Home Heat Pump Guide

Can You Get a Heat Pump Grant If You Have Gas Central Heating?

By Home Heat Pump Guide
Old gas boiler in a UK home cupboard eligible for replacement with a grant-funded heat pump
Gas central heating is the most common qualifying system for the £7,500 BUS grant — your old boiler is your ticket to funding.

Yes — and gas boiler replacement is exactly what the BUS grant was designed for. The Boiler Upgrade Scheme specifically targets homes switching from fossil fuel heating to heat pumps. If you have gas central heating, you tick one of the key eligibility boxes automatically.

See what switching from gas would cost after the £7,500 grant

Calculate Your Costs

Includes gas-to-heat-pump running cost comparison.

Eligibility for Homes with Gas Central Heating

Replacing a gas boiler with a heat pump meets the BUS requirement to switch from fossil fuel heating. You also need to own the property, be in England or Wales, and use an MCS-certified installer. GOV.UK does not list an EPC as an eligibility condition. Homes on mains gas get the standard £7,500; the higher £9,000 rate is only for off-gas homes replacing oil or LPG. Your installer handles the application.

What Changes When You Switch from Gas

New hot water cylinder installed in airing cupboard as part of gas-to-heat-pump switch
Switching from a combi gas boiler means adding a hot water cylinder — your installer includes this in the quote.
  • Your gas boiler is removed
  • An air source heat pump unit is installed outside
  • A hot water cylinder is usually added (replacing the combi boiler function)
  • Some radiators may need upgrading
  • The gas supply can be disconnected (saving the standing charge)

Cost Comparison: Gas vs Heat Pump

Annual Heating Costs: Gas Boiler vs Heat Pump

Gas boiler
£1,018/yr
Air source heat pump
£946/yr
ASHP + solar panels
£700/yr

Unit-rate costs at the October 2026 price cap (7.97p/kWh gas, 26.32p/kWh electricity) for a typical 3-bed semi needing 11,500 kWh of heat: gas boiler 90% efficient, heat pump SCOP 3.2. Disconnecting gas also saves the gas standing charge (about £108 a year). The solar figure is indicative. Actual costs depend on insulation, tariff, and usage. Solar panels can cut heat pump electricity costs by 30-50%.

Do You Need New Radiators?

Not always. Many existing radiators work with heat pumps, though some may need upsizing because heat pumps operate at lower flow temperatures than gas boilers. Your installer will assess this during their survey. Read our full radiator guide for details. See also our full heat pump vs gas boiler comparison.

Radiator in a UK home room being assessed for compatibility with a heat pump system
Most existing radiators work fine with a heat pump — your installer will check during the survey and advise on any upgrades needed.

Find out if your radiators need upgrading

Check Suitability

Quick assessment of your home's heat pump readiness.

Ready to switch from gas? Request a quote with the BUS grant deducted

Request a heat pump quote

Your MCS-certified installer must deduct the BUS grant from the price on your quote.

Frequently Asked Questions

Can I get a heat pump grant with gas central heating?

Yes. Gas boiler replacement is exactly what the BUS grant covers.

Is it worth switching from gas to a heat pump?

For most homes, yes. After the grant, the net cost is comparable to a new gas boiler, with lower running costs over 20-25 years. Read our full analysis of whether heat pumps are worth it.

Will I need new radiators?

Not always. Your installer will assess during the survey. Read our radiator guide.

About Switching from Gas to Heat Pumps

Replacing gas boilers with heat pumps is central to the UK's Net Zero strategy. The Boiler Upgrade Scheme was designed specifically for this transition, offering £7,500 to make the switch affordable. Air source heat pumps are the most popular replacement, delivering 3-4 units of heat per unit of electricity. The full comparison shows heat pumps winning on lifetime costs. Adding solar panels makes the economics even more compelling by generating free electricity to power the heat pump.

Thinking about a heat pump for your home?

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No obligation. We are not installers: we pass your request to an MCS-certified installer covering your area.