Boiler Upgrade Scheme (BUS) is a subsidy for residents of England and Wales. It allows replacing the traditional (fossil fuel or electric) heating system with the 400% efficient heat pumps.
Currently, BUS grants £7,500 for the air source heat pump or the ground source heat pump. And it pays up to £5,000 for the biomass boiler where appropriate. Your installer will apply the grant amount to the quote before payment.
For the 2026/27 year, the UK Government has allocated £400 million of funds for the Boiler Upgrade Scheme, which is compared to £295 million of the previous year. Also, the UK government estimates its expanded plan (Warm Homes) to include £2.7 billion for 2026–2030.
There is no official notice about that. On the contrary, the most recent news states the increase in funding, mentions the scheme as a part of the Warm Homes Plan, and even the list of available subsidies for 2026 contains the BUS up until December 31, 2027
Yes, but for households that qualify under the scheme and plan to switch from gas, oil, LPG, or direct electric heaters. Energy Saving Trust states that air source heat pumps average about £11,000 installation cost, thus the £7,500 grant reduces the cost upfront. Whether or not heat pump would save in long-term expenses is case-dependent because if you already have a fairly recent gas or oil boiler system, heat pumps might be more costly to operate compared to their alternatives, at least at current prices.
The boiler upgrade scheme mainly covers £7,500 for heat pumps or £5,000 for biomass boilers. However, the biomass boiler is only covered in rural areas. The applicant must be a homeowner or landlord living in England or Wales. Also, commercial property must be used for small business. The grant is only for replacing fossil-fuel based heating systems (e.g. gas, oil, LPG) or electric, and the property should have a valid EPC certificate.
Yes. As per 20th April 2026, it is still ongoing in England and Wales. At present, the grant closing date displayed on the grant page is 31st December 2027.
Not necessarily. On average, a well-maintained boiler has a 10-15 year lifespan. A 10-year-old boiler should be replaced when it becomes noisy and unreliable, the availability of spare parts becomes difficult, and bills go up due to reduced energy efficiency. Otherwise, it may be cheaper to have it serviced and wait before deciding.
If it’s gas boiler, fitting will require a Gas Safe registered engineer. Labour charge may be up to £300 per day; fitting labour only starts from £600 to £1,700, depending on job’s complexity. Installation cost is higher; according to a 2026 guide, it’s £2,400 for fitting/replacement; the average cost of installation for gas boilers, according to Energy Saving Trust, is around £3,700.
The main downsides are practical. First, there’s high cost: around £11,000 for air-source and £29,000 for ground-source systems. Secondly, you may need extra outdoor space, hot water storage tank, and possibly change radiators. Thirdly, running cost of a heat pump might be higher compared to gas boiler at current rates; additionally, finding a local expert who knows how to deal with heat pumps is sometimes tricky.
Common signs include radiators slow in heating, rising bills, leaks, unusual sounds, unpleasant odors, or repeated faults. In case of age, properly maintained gas boilers have 10–15 years lifespan, so replacing them is advisable when they get close to end of life.
Hardly anything is totally unsuitable for heat pumps; nevertheless, in case of older buildings you may encounter certain difficulties, which include lack of space for installation of outdoor unit or hot water storage tank, difficult access, or planning restrictions (listed buildings or conservation areas). For small flats/units, air-to-air type might work better than air-to-water heat pumps.
It means switching your heating 30 minutes before waking up and turning it off 30 minutes before sleeping. However, this rule isn’t mandatory; moreover, it’s not recommended for heat pumps, which generally operate most effectively when running for longer time or 24/7, along with reduced temperature setting.
According to some experts like Martin Lewis, heat pumps represent a serious choice if your old heating system is approaching its end of life and you want to switch to a lower-carbon solution. However, in most households, switching from gas boilers is unlikely to reduce your energy bills significantly, due to higher initial cost and possibly lack of reduction of expenses
Yes. In the UK, a 12-year-old boiler is already considered an old appliance. It may not be end of life yet, but since the typical 10-15 years of boiler lifespan have passed already, it is advisable to begin planning for a replacement.
It is possible for a household to be warmed to 23°C. As per Energy Saving Trust, the usual temperature range is between 18 and 21°C. Reducing the temperature in a thermostat from 22 to 21 could already result in savings.
The old rule in England about the 1-metre rule was abolished. GOV.UK and Planning Portal confirm no general 1-metre rule apart from one regarding flat-roof installations that must have the equipment at least 1 metre away from the edge of the roof.
Often cheaper in winter to run with a small setback compared to switching it off. Longer continuous operation is often better according to Energy Saving Trust since heat pumps tend to operate more efficiently this way and do not increase overall cost.
On mains gas connection, a modern condensing gas boiler will be the cheapest heating option available till now. However, the gas and fuel price fluctuation can make it worse option because of wars and international politics. Away from the main grid, a properly designed heat pump is cheaper to install and run than other heating options. Electricity charges may make it slightly more costly than newer gas/oil boilers, but with solar panels it becomes cheapest.
For a typical home, at least 6 to 10 modern panels are required, but all it depends on your electricity consumption, roof size & direction etc. According to the Ofgem, a typical household in England, and Wales uses around 2,700 kWh of electricity per annum. Moreover, According to Energy Saving Trust, a typical domestic solar system is around 3.5 kWp and usually requires 6 to 12 panels. Ideally, a 4.5 kWp system generates about 2,850 kWh per annum.
As per the latest advice from money saving experts like Martin Lewis, solar panels can add hundreds of pounds every year to the budget of every UK household. He further recommends using only an experienced and MCS-certified installer, and obtaining at least three quotations. He expects that one can earn some income through Smart Export Guarantee. Though initial investment might be a bit costly, break-even can be achieved within 10 years.
The lifespan of a 10 kWh solar battery depends on how you will use it. In general, it would allow the usage for one evening and night in an ordinary house heated by gas boilers. However, devices such as kettles, ovens, immersion heaters, electric vehicle charging, or heat pumps can quickly deplete it. Energy Saving Trust reports that 9 kWh is a usual value in houses that have heat pumps installed. Thus, a 10kWh battery may seem excessive in some houses while being quite average in other situations
In general, a solar panel should last longer than 25 years. According to the Energy Saving Trust, the solar panels’ useful life is expected to exceed 25 years; however, the inverter should be replaced after about 12 years of usage. Maintenance should prolong its work for another 20 years.
Yes, but for most UK households it is not the practical default. Experts say off-grid systems can make sense for isolated homes with no mains electricity, but living off-grid is “never like living on the mains,”. Energy consumption must be reduced, system sizing must be done correctly, and battery replacements should be budgeted for multiple times throughout the life of the system. In the case of grid-connected houses, remaining on-grid would be better and easier.
For most households, the biggest perceivable risk is buying the inappropriate system capacity or using the nu-certified installer, which can leave you out of budget. Be careful of cold calls, free health checks, and scams related to solar power systems. Solar panels are reliable; the most common problem reported by users is not with the panels but with the inverter.
Of course they do so because the daylight, though contains much less energy than solar rays, is converted into electricity by these solar PVs. Installation guidance confirms that solar systems can work well in any typical British dwelling and continue to function effectively in cloudier regions.
Heat pumps operate at lower temperatures, making it necessary to run for longer time. Cold feeling might arise from undersized radiators, incorrect heating curve, malfunctions such as blockage in circuits, or presence of sludge inside your heat pump. If you have undersized radiators, rooms simply won’t be able to heat properly.
Your energy bills grow because electricity costs more than natural gas. Running cost depends on correct size of radiators, tariffs, controls, etc. Possible reasons for high bills include incorrect heating curve, excessive hot water circulation, and abuse of boosting function. Running cost of heat pumps is slightly higher than that of modern gas or oil boilers.
This measure is taken to protect the climate rather than impose total ban on combi boilers. The point is to stop installing natural gas boilers in the future, by 2035, when alternative low-carbon sources of heat are going to become cheaper and more feasible. Meanwhile, regulations on new combi boilers are made stricter: minimum flow temperature and improved boiler modulation are required.
The “4pm rule” is a winter trick to conserve warmth by closing curtains or blinds before sunset. This is not an official rule, and 4pm is a mere approximation during winter. Energy Saving Trust recommends closing curtains and blinds only during dark winter days while opening them in sunny days.
Depends on your specific needs. Combi boilers will likely beat heat pumps on initial cost, instant hot water, and space constraints. On the other hand, heat pumps are usually preferred over boilers if you want low-carbon heat, longevity, and enough space for installation. It’s better to go with a heat pump for replacing an electric heater, LPG, oil, or a broken boiler. For a relatively new gas boiler, it’s slightly more expensive for now, but greener.
There is no universal answer. An optimally installed heat pump tends to operate continuously or at least through the day at a low heat output because such installations work best with prolonged operation rather than quick starts/stops. Avoid frequent turning on and off, e.g., every several minutes.
The answer is simple: because the thermostat can show incorrect readings depending on where it is installed. Other causes may include uneven distribution of heat from radiators or presence of draughts. The Energy Saving Trust warns that thermostats should be placed without obstructions around them.
In the UK, there is no official “20-degree rule.” In reality, it’s just a way to refer to constant low heat rather than bursts of high temperatures. According to the official recommendation, people are comfortable at 18-21°C, and heat pumps work optimally under continuous operation.
Energy consumption depends on the power used rather than the time passed. Based on the price cap of 27.69 pence per kWh for GB (April-June 2026): 1 kW of power during two hours costs around 55 pence, 2 kW – £1.11, 3 kW – £1.66. Heat pumps use energy efficiently – they produce around 2.5-4 units of heat per unit of energy consumed.
Currently, there are two relevant schemes:
(1) Warm Homes: Local Grants that are for households in privately-owned houses with energy efficiency class D-G (annual household income ≤ £36,000, except for certain postcodes and households receiving particular benefits who also qualify).
(2) Warm Home Discount – a £150 refund applied to electricity bills in Great Britain (the application process has finished; applications open in October 2026).
Yes, it surely is. According to UK recommendations, a household temperature of 18°C is optimal, and sedentary individuals in appropriate clothes won’t experience any health risks at this temperature.
According to the statistics, it’s heating and hot water, which account for over half of monthly bills. Among other electric devices, those consuming the highest share of the bill include washing machines, tumble dryers, and dishwashers (around 14%).
A heat pump produces less warmth compared to boilers, thus, requiring longer operating time, larger radiators, better settings, etc. A well-planned installation should heat your house even on colder days.
Yes, 12-hour daily operation is perfectly fine especially for heating during winters. Heat pumps are designed to function continuously for long hours, either all day, according to UK heating recommendations. In some cases, there is only a small drop (setback temperature), unlike boilers that turn on and off.
There is no single brand for everyone. Among others, Which? mentions Daikin, Mitsubishi, Vaillant, Ideal, Midea, Trianco. But the most crucial elements here are a good system design, its proper sizing, appropriate controls, and installation support. Choose an MCS-accredited installer, obtain at least three quotes, ask for calculations of heat loss in each room, expected SEER/SCOP, warranty and servicing options.
For short trips or overnight leave it turned on with lower setbacks than shutting down and reheating from scratch. Just a few degrees difference require extra energy to bring up the temperature again.
Not an official rule. This is unofficial advice concerning maintaining stable inside temperature (typically between 18–21 degrees). 20 degrees represent comfort level. Heat pumps function optimally with constant temperatures and longer runtime.
With appropriate installation and maintenance, they keep a property warm in winter. They adjust water temperature based on the outside weather conditions and manage to extract heat from the outside air at temperatures down to -15 degrees Celsius, although not as fast as gas boilers.
There is no set timeframe. They regulate the radiator water at 35–45 degrees, so low-flow temperature will take more time in cold climates. This type of system operates continuously.
The outdoor equipment requires proper ventilation. In England, pitch roofs are a bad choice. On flat roofs, ensure there is at least 1 meter space from the edge. Ensure noise is not an issue for your neighbours and comply with the building regulations.
Since electricity is more costly compared to gas, using a heat pump is generally more expensive (1 Apr–30 Jun 2026: Ofgem caps electricity price at 27.69p/kWh vs 5.93p/kWh). An efficient system can cost more in some instances because of electrical tariffs, high heat curves, too small radiators, excessive use of boost functions, incorrect tariffs or timing, economy 7 meter problems. However, you can definitely tackle this issue with solar PVs, which can significantly minimise your energy bills.
Not really, especially in areas where raining is frequent. According to the latest information, solar systems do not need to be maintained, yet owners are supposed to check its performance regularly and clean panels occasionally, i.e. every 12-18 months, in case of excessive dust or other contamination.
There are three types of home solar systems: on-grid, off-grid, and hybrid that includes battery storage. Home solar systems may provide energy to your house, deliver it back to the grid, or keep it in a battery until later use. Off-grid solar systems don’t depend on the national grid for their operation.
On-grid systems are preferable for the majority of British homes, while hybrid installations may be considered as the best option in case of battery installation. Grid-tied solar systems allow you to use your power, earn money from it during the Smart Export Guarantee program, and have access to the grid when it’s needed.