Saving Energy in an Older British Home

Start With the Fabric of the House

If you live in a Victorian terrace, a 1930s semi or a stone cottage, you already know the truth that glossy brochures tend to skip: older homes were built to breathe, not to be sealed. Sash windows rattle in a north wind, floorboards have gaps you could post a letter through, and the chimney seems to whistle a tune on cold evenings. The good news is that you don't need to spend thousands to make a real difference. Most of the warmth you lose is escaping through a handful of predictable places, and most of those can be tackled with a few quiet afternoons of work and a modest budget.

The guiding principle is simple. Heat always moves from warm to cold, and it does so fastest through moving air. Stop the air, and you keep the heat. Everything below follows from that.

Draught Excluders: The Cheapest Warmth You Can Buy

Before you touch the thermostat, walk around your home on a windy day with the back of your hand held near frames, skirting boards and letterboxes. You will feel the culprits immediately.

• Sash windows: Brush seals or self-adhesive foam strips along the closing faces and the meeting rail make an enormous difference. For the gap where the two sashes meet, a slim silicone seal is neater than foam and lasts far longer.
• Front and back doors: A brush strip on the bottom, a foam or rubber seal around the frame, and a good old-fashioned fabric draught excluder sausage across the inside will stop the worst of it. A letterbox flap with a brush lining costs very little.
• Floorboards: Gaps between boards along the skirting are a common hidden leak. Press narrow strips of flexible sealant or thin foam into them, or lift a board and lay mineral wool beneath if you can.
• Chimneys: An open flue is essentially a hole in your roof. A chimney balloon or a simple draught stopper will pay for itself in a single winter, provided you never light a fire while it is in place.
• Keyholes and cat flaps: Small, easily forgotten, and each one lets a steady stream of cold air in all night.

Work through these one room at a time. None of it is glamorous, but a sealed house feels two or three degrees warmer at the same thermostat setting, which is exactly where the savings begin.

Thermal Curtains and the Discipline of Closing Them

Windows are the largest single source of heat loss in most older homes, particularly if you still have single glazing. Secondary glazing, where a slim pane or acrylic sheet is fitted inside the existing frame, is the most effective modest upgrade. But thermal curtains are the easiest and most forgiving.

Choose curtains with a close-woven lining, ideally with a separate thermal liner, and hang them on a track that overlaps in the middle rather than two poles with a gap between them. Fit them as close to the ceiling and as wide beyond the window as you can, so they cover the frame and not just the glass. Then, and this is the part people forget, close them at dusk and open them at dawn. Closed curtains trap a layer of still air against the cold glass; opened curtains let the low winter sun do its free work, especially on south-facing rooms.

Pelmet or valance boxes are unfashionable, but they are effective. If you dislike the look, a simple fabric-covered board above the track does the same job quietly.

Heating Schedules That Work With the House

A common mistake in older homes is to heat the whole house to a comfortable temperature all day, then wonder why the bill is frightening. A steady, modest programme suits the fabric of these buildings far better than dramatic swings. Aim for around 18°C in living areas, 16°C in bedrooms, and 12°C or so when rooms are empty or overnight. Each degree above 18°C adds roughly a few percent to your heating costs, so it adds up quickly.

• Heat only what you use. Close the doors of unused rooms and turn their radiators down. There is no point warming a spare bedroom all week.
• Zone your day. Warm the living room and kitchen in the morning and evening, and let the rest drift cooler.
• Give the boiler a head start. Set the heating to come on thirty minutes before you rise, and off an hour before bed. The house will hold its warmth reasonably well once sealed and curtained.
• Keep the flow temperature sensible. Older radiators often run hotter than they need to. A slightly lower flow temperature with a longer running time is gentler on the boiler and often cheaper.
• Bleed radiators at the start of the season. Cold spots at the top mean trapped air, and trapped air means wasted heat.

Smart controls and thermostatic radiator valves are genuinely helpful here, letting each room find its own level rather than being dictated by one hallway thermostat.

Small Habits, Compounded

Finally, the everyday things. Cook with lids on pans and use the oven to warm the kitchen while it works, since the heat has to go somewhere either way. Shut internal doors behind you. Let the sun in during the day and shut it out with the curtains as soon as the light goes. Dry laundry on a rack in a ventilated room rather than in a tumble dryer where you can. Keep furniture and long curtains clear of radiators so the heat can circulate.

None of these measures will fix a genuinely draughty, poorly insulated house on its own, and loft insulation and cavity or solid wall insulation remain the big-ticket wins if your budget allows. But a careful, methodical approach to draughts, curtains and heating times costs very little and delivers almost immediately. Older homes have their quirks, and there is real pleasure in learning to work with them rather than against them, keeping the character you love while keeping the warmth inside where it belongs.