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.
530 articles
Moving a boiler to the garage typically costs between £1,800 and £4,500, but the final bill depends on gas-supply runs and flue routes Moving a gas boiler into a garage is a common home improvement project. The cost depends on the distance from the existing boiler, the flue route, and whether the garage is attached […]
Most existing radiators can work with a heat pump, but only if their total output matches your home’s heat loss at 45°C flow temperature Many homeowners considering a heat pump ask whether their current radiators will be suitable. The short answer is that most existing radiators can work with a heat pump, but only if […]
A magnetic filter costs roughly £150–£300 installed and is recommended by most boiler manufacturers A magnetic filter is a device plumbed into your central heating pipework that captures magnetite, a black iron-oxide sludge that forms as steel radiators and pipes corrode. By trapping these particles before they reach the boiler’s heat exchanger, the filter prevents […]
A 2026 gas boiler costs roughly 50% more per kWh than an electric boiler on standard tariffs The first thing to understand is the raw cost of the fuel itself. Under the January 2026 price cap, Ofgem set the gas unit rate at approximately 7.0p per kWh and the electricity unit rate at approximately 25.0p […]
You may be wondering if you can get help paying for a new boiler. The cost of a new gas boiler installation in the UK in 2026 ranges from £1,500 for a basic combi swap to £4,500 for a system boiler with a hot water cylinder (Energy Saving Trust, 2026). Several government grants can cover […]
The cheapest boiler service appointments are typically booked between April and June UK heating demand follows a clear seasonal pattern, and so does the price of boiler servicing. Data from the Department for Energy Security and Net Zero (DESNZ) shows that the period from April to June is the lowest-demand window for boiler repairs and […]
The average household with a smart thermostat saves roughly £75 a year on heating, and smart radiator valves can add to that figure when used correctly. Many UK homeowners wonder whether smart radiator valves are a worthwhile investment or just another gadget. The core question is straightforward: do they actually reduce your annual gas bill, […]
Topping up boiler pressure once or twice a year is normal — doing it monthly costs around £80–120 extra annually in gas A sealed central heating system should only need a small top-up of water once or twice a year. If you are regularly adding water every month, something is wrong. The national average for […]
Ofgem data shows 1 in 8 UK homes reported a heating fault in the last 12 months If your radiators are cold but your taps run hot, you are far from alone. Ofgem’s 2026 Consumer Complaints and Fault Data report records that one in eight UK households reported a heating fault in the preceding year […]
Turning your boiler off in summer can save you money, but only if you understand the risks Many homeowners wonder whether switching the boiler off completely during warmer months is a sensible way to cut costs. The answer depends on your boiler type and how you heat your hot water. For most UK homes, turning […]
The typical annual running cost for a gas combi boiler in a three-bedroom semi-detached home is £870 to £1,050 as of early 2025, based on Ofgem's pric
You should have your gas boiler serviced once every 12 months by a Gas Safe registered engineer. This is a legal requirement for landlords, but for ho
Yes, heat pumps work in cold weather. Modern air-source heat pumps can extract heat from outside air at temperatures as low as -15°C to -20°C, accordi
For an air source heat pump, the most efficient flow temperature is typically between 35°C and 45°C, while your room thermostat should be set to your
No, modern air source heat pumps are not loud by typical UK household standards. Most units produce between 40 and 60 decibels (dB) at 1 metre, which
A typical air source heat pump in a UK home uses between 10 and 30 kWh of electricity per day during the heating season, according to the Energy Savin
An air source heat pump typically lasts 15 to 20 years, with the outdoor unit often requiring replacement after around 15 years. The UK Energy Saving
Smart thermostats save 2-9% on heating bills per Energy Saving Trust data. Real savings, brand comparison and when they are worth it.
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.
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.
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.
There is no ban on existing gas boilers in 2026. The Future Homes Standard applies to new builds only. What is actually changing.
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.
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 […]
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.
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. […]
Your Vaillant boiler has flashed an error code and you want to know what it means, whether you can fix it yourself, and how much a repair might cost. This article explains the most common Vaillant error codes seen in UK homes in 2026, the likely causes, and the practical steps you can take before […]
A new boiler PCB costs £250–£650 — but a repair can cost as little as £80 The printed circuit board (PCB) is the central control unit of a modern boiler, often called the “brain.” When it fails, the boiler typically stops working entirely or behaves erratically. Quick Answer A boiler PCB repair costs £80-£150, while […]
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. […]
Vaillant aroTHERM heat pumps cut household heating emissions by roughly 60% versus a gas boiler A Vaillant aroTHERM heat pump replaces a gas boiler with an air-source heat pump. It extracts heat from the outside air and uses it to heat your home and hot water. This technology reduces carbon emissions significantly compared to gas […]
Heat pump costs in 2026 start at £7,000 for an air-source system The single biggest question for any UK homeowner considering a heat pump is the upfront cost. Air-source heat pumps, the most common type, have an average installed cost between £7,000 and £13,000 for a typical UK home, according to the Energy Saving Trust […]
