Schedule your heating around your actual day
A programmer or smart thermostat that matches your real routine — warm when you're up and home, cooler when you're out or asleep — quietly trims your biggest energy bill with zero loss of comfort.
Heating is the giant of the home-energy bill — typically more than half of it — so even small tweaks to when it runs matter far more than fiddling with lights or gadgets. The most common waste isn’t a cold house; it’s a warm, empty one: rooms heated to full temperature while everyone’s at work, school or asleep under a duvet that’s doing the job perfectly well on its own.
A schedule fixes that by aligning the heat with your actual life. The key idea is the setback rather than the off switch: dropping to around 16–17°C while you’re out keeps the building’s fabric from going fully cold, so the morning warm-up is quick and cheap, and you avoid the condensation that a stone-cold house invites. Modern smart thermostats take it further with geofencing, easing the heating back the moment the last phone leaves the house and warming up as you head home.
The honest caveat is that the savings depend on your habits and your home. If you’re already careful, the gain is modest; if your heating currently runs to a fixed all-day temperature regardless of who’s in, this is one of the biggest painless wins available. Either way it costs nothing but a few minutes of setup, and it keeps saving every winter without you lifting a finger again.
How to do it
- Sketch your real week: roughly when the first person is up, when the house empties, when everyone's back, and when you head to bed.
- On your programmer or thermostat, set the heating to reach a comfortable temperature (around 20°C) shortly before you wake and before you get home.
- Set it to ease back to a lower 'setback' temperature (around 16–17°C, not off) while you're out and overnight — low enough to save, high enough to avoid damp and a slow reheat.
- Programme weekends separately if your routine differs, and add a 'holiday' or frost-protection setting (around 10–12°C) for trips away.
- Live with it for a week and fine-tune the timings by 15–30 minutes so rooms are warm just as you need them, not an hour early.
Pro tips & pitfalls
- Don't switch the heating fully off all day in winter to 'save more' — a cold home pulls a long, hungry reheat and risks condensation and mould. A modest setback beats off-and-on. A smart thermostat (tado°, Netatmo and similar) can add geofencing so it eases back automatically when the last phone leaves.
- Pair scheduling with lowering the boiler's flow temperature — for many condensing gas boilers a flow around 50–55°C runs far more efficiently than the factory-set 70°C+.
What it's good for
Good for the planet
- Saves energy Heating only when you're home and awake removes hours of needlessly warming empty or sleeping rooms — heating is most households' single biggest energy use.
- Cuts CO₂ Fewer boiler-hours means less gas burned (or electricity drawn by a heat pump) across the whole season — a saving that repeats every winter for free.
Good for you
- Saves money Matching the schedule to your routine, rather than running the heating flat-out all day, commonly trims a noticeable slice off the winter heating bill.
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