Heating One Room When the Heating Dies

Heating an entire home during a power cut is usually the wrong goal. Heating one room properly, and accepting the rest of the house will be cold, is both more achievable and far safer — because most of the genuinely dangerous "solutions" people reach for come from trying to heat too much space with the wrong tools.

Pick the smallest room with the fewest exterior walls and windows, ideally one without a chimney draught pulling heat out. A small interior bathroom or box room often beats a large bedroom even though it feels like a downgrade — less air volume to warm and fewer surfaces losing heat to the outside.

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   Close every door and vent you don't need. Shut the room off from the rest of the house, including internal doors, to stop your body heat and any extra warmth escaping into cold hallways.

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   Block draughts at the floor and window. Rolled towels or blankets along the bottom of doors and windows stop cold air creeping in; this alone raises perceived warmth noticeably.

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   Layer clothing before adding blankets. Thermal or wool layers next to skin, then loose layers on top, trap far more warmth than one thick jumper — add blankets over the top rather than instead of layering.

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   Use body heat deliberately. Sitting together under one large blanket or duvet, rather than everyone under separate ones, keeps the air between bodies warmer with no extra equipment.

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   Add safe, low-power warmth sources if you have them. Battery or USB-powered heated blankets and hot water bottles filled from a kettle boiled elsewhere are both genuinely safe additions; hand and foot warmers help extremities specifically.

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   Only consider any kind of flame heater if it is a properly certified indoor heater, used exactly as instructed, with a working carbon monoxide alarm and some ventilation. If you don't already own one rated for indoor use, don't buy or improvise one during the emergency itself — this is not the moment to experiment.

Cold is uncomfortable and, in extreme or prolonged cases, genuinely dangerous, but it's slow and visible — you notice you're cold. Carbon monoxide from an unflued gas heater, a barbecue, a camping stove, or a generator brought indoors or into a garage is invisible, odourless, and can incapacitate people before they realise anything is wrong. Every winter, deaths are recorded from exactly this mistake: bringing an outdoor heat source inside during a power cut because a room felt unbearably cold. It is never worth the trade.

It won't protect pipes elsewhere in the house from freezing — for that you need to know where your stopcock is and consider letting a trickle run, or draining vulnerable pipes. It also isn't a substitute for checking on anyone in the household who is very young, very old, or has a medical condition that makes them vulnerable to cold; they may need more than one warm room can provide, and a winter storm outage that runs for days is a different, more serious situation than one cold evening.

• Heating a large open-plan space instead of retreating to one small room
• Using a barbecue, patio heater or generator indoors "just for an hour"
• Skipping clothing layers and relying on blankets alone
• Forgetting extremities — cold hands and feet drive most of the discomfort people blame on room temperature

• US CDC, carbon monoxide poisoning prevention (https://www.cdc.gov/carbon-monoxide/about/index.html)
• Met Office, cold weather warnings and advice (https://www.metoffice.gov.uk/weather/warnings-and-advice)
• NHS, keeping warm in winter (https://www.nhs.uk/conditions/first-aid/)