OK, summer isn’t exactly over just yet for 2025. It’s only September and we hope we’ll have some warmer days yet to come. But you’ve probably spotted some people wack out a few extra layers this week – and some might have even been considering switching on the central heating. However, is it premature to fiddle with the thermostat just yet?
Industry specialists have now shared their guidance on the optimal moment to fire up the heating, alongside some budget-friendly methods to maintain warmth and comfort in our homes as we transition into autumn and winter.
“Whilst there isn’t an optimum time to switch heating on, once temperatures are below 15°C, often around October or November, it is best to turn the heating on as we feel the chill more,” recommends Jess Steele, heating technology expert at BestHeating.
“By the end of the month, even the hardiest among us will [likely] have our heating on to keep warm, as temperatures are predicted to drop further.”
Nevertheless, it ultimately boils down to individual choice. “There isn’t a one-size-fits-all answer to when you should turn on your heating, as it varies from person to person,” says Stephen Hankinson, managing director at Electric Radiators Direct.
“The efficiency of your heating system can also depend on the type of house you live in newer homes with better insulation may hold heat more effectively, while older houses might require more regular heating adjustments to remain comfortable.”
Naturally, switching on the heating translates to steeper energy bills. So if you’re worried about your energy costs this autumn and winter, it could be worthwhile browsing around to discover whether you can secure a superior deal elsewhere.
“If you’re contemplating changing energy supplier, reduced rates for new customers can result in savings,” Amy Knight, a personal finance expert at NerdWallet UK, advises. “But, take note of when the introductory period ends to avoid a nasty shock when your bill jumps up again.
“If you’re already on a fixed deal that’s more expensive than the price cap, it may be worth seeing if you can switch to a cheaper variable tariff or a cheaper fixed deal. If you do decide to leave your current fix, check to see if you need to pay any penalty fees.”
Mitchell Wray, an energy expert at National Insulation Supplies, suggests: “It is also worth looking out for ‘free energy’ or lower cost energy sessions run by your supplier. Try batch cooking, running laundry or hoovering during these times.”
Applications are accessible that can assist you in monitoring your energy expenditure more efficiently. “Use energy usage apps or monitor bills closely to compare monthly expenses,” Rob Nezard, the managing director of UKRadiators.com, recommends.
“Set monthly budget goals and keep an eye on average energy use and adjust heating schedules to stay within budget.”
Before the biting cold weather arrives and you switch on the heating, it’s wise to conduct a few quick checks on your heating system. (Always seek advice from qualified specialists if you spot any issues with gas and electricals).
“Turn it on for a few hours to test, whether that means switching on your boiler or using electric radiators,” suggests Hankinson. “This will give you ample time to identify any problems and have them fixed well before winter sets in.”
The approach to autumn is also an ideal time to bleed your radiators (seek professional advice if you’re uncertain how to do this). “You’ll need a bleed key, cloth and towel to place underneath whilst you do this in case of spillage,” Steele explains.
“Once this has been completed, the pressure gauge on the boiler may have dropped so if that’s the case top it back up. It should be between 1 to 1.5 when the heating is turned off and 1.5 to 2 when in use.”
During frosty evenings, keep curtains and doors shut to stop heat from escaping. “Seal any cracks in your windows, to ensure your home is fully insulated,” Wray recommends.
“Think cosy and keep the curtains closed during the day where possible to trap in heat.
“Thermal curtains are designed for retaining heat as they add an extra layer of insulation, making these a great choice for combating draughty windows,” Hankinson points out.
“A hot water bottle is ideal for cosy evenings and costs around 6p to fill by boiling the kettle. For colder nights, a heated blanket is great. Running one for three hours at full power only costs about 9p.”
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