How much does heat pump installation cost in the United Kingdom in 2026?
Are you considering replacing a boiler, but unsure what an air-source heat pump will cost after the survey, electrical work and radiator upgrades are included? In the United Kingdom, the final quotation depends on the home’s heat loss, system size, hot-water cylinder, controls and installation complexity. This 2026 guide explains how to compare quotes, review eligibility-based support, assess running-cost assumptions and calculate the full installed price.
Installing a heat pump in the United Kingdom involves a range of costs that vary depending on your property type, existing heating system, and the specification of the new setup. In 2026, total installed costs typically fall somewhere between £8,000 and £20,000, though this figure can shift considerably based on individual circumstances. Breaking the cost down into its component parts makes it easier to understand what you are actually paying for.
Heat-pump unit price, output and air-source system design
The heat-pump unit itself is usually the single largest cost in any installation. Air-source heat pumps, which are by far the most common type installed in UK homes, generally range from around £3,000 to £8,000 for the unit alone, depending on the brand, model, and required output. A larger property with higher heat demand will require a unit with a greater kilowatt output, which directly increases the unit price. System design also plays a role — a well-designed air-source system that matches the building’s heat load accurately will perform more efficiently and can reduce long-term running costs significantly.
Home survey, heat-loss calculation, labour, pipework and electrical work
Before any installation begins, a reputable installer will carry out a home survey and a detailed heat-loss calculation. This process determines how much heat your home loses and what output the heat pump needs to maintain comfortable temperatures. Skipping this step is a red flag when evaluating quotes. Labour costs, including the installation of pipework and the necessary electrical work, typically add between £2,000 and £5,000 to the total. Electrical upgrades may be required if your consumer unit cannot support the new system, and this can add further costs.
Hot-water cylinder, radiators, controls and insulation upgrades
Heat pumps operate at lower flow temperatures than traditional gas boilers, which means existing radiators may need to be replaced with larger ones to deliver the same level of warmth. A new hot-water cylinder is almost always required, as heat pumps heat water indirectly and at a lower temperature. Smart controls or a dedicated thermostat system add to the total. In some homes, insulation upgrades — such as loft or wall insulation — are recommended to improve the efficiency of the system. These additional components and works can add between £1,500 and £4,000 depending on the scope involved.
Boiler Upgrade Scheme and other support subject to current eligibility
The UK government has offered financial support for heat pump installations through schemes such as the Boiler Upgrade Scheme (BUS), which in recent years has provided grants of up to £7,500 for eligible air-source heat pump installations in England and Wales. Eligibility criteria apply, and the scheme’s terms, funding availability, and grant amounts are subject to change. It is important to check the current status of any scheme directly with the relevant authority before relying on it in your budget calculations. Scotland and Northern Ireland may have separate support programmes with different conditions.
| Product/Service | Provider | Cost Estimation |
|---|---|---|
| Air-source heat pump unit (6–10 kW) | Vaillant, Mitsubishi, Daikin, Samsung | £3,000 – £8,000 |
| Full installation (labour, pipework, electrics) | Local MCS-certified installers | £2,000 – £5,000 |
| Hot-water cylinder | Various suppliers | £500 – £1,200 |
| Radiator upgrades (per radiator) | Various suppliers/installers | £150 – £600 per unit |
| Smart controls and thermostat | Nest, Honeywell, Climote | £150 – £500 |
| Insulation upgrades (loft/wall, if needed) | Local insulation contractors | £500 – £3,000+ |
| Boiler Upgrade Scheme grant (if eligible) | UK Government / Ofgem | Up to -£7,500 |
Prices, rates, or cost estimates mentioned in this article are based on the latest available information but may change over time. Independent research is advised before making financial decisions.
How to compare quotations, running assumptions, warranty and total installed cost
When gathering quotes, it is important to ensure each one covers the full scope of work, including the survey, design, all components, labour, and commissioning. A quote that appears low may exclude items such as the hot-water cylinder or radiator upgrades, making direct comparison difficult. Ask each installer to confirm the assumed running costs and efficiency figures (expressed as the Coefficient of Performance or COP) they have used in their calculations. Warranty terms vary — most heat-pump manufacturers offer five to seven years as standard, with extended cover available. Always verify that the installer holds MCS certification, as this is required to access government grant schemes.
Getting a clear picture of the total installed cost — unit, labour, components, any necessary upgrades, minus any applicable grants — gives you a realistic basis for decision-making. Heat pump installations represent a significant upfront investment, but with careful planning, the right system design, and awareness of available support, many UK households find the long-term running cost profile works in their favour compared to fossil fuel alternatives.
