Myth Busting

Absolutely. A British cold snap is not going to defeat a heat pump: a UK trial of 742 homes found they continued working at temperatures as low as -6°C.

Yes and homeowners are already proving it. In a government evaluation, 86% of users said their home felt comfortable on cold winter mornings and evenings.

Old does not mean unsuitable. Historic England has successfully tested heat pumps in 10 traditionally built properties, showing that thoughtful design matters much more than the date above the front door.

No. Underfloor heating is an excellent partner for a heat pump, but it is not an entry requirement. Many homes use radiators instead, with upgrades made only where the calculations show they are needed.

This is where heat pumps really shine. For every 1 unit of electricity used, a well-designed system can deliver around 3-4 units of heat into the home.

Much quieter than the rumours suggest. Modern units produce a steady background hum, often compared with a refrigerator, not a helicopter preparing to take off beside the kitchen window.

The starting price is normally higher, but that is not the whole story. Eligible homeowners can currently receive £7,500 or £9,000 towards the installation, which can dramatically change the comparison.

Not necessarily. One government example put annual heating costs at around £1,900 for a heat pump and £2,000 for gas. Good design, insulation and the right tariff make all the difference.

A heat pump is designed for the long haul. With proper installation and maintenance, it can typically keep a home comfortable for around 15-20 years, similar to an average boiler.

No weekly tinkering required. Like a boiler, a heat pump will normally be perfectly happy with one professional service each year.

Yes. The ground does not need to feel warm to contain usable energy. A ground source heat pump works like a fridge in reverse, collecting that low-level heat and upgrading it to provide the heating and hot water a home needs.

No, it is not like draining a fuel tank. Heat is continually replenished by the sun and rainfall, while underground temperatures generally stay above around 5°C, even during winter.

Yes. A garden does not need to be the size of a football pitch. Where horizontal loops will not fit, a borehole can be just 20cm wide and extend downwards instead.

Yes. Underfloor heating may be the dream pairing, but radiators are not ruled out. Some can stay exactly as they are, while others may need resizing to keep the home comfortably warm.

Some systems can turn the ground into a natural summer heat sink. Passive cooling can even work without running the heat-pump compressor, using the cooler ground to take the edge off hot days. Active cooling can also be an option, reversing the heat pump to provide more powerful, controlled cooling through suitable fan coils.

Often, yes. While an air source system may be collecting heat from freezing winter air, the ground remains relatively steady, giving the heat pump an easier job all year round.

Not necessarily. A well-designed system can deliver around 3-4 units of heat for every unit of electricity, turning a small amount of purchased energy into a much larger amount of warmth.

They are among the quietest heating systems available. There is no outdoor fan, and the indoor unit usually makes little more than a gentle hum.

It is possible, but very uncommon when the system is properly installed. The pipes contain antifreeze for temperatures below 0°C, have very few underground joints and are pressure-tested before being buried.

Long enough to outlive several heating systems and possibly the mortgage. Underground pipework can last 100 years or more, while the heat-pump unit itself may last around 30 years.

No sunshine? No problem. Solar panels need daylight rather than heat, which is why nearly 1.7 million UK homes are already generating their own electricity.

Yes. Clouds turn the generation down, they do not switch it off. Even under very heavy cloud, panels may still produce around 10-25% of their peak output.

Solar is not a summer-only subscription. Panels generate throughout all 12 months of the year, and crisp, bright winter days can be surprisingly productive.

No. South may be the gold standard, but east- and west-facing roofs can still perform well, especially to manage morning and evening electricity demands, although their yearly generation may be around 15-20% lower than an equivalent south-facing array.

Yes, although shade reduces generation. Optimisers or microinverters can prevent 1 shaded panel from disproportionately limiting the rest of the array. Modern panels are already highly optimised themselves, with cell-level optimisation, allowing power to bypass individual shaded cells so the rest of the panel continues to generate at maximum capacity.

No, once the sun clocks off, solar generation stops too. Add a battery, however, and electricity generated during the day can still be powering the home after dark.

There is no magic number. A typical 4.5kWp system may use around 12 panels, but the sweet spot is the amount of solar the home can use, store or export profitably.

A good solar installation should protect the roof, not create problems for it. The roof is checked first, suitable fixings are used and some flat-roof systems require no holes at all.

Usually not, British weather finally has an advantage. Rain does most of the routine cleaning, so many systems need little more than an occasional visual check. If you notice they are looking worse for wear, a gentle clean with some water by your window cleaner is sufficient.

Solar panels are one of the longest-serving additions that can be made to a home. Most continue generating for 30 years or longer, gradually producing a little less rather than suddenly stopping.

No, solar is optional. A battery can buy electricity from the grid when it is cheapest and save it for later, providing the opportunity to make substantial savings on an annual energy bill.

Definitely. When solar generation is lower, the battery can fill up using cheaper overnight electricity instead. Think of it as buying tomorrow's electricity while it is on offer today.

Only with the right backup equipment. Without an emergency-power function, a normal battery must switch off during an outage due to safety risks, even if it is sitting there 100% charged.

Usually not completely. Most home batteries store enough electricity for several hours or around a day, helping reduce grid use rather than replace it entirely. The grid remains a useful backup when demand is high or solar generation is low.

Yes. A suitably sized battery can fully power a heat pump using stored solar or cheaper overnight electricity. For example, a heat pump using 2kW could theoretically run for around five hours from a 10kWh battery.

Yes, although it may not fill it completely. A 10kWh home battery feeding a 60kWh car battery is a little like pouring a jug into a bath, but it could cover 30-40 miles for small day to day trips.

Yes, when properly designed and installed. The battery's management system watches its voltage, current and temperature 24 hours a day, quietly keeping everything within safe limits.

It is possible, but failures are rare. Reputable equipment includes several layers of protection, and professional installation ensures the battery has the right location, clearances and electrical safeguards.

Many domestic lithium batteries come with a warranty of around 10 years. The battery can continue working after that, but its usable capacity will gradually decline.

Very little. With no moving parts and app-based monitoring, a battery may be one of the least demanding pieces of equipment in the home.

Absolutely. A properly designed underfloor heating system can comfortably maintain the same 21°C room temperature as radiators. The difference is that warmth is spread evenly across the room, creating fewer cold spots and a more consistent level of comfort.

Yes. Low profile and overlay systems can be fitted over many existing solid floors, often without digging them up. With options adding as little as 15-20mm, underfloor heating can be introduced during a single-room renovation or a wider home upgrade.

Yes. A low-profile or overlay system can be installed directly over a plywood deck above the floor joists. With a build-up of as little as 15-20mm, it provides full wet underfloor heating without needing a heavy layer of screed.

More than just tiles. Stone, engineered wood, vinyl and suitable carpet can all work, as long as we know the chosen finish when designing the system. This allows us to design around how easily heat passes through it, so you can choose the look you want without sacrificing comfort.

Not when the flooring and controls are correctly chosen. The floor temperature is usually limited to around 27°C, keeping the room comfortable without slowly cooking the timber.

Yes. Each room can have its own thermostat and schedule, so the bathroom can feel cosy in the morning without turning every bedroom into a tropical greenhouse.

Not necessarily. It works "low and slow", often using water at just 30-45°C rather than creating a few extremely hot radiators, making it a brilliant partner for a heat pump and a low running cost solution.

It is possible, but rare. The hidden pipework is normally laid as one continuous, pressure-tested loop and can carry warranties of up to 50 years.

Thankfully, no. Thermal imaging can find the precise problem area, meaning a repair may involve lifting only one tile or a small section of flooring.

Very little. The buried pipework quietly gets on with the job, while the heat source, pumps and controls normally need just one annual check.

No, last night's curry is not sent on a tour of the bedrooms. Stale air is extracted from kitchens and bathrooms and released outside, with none of it recirculated around the home.

Quite the opposite. MVHR takes warmth from the outgoing air and uses it to temper the fresh air coming in, so the home gets ventilation without an icy January breeze.

Yes, but MVHR is designed to ventilate the home with the windows closed. Opening them occasionally will not harm the system, but during cold weather it allows warmth to escape and therefore defeats the energy saving purpose.

It can make a huge difference. Steam from showers, cooking and everyday life is continuously shown the door, rather than being left to settle on windows and cold surfaces.

It provides a strong defence against mould caused by everyday humidity, helping keep moisture nearer the recommended 40-60% range. It cannot, however, repair a leaking roof or damp wall.

Yes. Think of the filters as bouncers at the door, fresh air is welcomed in, while much of the pollen, dust and outdoor pollution is stopped before it reaches the rooms.

A good MVHR system should be spoken about, not heard. Well-designed systems can achieve around 25dB(A) in bedrooms, quieter than a whisper.

It can help, but it does not wear an air-conditioning cape. Summer bypass can bring in cooler night air, but it cannot cool the home below the temperature outside.

Usually not. A system averaging 40W uses roughly the same power as an old-fashioned light bulb while ventilating the entire home.

No. New builds make hiding the ductwork easier, but MVHR can be retrofitted into older properties too, especially during a renovation when ceilings and walls are already being opened.

The difference can be substantial. Filling a 50kWh battery could cost around £8 at home, compared with approximately £37 at a public fast charger or £53 at a rapid charger.

Home charging can turn the driveway into the cheapest fuel station in town. Driving 220 miles could cost around £17 in a home-charged EV, compared with roughly £45 in a petrol car.

It depends on the car's battery size and the charger. As a guide, a 60kWh EV takes around 9-10 hours to charge from empty using a 7kW home charger. Most drivers only need a daily top-up, which may take just 2-3 hours.

Yes. A dedicated charger is built to deliver high power for hours at a time and includes EV-specific protection.

Yes, electric cars would not be much use in Britain otherwise. The charger and car complete a safety check before electricity flows, and outdoor connectors are designed to cope with wet weather.

Absolutely. Outdoor chargers are made for real British driveways, with suitable equipment designed to handle temperatures from around -25°C to 40°C.

Usually. Most modern UK and European EVs speak the same charging language through the standard Type 2 connector, so changing cars does not normally mean changing the charger.

Yes, sunshine can genuinely become mileage. A smart charger can follow the available solar generation, helping turn surplus electricity into lower-cost journeys rather than simply sending it to the grid.

Occasional rapid charging is fine. Think of it as the convenient takeaway option rather than the everyday diet. The car automatically slows charging above around 80% to help control heat and protect the battery.

A properly installed charger presents a low risk. Government evidence from Norway found petrol and diesel cars were involved in around four times as many fires as electric cars - not the story most headlines would lead people to expect.