting the “Maintenance-Free” Myth

Let’s tackle the biggest misconception head-on: heat pumps are not maintenance-free.

Some homeowners assume that, because they lack the combustion risks of gas boilers, heat pumps can run forever without a check-up.

Wrong. Like any complex system, they need regular care to perform at their best. The Energy Saving Trust states that annual servicing is critical for efficiency, safety, and longevity.

“Some folks think heat pumps are magical boxes that never need attention. That’s like expecting your car to run forever without an MOT. Skip servicing, and you’re risking costly repairs, higher bills, and a voided warranty.” - Patrick Garner, Installation Manager at Heatable.

How Heat Pump Servicing Compares to Boiler Servicing

If you’re switching from a gas boiler to a heat pump, you might wonder how servicing stacks up. Both systems require annual check-ups to stay safe and efficient, but the reasons differ slightly.

Gas boilers need servicing to prevent dangerous carbon monoxide leaks and ensure combustion efficiency, as mandated by the government's gas safety regulations.

Heat pumps, being electric, avoid combustion risks but rely on complex components like refrigerants, compressors, and electrical systems that need regular attention.

The key difference? Heat pump warranties (often 5-7 years, sometimes up to 10 with brands like Daikin or Mitsubishi) typically require proof of annual servicing by a qualified engineer.

Miss a service, and you could void your warranty, leaving you to cover repair costs.

For more on choosing the right heat pump, explore our comprehensive heat pump guide here.

More heat pump guides: 

Why Servicing Your Heat Pump is Essential

Servicing isn’t just a chore; it’s a smart investment in your home’s comfort and your wallet. Here’s why it’s a must:

1. Prioritising Safety

While heat pumps don’t produce carbon monoxide, they’re not risk-free. Faulty electrical components, refrigerant leaks, or poor installation can create hazards.

A qualified engineer, certified by the Microgeneration Certification Scheme (MCS), will check for issues like loose wiring, refrigerant leaks, or corrosion, ensuring your system is safe for your household.

2. Boosting Efficiency, Cutting Bills

A well-maintained heat pump can achieve a Coefficient of Performance (COP) of 3-4, delivering 3-4 units of heat for every unit of electricity. Neglect servicing, and efficiency can plummet, driving up energy bills.

The Energy Saving Trust estimates that regular maintenance can save 10-15% on running costs, potentially hundreds of pounds annually for the average UK home.

3. Extending Your Heat Pump’s Lifespan

With proper care, heat pumps can last 15-20 years, outlasting gas boilers (typically 10-12 years).

Annual servicing catches minor issues, like clogged filters or worn components, before they become major, expensive problems. Think of it as preventative care for your heating system.

4. Safeguarding Your Warranty

Most heat pump manufacturers require annual servicing to keep warranties valid.

Without documented proof from a TrustMark-accredited engineer, you could be left paying for repairs out of pocket. Keep those service records safe to avoid headaches later.

What’s Involved in a Heat Pump Service?

A professional heat pump service is thorough but straightforward. Here’s what an MCS-certified engineer will typically do, based on MCS guidelines:

  • Inspect refrigerant levels to ensure optimal performance and detect environmentally harmful leaks.

  • Clean or replace air filters to maintain airflow and prevent strain on the system.

  • Check electrical components, including wiring and connections, for wear or faults.

  • Test system performance, such as heat output, COP, and thermostat response.

  • Examine pipework and insulation for leaks, corrosion, or damage.

  • Clean the outdoor unit to remove debris like leaves or dirt that could block airflow.

  • Calibrate controls to ensure the system operates smoothly and efficiently.

  • A service usually takes 1-2 hours and costs £100-£200, depending on your location and provider.

Signs Your Heat Pump Needs Urgent Attention

Annual servicing is standard, but sometimes your heat pump will signal it needs a check-up sooner. Watch for these red flags:

  • Reduced heat output or longer heating times indicate efficiency issues.

  • Unusual noises like grinding, rattling, or hissing suggest mechanical problems.

  • Spiking energy bills without a change in usage point to poor performance.

  • Frost or ice build-up on the outdoor unit, especially in winter.

  • Error codes or warning lights on the control panel.

If you spot any of these, act fast. Contact a professional to prevent small issues from snowballing.

DIY Maintenance: What’s Safe and What’s Not

Can you maintain your heat pump yourself? To a point, yes - but don’t get carried away.

Here are some DIY tasks you can safely handle between professional services:

  • Clear debris around the outdoor unit (leaves, twigs, or snow) to ensure proper airflow.

  • Check air filters monthly and clean them as per your manufacturer’s instructions (usually a rinse or vacuum).

  • Inspect vents to ensure they’re not blocked by furniture or curtains.

  • Monitor performance by noting any changes in heating consistency or unusual noises.

However, leave technical tasks like refrigerant checks, electrical inspections, or system diagnostics to professionals.

DIY attempts at these can damage your heat pump, void your warranty, or even be dangerous. Stick to simple upkeep and book an annual service with a qualified engineer.

How Often Should You Service Your Heat Pump?

Annual servicing is the rule, ideally in autumn before the heating season kicks in.

Some high-use systems, like those in larger homes or colder regions, may benefit from biannual checks - consult your manual or installer.

The Energy Saving Trust and UK Government both recommend regular servicing to keep your system efficient and reliable.

Top Tips for Heat Pump Servicing:

  • Schedule an annual service with an MCS-certified engineer.

  • Book in autumn to prep for winter heating demands.

  • Keep detailed records of all services for warranty claims.

  • Clear debris around your outdoor unit monthly.

  • Monitor energy bills for unexpected spikes.

Additional Benefits of Regular Servicing

Beyond the core reasons, servicing your heat pump offers extra perks that make it a no-brainer:

  • Environmental Impact - A well-maintained heat pump runs efficiently, reducing electricity use and your carbon footprint, aligning with the UK’s net-zero goals.

  • Improved Comfort - Regular servicing ensures consistent heating and hot water, avoiding those chilly mornings when your system struggles.

  • Peace of Mind - Knowing your heat pump is in top shape lets you focus on enjoying your home, not worrying about breakdowns.

Next Steps For Your Heat Pump Journey:

When planning to install a heat pump for your home, there are several important factors to consider. Make sure to refer to the following guides to help you make informed decisions:

To dive deeper into these topics, head over to our advice section or check out our YouTube channel to learn more.

Get A Quote From Us Today 

Without boasting, get your new heat pump quote and buy from us, here’s why: 

  • Gas Safe installation within 24 hours.

  • Thousands of satisfied customers with an average score of 4.9 on Trustpilot, surpassing the market leader.

  • Which? Trusted Trader: Heatable is proudly recognised as a Which? Trusted Trader.

  • Flexible payment options, including interest-free finance.

  • Up to 12-year guarantee on selected heat pumps.

  • Fixed price guarantee: No hidden costs.

  • Save your quote and decide later.

  • Get an instant fixed price on a heat pump, here.

Heat Happy.

FAQ's

Typically £100-£200, depending on your location and provider. Get a quote from Heatable for clarity.

Bad idea. Skipping servicing risks higher bills, breakdowns, and a voided warranty. The Energy Saving Trust says regular maintenance saves more in the long run.

With annual servicing, air source heat pumps can last 15-20 years, and ground source models may reach 20-25 years, per the Energy Saving Trust.

The process is similar, but ground source systems may include checks on ground loops or boreholes. Always use an MCS-certified engineer.

Basic tasks like clearing debris or cleaning filters are fine, but professional servicing is required for technical checks. DIY attempts risk damage or warranty issues.

You could face reduced efficiency, higher bills, unexpected breakdowns, and a voided warranty. Regular servicing prevents these problems.

Look for MCS-certified or TrustMark-accredited engineers.

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Last updated 23 May, 2025

Patrick Garner
Written by Patrick Garner

Patrick Garner, a Gas Safe certified engineer, leads the boiler installations team at Heatable. A wealth of experience, he has successfully overseen the installation of thousands of heating systems.

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