Start With the Draughts You Can Feel

Before you touch the thermostat, take a slow walk around your home on a windy day and hold the back of your hand near the edges of doors and windows. That cold trickle is money leaving the house. In a typical British semi, draughts can account for a surprising slice of heat loss, and they are the cheapest problem to fix.

Draught excluders are the obvious starting point, but be thorough rather than decorative. A fabric sausage at the bottom of the front door is lovely, yet the gaps that matter most are often the ones you never notice: letterboxes, keyholes, the gap between a wooden door and its frame, and the small holes where pipes and cables pass through walls. A brush or flap excluder on the letterbox and a simple keyhole cover cost very little and stop a steady stream of cold air.

• Chimneys: an open fireplace is a direct route for warm air to escape upwards. A chimney balloon or draught excluder pays for itself quickly if you rarely light a fire.
• Loft hatches: these are frequently unsealed and let warm air vanish into the roof space. A foam strip around the frame takes ten minutes.
• Trickle vents and window frames: keep ventilation where you need it, but check that old seals are not perished and gappy.
• Under internal doors: if you heat only the rooms you use, excluders on hallway and landing doors help keep that warmth where you want it.

Let the Heat Stay In

Once the draughts are dealt with, think about how your home holds warmth. Curtains do far more work than most people give them credit for. A good pair of thermal or lined curtains, floor-length, hung close to the wall on a track or pole that sits above the window recess, acts like a duvet for the glass. Close them at dusk and open them in the morning to let any winter sun in. If you have radiators beneath windows, keep curtains tucked behind the radiator rather than draped over it.

Blinds help too, especially in bedrooms and bathrooms where curtains are not practical. And if you have radiators on external walls, foil reflector panels placed behind them push heat back into the room instead of warming the brickwork. They are inexpensive, easy to cut to size, and particularly effective in older properties with solid walls.

Get Smart About Your Thermostat

The single biggest saving in most homes comes from heating less, for less time, at a slightly lower temperature. Setting your thermostat to around 18 to 21°C suits most healthy adults, and turning it down by just one degree can trim roughly a tenth off your heating bill over a season. That is a real difference for very little discomfort.

If you have a programmable or smart thermostat, use it properly rather than nudging it up and down by hand. Set it to come on about half an hour before you wake and to switch off around twenty minutes before you leave the house. A second period in the late afternoon or early evening covers the return home, and a cooler overnight setting — around 16°C — keeps the chill off without heating an empty, sleeping house.

• Time it, don't chase it: turning the thermostat up higher does not heat the house faster; it just overshoots and wastes energy.
• Use thermostatic radiator valves: keep bedrooms and spare rooms cooler and give living rooms the warmth they need.
• Match heating to occupancy: if everyone is out all day, there is no sense in heating an empty house to 20°C.

Make Your Heating Work Less Hard

A well-maintained system heats a home more cheaply than a neglected one. Bleed your radiators once a year, ideally in autumn, to release trapped air that stops them warming evenly. If radiators are hot at the bottom and cool at the top, that is the tell-tale sign. Check that furniture and long curtains are not blocking radiators, and avoid draping wet washing over them — it steals heat and can encourage damp.

If you have a hot water cylinder, make sure it wears a decent insulating jacket, and lag any exposed pipes in cold corners, garages or lofts. Insulation is quiet, invisible and relentlessly effective. Loft insulation, cavity wall insulation and simple pipe lagging all reduce how hard your boiler has to work, which matters even more as energy prices stay high.

Small Daily Habits That Add Up

Warmth is not only about the boiler. Layering clothing, keeping a throw over the sofa and wearing proper socks indoors lets you keep the thermostat a notch lower without feeling miserable. A hot water bottle at bedtime costs pennies and makes a cool bedroom perfectly comfortable.

In the kitchen and utility room, small choices stack up. Use lids on pans, batch-cook when the oven is already on, and favour the microwave or air fryer for small meals. Wash clothes at 30°C with a full load, run the dishwasher on its eco setting, and take slightly shorter showers. None of these feel like sacrifices, yet together they trim the running costs that creep up unnoticed.

None of this requires a renovation or a big spend. A few excluders, better curtains, a sensible schedule and a handful of daily habits will keep your home genuinely warm — and your winter bills noticeably kinder.