Are you weighing up whether to install a heat pump or stick with a gas boiler? The decision often comes down to cost over the long term.
A heat pump saves £2,000-£4,000 over 10 years vs a gas boiler (DESNZ 2026). This assumes a well-insulated home and the £7,500 Boiler Upgrade Scheme grant. Annual running costs are £300-£400 lower for a heat pump at current energy price caps.
- Heat pump saves £2,000-£4,000 over 10 years vs gas boiler (DESNZ 2026).
- Net heat pump cost is £4,500-£7,500 after £7,500 Boiler Upgrade Scheme grant.
- Annual running costs are £300-£400 less for a heat pump in a well-insulated home.
- Gas boiler costs £2,500-£4,500 upfront versus heat pump's £12,000-£15,000.
- Total cost of ownership is lower for heat pumps in most insulated homes (DESNZ).
- The 10-Year Total Cost of a Heat Pump Is Lower Than a Gas Boiler for Most Homes
- Annual Running Costs Heat Pump vs Gas Boiler
- Installation Costs and the Boiler Upgrade Scheme Grant
- Maintenance Costs Over 10 Years
- Quick Numbers 10-Year Cost Comparison Table
- Over 10 Years, a Heat Pump Saves the Average Home £2,000–£4,000 vs a Gas Boiler
- How to Verify an Installer MCS Certification and TrustMark
- Resale Value Impact Heat Pumps Add Value, Gas Boilers Do Not
Over 10 years, a heat pump saves the average home between £2,000 and £4,000 compared with a gas boiler, according to the Department for Energy Security and Net Zero’s 2026 cost analysis (DESNZ, 2026). This saving depends on the £7,500 Boiler Upgrade Scheme grant and current energy price caps.
The 10-Year Total Cost of a Heat Pump Is Lower Than a Gas Boiler for Most Homes
The average heat pump installation in the UK costs £12,000 to £15,000, based on the MCS Installation Database 2026 average (MCS, 2026). A new gas boiler costs between £2,500 and £4,500, according to GOV.UK Boiler Upgrade Scheme guidance (GOV.UK, 2026).
After the £7,500 Boiler Upgrade Scheme grant, a heat pump’s net upfront cost drops to £4,500 to £7,500. Over 10 years, the heat pump’s lower running costs offset this higher initial spend for a typical three-bed semi-detached home, based on the October 2026 energy price cap (Ofgem, 2026). The DESNZ 2026 analysis confirms that the total cost of ownership for a heat pump is lower for most homes with adequate insulation.
Annual Running Costs Heat Pump vs Gas Boiler
A typical heat pump with a Seasonal Coefficient of Performance (SCOP) of 3.5 costs £800 to £1,200 per year to run for a home with a 12,000 kWh heat demand, according to the Energy Saving Trust (Energy Saving Trust, 2026). The SCOP is a measure of how efficiently the heat pump converts electricity into heat over a full year.
A gas boiler operating at 90% efficiency costs £1,100 to £1,600 per year for the same home, based on Ofgem’s typical domestic consumption values for 2026 (Ofgem, 2026). The difference is £300 to £400 per year in favour of the heat pump, assuming current gas and electricity price ratios (DESNZ, 2026). These figures assume a well-insulated home. A heat pump’s running costs rise sharply in a draughty property (Energy Saving Trust, 2026).
Installation Costs and the Boiler Upgrade Scheme Grant
Heat pump installation costs average £12,000 to £15,000, as recorded in the MCS Installation Database for 2026 (MCS, 2026). A gas boiler installation costs £2,500 to £4,500 on average (GOV.UK, 2026).
The £7,500 Boiler Upgrade Scheme grant reduces a heat pump’s net cost to £4,500 to £7,500 (GOV.UK, 2026). The grant is available only for air-source heat pumps installed by MCS-certified installers. You must apply for the grant before installation begins, and the installer handles the application on your behalf.
Maintenance Costs Over 10 Years
Heat pump maintenance costs £150 to £250 per year for an annual service, according to MCS guidance (MCS, 2026). Gas boiler maintenance costs £80 to £150 per year for an annual service, plus £100 to £300 for a gas safety check every five years (Gas Safe Register, 2026).
Over 10 years, total heat pump maintenance comes to £1,500 to £2,500. Total gas boiler maintenance comes to £1,000 to £2,000. Heat pumps have fewer moving parts but require specialist servicing. Gas boilers need more frequent part replacements, such as fans or heat exchangers (Energy Saving Trust, 2026).
Quick Numbers 10-Year Cost Comparison Table
| Cost category | Heat pump (air-source) | Gas boiler (combi) |
|---|---|---|
| Upfront cost (net of grant) | £4,500 – £7,500 | £2,500 – £4,500 |
| Annual running cost | £800 – £1,200 | £1,100 – £1,600 |
| Annual maintenance cost | £150 – £250 | £80 – £150 |
| 10-year total (running + maintenance) | £9,500 – £14,500 | £11,800 – £17,500 |
| 10-year total (all-in with upfront) | £14,000 – £22,000 | £14,300 – £22,000 |
All figures are for a typical three-bed semi-detached home with 12,000 kWh annual heat demand, based on DESNZ 2026, Energy Saving Trust 2026, and MCS Installation Database 2026 data.
Over 10 Years, a Heat Pump Saves the Average Home £2,000–£4,000 vs a Gas Boiler
This is the direct answer to “heat pump vs gas boiler savings.” The saving of £2,000 to £4,000 over 10 years applies to a typical three-bed semi-detached home with 12,000 kWh heat demand, current energy prices, and the £7,500 grant (DESNZ, 2026).
The saving comes from lower running costs of £300 to £400 per year, which offset the higher upfront cost over the decade. Homes with poor insulation will see smaller savings or none at all. how to improve home insulation for heat pumps
How to Verify an Installer MCS Certification and TrustMark
For a heat pump, the installer must be MCS-certified to qualify for the Boiler Upgrade Scheme grant (GOV.UK, 2026). For a gas boiler, the installer must be Gas Safe Registered (Gas Safe Register, 2026).
TrustMark accreditation is recommended for both, as it covers consumer protection and quality standards (TrustMark, 2026). You can check the MCS installer database or the Gas Safe Register online to verify a specific installer before hiring. Never accept an installer who cannot provide proof of certification.
Resale Value Impact Heat Pumps Add Value, Gas Boilers Do Not
A heat pump can increase a home’s EPC rating from D to C or higher, which adds 1% to 3% to property value (Energy Saving Trust, 2026). A new gas boiler does not increase EPC rating or resale value beyond maintaining the current rating (DESNZ, 2026).
Homes with heat pumps are increasingly preferred by buyers in 2026 due to lower running costs and compliance with future carbon regulations (Energy Saving Trust, 2026). The DESNZ 2026 heat pump market analysis confirms this trend. how to check your EPC rating and improve it
Frequently Asked Questions
A heat pump saves between £2,000 and £4,000 over 10 years compared with a gas boiler, according to the Department for Energy Security and Net Zero's 2026 cost analysis (DESNZ, 2026). This saving accounts for the £7,500 Boiler Upgrade Scheme grant and current energy price caps.
Yes, a heat pump is cheaper to run. The Energy Saving Trust states that a typical heat pump costs £800-£1,200 per year, while a gas boiler costs £1,100-£1,600 per year for the same home, saving £300-£400 annually (Energy Saving Trust, 2026). These figures assume a well-insulated property.
A heat pump installation costs £12,000-£15,000, based on the MCS Installation Database 2026 average (MCS, 2026). A new gas boiler costs £2,500-£4,500, according to GOV.UK Boiler Upgrade Scheme guidance (GOV.UK, 2026). After the £7,500 grant, the heat pump's net cost drops to £4,500-£7,500.
Yes, a heat pump's running costs rise sharply in a draughty property, according to the Energy Saving Trust (2026). The £300-£400 annual savings compared with a gas boiler assume adequate insulation. Homes with poor insulation may see lower savings or higher costs.
The Boiler Upgrade Scheme provides a £7,500 grant for heat pump installations in 2026, as confirmed by GOV.UK guidance (GOV.UK, 2026). This reduces the net upfront cost of a heat pump to £4,500-£7,500 for most homes.
