Heat Pump Servicing

Stay comfortable all year round with expert air source heat pump servicing from our MCS-accredited engineers.

Heat pump servicing

Maintain Efficiency

Regular servicing keeps your heat pump performing at its best, ensuring it continues to work efficiently all year round.

Extend System Lifespan

Catching small issues early prevents costly breakdowns and helps your heat pump reach its full lifespan of 20+ years.

Protect Your Warranty

Most manufacturers require annual servicing to keep your warranty valid. Miss it and you risk losing cover when you need it most.

What does heat pump servicing involve?

Your air source heat pump service typically covers a thorough inspection of the outdoor unit including cleaning, checking for debris, and inspecting the fan, alongside refrigerant levels, pipework, and electrical connections.

Our engineers will also check internal components such as the expansion vessel, buffer tank, filters, and pumps, before running the system through its operating modes to verify temperatures and overall performance.

All findings are recorded and a full heat pump service report provided, this is important for maintaining your manufacturer warranty and keeping your system compliant.

An engineer servicing a heat pump
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MCS Certified Installer

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air source heat pump engineer

We service all heat pumps, not just ones we've installed

Book your annual service with PHS today

Flexible payment — your choice

We offer two straightforward ways to stay covered.

Annual Service

Pay once, per year. Book a single annual service and pay £216 in full at the time. Simple, no commitment and peace of mind.

Service Plan

Spread the cost across the year with a service plan. Manageable monthly payments of £18.99 and your service covered.

Your questions answered

Common questions

If your question isn't listed, please reach out to us below.

A standard heat pump service takes around 60 to 90 minutes. It’s non-disruptive, with your engineer working on the outdoor unit and indoor components without needing to take your heating offline for any significant time.

Annual heat pump servicing is the standard recommendation across the industry, and it’s what most manufacturer warranties require. 

You don’t need to keep track yourself — as part of our aftercare, we’ll call you when your annual heat pump service is due. It’s one less thing to remember, and it keeps your manufacturer warranty protected without any extra effort on your part.

Your first heat pump service is due one year after installation, to maintain peak efficiency and keep your manufacturer warranty valid. After that, annual servicing keeps your system protected and running at its best.

Heat pump servicing costs £216 per year, or from £18.99 per month with a flexible payment plan. This includes a full annual service from an MCS-certified engineer, helping protect your manufacturer warranty and keep your system running efficiently.

Only an MCS-certified engineer, trained and qualified in air source heat pump servicing, should carry out the work. Any task involving the refrigerant circuit also legally requires F-Gas certification. Choosing a certified professional protects your manufacturer warranty and ensures the job is done safely and correctly.

No — apart from your annual service, there’s nothing else to worry about. We take care of it all, so you can enjoy reliable, efficient heating without the hassle of ongoing maintenance.

Nothing is required from you between services — we handle the technical side entirely. If you’d like to help keep things running smoothly, simply keeping the outdoor unit clear of leaves and debris is the only thing worth doing yourself.

Anytime really, as long as it’s booked annually, timing is flexible. That said, we’ll call you when your service is due, so you never need to think about scheduling it yourself.

Our heat pump servicing reviews

"Joe Gundy was the engineer who came to service my heat pump. He did an excellent job, hence 5 stars. Would recommend your company Project Heating Solutions to anyone."
Josie | July 2026
"The chap who came to service my ASHP delivered exceptional service. Not only did he carry out the full service thoroughly, he also spent time explaining how the system actually works and guided me through all the settings. His knowledge, patience, and willingness to go the extra mile were genuinely impressive. Highly recommended."
Ian | June 2026
"Had my heat pump serviced, all very good, nice man arrived on time and I actually learnt alot as he explained how it all works. Very pleased."
Melanie | March 2026

Need technical help?

Get in touch with our team today, we’re on hand ready to help.