A common debate among homeowners is whether it’s cheaper to leave the heating on all day at a low temperature or to use a timer to control your heating system. Let’s break down the facts to help you make the most energy-efficient choice for your home.

The Myth of Constant Heating

Some people believe that keeping the heating on at a low level throughout the day will save money by avoiding the need to reheat a cold home. However, this is a myth. Homes naturally lose heat over time, especially if they are not well-insulated. Keeping the heating on all day means your system works constantly to maintain a set temperature, leading to increased energy consumption and higher heating bills. Let's not get into the second law of thermodynamics ( we're not Professor Brian Cox). However, in very, very simple terms, according to the second law of thermodynamics, heat energy naturally flows from hotter areas to cooler ones until everything reaches the same temperature.

Timers Are More Efficient

Using a programmable timer or smart thermostat like Hive allows you to heat your home only when necessary. For example, you can set the heating to come on in the morning before you wake up and in the evening before you return home. This ensures energy is used efficiently, as the heating system only operates when it’s needed. Modern boilers and smart thermostats are designed to heat your home quickly, so there’s no need to keep the heating on throughout the day to maintain comfort.

Insulation Is Key to Savings

Whether you use a timer or leave the heating on, insulation plays a critical role in saving energy. Properly insulating your home—through draught-proofing doors, windows, and lofts—prevents heat loss and helps your heating system work more efficiently. Good insulation reduces the amount of energy required to maintain your home’s temperature, further lowering your heating costs.

Conclusion

In most cases, using a timer is the more cost-effective and energy-efficient option. By heating your home only when needed, you reduce unnecessary energy use. Pairing a timer with proper insulation and a modern heating system will help you lower your winter heating bills and keep your home warm without waste.