When to Turn On the Heating? Smart Tips to Stay Warm Without Wasting Energy

As autumn sets in and chilly mornings return, many households start to wonder: when to turn on the heating? Some wait until condensation appears on windows, while others worry about rising energy bills. The good news is that with the right approach, you can make informed decisions based on comfort and efficiency.

1. What Temperature Is Ideal Before Turning on the Heating?

According to energy experts, a room temperature of 18°C (64.4°F) is usually enough to stay comfortable. However, this can vary depending on your home’s insulation, humidity levels, and who lives there (young children, elderly, etc.). If you wake up shivering despite wearing warm clothes indoors, it might be time to activate your heating system.

1.1 Real-Life Examples

Julie, living in a poorly insulated flat in southern France, notices her living room stays at 16°C every morning by late September. She runs the heating briefly in the morning only.
Marc, in a passive house in northern Alsace, doesn’t need heating until mid-October thanks to excellent insulation.

2. How to Delay Turning on the Heating

Before switching on your radiators, try using natural methods to trap heat and stay warm.

2.1 Simple Ways to Keep Warm Naturally

Close shutters or blinds at dusk to retain indoor heat.
Add layers: thick curtains, rugs, and blankets help insulate rooms effectively.
Seal drafts around doors and windows using door snakes or adhesive strips.

2.2 FAQ – Common Questions About Heating

Should I heat the bathroom all day?
No. A temperature of 22°C (71.6°F) is enough, but only during use.

Is it necessary to turn off the heating at night?
Not entirely. Lowering it to 16–17°C (60.8–62.6°F) overnight is enough for a comfortable sleep.

Is airing out the house in winter a good idea?
Absolutely. Airing rooms for 10 minutes daily removes humidity without significantly cooling down the walls.

3. Smart Heating Habits Once It’s On

Heating your home wisely can make a big difference. For example, lowering your thermostat by just 1°C can cut energy use by up to 7%. Use programmable thermostats to adjust temperatures based on your routine and avoid heating unused rooms.

Keep your living room around 19–21°C, your bedroom at 16–17°C, and set unused spaces to a lower range. Don’t forget to bleed radiators regularly and keep them unobstructed for optimal efficiency.

In short, knowing when to turn on the heating is about understanding your home’s needs—not just the date on the calendar. Monitor how you feel, prepare your home smartly, and stay warm while keeping energy costs under control.