Making your home more energy efficient doesn't have to mean major building work or a huge upfront spend. In fact, some of the most effective improvements are simple, affordable, and can be tackled over a weekend. By focusing on draught-proofing, insulation, and better heating controls, you can lower your energy bills and reduce your carbon footprint – all while keeping your home warmer and more comfortable.

Start by stopping the draughts

Draughts are one of the quickest and cheapest energy losses to fix. Cold air sneaking in around doors, windows, and even keyholes forces your heating to work harder. A thorough walk-around on a windy day will soon reveal the culprits.

• Doors and windows: Fit brush or wiper seals to external doors, and use self-adhesive foam or rubber strips around window frames. Letterbox flaps and keyhole covers cost just a few pounds.
• Chimneys and fireplaces: If you don't use an open fire, a chimney balloon or sheep's wool draught excluder stops warm air escaping. Never block a flue that serves a working appliance.
• Floorboards and skirting: Gaps between floorboards and at the base of skirting boards can be sealed with flexible filler or silicone.

For a typical UK home, draught-proofing can save around £30 a year on energy bills – and it's a job most DIYers can complete in an afternoon. Just remember to maintain ventilation for any gas, oil, or solid fuel appliances.

Top up your loft insulation

Heat rises, and if your loft is under-insulated, you're effectively heating the sky. Current building regulations recommend a minimum of 270mm of mineral wool insulation. Many older homes have just 100mm or less, so topping up is a straightforward win.

• Measure what you have: Use a ruler or tape measure to check the depth between joists. If it's less than 270mm, add another layer crosswise.
• Choose your material: Mineral wool rolls are inexpensive and easy to lay. Sheep's wool and recycled plastic alternatives cost more but are eco-friendly and pleasant to handle.
• Don't forget the hatch: Insulate the loft hatch with a draught-proof seal and a rigid insulation board glued to the back.

Proper loft insulation can save £130 to £300 a year depending on your home and heating type. If your loft is hard to access or you have a flat roof, it's worth calling in a professional. Many energy suppliers and local councils offer grants or discounted schemes, so it's always worth asking.

Upgrade to smart heating controls

Heating accounts for over half of your energy bill, so controlling it precisely is powerful. Smart thermostats and thermostatic radiator valves (TRVs) let you heat only the rooms you use, at the times you need.

• Smart thermostats: These learn your schedule and can be controlled from your phone. Geofencing turns the heating down when you leave, and weather compensation adjusts flow temperature based on outside conditions.
• TRVs: Fit these to every radiator except the one in the room with your main thermostat. Set them lower in bedrooms and unused rooms, and higher in living areas.
• Zoned heating: If you have a large home, motorised valves can split upstairs and downstairs into separate zones, each with its own schedule.

Good heating controls can cut your heating bills by 8–10%, saving around £75 a year for a typical household. Start simple: set a schedule that matches your routine, then add smart features as you get comfortable.

Don't overlook hot water and radiators

Even with good insulation and controls, small tweaks to your hot water system and radiators make a difference.

• Cylinder jacket: If you have a hot water cylinder, fit a 75mm thick insulating jacket. They cost around £20 and save roughly £40 a year.
• Pipe lagging: Insulate exposed hot water pipes, especially in unheated areas like garages or lofts. Foam tubes are cheap and easy to slide on.
• Bleed radiators: Trapped air stops radiators heating fully. Bleed them annually, and consider fitting reflective foil behind radiators on external walls to bounce heat back into the room.

These measures are inexpensive, quick, and add up to meaningful savings.

Small habits that add up

Technology and insulation do the heavy lifting, but your daily habits matter too. Simple changes cost nothing and can trim another 5–10% off your bills.

• Turn down the thermostat: Reducing your main thermostat by just 1°C can save around £60 a year. Wear a jumper and set it to 18–19°C.
• Shorter showers: A four-minute shower uses far less hot water than a bath. Fit a low-flow shower head for extra savings.
• Wash at 30°C: Modern detergents work well at low temperatures, and washing full loads uses less energy per item.

Getting help and planning your next step

You don't have to do everything at once. Start with the cheapest, easiest measures – draught-proofing and radiator bleeding – then work up to loft insulation and smart controls. If unsure where to begin, a professional energy assessment can pinpoint the biggest opportunities in your home.

Government-backed schemes like the Energy Company Obligation (ECO) and local authority grants often fund insulation and heating upgrades, especially for lower-income households. Check what's available in your area before spending your own money.