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 average boiler service cost in the UK for 2026 is between £80 and £120 for a standard gas combi boiler If you own a gas combi boiler, the typical cost for an annual service in 2026 is £80 to £120. This figure is based on market rates published by Ofgem and the Energy Saving […]
The single most important fact a smart thermostat is not a heat pump, and the wrong one can prevent your heat pump from working efficiently A smart thermostat controls when and how your heating runs, but a heat pump needs a specific type of control that standard boiler thermostats do not provide. Fitting a boiler-only […]
A well-installed Viessmann condenser boiler can cost up to £1,500 more than a Worcester Bosch equivalent, yet the energy savings gap between the three brands is negligible in typical UK homes. Choosing between Worcester Bosch, Vaillant, and Viessmann is one of the most common decisions UK homeowners face when replacing a boiler. The three brands […]
Should you buy a hydrogen-ready boiler in 2026? A hydrogen-ready boiler is a standard gas boiler with a factory-fitted conversion kit that allows it to burn up to 20% hydrogen blended with natural gas, or be converted later to burn 100% hydrogen. In 2026, the answer is largely irrelevant to your heating bills: no domestic […]
Choosing a new combi boiler in 2026 involves balancing the sticker price against the cost of heating your home for the next decade. The UK boiler market splits into three clear price tiers: budget models under £800, mid-range boilers costing between £800 and £1,400, and premium units priced over £1,400. Quick Answer The best combi […]
The main difference between a combi, system, and regular boiler is how they handle your hot water supply All three boiler types heat your radiators in the same way, but the critical difference is how they produce and store hot water for your taps and showers. A combi boiler heats water instantly from the mains […]
Air-to-air heat pumps are the fastest-growing heating system in the UK in 2026 If you are looking for a heating system that can also cool your home, air-to-air heat pumps are gaining significant traction in the UK market. According to DESNZ data from February 2026, air-to-air heat pump installations under the Boiler Upgrade Scheme (BUS) […]
You are looking for a heat pump installer and want to know what MCS certification means. The term appears on every government grant page and installer website, but what it actually guarantees is often unclear. Quick Answer MCS certification is required to claim the £7,500 Boiler Upgrade Scheme grant. It covers the installer’s competence and […]
Heat pump servicing requirements and annual checks If you own a heat pump, you may be wondering whether an annual service is actually necessary or just another industry recommendation you can skip. The short answer is that skipping it can cost you thousands in repairs and void your warranty. Fewer than half of UK heat […]
The best heat pump brands in the UK for 2026 are ranked by reliability, efficiency, and warranty length Choosing a heat pump brand involves balancing upfront cost, long-term efficiency, and how likely the unit is to break down. Daikin, Mitsubishi Electric, and Vaillant consistently score highest in Which? member surveys for reliability and owner satisfaction […]
Heat pumps have been a hot topic for UK homeowners, especially those living in older properties. If you own a house built before 1950, you might be wondering if this modern heating technology can actually keep you warm without breaking the bank. Let’s cut through the noise and look at the hard numbers for 2026. […]
A heat pump’s COP is a lab test, while its SCOP is the real-world annual average, the difference can mean £200–£400 on your yearly heating bill If you are comparing heat pumps, you will see two efficiency numbers: COP and SCOP. They are not interchangeable, and using the wrong one can lead to a costly […]
A full heat pump installation typically takes 2 to 5 days, with the total project spanning 4 to 12 weeks from survey to sign-off. The on-site installation phase for an air source heat pump averages 2 to 5 days for a standard UK home, according to the Energy Systems Catapult’s Electrification of Heat Demonstration Project […]
The most important fact about hybrid heat pump boilers in the UK is that they are NOT eligible for the Boiler Upgrade Scheme (BUS) grant The Boiler Upgrade Scheme (BUS) provides a £7,500 grant for air-source heat pumps, but it explicitly excludes hybrid systems that retain a gas boiler as the primary or secondary heat […]
Heat pumps and underfloor heating work together at lower flow temperatures than radiators Heat pumps deliver hot water at lower temperatures than gas or oil boilers. An air-source or ground-source heat pump typically heats water to between 35°C and 55°C, while a gas boiler runs at 60–80°C (Energy Saving Trust, 2026). Underfloor heating systems are […]
Most heat pumps in the UK deliver full heating capacity down to at least -10°C, below the coldest UK winter temperatures The question of whether heat pumps work in cold UK winters is one of the most common concerns for homeowners considering a switch from a gas boiler. The short answer is that modern heat […]
The loudest part of a heat pump is the outdoor fan unit, not the indoor components An air-source heat pump (ASHP) has two main parts: an outdoor unit and, in many systems, an indoor unit. The outdoor unit contains a compressor and a fan, which generate the majority of operational noise. Indoor units, if present, […]
The short answer is that most homes need larger radiators for a heat pump, but not always a full replacement Heat pumps work differently from gas boilers, and this difference often means your existing radiators will not deliver enough heat. The direct answer is that in the majority of UK homes, at least some radiators […]
Air source and ground source heat pumps both qualify for the £7,500 Boiler Upgrade Scheme grant in 2026 If you are considering replacing a gas or oil boiler with a heat pump, the most immediate question is often about cost. The Boiler Upgrade Scheme (BUS) in England and Wales offers a flat £7,500 grant for […]
Heat pumps are generally reliable, but most problems stem from a small set of common causes Heat pumps are a relatively new technology for many UK homeowners, and it is natural to worry when something appears to go wrong. However, the vast majority of problems are simple to diagnose and often do not require a […]
Switching from Oil to a Heat Pump Saves an Average of £615 per Year on Heating Costs For homes in the UK that rely on oil heating, the annual cost of keeping warm has become a significant household expense. The Energy Saving Trust’s 2026 data provides a clear financial argument for switching to a heat […]
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. Quick Answer 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. […]
A typical air source heat pump costs £7,000–£13,000 installed, with a 7–10 year payback on gas savings If you are thinking about a heat pump but worry your garden is too small, the first question is usually about cost. The upfront price for an air source heat pump installed in a typical four-bedroom home ranges […]
Over 3 million UK flats could be technically suitable for a heat pump, according to a 2024 DESNZ analysis. An estimated 55% of flats in England are technically suitable for heat pump installation, according to a 2024 analysis from the Department for Energy Security and Net Zero (DESNZ) Heat Pump Ready programme (DESNZ, 2024). This […]
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 […]
