Heat Pump Cost UK 2026: The Complete Guide to Prices, Grants and Savings

How much does a heat pump actually cost in the UK in 2026? It is the first question almost every homeowner asks, and the answer you get depends entirely on who you ask. Manufacturer websites quote one figure, installers quote another, and the number your neighbour paid last year might bear no resemblance to either.

This guide cuts through the noise. We have compiled pricing data from MCS-certified installations, industry surveys, and real quotes gathered across England, Scotland and Wales to give you a clear, honest picture of what you will pay for a heat pump in 2026, what is included in that price, what hidden costs to watch for, and how grants and running cost savings change the long-term equation.

Whether you are considering an air source heat pump or a ground source system, whether you want to understand the BUS grant or just see how the numbers stack up against your gas boiler, this is the definitive cost reference. Our editorial team has verified every figure against the latest official data.

Air Source Heat Pump Costs by Home Size

Air source heat pumps (ASHPs) account for roughly 90% of all heat pump installations in the UK. They are cheaper to install than ground source systems, require less disruption to your garden, and suit most property types. If you are unsure whether your property is a good candidate, start with our home suitability check.

The price you pay depends primarily on your home's heat demand, which correlates closely with its size and insulation quality. A well-insulated 2-bed flat needs a much smaller unit than a draughty 4-bed detached house.

Typical ASHP Prices in 2026 (Fully Installed, Before Grant)

Home Type	Typical Heat Demand	System Size	Installed Cost (inc. VAT)
2-bed flat or terrace	6,000 - 8,000 kWh/yr	5 - 7 kW	£8,000 - £11,000
3-bed semi-detached	10,000 - 14,000 kWh/yr	8 - 10 kW	£10,000 - £14,000
3-bed detached	12,000 - 16,000 kWh/yr	10 - 12 kW	£12,000 - £16,000
4-bed detached	16,000 - 22,000 kWh/yr	12 - 16 kW	£14,000 - £19,000
5-bed detached	22,000 - 30,000 kWh/yr	16 - 20 kW	£18,000 - £24,000

These figures are based on MCS installation data and represent fully installed systems including the heat pump unit, hot water cylinder, controls, pipework modifications, and MCS certification. The median ASHP installation cost recorded by MCS in early 2026 sits at approximately £12,500 before the grant is applied.

For a detailed look at what drives pricing for the most common property type, see our guide on heat pumps for a 3-bed semi.

What Drives the Price Range?

Within each category, the spread between the low and high end reflects several factors:

Brand and model: Premium brands like Vaillant, Daikin and Mitsubishi command higher prices than budget alternatives. However, they often deliver better seasonal efficiency and longer warranties. Our best heat pump brands guide breaks down the options.
Existing system compatibility: If your current radiators, pipework and hot water cylinder are compatible, costs stay lower. If major changes are needed, expect to be at the upper end. Read more about using a heat pump with existing radiators.
Installer pricing: Labour rates vary significantly by region. A busy, well-established installer in the South East may charge 20-30% more than one in the North East.
System complexity: Properties with multiple heating zones, underfloor heating integration, or unusual layouts cost more to install.

Ground Source Heat Pump Costs

Ground source heat pumps (GSHPs) extract heat from the ground rather than the air. They deliver higher efficiency, especially in winter, because ground temperatures remain stable at around 10-12C year-round. However, the ground loop installation adds significant cost. For a head-to-head comparison of the two technologies, see our air source vs ground source guide.

GSHP Pricing: Horizontal vs Vertical

There are two main ground loop configurations, and the choice between them has a major impact on your total cost.

Horizontal ground loops require trenches dug 1.2 to 2 metres deep across a large area of garden. You need roughly 2 to 3 times the floor area of your home in available garden space. They are cheaper to install but need substantial outdoor space.

Vertical boreholes involve drilling one or more holes 60 to 200 metres deep. They require far less garden space but are significantly more expensive due to the specialist drilling equipment involved.

System Type	Typical Size	Installed Cost (inc. VAT)
GSHP with horizontal loops (3-bed)	8 - 12 kW	£18,000 - £28,000
GSHP with vertical boreholes (3-bed)	8 - 12 kW	£24,000 - £38,000
GSHP with horizontal loops (4-5 bed)	12 - 20 kW	£24,000 - £35,000
GSHP with vertical boreholes (4-5 bed)	12 - 20 kW	£30,000 - £48,000

Vertical borehole costs depend heavily on local geology. Drilling through soft clay is faster and cheaper than boring through solid rock. Your installer should commission a geological survey before quoting. According to BRE research, the ground loop itself can last 50 years or more with minimal maintenance, making it a genuine once-in-a-lifetime investment.

What Is Included in the Price?

A reputable MCS-certified installer's quote should include all of the following. If any are missing, ask why. You can verify an installer's credentials through the official MCS directory or our own find an installer page.

Standard Inclusions

Initial survey and heat loss calculation: A proper room-by-room heat loss assessment following MIS 3005 standards. This determines the correct system size. You can get a preliminary estimate with our savings calculator.
Heat pump unit: The outdoor compressor unit and any associated outdoor components.
Hot water cylinder: Most heat pumps require a larger cylinder than a combi boiler uses, typically 170 to 300 litres depending on household size.
Internal hydraulic components: Buffer tank (if needed), pipework, valves, expansion vessel, and circulation pump.
Controls and thermostat: A compatible smart thermostat and zone controls as required.
Electrical connection: Connection from the heat pump to your consumer unit, including any minor electrical upgrades.
Commissioning: Full system commissioning, testing, and handover. Our guide on installation timelines covers what to expect.
MCS certification: Registration of the installation on the MCS database. This is essential for the BUS grant.
Building regulations notification: The installer should handle Building Control notification as a competent person.

What Is NOT Usually Included

Several items frequently catch homeowners off guard because they are excluded from the headline quote. These are the hidden costs you must budget for.

Hidden Costs You Must Budget For

This is where many homeowners get an unpleasant surprise. The heat pump itself might cost £12,000, but by the time you have addressed everything your home needs, the total can be considerably higher.

Radiator Upgrades: £1,500 to £5,000

Heat pumps operate at lower flow temperatures than gas boilers, typically 35-45C rather than 60-75C. If your existing radiators are too small to heat your rooms at these lower temperatures, some or all will need upgrading to larger panels. We cover this topic in depth in our heat pumps with radiators guide.

In practice, most homes built since the 1990s have generously sized radiators and need few or no changes. Older properties with original radiators almost always need some upgrades. A full radiator replacement across a 3-bed house typically costs £2,500 to £4,500.

Insulation Improvements: £500 to £8,000+

A heat pump works most efficiently in a well-insulated home. Is your home suitable for a heat pump? That depends largely on its current insulation levels.

Key improvements to consider:

Loft insulation top-up (to 270mm): £300 - £600
Cavity wall insulation: £1,000 - £2,500
Draught proofing: £200 - £500
External wall insulation: £8,000 - £15,000 (only justified in the worst cases)

Many of these improvements are eligible for separate funding through the ECO4 scheme or the Home Upgrade Grant. The Energy Saving Trust has a useful overview of insulation measures and their typical savings.

Electrical Upgrades: £0 to £2,000

Most ASHPs below 12 kW can be connected to a standard single-phase supply. Larger systems, or homes with already heavily loaded consumer units, may need a new distribution board or a three-phase supply upgrade.

Typical costs: a new consumer unit runs £400 to £800. A three-phase supply upgrade through your DNO costs £1,000 to £2,000 and can take 8 to 12 weeks to arrange.

Planning and Permissions: £0 to £500

Most ASHPs fall under permitted development and do not need planning permission, provided they meet noise limits and placement rules. Read our planning permission guide for the full picture. GSHPs almost never need planning permission. However, listed buildings, conservation areas, and flats may require formal applications, which cost £206 in England.

The BUS Grant: £7,500 Off Your Heat Pump

The Boiler Upgrade Scheme (BUS) is the UK government's flagship heat pump grant. Since its uplift in October 2025, as detailed on GOV.UK, it provides:

£7,500 for an air source heat pump
£7,500 for a ground source heat pump
£5,000 for a biomass boiler (rural properties only)

The grant is applied directly by your MCS-certified installer, so you never need to fund the full amount upfront. You pay the net cost: the total installation price minus £7,500. For a complete walkthrough of the application process, see our step-by-step BUS guide.

Net Cost After Grant

For a typical 3-bed semi with an ASHP costing £12,000 installed, the net cost after the BUS grant is £4,500. For many smaller properties, the net cost drops below £3,000. The Energy Saving Trust BUS page provides additional detail on eligibility and what the grant covers.

The scheme is currently funded until April 2028, with a total budget of £2.7 billion. There are no income or savings tests. You simply need to own the property, have a valid EPC (no minimum rating required), and use an MCS-certified installer.

0% VAT Until March 2027

Heat pumps currently benefit from 0% VAT on supply and installation. This policy, introduced in April 2022, is confirmed to run until at least 31 March 2027. After that date, the rate may revert to the reduced 5% rate that applied before. This zero-rate applies whether or not you claim the BUS grant.

Regional Price Variations

Heat pump installation costs are not uniform across the UK. Labour rates, property types, and local market maturity all play a role.

London and the South East

Expect to pay a 15-25% premium compared to the national average. Higher labour costs, congestion charges for installers transporting equipment, and generally higher overheads all contribute. A 3-bed ASHP installation in London typically costs £13,000 to £16,000 before the grant.

Scotland

Scotland has its own additional grant programmes. The Home Energy Scotland interest-free loan of up to £7,500 can be combined with the BUS grant, potentially reducing the net cost to zero for some installations. Installation costs in Scotland's Central Belt are broadly comparable to the English Midlands. Rural Highland and Island installations carry a premium due to travel distances.

Wales

The Welsh Government's Warm Homes Nest scheme provides additional support for lower-income households. Installation costs in South Wales are similar to the South West of England. North and Mid Wales prices are slightly lower, comparable to the North of England.

Northern England and the Midlands

Generally the most competitively priced region for installations. Strong installer competition and lower labour costs mean prices sit 10-15% below the national average.

Running Costs vs Other Fuels

The upfront cost is only half the equation. The real financial case for a heat pump rests on its running costs compared to whatever fuel you are currently using. Our detailed heat pump vs gas boiler comparison covers this head-to-head.

OFGEM Q2 2026 Energy Prices (Price Cap Rates)

Based on the latest OFGEM price cap data:

Fuel	Unit Cost	Standing Charge
Electricity	24.50p/kWh	53.56p/day
Mains gas	6.76p/kWh	32.00p/day
Heating oil (kerosene)	6.50p/kWh (approx.)	N/A
LPG (bulk)	8.20p/kWh (approx.)	N/A

At first glance, electricity at 24.50p looks far more expensive than gas at 6.76p. But this is where the heat pump's efficiency transforms the equation. A heat pump with a Seasonal COP of 3.5 (we explain this metric in our COP explained guide) effectively costs:

24.50p / 3.5 = 7.0p per kWh of heat delivered

Compare that to a gas boiler at 90% efficiency:

6.76p / 0.9 = 7.5p per kWh of heat delivered

The heat pump is already marginally cheaper per unit of heat than a gas boiler, and significantly cheaper than oil or LPG. As electricity prices fall relative to gas, a long-term trend driven by renewable generation, the advantage will widen. If you are currently on oil, our guide on replacing an oil boiler with a heat pump shows why the savings are even more compelling.

20-Year Total Cost of Ownership

This is the comparison that matters most. Heat pumps cost more upfront but less to run. Over the life of the system, which option actually costs less? Our savings calculator can help you model this for your specific property.

Total Cost of Ownership: 3-Bed Semi, 12,000 kWh/yr Heat Demand

Cost Element	Gas Boiler	ASHP (with BUS)	GSHP (with BUS)
Upfront cost	£2,500	£4,500 (net)	£14,500 (net)
Annual fuel cost	£902	£840	£735
Annual maintenance	£120	£150	£120
Boiler replacement (year 12)	£2,800	£0	£0
Total over 20 years	£25,740	£24,300	£31,600

The ASHP comes out ahead over 20 years even at current energy prices, primarily because it avoids a mid-life boiler replacement. The GSHP's higher upfront cost makes it harder to justify financially for an average 3-bed, though it wins convincingly for larger properties with higher heat demands. A Nesta report on scaling heat pumps confirms that running cost parity with gas has effectively been reached for most UK properties.

If electricity prices fall relative to gas, as most forecasts predict, the heat pump advantage widens significantly.

For oil and LPG users, the financial case is even stronger. An oil boiler household spending £1,400 per year on heating would save approximately £500 annually by switching to an ASHP, paying back the net installation cost in under 5 years.

Illustrative Composite Scenario: The Hendersons

The following scenario is an illustrative composite based on typical installations we have reviewed. It does not represent a specific household.

The Hendersons live in a 1970s 3-bed semi-detached house in Nottingham. The property has cavity wall insulation, 200mm of loft insulation, and double glazing installed in 2010. Their gas boiler, a 15-year-old Worcester, is due for replacement. Annual gas bill: approximately £1,050 for heating and hot water.

After reading about the BUS grant, they request quotes from three MCS-certified installers. The quotes come in at £11,200, £12,800, and £13,500 for an 8.5 kW ASHP with a 210-litre hot water cylinder.

Their installer's heat loss survey reveals that the lounge and main bedroom radiators are undersized for a heat pump's lower flow temperatures. Upgrading four radiators adds £1,800 to the bill. The installer also recommends topping up the loft insulation to 270mm for £400.

Their final costs:

ASHP installation: £12,800
Radiator upgrades: £1,800
Loft insulation top-up: £400
Subtotal: £15,000
BUS grant: -£7,500
Net cost: £7,500
0% VAT: already included

Their predicted annual heating cost drops from £1,050 to approximately £780, saving £270 per year. Including the avoided boiler replacement they would have needed within 2-3 years (circa £2,800), the effective payback period is approximately 7 years.

The Hendersons also gain an improved EPC rating, moving from D to C, which adds an estimated £5,000 to £8,000 to their property value according to research from the Energy Saving Trust.

Their heat pump runs quietly at 42 dB, well within the permitted limits. For more on noise levels and what to expect, see our guide on heat pump noise and neighbours.

How to Get the Best Price

Get Three Quotes (Minimum)

Prices for identical specifications can vary by 30% or more between installers. Always obtain at least three quotes from MCS-certified installers. You can find accredited professionals through the official MCS find an installer tool. Compare like for like: check that each quote includes the same cylinder size, the same radiator upgrades, and the same commissioning scope.

Consider Off-Season Installation

Heat pump demand peaks from September to December, when homeowners suddenly remember their boiler is failing. Installers are busiest and prices are highest during this period. If you can plan ahead and book for spring or summer (March to July), you may find better availability, faster installation, and occasionally discounted pricing. Our installation timeline guide covers what to expect at each stage.

Bundle Insulation Work

If your home needs insulation improvements, bundle these with the heat pump installation where possible. Some installers offer package deals that reduce the combined cost. Separately, check your eligibility for ECO4 funding, which covers insulation for lower-income households at no cost.

Do Not Oversize

An oversized heat pump costs more to buy and runs less efficiently (it cycles on and off rather than running steadily). Insist on a proper room-by-room heat loss calculation before accepting a quote. If an installer quotes without surveying your home, walk away. Our home suitability check can help you understand what size system you are likely to need.

Check Warranty and Aftercare

Most premium heat pump brands offer 5 to 7 year warranties, extendable to 10 or even 12 years if installed and maintained by approved partners. Longer warranties can save significant expense over the system's lifetime. Our maintenance costs guide explains what annual servicing involves and what it costs.

Consider a Hybrid System

If your property is hard to insulate or you want to keep your gas connection as a backup, a hybrid heat pump combines both technologies. The heat pump handles the majority of heating, with the boiler kicking in only during the coldest spells. This can reduce upfront costs while still delivering significant carbon and running cost savings.

Frequently Asked Questions

How much does a heat pump cost for a 3-bed house in the UK?

A typical air source heat pump installation for a 3-bed house costs £10,000 to £14,000 before the BUS grant. After the £7,500 grant, the net cost is typically £2,500 to £6,500. Additional costs for radiator upgrades or insulation may add £1,500 to £5,000 depending on your property's current condition. Use our savings calculator for a personalised estimate.

Is a heat pump cheaper to run than a gas boiler?

At current OFGEM tariff rates (Q2 2026), a heat pump with a typical seasonal COP of 3.5 costs approximately 7.0p per kWh of heat delivered, compared to 7.5p for a 90% efficient gas boiler. The difference is modest but favours the heat pump, and the gap is expected to widen as electricity prices fall with increased renewable generation. For a full comparison, see our heat pump vs gas boiler guide.

Can I get a heat pump for free with the grant?

Not typically for a standard installation, though it is possible in some circumstances. The BUS grant covers £7,500, and some smaller ASHP installations for well-insulated 2-bed properties cost less than £10,000. Combining the BUS grant with Scotland's Home Energy Scotland loan or local authority top-up grants can reduce the net cost to near zero in some cases.

How long does a heat pump last?

Air source heat pumps typically last 20 to 25 years, with ground source systems lasting 25 to 30 years or more (the ground loop itself can last 50+ years). This compares favourably to gas boilers, which typically last 10 to 15 years. The longer lifespan is a key factor in the total cost comparison.

Is 2026 a good time to buy a heat pump?

Yes, for several reasons. The BUS grant is at its highest level ever (£7,500). VAT is at 0% until at least March 2027. Installer capacity has grown significantly, reducing wait times. And energy prices remain high enough that running cost savings are meaningful. Waiting risks the grant being reduced or oversubscribed as the 2028 deadline approaches. Which? also notes that installer availability is currently at its best since the scheme launched.

Sources

OFGEM, "Energy Price Cap Q2 2026," https://www.ofgem.gov.uk/check-if-energy-price-cap-affects-you
GOV.UK, "Boiler Upgrade Scheme: Overview," https://www.gov.uk/guidance/apply-for-the-boiler-upgrade-scheme
Energy Saving Trust, "Air Source Heat Pumps," https://energysavingtrust.org.uk/advice/air-source-heat-pumps/
Energy Saving Trust, "Boiler Upgrade Scheme," https://energysavingtrust.org.uk/grants-and-loans/boiler-upgrade-scheme/
MCS, "Installation Database," https://certificate.microgenerationcertification.org/
Nesta, "How to Scale Heat Pumps," https://www.nesta.org.uk/report/how-to-scale-heat-pumps/
BRE, "Domestic Energy Research," https://www.bregroup.com/
Which?, "Heat Pumps Reviews and Advice," https://www.which.co.uk/reviews/ground-and-air-source-heat-pumps

For further reading

Related guides:

Resources: