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
The cheapest electricity tariff for running a heat pump in the UK is a dedicated heat pump tariff, with Octopus Flux offering the lowest off-peak rate at around 12.5p/kWh between…
Yes, you can get a heat pump grant if you rent privately in the UK, but only with your landlord's written permission. The Boiler Upgrade Scheme (BUS) offers a £7,500…
Installing a hybrid heat pump system in the UK typically costs between £7,000 and £14,000, which includes both the air-source heat pump and a new gas boiler. The heat pump…
Yes, installing a heat pump will improve your EPC rating, typically by 10–20 points depending on your current heating system and property efficiency. For example, replacing a G-rated gas boiler…
The best gas boiler for most UK homes in 2026 is a high-efficiency condensing model with a seasonal efficiency of at least 92%, such as the Worcester Bosch Greenstar 8000…
For 2026, Vaillant edges ahead of Worcester Bosch for long-term value, offering a standard 7-year warranty (extendable to 10 years) versus Worcester Bosch's 5-year warranty (extendable to 7 years). Vaillant…
A straightforward like-for-like boiler swap in the UK usually takes one working day, around six to eight hours, while changing system types or moving the boiler can extend the job…
To bleed a radiator in the UK, turn off your heating, wait for the radiator to cool, then use a radiator key (around £2 from hardware stores) to open the…
For maximum efficiency, set TRVs to '3' (20°C) in living areas and '2' (16°C) in bedrooms, with unused rooms on frost protection, as advised by the Energy Saving Trust. This…
The average electric boiler running cost in the UK is between £1,200 and £2,400 per year for a typical three-bedroom home, based on electricity at 24.5p/kWh under the 2026 Ofgem…
For most UK homes, a combi boiler is the best choice because it heats water on demand and needs no tanks, but a system or regular boiler may suit larger…
Yes, your existing radiators will likely work with a heat pump, but they usually need to be oversized or upgraded to deliver the same heat output at the lower flow…
Yes, modern heat pumps are built to handle UK winter temperatures effectively. Most air source heat pumps maintain a Coefficient of Performance (COP) of 2.5 or higher even at -5°C,…
The key difference is that COP measures efficiency at a single outdoor temperature, typically +7°C, while SCOP gives a realistic annual average across the full UK heating season. A typical…
For a UK home with a heat pump, the most common hot water cylinder size is 200–250 litres, as heat pumps heat water more slowly and need larger storage to…
Yes, you almost certainly need bigger radiators for a heat pump in the UK. Heat pumps run at lower flow temperatures (35°C–45°C) than gas boilers (60°C–75°C), so existing radiators may…
Air source heat pumps typically produce 40-60 decibels at 1 metre, similar to a modern fridge, and UK rules under permitted development require them to stay below 42 dB(A) at…
A hybrid heat pump system is worth it for many UK homes, especially older or draughty properties where a full heat pump is impractical. Installed costs range from £7,000 to…
The best heat pump brands for UK homes in 2026 are Mitsubishi Electric, Daikin, and Vaillant, based on reliability, efficiency, and installer satisfaction from the Energy Saving Trust's 2026 guide.…
An air source heat pump typically costs between £400 and £800 per year to run, while a gas boiler costs £900 to £1,200, making the heat pump 30-50% cheaper on…
The best conservatory heating and cooling in the UK costs £150–£4,500 upfront, with no heat pump needed. Underfloor heating at £2,500–£4,500 suits daily use; electric radiators from £150 work for…
Heat pump glycol antifreeze costs £100–£300 for a typical UK install. Propylene glycol is the safe choice for domestic systems, while ethylene glycol is toxic and only for commercial use.…
A heat pump expansion vessel costs £110–£280 installed in the UK (2026). It is a legal requirement under Building Regulations Parts G and L for any sealed system. Oversizing is…
Heat pump end of life disposal in the UK costs £150–£350 in 2026. Refrigerant must be recovered by an F-gas certified engineer before scrapping, as required by UK law. Compare…
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…
