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
One in four UK homes could cut heat loss by fitting a hot water cylinder jacket, according to the Energy Saving Trust. Uninsulated hot water tanks lose 30–40% of their heat, wasting energy and money. This article compares professional installation versus DIY fitting of hot water cylinder jackets, focusing on heat savings, costs, and practical […]
DIY radiator paint can save you money, but it rarely matches the heat output of a new radiator Should you paint your old radiators or replace them? The answer depends on your radiator’s condition and your goals. A new, correctly sized radiator from a major brand such as Stelrad or Myson costs between £80 and […]
A cold radiator that takes too long to heat up or makes strange gurgling noises is a common sign of trapped air. Bleeding the radiator releases that air and lets hot water circulate properly again. Quick Answer A DIY radiator bleed costs nothing and can save up to £100 a year in wasted energy. The […]
The average heat pump quote in 2026 is £12,000–£17,000 – but a red flag appears when the price deviates more than 20% from this range If you are considering a heat pump, the first question is usually about cost. The 2026 MCS Installations Database, published by the Department for Energy Security and Net Zero (DESNZ), […]
Heat loss surveys became mandatory for most UK heating grants in 2026 If you are applying for a government grant to install a heat pump or improve your home’s insulation, you now need a certified heat loss survey before funding is approved. The Great British Insulation Scheme closed on 31 March 2026. It funded insulation […]
The average heat pump install takes 2 to 5 days for a typical UK home If you are replacing a gas boiler with a heat pump, you need to know how long the installation will take and what happens each day. The disruption is manageable but planning ahead helps. Quick Answer A heat pump install […]
How much space an outdoor heat pump unit needs in a garden An air-source heat pump’s outdoor unit needs specific clearance distances to draw in enough air and run efficiently. The MCS installation standard 020 sets the minimums at 300 mm from walls, 1 metre in front of the fan, and 1.5 metres from neighbouring boundaries (MCS 020, […]
You have installed a heat pump, or you are planning to. Your next question is likely about which electricity tariff will keep your running costs as low as possible. The energy market now offers tariffs specifically designed for heat pumps, but choosing the wrong one could cost you more than a standard deal. Quick Answer […]
A faulty air pressure switch costs £80–£250 to replace on average If your boiler has stopped working and is showing an error code, the culprit could be a failed air pressure switch. This small part is a common point of failure on modern combi and system boilers, and the repair is relatively straightforward. The average […]
The most common cause of heating system banging is trapped air or kettling A banging heating system often causes concern among homeowners. The noise is usually caused by trapped air or a condition called kettling, not a structural problem. Quick Answer Heating system banging is most often trapped air (fixable by bleeding radiators for £0) […]
Heat pump leaking water is normal during defrost cycles and condensation, but not during active heating or from pipe joints If you notice water pooling around your heat pump, you may wonder whether this signals a fault. Heat pumps produce water as part of their normal operation, but the timing and location of the water […]
The E1 error code on a boiler means low water pressure, and it is the most common boiler fault in UK homes. If your boiler display shows E1, it is telling you the system water pressure has dropped too low to operate safely. The fix is usually straightforward and does not require an engineer. Quick […]
Boiler F1 error means low water pressure, the UK’s most common boiler fault Ofgem data from 2026 shows low boiler pressure accounts for roughly 15% of all heating-related callouts in UK homes (Ofgem, 2026). The F1 code, displayed on most Worcester Bosch and similar models, signals the system’s water pressure has dropped below the minimum […]
A leaking hot water cylinder can waste a significant amount of water and may indicate a serious fault. Understanding whether to repair or replace the cylinder depends on the leak’s location and the condition of the tank itself. Quick Answer Fix a hot water cylinder leak by replacing the body (£1,200-£2,000) or repairing the component […]
A cold towel rail usually means trapped air or a balancing problem, not a broken boiler A towel rail that stays cold while the rest of your radiators heat up is a common and fixable issue. It is part of the same central heating circuit and relies on the same flow of hot water from […]
The most common reason an underfloor heating system stops working For UK homeowners, repairing a non-working underfloor heating system typically costs between £150 and £450 for diagnosis and a simple fix, but complex retrofits can exceed £1,500. The direct answer is this: if your underfloor heating has stopped working, the most likely cause is trapped […]
You notice your heat pump outdoor unit is covered in frost or ice. Your first instinct might be to panic, but a layer of frost on the coil in winter is often a sign the system is working correctly. Quick Answer A frozen outdoor heat pump unit is usually a normal defrost cycle, not a […]
The most common cause of a strange noise from a heat pump is a routine issue, not a major failure Hearing an unfamiliar sound from your heat pump can be worrying. Many homeowners assume the worst and fear an expensive repair bill. Quick Answer Most heat pump strange noises are routine, not major failures. Gurgling […]
Radiators cold at the bottom cost UK homeowners £180 per year on average The average annual heating bill for a three-bedroom semi-detached home in the UK is approximately £1,200 under the current price cap benchmark (Ofgem, 2026). When sludge builds up in radiators, heat output can drop by up to 30%, adding roughly £180 to […]
A boiler pilot light that keeps going out is a common frustration, but it is usually caused by a small number of specific faults. Understanding what these are can help you decide whether you can resolve the issue yourself or need to call a professional. Quick Answer A boiler pilot light that keeps going out […]
If your boiler keeps losing pressure, the cause is almost always a leak or a faulty expansion vessel When a boiler loses pressure, water is escaping the sealed heating system or the expansion vessel is no longer absorbing pressure changes correctly. The two most common causes are a slow leak somewhere in the pipework or […]
LG Therma V heat pumps cost between £7,000 and £14,000 installed in 2026 The installed cost for a typical 3-bedroom home ranges from £7,000 to £14,000, depending on system complexity and house size. The LG Therma V R290 monobloc model is typically priced at the lower end of this range. The LG Therma V Split […]
The Octopus Cosy 6 is a single-unit air source heat pump, not a hybrid system, and costs £2,500–£4,500 after the £7,500 grant The Octopus Cosy 6 is a monobloc air source heat pump (ASHP), meaning it is a single outdoor unit that replaces a gas boiler entirely. It is not a hybrid or bivalent system […]
Samsung EHS is one of the most installed air-source heat pump brands in the UK, with over 15,000 units on the MCS register as of early 2026 (Source MCS Installations Database, 2026) The Samsung EHS (Eco Heating System) is an air-to-water heat pump available as either a monobloc or split system, designed for UK homes. […]
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 […]
