Radiator heat loss will 'reduce by 39%' thanks to Victorian method which slashes bills

With the UK gradually turning colder, Brits have been trying to find ways to heat up their home without just cranking up the thermostat. From layering up with soft throws to experimenting with energy-efficient heating hacks, everyone's trying to stay snug while keeping those energy bills in check.

Heating experts at Plumbworld say the simplest fix, known as the "Victorian method", could help slash bills while helping keep precious heat contained in one room. The trick involves hanging heavy door curtains (the Victorians called them portières) across draughty internal doorways and behind the front door, then pairing them with a basic draught excluder at floor level. This fabric barrier traps the warmth you've already paid for in the rooms you're actually using - no gadgets, no tools, renter-friendly, and you can install it in minutes.

Heavy curtains can cut window heat loss by roughly a third to two-fifths (up to 33% in Salford University Energy House tests on modern glazing; 39% for heavy curtains on traditional sash windows in Historic England research).

That reduction in heat escaping translates into a small but noticeable lift in room temperature - typically around 1-2°C in the heated space, especially during evening cold snaps.

On leaky period doors and halls, draught-proofing can slash infiltration dramatically, helping rooms feel warmer at the same thermostat setting - Historic England and English Heritage both recommend door seals and thick hangings for this reason. In comfort terms, that lets many households drop the thermostat a notch (about 1°C) without feeling colder.

How to do the Victorian method

• Fit a simple tension pole or track above the doorway (internal doors and the front door).
• Hang a thick, full-length curtain (wool, lined velvet, or a thermal curtain) so it lightly touches the floor and overlaps the frame.
• Add a draught excluder along the threshold; keep letterboxes and keyholes covered.
• At windows, close heavy night curtains; they're proven to reduce heat loss substantially, reinforcing the effect.
• Keep fabric clear of open flames and don't drape curtains over radiators or block vents.