Picture stepping into a living space on a frosty January morning that feels warm and calm, yet the boiler is running less than last year. When people ask us how to make your home more energy efficient for 2026 and beyond, we often start with that image. It is not only about clever tech or expensive kit. It comes down to how the building is put together, the glass that frames the view, and the small habits that happen every day.
Energy costs have risen sharply, and UK climate targets are tightening, so every kilowatt now matters for both the bill and the planet. A home that wastes less energy is cheaper to run, more comfortable in winter and summer, and often more attractive to buyers. For anyone planning an extension, renovation or new build, energy performance is now part of good design rather than a nice extra.
“The greenest kilowatt-hour is the one you never use.”
In this guide we walk through simple habits and longer-term upgrades that cut energy use without sacrificing comfort. We move from no-cost daily changes to heating controls, insulation, glazing, and modern systems such as heat pumps and solar panels. At Minima Sliding, we specialise in ultra-slim sliding doors with strong thermal performance, so we see every day how thoughtful design choices can support comfort and low running costs in 2026 and beyond.
Before spending a pound on new equipment, it helps to look at how energy is used from hour to hour. A typical UK household loses money through small habits like leaving devices on standby, boiling too much water, or taking long showers. On their own these seem minor; together over a year they add up.
These simple changes are fast to put in place and need no building work. They also set a lower baseline for energy use, so any later investment in insulation or high-performance glazing works harder.
Electrical devices are one of the easiest places to cut waste. Many homes now have more than 26 appliances drawing standby power. Televisions, games consoles and microwaves all sip energy even when no one is using them.
Lighting is another quick win. Replacing old halogen or incandescent bulbs with LED bulbs can cut lighting energy use by up to 90 per cent. A simple house rule to switch lights off when leaving a room adds a few more pounds of saving each year with almost no effort.
Hot water is a quiet driver of energy bills. Keeping showers to about four minutes can save a typical household around £45 a year, while swapping one weekly bath for a short shower can add roughly £10 more without feeling like a big sacrifice.
In the kitchen, many tiny choices affect home energy efficiency over a full year. Fitting a cheap aerator on the kitchen tap lowers water flow without changing the feel of the stream and can save about £20. Boiling only the water actually needed in the kettle trims roughly £10 from bills and speeds up drinks.
Laundry and dishwashing habits matter too:
For most UK homes, heating is the largest slice of the bill, so how to make your home more energy efficient often starts with the boiler, radiators and controls already in place. Small, careful changes to settings can bring large savings without making the house feel cold.
By using thermostats, timers and radiator valves well, it is possible to heat rooms only when and where they are needed. Simple maintenance and basic insulation of hot water systems then stop that heat slipping away.
The main room thermostat is one of the most powerful tools in the house. Turning it down by just one degree can save up to about £80 a year and cut carbon emissions by roughly 360kg. Most people barely notice the change, especially if it is made during a mild spell and then left alone.
Radiators in unused rooms do not need to run at full power. Turning thermostatic radiator valves (TRVs) down in guest rooms or box rooms stops money being spent on empty space. Heating timers should match real life as closely as possible: warmth comes on shortly before people wake or return home and turns off when the house is empty. Hot water can be set to heat only at certain times of day rather than around the clock.
Keeping radiators clear also helps. Large sofas, cabinets or piles of drying clothes in front of them block warm air from circulating into the room. Leaving space around radiators lets paid-for heat move freely and do its job.
Once the boiler has produced heat, it pays to keep that warmth indoors. Closing curtains or blinds at dusk can cut heat loss through windows by around 17 per cent, especially on older single- or early double-glazed windows.
If the home has a hot water cylinder, checking its jacket is a quick win. Upgrading a thin 25mm cover to an 80mm British Standard jacket can save about £40–£45 each year. Adding simple foam insulation to hot water pipes reduces heat loss as water travels to taps, so hot water arrives faster and less is wasted running down the drain.
A faulty boiler or control system often pushes people toward portable electric heaters, which are much more expensive to run. Any issue with the main heating should be reported or repaired as soon as possible. Private and social landlords have legal duties to keep heating and hot water in good order, while homeowners should always use Gas Safe registered engineers for boiler work to keep both safety and efficiency on track.
Daily habits and good controls are powerful, but the building itself sets the limits for long-term energy performance. If warmth leaks through the roof, walls, floors or glazing, the boiler has to work harder every day. Planned upgrades make the biggest difference, especially for renovations, extensions and new builds.
By improving insulation, sealing draughts, choosing high-performance glazing and updating heating systems, you can cut the heat demand of a home to a much lower level and reduce running costs year after year.
“Good fabric and glazing let you enjoy light and views without living in a fridge.”
Heat loss through gaps and thin construction is often the main reason a house feels chilly and expensive to run. Professional draught-proofing around windows, doors, floorboards and chimneys can save a typical household about £85 a year for an outlay of roughly £250. Simple DIY items like door draught excluders help too, but a thorough job goes further.
Loft insulation is usually one of the best-value upgrades; without it, up to a quarter of a home’s heat can escape through the roof. Many homes built between the 1920s and 1990s also have cavity walls that can be filled with insulation, while older solid-walled homes may benefit from internal or external wall insulation. Ground floor insulation, especially on suspended timber floors, cuts cold draughts and makes rooms feel warmer underfoot.
Spray foam insulation is often heavily promoted, but it needs real care. It can reduce ventilation, hide roof problems and make future repairs or even mortgages harder. Before going ahead with spray foam, get independent advice from a chartered surveyor registered with RICS and compare it with more traditional options such as mineral wool.
Glazing plays a huge part in home energy efficiency when large openings and wide views are part of the brief. Older patio doors or standard double glazing can let a lot of heat escape, especially on exposed sites. Modern glazing systems are designed to hold warmth in while still filling spaces with natural light.
Triple-glazed sliding doors with thermally broken frames provide far lower heat loss than older designs. slim frame designs reduce thermal bridges around the glass and give a higher proportion of insulated glazing within the opening. This matters for extensions that aim to blur the line between indoors and outdoors without leaving the kitchen freezing in January.
At Minima Sliding we focus on custom-made sliding doors with some of the narrowest frame sizes in the UK. Our ultraline systems combine high-performance glass, advanced seals and refined frame design so wide openings feel light and open yet still support strong thermal performance. When glazing is planned from the early design stages of a renovation or new build, it becomes a core part of the energy strategy rather than a weak spot.
Our sliding doors achieve an overall u-value of 1.2 with double glazing and 0.7 with triple glazing. The minimum u-value required for building regulations compliance is 1.2.
With u-values, the lower the number, the better the u-value. Our door system goes above and beyond the requirements.
For some homes, how to make your home more energy efficient will eventually mean upgrading the heating plant itself. Modern condensing gas boilers are far more efficient than older non-condensing models, often turning more than 90 per cent of fuel into useful heat. If the existing boiler is at the end of its life, moving to a high-efficiency model can trim bills straight away.
Heat pumps go a step further by moving heat rather than creating it from combustion. Air-source and ground-source heat pumps can deliver several units of heat for each unit of electricity used, which makes them attractive in well-insulated homes. Solar photovoltaic panels generate electricity on site and reduce reliance on the grid, especially when paired with daytime loads such as hot water heating or car charging.
When considering heat pumps or solar, use installers certified under the Microgeneration Certification Scheme (MCS). Owners of older or listed homes should also consult guidance from Historic England before major changes. Alongside these bigger steps, choosing new appliances with high energy ratings keeps background electricity use as low as sensible.
Knowing how to make your home more energy efficient is only part of the story. Paying for the work, understanding rights and rules, and picking the right people to carry out upgrades matter just as much.
“A well-planned project can save you money for decades; a rushed one can cost you for just as long.”
By checking what help is available, reading up on standards, and using certified specialists, it becomes much easier to move from ideas on paper to a warm, well-running home.
The upfront cost of insulation, glazing or new heating can feel daunting, especially when several upgrades are needed at once. Grants or support schemes can soften that first hit. Central government and local councils often run programmes that help pay for measures such as loft insulation, wall insulation or modern boilers.
Some large energy suppliers also have duties to help certain households, particularly those on lower incomes or specific benefits. The details change from time to time, so it is wise to check the GOV.UK website and local council pages for the latest offers. A professional energy assessment or EPC report can highlight which measures will pay back fastest in a specific home, making it easier to target any funding.
For renters, learning how to make your home more energy efficient can be tricky because changes usually need approval. Tenants need consent from their landlord before fitting insulation, changing heating systems or installing new glazing. However, landlords have clear legal duties around heating, hot water and basic warmth.
Privately rented homes in England and Wales generally need an EPC rating of at least band E unless they are registered as exempt. EPC ratings and any exemptions can be checked online through GOV.UK. Social housing landlords also have to keep properties warm enough for reasonable living. If a tenant is worried about standards or nervous about retaliation, groups like Citizens Advice can offer guidance before any formal complaint is made.
Even the best product will not perform well if it is fitted badly. For gas boilers, only engineers on the Gas Safe Register should carry out work. Heat pumps and solar panels are best handled by firms approved under the MCS scheme. For glazing, insulation and general building work, membership of recognised trade bodies can add peace of mind.
When gathering quotes, aim for at least three so prices and designs can be compared like-for-like. Helpful checks include:
If something goes wrong with completed work, first raise the issue with the trader directly, then with any trade body or certification scheme they belong to. The Citizens Advice consumer service can give clear guidance on rights and possible next steps if a dispute appears.
Cutting home energy use is rarely about one grand gesture. It is the mix of simple routines, smart controls and well-chosen upgrades that shifts the balance. Turning devices off at the wall, shortening showers and setting heating to match real life start trimming bills straight away and build good habits for everyone in the house.
For deeper change, the building itself needs attention. Insulation, draught-proofing, modern heating systems, solar panels and high-performance glazing all lower the amount of energy a house needs to stay comfortable. For extensions, renovations and new builds, this is a chance to design in comfort, daylight and low running costs from the first sketch.
In our work at Minima Sliding, we see how slim-frame, high-performance sliding doors can deliver wide openings, strong thermal performance and calm, light-filled rooms at the same time. Start with the easiest wins, then plan the bigger steps with care, and a draughty, expensive house can turn into a warm, efficient home ready for many winters ahead.
Energy efficiency raises a lot of practical questions, especially when plans for extensions or upgrades are on the table. Here we answer a few of the ones we hear most often when people ask how to make your home more energy efficient.
The fastest wins come from habits rather than hardware. Turning appliances off at the plug instead of leaving them on standby can save around £45–£55 a year. Dropping the thermostat by one degree can add up to about £80 of saving. Switching to LED bulbs, keeping showers to around four minutes and closing curtains at dusk all help cut waste. Put together, these steps start to show how to make your home more energy efficient while larger plans, such as insulation or new glazing, are still on the drawing board.
Savings depend on where the home is starting from and which measures are chosen. Professional draught-proofing can save around £85 each year, while upgrading a thin hot water cylinder jacket can add about £40–£45. When combined with thermostat changes, better appliance use and simple pipe insulation, many households see £200–£400 or more shaved from annual bills. Larger upgrades such as heat pumps or solar panels can bring higher long-term savings, and an EPC report can give house-specific guidance on which measures to tackle first.
High-performance sliding doors can be a sound investment, especially where glazing covers a large part of an extension or rear wall. Modern triple-glazed systems with slim, thermally broken frames greatly reduce heat loss compared with older patio doors. They admit generous natural light while helping rooms stay warmer in winter and cooler in summer. At Minima Sliding, our custom-made ultraline doors are designed to combine strong thermal performance with refined, contemporary lines. For many projects they are a long-term investment in comfort, running costs and property value.