How much do commercial heat pump installers cost?

There is no single sticker price for a commercial heat pump, and any installer who quotes one before seeing your consumption data is guessing. Cost is driven by the building's peak heat load, the technology that suits it, how much of your existing emitter system can stay, and whether your electricity supply needs an upgrade. As a guide, a commercial air-source system typically runs £60,000 to £600,000. Ground-source sits higher, £150,000 to £2m and beyond, because of the boreholes or ground loops. A hybrid boiler-replacement retrofit lands around £70,000 to £500,000, and high-temperature process systems or heat networks reach several million.

What actually drives the number

Four things move the price more than anything else. The first is peak heat load: sizing is set by your building's heat-loss and annual demand profile, not floor area, which is why we survey before we quote. The second is your emitters. Radiators sized for a 70 to 80 degree gas boiler run a heat pump best at 45 to 55 degrees, so some emitter upgrades are common. Where high flow temperatures are genuinely needed, a high-temperature unit or a hybrid avoids re-emittering the whole site. The third is the electrical supply: a large heat pump adds real load, and a DNO supply upgrade, if needed, is often the longest-lead and a meaningful line item. The fourth is ground works, which only apply to ground-source but dominate that budget.

Air-source versus ground-source on cost

Air-source is the lower-capital, faster, lowest-disruption route with no ground works and a typical SCOP of 3.0 to 4.0. Ground-source costs more up front because of drilling, but delivers a higher and more stable SCOP, often above 4.0 all year, including the coldest days when air-source dips, plus low-cost summer cooling. It earns the premium on buildings that run year-round, care homes, hospitals, hotels, leisure centres, and where PSDS or Green Heat Network Fund money can cover the capital. We model both side by side from your data so you see the whole-life cost of each before deciding.

Running cost, the honest version

Electricity currently costs roughly three to four times the unit price of gas, so the running-cost case lives and dies on the SCOP. A system delivering a SCOP of 3.5 produces 3.5 units of heat per unit of electricity, which offsets most of that price gap. With a low flow temperature and a sensible electricity tariff, well-designed commercial systems are at or below gas running cost today, and the gap improves every year as gas carbon levies rise and the grid decarbonises. We model running cost from your actual consumption, not estimates, and hand you the model.

Financing and tax relief

Most businesses use capital purchase plus tax relief. Full expensing gives companies a 100% first-year deduction on qualifying plant and machinery with no cap, worth up to 25p of tax saved per pound spent at the 25% corporation-tax rate, and it is permanent from April 2026. Unincorporated businesses use the Annual Investment Allowance instead, up to £1m at 100%. Asset finance spreads the capital over several years. Public bodies and eligible industrial sites should look at grant funding first, the commercial funding routes are different from anything domestic, and the £7,500 Boiler Upgrade Scheme does not apply to commercial buildings. Confirm the tax treatment with your accountant, and see HMRC's capital allowances guidance for the detail.

The cards below set out indicative cost, payback, and heat delivered for each system type. When you are ready, request a quote and we will model the full installed cost from your heat-loss survey before you commit a penny.