Overview
- Martin Lewis urges 'tactical curtains': open for daytime sun, then close around sunset (about 4pm) to retain heat longer.
- He repeats his '1 degree challenge', saying a 1C thermostat reduction can trim heating costs by roughly 10%.
- Households with combi boilers are advised to lower flow temperature to about 60C, a tweak cited to save around £100 a year.
- Heating specialists stress maintenance and draught‑proofing, including bleeding radiators, fitting TRVs and using reflective panels or thermal curtains.
- The guidance follows forecasts of temperatures down to -7C and an October price‑cap rise that nudged the average annual bill to about £1,755.