Switching on the heating for the first time following summer is something everyone attempts to delay, particularly in light of soaring energy costs.

Ofgem have confirmed a rise in the price cap this year, stating: “From 1 October to 31 December 2025 the price for energy for a typical household who use electricity and gas and pay by Direct Debit will go up by 2% to £1,755 per year. However, compared to the start of 2023, this is £625 (26.3%) lower than when the energy crisis was at its peak.

“For a typical household, their energy bills will increase by £2.93 a month or £35.14 per year. This is 2.2% per year higher than the price cap set for the same period last year, from 1 October to 31 December 2024 (£1,717).”, they added.

Therefore, many homes will be looking to be more savvy with their energy use, and they may be delaying turning on their heating for as long as possible to cut down on their bills.

However, it’s an approach one property specialist has delivered a grave warning against.

Speaking exclusively to Express.co.uk last year, Clive Holland, broadcaster on Fix Radio and former presenter of the BBC’s Cowboy Trap said: “Many will leave it as late as possible to put their heating on due to an increase in utility bills from October. This really concerns me when it comes to looking after your health.”

He added: “In particular, the elderly. The only real benefit to delaying your heating switch-on is saving money on your energy bills.”

Regarding the precise date heating should be activated, Clive referenced NHS guidance suggesting it should occur when outdoor temperatures fall beneath 15C.

He continued: “The NHS advises to put the heating on for health reasons. However, depending on your age and general health, some people feel the cold more than others. Many people will base their decision more than ever on finances.”

However, Clive cautioned anyone considering this approach that “the negative impact far outweighs the positive”.

He explained: “The most common problem to expect if a home is not adequately heated during the colder months is from damp, which increases the risk of dangerous mould spores.

“The risk of frozen pipes and in some cases health problems, are the issues that could occur if you neglect to heat your home.”

Based on the most recent Met Office weather predictions, many UK areas are already falling below 15C, such as Glasgow and Cardiff, with next week seeing yellow warnings for wind, which could make for a much chillier autumnal feel. This means the date to turn the heating on could be very soon for many.

David Doran, plumbing specialist at Blackstone Plumbing & Heating Ltd, emphasised that indoor thermostat readings are most crucial when deciding whether to use heating: “It’s advisable to consider turning on your heating when indoor temperatures consistently drop below 18C.

“For elderly or vulnerable people, maintaining a temperature around 20°C is recommended.

“In many places, early to mid-October is when temperatures typically start dropping, making it a common time to turn on heating.”

With just over one month remaining until the clocks change back, a popular period for Britons to switch on their heating systems, Clive suggested implementing several measures to boost household energy efficiency.

He said: “Always make sure you have draught strips on doors and windows to reduce heat loss. Ensure your letterbox is covered too, and have draught excluders at the base of your external doors.

“If you have modern UPVC French doors, some have winter and summer settings on the edge of the 5-lever latch system. Check with the installer or manufacturer for details.”

Clive added: “Good quality thermal lined curtains can help too. If you still have an open fireplace and you’re not using it, remember 40% of your heat in the room will disappear up the chimney. Lastly, layering clothing, preferably wool based garments can help with gloves and hats.”