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 heat pump moves existing heat from outside air or ground into your home, using electricity only to run a compressor and fan. A CoP of 3.0 means 3 kWh…
A heat pump's outdoor unit must be at least 1 metre from your house wall for airflow, per the MCS 020 standard. Noise regulations require 3–8 metres from a neighbour's…
Heat pumps last 15–20 years, outlasting a gas boiler by 5–10 years. A well-maintained unit can reach 20–25 years, while poor installation or neglect can cut life to under 10…
Heat pump capacitors last 5 to 10 years in UK homes, with start capacitors failing sooner at 3 to 6 years. Run capacitors handle 40,000 to 60,000 running hours (DESNZ,…
A heat pump dryer typically lasts 10–14 years with normal household use. This is 3–5 years longer than conventional vented or condenser dryers, thanks to lower operating temperatures that reduce…
Heat pump water heaters last 10 to 15 years, matching gas boilers. The Boiler Upgrade Scheme grant of £7,500 can reduce upfront costs to below that of a gas boiler,…
Heat pump defrost cycles last 2 to 15 minutes, with most finishing in under 10 minutes. Find out what affects duration and when to worry about your unit.
A heat pump dryer typically takes 90 to 150 minutes for a full load, 30–60 minutes longer than vented models. Cycle time varies with load size, fabric type, spin speed,…
Octopus Energy installed 40,000 heat pumps by end of 2025, representing 8–10% of the UK total since 2020. Their installations grow 50–100% year-on-year, driven largely by the Boiler Upgrade Scheme…
Over 150,000 heat pumps have been installed in Ireland as of early 2026. This includes air-source, ground-source, and water-source units across residential, commercial, and public buildings, according to the SEAI.
83,000 heat pumps were installed in the UK in 2025, a 38% increase from 60,000 in 2024. This official MCS figure shows accelerating adoption but remains well below the government's…
One heat pump per house is the standard rule for UK homes. A single air source heat pump provides both space heating and hot water when sized correctly based on…
Air source heat pumps extract outdoor heat via a refrigeration cycle, hitting 300–400% efficiency vs a gas boiler's 90%. Here's how they heat UK homes.
A heat pump cools your home in summer for £150–£300 in electricity per season, based on Ofgem's 2026 rate of 27p per kWh. It reverses its refrigerant cycle to extract…
A heat pump can cut your heating bills by 25% but costs roughly £7,000 more upfront than a gas boiler. It works by moving heat from outside air or ground…
550,000 heat pumps have been installed in UK homes by early 2026, based on Heat Pump Association data. However, the annual installation rate of 60,000–70,000 is far below the government's…
The UK has over 1,100 MCS-certified heat pump installer companies, with an estimated 3,000 to 5,000 qualified individual installers active. This falls well short of the government's 2025 target of…
Air-source heat pump installation for a 3-bed semi-detached house costs £12,500-£14,500 in 2026. The £7,500 Boiler Upgrade Scheme grant reduces this to £5,000-£7,000, making it much more affordable compared to…
Over 1.2 million heat pumps are installed in UK homes as of 2026, with 180,000 added in 2025 alone. See how UK uptake compares to France and Germany.
A heat pump costs £7,000 to £13,000 installed after the £7,500 Boiler Upgrade Scheme grant. Annual running costs for a 3-bed home are £650 to £1,100, depending on your heat…
Heat pump water heaters are worth it if you have electric immersion heating, cutting running costs by 50–60%. Against a gas combi boiler, savings are only £20–50 per year, so…
Heat pump running costs in 2026 are £850-£1,200 per year for a 3-bed home, compared to £700-£900 for a gas boiler. The higher electricity price is offset by the heat…
A heat pump hot water cylinder cuts water-heating costs by up to 50% vs electric immersion. See 2026 grant eligibility and a 3–5 year payback explained.
A heat pump in Ontario costs £7,000-£13,000 after the £7,500 Boiler Upgrade Scheme grant. Running costs are 30-50% lower than a gas boiler, saving £300-£450 per year.
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…
