Overview
- Households are urged to open curtains for daytime sun and close them at dusk to retain warmth and potentially delay switching on central heating.
- With sunset around 4.10–4.14pm today in the UK, drawing curtains at roughly 4pm is advised, moving earlier to about 3.55pm by November 30.
- Lewis recommends lining existing curtains with inexpensive, fire‑resistant fleece or using thermal curtains to improve insulation.
- Retailers such as Dunelm, Amazon, Argos, The Range, B&Q and Tesco stock thicker or fleece‑lined options, according to the reports.
- The curtain routine sits within broader guidance that includes radiator reflectors, draught‑proofing and the principle to heat the person rather than the entire home.