Commercial heat pump cost — UK prices by kW, source type and funding applied.

Running cost — the COP economics versus gas, honestly

Capex is only half the decision. The running cost of a commercial heat pump is governed by its Coefficient of Performance (COP) — the units of heat delivered per unit of electricity consumed. UK seasonal figures are typically 2.8-3.5 for air-source and 3.5-4.5 for ground-source, with high-temperature units lower. The running cost per kWh of heat is simply your electricity unit price divided by COP.

Worked heat-cost-per-kWh comparison

At an indicative commercial electricity price of 24p/kWh in 2026:

• Air-source, COP 3.2: 24p ÷ 3.2 = ~7.5p per kWh of heat
• Ground-source, COP 4.0: 24p ÷ 4.0 = ~6.0p per kWh of heat
• High-temperature, COP 2.5: 24p ÷ 2.5 = ~9.6p per kWh of heat
• Gas boiler (for comparison): ~7-8p per kWh of heat at 2026 commercial gas prices and ~90% boiler efficiency

Heat cost per kWh — heat pump vs gas at each SCOP

The make-or-break number, tabulated at an indicative 26p/kWh commercial electricity and ~7.4p/kWh commercial gas in 2026. Read it honestly: below SCOP ~3.25 a heat pump runs dearer than gas, and the running-cost win only becomes decisive once on-site solar enters the blend.

Break-even sits near SCOP 3.25 at this price ratio. The blended-solar row assumes daytime heat load is largely covered by self-consumed PV at ~4-6p, pulling the average electricity price feeding the unit to ~9p/kWh.

The honest read: at today's UK electricity-to-gas price ratio, an air-source heat pump roughly matches gas on pure running cost, ground-source edges ahead, and high-temperature units can run dearer. This is why the heat pump case rarely rests on fuel savings alone in 2026. The decision usually turns on three other levers: the carbon reduction (often a hard requirement for tenders, lenders and net-zero targets), the grant and tax support that cuts capex, and — critically — pairing the heat pump's continuous electrical load with on-site solar so a chunk of that 24p/kWh is displaced by self-generated power at a fraction of the price. Self-consumed solar at an effective 4-6p/kWh feeding a COP-3.2 heat pump pushes heat cost well below gas.

Cost after funding — a worked net example

Indicative figures for a UK incorporated company installing a 250kW air-source heat pump with moderate hydronic upgrade:

• Headline turnkey capex (heat pump + hydronic + controls): £250,000
• Full Expensing — 25% effective corporation-tax saving on qualifying plant: −£62,500
• Net cost to a tax-paying company: ~£187,500
• For a public-sector body instead: an interest-free Salix loan can fund the capex, repaid from energy and maintenance savings — turning the upfront figure into a cash-flow-neutral phased cost
• For a Scottish industrial site: the Scottish IETF can grant-fund a share of high-temperature heat pump capex on top

So the same £250k sticker price becomes ~£187,500 net for a company via Full Expensing, or an effectively zero-upfront, savings-repaid project for a public-sector estate via Salix. The funding route, more than the technology choice, often decides whether a scheme clears its business case.

Commercial heat pump grants 2026 — what is open vs closed

This is where independence matters most. A lot of guidance points businesses at the Boiler Upgrade Scheme — which is domestic only and does NOT cover commercial heat pumps. Here is the funding that a commercial site can actually use in 2026, by who you are and where you operate. Grants run roughly 25-40% of capex by nation; the tax route (Full Expensing) is the broadest and applies to any UK tax-paying company.

PSDS Phase 4 grant funding and the English IETF are closed to new applications; Salix loans remain open for public bodies. The Boiler Upgrade Scheme row is included only to flag that it does not apply to commercial premises. Indicative 2026 — call windows change.

How to apply for commercial heat pump funding

Our specialism is turning the gross price into a funded net cost and writing the application. This is the route we run for clients — independent of any installer:

1. 1
   Confirm your legal status and nation

   Your funding route is decided first by who you are — private company (Full Expensing), public body (Salix), or Scottish/Welsh/NI industrial site (devolved grants) — and second by where the site is. We map your eligible schemes before any quote.
2. 2
   Get an MCS-eligible heat pump design

   Commission a heat-loss survey and an MCS-certified system design. MCS certification is the gateway to grant eligibility and to a future SEG export contract on any paired solar — without it most funding is off the table.
3. 3
   Size the capex and the net-of-funding figure

   We build the installed cost from the line items (plant, hydronics, electrical/DNO, controls, design) and subtract the applicable allowance or grant to give the effective net spend — the number your finance director signs off.
4. 4
   Prepare and lodge the funding application

   For Full Expensing we document the qualifying plant for your accountant; for Salix or devolved grants we write the application, energy-saving case and carbon scoring, then submit on your behalf.
5. 5
   Bundle solar to cut running cost and lift grant scoring

   Pairing the heat pump with on-site solar improves the carbon score on competitive grant bids and slashes the effective electricity price feeding the unit — the single biggest lever on running-cost economics.

Sector note — why process heat costs more than space heating

Two buildings with identical annual heat demand can carry very different heat pump costs because the required output temperature differs. An office, care home, hotel or school needing space heating and hot water under 65°C is well inside standard air or ground-source territory — lower capex, higher COP, lower running cost. By contrast:

• Food processing — pasteurisation, sterilisation and evaporation often need 75-90°C+, forcing high-temperature units or hybrids at a higher £/kW and lower COP
• Distilling — distillation heat is high-grade; mashing and CIP hot water are heat-pump-friendly, so hybrid splits are common
• Pharma and chemicals — process and clean-steam loads sit above standard heat pump output, raising both capex and running cost

The practical takeaway: scope your heat profile by temperature band before pricing. Low-grade heat is cheap to electrify; high-grade process heat is where cost — and the running-cost gap versus gas — climbs.

Funding that offsets the cost

• Full Expensing — heat pump plant qualifies; 25% effective corporation-tax saving for UK incorporated companies
• Salix loans — interest-free public-sector loans for heat pump retrofit, repaid from energy savings
• Local Growth Fund — capital grants across the Mayoral Strategic Authority areas
• Scottish IETF — still active for Scottish industrial high-temperature heat pumps
• Welsh Industrial Decarbonisation programmes — active for Welsh sites
• Closed: English IETF (closed Spring 2024); the Boiler Upgrade Scheme is largely domestic

Related

• Commercial heat pumps — the full overview: types, funding stack and solar integration
• Salix finance — interest-free public-sector route for heat pump capex
• Full Expensing — the 25% tax saving that applies to heat pump plant
• Commercial battery storage — three-way bundle with PV and heat pump
• Net zero for business — where heat pumps fit the wider decarbonisation plan