How Much Does an Air Source Heat Pump Service Cost in the UK?

A one-off air source heat pump service in the UK typically costs between £150 and £300. At Renewable Helpline, a one-off ASHP service is £250, or £270 if we're servicing your hot water cylinder too. But here's the part worth knowing: a maintenance plan starts at just £15 a month (£180 a year) - which is actually less than a single one-off visit. Here's the full breakdown.

How much does an air source heat pump service cost? The short answer

Across the UK, expect to pay £150–£300 for a standalone annual service, carried out by a qualified, F-Gas certified engineer. Our own one-off prices are £250 for an air source heat pump service, or £270 including your hot water cylinder — reflecting a genuinely thorough visit. A proper service takes one to two hours, because it's a full technical check of the refrigerant circuit, the water side, the electrics and the controls — not a quick look at the outdoor unit.

That's the headline figure. What most homeowners don't realise is that paying for a one-off service every year is often the most expensive way to keep a heat pump maintained.

What affects the cost of a heat pump service?

A few things move the price within (and occasionally above) that £150–£300 range:

• Where you live. Labour rates vary across the UK, so the same service can cost more in some regions than others.

• Your system. A larger or more complex installation, or one with a hot water cylinder, takes longer to check.

• What it needs on the day. If your glycol/antifreeze needs topping up or filters need replacing, that can add a little.

• One-off vs plan. A standalone call-out is priced as a full visit every time. A maintenance plan spreads the same work into a small monthly payment — often at better overall value.

• Whether repairs are needed. A service is an inspection and clean — it doesn't include repairs. Those are billed separately (more on that below).

One-off service vs a monthly plan — the real cost comparison

This is where the money is. Compare paying ad-hoc each year against a maintenance plan:

Paying one-off, every year:

• £250 per service (or £270 with your hot water cylinder) — the full amount, up front, every single year

• You have to remember to book it (and many people don't)

• No support between visits — if something goes wrong, you're on your own

• Any repairs are billed on top

On a Renewable Helpline plan (from £15/month):

• The cost is spread into a small, predictable monthly payment

• Your annual service is booked and done for you — automatically

• Specialist phone support is included when you need it

• On our labour-inclusive plan, the labour to put faults right is covered too

Look at the numbers. Our Essential Care plan is from £15/month — £180 a year — which is less than a single one-off service (£250), and it's handled for you with support included. Our Complete Care plan (£18/month, £216 a year) covers your hot water cylinder too — again, less than the £270 you'd pay for a one-off ASHP-plus-cylinder service. And our Priority Care plan (£30/month, £360 a year) includes labour — where the value really shows, because repair labour is expensive.

The cost of things going wrong (and why cover matters)

Servicing is cheap. Repairs are not. Across the UK, heat pump repairs average around £500, ranging from roughly £150 for a minor fix to as much as £2,000 for a compressor replacement. A single call-out for labour can cost more than a whole year on a plan.

That's the maths behind a labour-inclusive plan: if anything needs fixing during the year, the labour is already covered, and you've sidestepped a bill that could dwarf the cost of the plan. (To be clear and fair: our plans are service and maintenance agreements, not insurance — the labour to carry out repairs is included on Priority Care, while replacement parts are always separate.)

The most expensive option of all: skipping the service

There's one thing that costs far more than any service — not servicing at all. Leave a heat pump unmaintained and you face:

• Higher energy bills. A poorly maintained heat pump can use significantly more electricity — by as much as a quarter, according to manufacturer Viessmann — so a skipped service quietly costs you more than the service would have.

• A voided warranty. Most manufacturers require documented annual servicing. Miss it and a future claim — potentially thousands of pounds — can be refused.

• Avoidable breakdowns. Small, cheap-to-fix issues become large, expensive ones.

Set against those risks, the annual service looks like one of the best-value things you can do for your home.

So — is a plan cheaper than paying ad-hoc?

Honestly? Yes — and not by a little. A year on Essential Care (£180) already costs less than a single one-off service (£250), before you count anything else. Then add the booking being handled for you, specialist support, labour cover on the higher tier, and the breakdowns and warranty problems you avoid, and a maintenance plan works out cheaper and far less stressful over the life of your heat pump.

Renewable Helpline plans — and what they cost

Renewable Helpline is a specialist air source heat pump maintenance service. Our plans are service and maintenance agreements (not insurance) that spread the cost and take the whole job off your hands:

• Essential Care — from £15/month: your full annual service, handled by specialists, plus support when you need it.

• Complete Care — £18/month (most popular): everything in Essential Care, with your hot water cylinder covered too.

• Priority Care — £30/month: our most comprehensive plan, with labour included.

All plans are for mainland UK private domestic properties, with a 12-month minimum term.

Want your servicing sorted for less hassle — and less risk? Call 0800 135 7663 or email hello@renewablehelpline.co.uk.

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