Grants
📅 June 2026
Heat Pump Costs UK 2026: What You’ll Actually Pay (After Grants)
Before the grant, heat pumps cost £8,000–£15,000. After the £7,500 Boiler Upgrade Scheme grant, most homeowners pay £500–£7,500 — comparable to a new gas boiler. Here’s the honest breakdown.
⏱️ 8 min read
✍️ Cool Power Co Editorial
Heat pump costs UK — this is one of the most searched home energy questions in 2026, and for good reason. Headlines range from “heat pumps cost £20,000” to “get one for free” — neither is typically true for most homeowners. The real answer sits somewhere between £500 and £12,000 after the government grant, depending on your property, current heating system, and whether you need additional work.
This guide cuts through the noise with real 2026 pricing data, honest running cost comparisons, and a clear explanation of what the £7,500 Boiler Upgrade Scheme grant actually covers.
Key numbers at a glance
Heat Pump Installation Costs UK 2026 — Before Grants
A fully installed air source heat pump in the UK costs £8,000–£15,000 before any grants. The Ofgem BUS statistics put the average across actual UK installations at around £12,500 for an 8kW unit as of January 2026. Ground source heat pumps cost significantly more — typically £18,000–£35,000 — due to the groundworks required.
What Pushes Heat Pump Costs Up
The headline installation figure rarely tells the full story. Several factors can add significantly to the total cost — and a good installer will survey your property and flag these before quoting.
Heat pumps run at lower flow temperatures than gas boilers. If your existing radiators are undersized they won’t deliver enough heat — typically 1–3 need replacing in an average home.
Heat pumps need a hot water cylinder — if you currently have a combi boiler you’ll need one installed. This is the most common hidden cost for combi boiler replacements.
A poorly insulated home needs a larger, more expensive heat pump and has higher running costs. Improving insulation first reduces both the system size needed and ongoing bills. See our insulation guide.
Older properties sometimes need consumer unit upgrades or additional circuits to handle the heat pump’s electrical demand.
The Boiler Upgrade Scheme — £7,500 Grant Explained
The Boiler Upgrade Scheme (BUS) is the UK government’s main grant for replacing fossil fuel heating with a heat pump. It provides £7,500 towards the cost of an air source or ground source heat pump — deducted directly from your installer’s invoice. You never pay the full amount upfront.
Key BUS facts for 2026
- ✅£7,500 for air source and ground source heat pumps
- ✅£9,000 for oil/LPG homes from 21 July 2026
- ✅£2,500 for air-to-air heat pumps (new from April 2026)
- ✅Runs until April 2028 — no rush but don’t leave it indefinitely
- ✅Available in England and Wales only
- ✅No means testing — available to all eligible homeowners
- ✅Your installer applies — you do nothing except choose an MCS-certified installer
⚠️ Scotland: Scottish homeowners use the Home Energy Scotland Grant and Loan scheme instead of BUS — up to £9,000 grant plus an optional interest-free loan. Call 0808 808 2282 for details.
Heat Pump Running Costs UK 2026
Running costs are where heat pumps get complicated — and where many comparisons mislead. The headline is: on a standard tariff, a heat pump costs broadly similar to a gas boiler. Switch to a dedicated heat pump tariff and it becomes cheaper.
Based on Ofgem Q1 2026 rates (electricity 24.67p/kWh, gas 5.74p/kWh) for a 3-bed semi with 15,000 kWh annual heat demand. A heat pump tariff like Octopus Cosy offers cheaper electricity during off-peak hours, significantly reducing running costs.
Is a Heat Pump Worth It in 2026?
The honest answer depends on what you’re replacing and your situation. Here’s how to work out which camp you’re in:
✅ Strong case — replacing oil or LPG
Oil and LPG are expensive fuels. A heat pump saves money on running costs from day one, and from July 2026 the grant increases to £9,000 for off-gas homes. The financial case is compelling — payback often under 10 years.
⚡ Decent case — replacing gas, switching tariff
On a heat pump tariff, running costs are lower than gas. The £7,500 grant reduces upfront cost to comparable with a new boiler for many homes. Worth doing, especially for newer or well-insulated properties.
⚠️ Weaker case — poorly insulated home
Poor insulation forces the heat pump to work harder, reducing efficiency and increasing running costs. Insulate first — cavity wall and loft insulation are cheap by comparison and dramatically improve heat pump performance. See our insulation guide for costs and grants.
How to Get an Accurate Heat Pump Quote
Online calculators give rough estimates. The only way to get an accurate cost is a proper heat loss survey — a calculation of exactly how much heat your home loses and what size system is needed to replace it. A good MCS-certified installer will always carry this out before quoting.
What to check when getting quotes
- ✅Installer is MCS certified — required for BUS grant
- ✅Quote includes a full heat loss calculation
- ✅BUS grant is included — deducted from the invoice
- ✅Quote covers all associated work — cylinder, radiators if needed
- ✅Get at least 3 quotes — prices vary significantly between installers
Further Reading
This article was published in June 2026. Costs and grant figures are based on industry data current at time of writing and may change. Always get a formal quote from an MCS-certified installer before making any decisions. Cool Power Co is an independent website and is not affiliated with any manufacturer, installer, or government body.
Get Free Heat Pump Quotes
Compare quotes from MCS-certified local installers. The £7,500 BUS grant is applied directly — you never pay the full price.