As the UK welcomes autumn, the weather is set to turn colder and millions of households will soon face the annual debate of when is the right time to switch on the heating. According to the NHS, indoor temperatures below 15C can pose health risks, especially for older or vulnerable people.

To put an end to the guesswork, energy experts at Construction Megastore analysed Met Office data (combining historical records with current forecasts) to calculate the official “switch-on” dates for every major UK city. Robert Quinton, energy, construction and insulation expert, said: "The best time to switch your heating on is when temperatures consistently fail to reach 15C during the day. Waiting until it’s much colder can risk both your health and your boiler, especially if it hasn’t been us

See Full Page