Boilers & Heating
Smart thermostats, real savings or hype?
Smart thermostats save 2-9% on heating bills per Energy Saving Trust data. Real savings, brand comparison and when they are worth it.
Boilers & Heating
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.
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Latest Boilers & Heating Articles
Boilers & Heating
Can you keep your radiators with a heat pump?
Most heat pump installs change three to six radiators, not the whole house. Which stay, which go, and how to push back on installer scope.
Boilers & Heating
Why your heat pump quote is £14,000
Heat pumps cost an average £13,431 before grants. The unit is only 30-40%. What you are paying for, why quotes vary, and the red flags.
Boilers & Heating
0% VAT on heat pumps ends in March 2027
0% VAT on heat pumps, solar and insulation ends 31 March 2027. On a £14,000 install that is £2,800 in real money. Lead times matter.
Boilers & Heating
The 2026 gas boiler ban is not a ban
There is no ban on existing gas boilers in 2026. The Future Homes Standard applies to new builds only. What is actually changing.
Boilers & Heating
Heat pump grants going up to £9,000 in July
From July 2026 the Boiler Upgrade Scheme grant rises to £9,000, but only for off-gas-grid homes. Here is who qualifies and what to do.
Boilers & Heating
Will hydrogen boilers replace gas in the UK?
No, hydrogen boilers will not replace gas boilers in UK homes on a mass scale, with the government now prioritising heat pumps over hydrogen for domestic heating (GOV.UK, 2026). The Department for Energy Security and Net Zero confirmed in its 2026 policy decision that hydrogen will play a limited role in heating, primarily for industrial […]
Boilers & Heating
What is the UK Clean Heat Market Mechanism?
The UK Clean Heat Market Mechanism (CHMM) is a government policy requiring boiler manufacturers to sell a rising percentage of heat pumps each year, starting at 4% in 2026, or face a penalty of £3,000 per missing heat pump sale (GOV.UK, 2026). This mechanism aims to drive the shift from fossil-fuel boilers to low-carbon heating […]
Boilers & Heating
Can I keep my old boiler past 2035 in the UK?
The short answer is yes, you can keep your existing gas boiler past 2035, but you will not be able to buy a new standalone fossil-fuel boiler to replace it after that date. The UK government confirmed in its Heat and Buildings Strategy that from 2035, all new heating system installations must be low-carbon, effectively […]
Boilers & Heating
What is the lifespan of an air source heat pump in the UK?
An air source heat pump typically lasts between 15 and 20 years in the UK, according to the Energy Saving Trust (Energy Saving Trust, 2026). This is comparable to the lifespan of a modern gas boiler, which averages 10 to 15 years. The exact lifespan depends on installation quality, usage patterns, and regular maintenance. Key […]
Boilers & Heating
Hybrid solar PV and heat pump, does it pay back in the UK?
Hybrid solar PV and heat pump systems can pay back in the UK within 8–14 years, depending on your property and usage patterns, according to the Energy Saving Trust (Energy Saving Trust, 2026). Combining solar panels with a heat pump typically cuts annual heating and electricity bills by 40–60%, though payback depends on upfront costs, […]
Boilers & Heating
Can a heat pump replace storage heaters in a UK flat?
The short answer is yes, a heat pump can replace storage heaters in a UK flat, but the cost and practicality depend heavily on your flat’s insulation, space, and heating system type. According to the Energy Saving Trust, a well-installed air source heat pump typically costs between £7,000 and £13,000 to install, though the Boiler […]
Boilers & Heating
Do I need planning permission for an outdoor heat pump unit?
Yes, most air source heat pumps in England are permitted development and do not need planning permission, provided they meet specific size, siting and noise criteria set by the Ministry of Housing, Communities and Local Government, 2026. Key Takeaways 1Most air source heat pumps are permitted development if under 0.6m wide. 2Units must be at […]
Boilers & Heating
Best heat pump for a Highland Scottish home in 2026
The best heat pump for a Highland Scottish home in 2026 is an air-to-water heat pump with a minimum Seasonal Coefficient of Performance (SCOP) of 3.5, specifically designed for low-temperature operation in exposed conditions. Energy Saving Trust confirms that modern heat pumps can effectively heat homes in Scotland, even in temperatures as low as -15°C […]
Boilers & Heating
Air source heat pump in a Welsh stone cottage, is it viable?
The most-searched figure is that an air source heat pump (ASHP) can cut heating costs by up to 30% versus oil in a typical Welsh stone cottage, but viability depends heavily on insulation levels, according to the Energy Saving Trust (Energy Saving Trust, 2026). Key Takeaways 1ASHP can cut heating costs by up to 30% […]
Boilers & Heating
Does underfloor heating work well with a heat pump in the UK?
Yes, underfloor heating works exceptionally well with a heat pump in the UK, and it is the most efficient pairing available for most homes. Heat pumps operate most effectively at lower flow temperatures (35–45°C), which underfloor heating is built to use, unlike radiators which typically require 60–70°C. The Energy Saving Trust confirms that underfloor heating […]
Boilers & Heating
Why is my boiler kettling?
Boiler kettling is usually caused by limescale or sludge buildup inside the heat exchanger, restricting water flow and causing localised overheating, the most-searched fix costs between £150 and £500 depending on the cause (Energy Saving Trust, 2026). Key Takeaways 1Powerflush costs £300–£500 for sludge-related kettling in a three-bed home. 2Scale inhibitor fitting costs £60–£150 to […]
Boilers & Heating
How do I fix low boiler pressure in the UK?
To fix low boiler pressure in the UK, you simply repressurise the system using the filling loop, which should bring the gauge back to between 1 and 1.5 bar. The Energy Saving Trust confirms that low pressure is the most common boiler fault and is usually a quick DIY fix (Energy Saving Trust, 2026). Key […]
Boilers & Heating
Is boiler cover insurance worth it in the UK in 2026?
Boiler cover insurance is not worth it for most UK homeowners in 2026, as the average annual premium of £275 exceeds the typical cost of a single repair callout, which averages £180 according to GOV.UK, 2026. For those with a modern, well-maintained boiler, paying out-of-pocket for occasional repairs is cheaper than insurance. Key Takeaways 1Average […]
Boilers & Heating
Is a magnetic boiler filter worth fitting in a UK home?
Yes, a magnetic boiler filter is worth fitting in most UK homes with a combi or system boiler because it traps magnetite sludge that reduces efficiency by up to 6% annually, according to the Energy Saving Trust (Energy Saving Trust, 2026). Key Takeaways 1Magnetic filters trap magnetite sludge that cuts boiler efficiency by up to […]
Boilers & Heating
What is a power flush and do I need one before a new boiler?
You may need a power flush before a new boiler if your heating system contains sludge, debris, or corrosion, as it clears blockages to protect the new appliance and maintain its warranty. A power flush is a high-flow, chemical-assisted cleaning process that removes accumulated dirt, rust, and scale from central heating pipework and radiators. The […]
Boilers & Heating
What is the difference between air-to-air and air-to-water heat pumps?
An air-to-water heat pump heats radiators and hot water, while an air-to-air heat pump heats air blown into rooms via fan units and cannot provide hot water. According to the Energy Saving Trust, air-to-water systems typically achieve a COP of 2.5 to 3.0, meaning they produce 2.5 to 3 kWh of heat for every 1 […]
Boilers & Heating
Can I install a heat pump in a UK flat or apartment?
Yes, you can install a heat pump in many UK flats and apartments, but it is not always straightforward. According to the UK government, air-source heat pumps are the most common type for flats, with around 60% of installations in multi-occupancy buildings being air-to-air or air-to-water systems (GOV.UK, 2026). The key deciding factor is whether […]
Boilers & Heating
Should I pair a battery with my heat pump?
No, pairing a battery with a heat pump is not essential, but it can reduce your annual electricity costs by around 20-30% if you have a time-of-use tariff. According to the Energy Saving Trust, a typical air-source heat pump uses around 4,000 kWh per year for a three-bedroom home (Energy Saving Trust, 2026). Whether a […]
Boilers & Heating Glossary
Boilers & Heating FAQ
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.
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Boilers & Heating
Air source heat pump vs gas boiler costs (2026)
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 […]
Boilers & Heating
Hydrogen ready boiler worth it (2026)
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, […]
Boilers & Heating
Ground Source vs Air Source Heat Pumps for UK Homes
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 […]
Boilers & Heating
Boiler Upgrade Scheme how to apply (2026)
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 […]
Boilers & Heating
Smart Thermostats That Actually Reduce Your Heating Bills
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, […]
Boilers & Heating
How Much Does a New Boiler Cost to Install in 2026?
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 […]