Compare boilers, heat pumps, and heating systems for UK homes. Running costs, government grants, sizing guides, and advice on switching from gas to renewable heating.
506 articles
A new LPG boiler costs £1,500–£3,500 installed in 2026. Replacing an old G-rated model saves £250–£350 per year on fuel. Payback is typically 5–10 years, depending on house size and…
Oil boiler replacement in 2026 costs between £2,000 and £4,500 installed, with no government grant for like-for-like swaps. Switching to a heat pump costs £7,000-£13,000 but the £7,500 BUS grant…
A biomass boiler costs £7,000-£15,000 installed in 2026, but the Clean Heat Grant cuts this by £7,500 in Great Britain. Running costs for wood pellets average 5-7p per kWh, beating…
The 2035 gas boiler ban is confirmed and unchanged as of 2026. You can keep your existing boiler indefinitely, but new installations must switch to heat pumps or hybrids from…
Repair a boiler if cost is under £1,250 (50% of a new £2,500 boiler) and it's under 10 years old. Replace if repair exceeds 50% or boiler is over 15…
Boiler error codes in the UK cost homeowners an average of £150 in call-out fees before any repair. Some codes like low water pressure or temporary flame loss can be…
Low boiler pressure affects 15% of UK homes and most combi boiler owners can repressurise themselves in under 5 minutes. If pressure drops repeatedly, expect a £60-£300 repair cost that…
Boiler weather compensation UK saves 8–12% on gas bills. It costs £150–£350 to install, with a typical payback of 1–3 years. Most condensing boilers from after 2010 are compatible.
A smart thermostat boiler upgrade costs £120-£400 including installation. The Energy Saving Trust estimates up to 12% savings on heating bills by replacing a basic timer. Most models work with…
Power flushing UK 2026 costs £300–£600 for a typical 3-bed home with 10 radiators, averaging £450. A blocked system wastes up to 15% of your gas bill, saving around £180…
Annual boiler service UK costs £80–£120 for gas boilers and £100–£160 for oil boilers (Checkatrade and Ofgem, 2026). Landlords are legally required to service annually; homeowners need it to keep…
The average boiler service cost UK 2026 is £72–£96 for a gas combi boiler, according to Checkatrade. Prices vary by boiler type and region, with oil services costing £95–£130.
Replace your boiler when it is over 15 years old or under 70% efficiency, saving up to £300 per year with a new A-rated model. Avoid emergency call-out fees by…
Boiler warranty UK 2026 typically covers parts for 2 to 12 years, with labour only in year one unless you pay extra. Worcester Bosch and Ideal offer the longest 12-year…
A hydrogen-ready boiler costs £1,500-£3,000 installed, similar to a standard gas boiler. It burns natural gas now but can be switched to hydrogen later with a quick adjustment. No government…
Worcester Bosch costs £1,100–£1,600, Vaillant £1,000–£1,500, and Ideal £800–£1,200 installed. Choose Ideal for lowest upfront price, Vaillant for balanced cost and reliability, or Worcester for longest warranty and best resale…
Vaillant is the most reliable boiler brand UK 2026, with a claims rate of 0.8 per 1,000 units. Worcester Bosch leads on warranty length but has higher claims. Compare warranty…
A standard boiler installation in the UK costs £1,500 to £4,000 in 2026, depending on fuel type and complexity. The process takes 1-2 days and requires a Gas Safe or…
A new boiler in 2026 costs £1,800–£5,500 fully installed, with the average gas combi replacement at £2,800. The final price depends on boiler type, size, brand, and installation complexity.
A conventional boiler costs £800-£1,500 for the unit plus £1,200-£2,000 installation in 2026. It requires two loft tanks and a hot water cylinder, making it best for larger homes with…
System vs combi boiler UK – the one-line difference is a hot water cylinder. System boilers store water for high flow rates, suiting larger homes. Combi boilers heat on demand,…
A gas combi boiler installed costs £2,800-£4,200 in 2026, while an air source heat pump costs £12,000-£16,000 before the £7,500 grant. After the grant, heat pump net cost is £4,500-£8,500.…
A bad heat pump installer can cost you £12,000+ in repairs and void your warranty. Always demand an MCS certificate before hiring to qualify for the £7,500 Boiler Upgrade Scheme…
Replacing an oil boiler with a heat pump costs £9,000–£15,000 after the £7,500 Boiler Upgrade Scheme grant in 2026. Running costs are 30–50% lower than oil heating, with a payback…
A new combi boiler costs between 2,000 and 3,500 pounds installed, including flue and controls. System boilers with a hot water cylinder cost 2,500 to 4,500 pounds. Prices vary by brand, output size, and complexity of the installation.
At 2026 energy prices, an air source heat pump with a COP of 3 costs roughly the same as a gas boiler to run. With electricity at 24.5p per kWh and gas at 7.2p per kWh, the heat pump produces heat at about 8.2p per kWh compared to gas at around 8p per kWh including boiler efficiency. The 7,500 pound BUS grant makes the overall economics favourable.
Yes, but older houses often need some preparation. The key requirements are adequate insulation, possibly larger radiators or underfloor heating for lower flow temperatures, and sufficient outdoor space for the external unit. A professional heat loss survey will determine what upgrades are needed.
The BUS provides 7,500 pounds towards installing an air source or ground source heat pump. Your home must have an EPC, be replacing a fossil fuel heating system, and use an MCS-certified installer. The property must be in England or Wales and you cannot have previously claimed a renewable heat incentive.
Air source heat pumps typically last 15 to 20 years, while ground source heat pumps can last 20 to 25 years. A well-maintained gas boiler lasts 10 to 15 years. Heat pumps have fewer moving parts and require less maintenance.
Air source heat pumps cost £800-£1,100 per year to run in a typical UK three-bedroom semi, comparable to a new gas boiler. With a £7,500 government grant available through the…
A hydrogen-ready boiler is a gas boiler engineered to switch to 100% hydrogen in the future with minor component changes, and in 2026 it costs roughly £100 to £300 more…
For most UK homeowners, an air source heat pump is the more practical and affordable choice, costing roughly £8,000–£15,000 installed before the £7,500 Boiler Upgrade Scheme grant reduces the net…
The Boiler Upgrade Scheme is a UK Government grant programme administered by Ofgem that provides upfront discounts of up to £7,500 off the cost of installing a low-carbon heating system…
The best smart thermostats available in the UK can save a typical household between £75 and £150 per year on heating bills, according to Energy Saving Trust guidance, with top-rated…
A new boiler installed in the UK in 2026 costs between £1,500 and £4,500 all in, covering the boiler unit, labour, and standard fitting materials. A simple like-for-like combi boiler…
