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
Heat pumps move existing heat instead of creating it by burning fuel A heat pump does not generate heat by burning gas or oil. Instead, it transfers thermal energy that already exists in the outside air, the ground, or a water source into your home. A gas boiler burns natural gas to produce heat directly. […]
A heat pump’s outdoor unit must be at least one metre from your house wall, but the exact distance depends on the model and local noise rules If you are planning to install an air-source heat pump, one of the first practical questions is where the outdoor unit will go. The minimum clearance for airflow […]
Heat pumps last 15–20 years – here is how that compares with a gas boiler (saving roughly £500–£1,000 over the lifetime) If you are replacing a heating system, you will want to know how long the new equipment will last before it needs replacing. The typical air-source heat pump has a manufacturer-stated lifespan of 15–20 […]
Heat pump capacitors typically last 5 to 10 years in UK homes If your heat pump has stopped working or is making unusual noises, the capacitor is often the first component to check. Industry data from the Heat Pump Association (HPA) and manufacturer specifications indicate that run capacitors have an expected lifespan of 40,000 to […]
A heat pump dryer typically lasts 10–14 years, which is 3–5 years longer than a conventional vented or condenser dryer. If you are choosing a new tumble dryer, the upfront cost is often the headline figure. But the total cost of ownership depends heavily on how long the appliance stays functional and efficient. The evidence […]
A heat pump water heater typically lasts 10 to 15 years, roughly the same as a conventional boiler The most common question from UK homeowners considering a switch is straightforward: how long heat pump water heaters actually last. The headline figure is 10 to 15 years, the manufacturer’s design life for a well-maintained unit (Energy […]
Air source heat pumps typically defrost for 2 to 15 minutes per cycle, with most units completing a defrost cycle in under 10 minutes. The Energy Saving Trust confirms that modern heat pumps automatically defrost their outdoor coils when ice builds up, usually lasting 2–10 minutes (Energy Saving Trust, 2026). Defrost cycles occur intermittently during […]
A heat pump dryer typically takes 90 to 150 minutes to dry a full load, which is 30 to 60 minutes longer than a vented or condenser dryer. If you are considering switching from a conventional vented or condenser dryer to a heat pump model, the longer cycle time is often the first trade-off you […]
Octopus Energy’s heat pump installations are a small but fast-growing share of the UK total How many heat pumps has Octopus installed in the UK? Octopus Energy, through its installation arm Octopus Energy Services, reported 40,000 heat pump installations by the end of 2025, according to company press releases and its 2025 annual impact report. […]
Over 150,000 heat pumps have been installed in Ireland as of early 2026 If you are wondering how many heat pumps have been installed in Ireland, the total has reached approximately 150,000 by the end of 2025. This figure comes from the Sustainable Energy Authority of Ireland (SEAI). The 150,000 total represents cumulative installations across […]
The number of heat pump installations in the UK is the key measure of the country’s heating transition For any homeowner considering a low-carbon heating system, the single most important fact is the official installation figure for the most recent full year. Published data from the government’s Microgeneration Certification Scheme (MCS) and the Department for […]
The single most important thing to know one heat pump per house is the standard rule If you are looking into heat pumps, the first question is often about how many you need. The answer is straightforward for the vast majority of UK homes. Quick Answer One heat pump per house is the standard rule […]
An air source heat pump works by extracting heat from outside air and transferring it indoors using a refrigeration cycle, achieving efficiencies of 300-400% compared to a gas boiler’s 90% efficiency (Energy Saving Trust, 2026). This makes it a low-carbon heating alternative for UK homes. Key Takeaways Air source heat pumps achieve 300-400% efficiency vs […]
A heat pump can cool your home in summer for roughly £150–£300 in electricity per season If you are wondering how a heat pump works in summer, the short answer is that the same system that heats your home in winter can also cool it, by reversing its refrigerant cycle. The typical electricity cost to […]
If you have heard that a heat pump can cut your heating bills but costs thousands more to install than a gas boiler, you may wonder how the technology actually works. The basic principle is simple, even if the system looks unfamiliar. Quick Answer A heat pump can cut your heating bills by 25% but […]
The UK passed 550,000 heat pump installations by early 2026, but the annual rate still lags behind the government’s target As of January 2026, the total number of heat pump installations in UK homes is estimated at 550,000, based on cumulative MCS-certified installations and non-MCS heat pump sales reported by the Heat Pump Association (HPA). […]
The UK has over 1,000 MCS-certified heat pump installer companies, but the number of individual installers is harder to pin down The most commonly cited figure for heat pump installers in the UK comes from the Microgeneration Certification Scheme (MCS) database, which lists the number of certified companies, not individual workers. As of early 2026, […]
A 2026 air-source heat pump installation costs roughly three times more than a new gas boiler, but government grants can cut that gap in half. Homeowners considering a heat pump in 2026 face a significant upfront cost compared to a traditional gas boiler. However, the available government grant substantially reduces the financial burden. Quick Answer […]
As of 2026, over 1.2 million heat pumps have been installed in UK homes, according to the latest data from the Department for Energy Security and Net Zero (DESNZ, 2026). This figure covers both air source and ground source heat pumps, with the vast majority being air source units. Key Takeaways Over 1.2 million heat […]
A heat pump costs £7,000 to £13,000 installed after the £7,500 grant The Boiler Upgrade Scheme (BUS) provides a flat £7,500 grant for an air source heat pump installation in England and Wales, reducing the upfront cost. Total installed cost before the grant typically ranges from £9,000 to £18,000 depending on property size, system complexity, […]
Heat pump water heaters use less than half the electricity of a standard immersion heater A heat pump water heater (HPWH) is a hot water cylinder that uses a heat pump to warm the water, rather than a direct electric immersion element. It works like a fridge in reverse, extracting heat from the surrounding air […]
The average running cost of a heat pump in 2026 is £850–£1,200 per year for a typical three-bedroom home. If you are considering replacing your gas boiler, the question of running costs is likely top of your list. The direct answer is that a heat pump will typically cost you between £850 and £1,200 per […]
A heat pump hot water cylinder is worth it for most homes off the gas grid, cutting water-heating costs by up to 50% compared to a standard electric immersion heater (Energy Saving Trust, 2026). The upfront cost is higher, but the running savings and 2026 grant eligibility often tip the balance. Key Takeaways Heat pump […]
A heat pump costs £7,000 to £13,000 installed after the Boiler Upgrade Scheme grant The total cost of a heat pump depends on the type of system and your home. Most homeowners pay between £7,000 and £13,000 after the government grant is applied. Quick Answer A heat pump in Ontario costs £7,000-£13,000 after the £7,500 […]
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.
How Heat Pumps and Gas Boilers Compare on Running Costs An air source heat pump (ASHP) produces 3-4 units of heat for every unit of electricity consumed, measured as a Coefficient of Performance (COP). At current UK energy prices with electricity at 24.5p/kWh and gas at 6.4p/kWh, a well-installed heat pump costs approximately the same […]
Replacing a boiler is one of the most significant home improvement decisions a UK homeowner will make, and the emergence of hydrogen-ready boilers has added a genuinely confusing new dimension to what was already a complicated choice. These products are now widely stocked by installers across the country, with major brands including Worcester Bosch, Baxi, […]
Understanding the Difference Between Ground Source and Air Source Heat Pumps Heat pumps are now one of the most discussed home heating technologies in the UK, yet many homeowners remain unsure about the fundamental differences between the two main types. Choosing the wrong system, or installing either type in the wrong home, can result in […]
The Boiler Upgrade Scheme is one of the most significant financial incentives available to UK homeowners wanting to swap their fossil fuel boiler for a low-carbon heating system, offering grants of up to £7,500 towards the cost of installation in 2026. ⚡ Quick Answer The Boiler Upgrade Scheme is a UK Government grant programme administered […]
Heating bills remain one of the biggest household expenses across the United Kingdom, and for most homeowners, the central heating system runs on a programme set years ago that bears little resemblance to how the household actually lives today. A smart thermostat is one of the most accessible, low-cost upgrades available to address this directly, […]
Replacing a boiler is one of the largest single home improvement purchases most UK homeowners will make, and the range of prices quoted by different companies can be genuinely bewildering. Understanding what drives the cost, and what those costs actually cover, puts you in a far stronger position for getting a fair deal. ⚡ Quick […]
