Is it cheaper to leave heating on low all day?

Is It Cheaper to Leave the Heating On Low All Day?

It’s a common debate, especially during colder months: should you leave your heating on low all day, or turn it on only when you’re home? Many people believe keeping the thermostat at a constant low temperature prevents the "shock" of reheating a cold house and saves energy. While that sounds logical, most experts say otherwise.

Leaving the heating on continuously, even at a low setting, typically uses more energy over time. Think of it like a leaky bucket—if your home loses heat constantly, your system has to keep working to replace it. Modern insulation and efficient boilers mean your house can warm up relatively quickly when needed, making timed heating a smarter choice.

The key to saving money isn’t constant heat, but smart control. Using a programmable thermostat to heat your home only during the hours you're there—like before you wake up or return from work—ensures comfort without wasting energy. For example, setting the heat to come on half an hour before you get up avoids a freezing morning without running the system all night.

Of course, every home is different. Poorly insulated houses might lose heat faster, making them harder to reheat efficiently. But for most households with decent insulation, the "on only when needed" approach wins both in cost and efficiency.

In short, resist the urge to leave your heating running all day. A well-timed schedule not only keeps your energy bills lower but also reduces your environmental footprint. Comfort and savings don’t have to be mutually exclusive—with the right settings, you can enjoy both.