How to Stay Warm Without Central Heating: Kate's Winter Resilience Protocol

The temperature in our sitting room hit 12°C during the January 2024 storm. The power was out for 11 hours, which meant the gas boiler — which needs electricity to run the pump and controller — was not working either.

We were not in danger. We had blankets, we had warm clothes, and we had the knowledge that 11°C is cold but manageable. We ate hot soup on the camping stove, wore everything we owned, and slept with extra blankets. It was not comfortable, but it was fine.

That experience was useful because it made a theoretical question concrete: what does staying warm without central heating actually look like, and what would we do differently next time?

This guide is the answer to that question.

Understanding the Problem

Modern UK homes are more dependent on electricity for heating than most people realise. Gas central heating systems need electricity for:

- The boiler's electronic controller and display - The pump that circulates water through the radiators - Zone valves that open and close for different areas of the house - The thermostat, if it is a smart thermostat

A gas boiler without power is essentially inert. The gas supply is intact; the ignition and circulation system is not. Most people discover this for the first time during an actual power cut.

Electric heating systems (storage heaters, panel heaters, underfloor heating) are entirely dependent on power — no power, no heat.

Heat pumps need electricity both to run the heat pump compressor and the distribution system.

The practical reality: in a power cut, most UK homes have no primary heating within a few hours. The question is what to do about it.

Layer 1: Reduce Heat Loss

Before adding any heat source, reduce how fast you are losing the heat that is already in the building.

Close internal doors. A sitting room with the door closed stays warmer than the rest of the house because you are heating a smaller volume of air. Move the household into one or two rooms rather than spreading across the house.

Close curtains and blinds. Glass is the biggest heat loss point in a modern insulated house. Closing thick curtains after dark dramatically reduces heat loss through windows. In a serious cold scenario, temporary secondary glazing (bubble wrap taped over window panes) makes a measurable difference.

Seal draughts. Letter boxes, cat flaps, and gaps under exterior doors leak cold air. A rolled-up towel at the bottom of a door is not elegant, but it is effective.

Insulate the floor. Cold floors make you feel cold even when the air is tolerable. Rugs, yoga mats, folded duvets — anything between bare feet and an unheated floor.

Layer 2: Insulate Yourselves

Layered clothing is more efficient than heating air. A well-layered person at 12°C is comfortable. A lightly dressed person at 12°C is not.

Base layer: a fitted thermal top and thermal leggings. These trap a thin layer of warm air against the skin.

Mid layer: a fleece or wool jumper. Wool is particularly good because it retains warmth when damp.

Outer layer: a down or synthetic jacket. You do not need to be fully dressed-for-outdoors inside your house, but a good insulating jacket makes a large difference.

Head: a significant amount of body heat is lost through the head. A wool hat in a cold house is not ridiculous — it is effective.

Hands: thin wool liner gloves allow you to function (use a phone, type, hold things) while retaining warmth.

Sleeping: this is where most people underestimate the cold at night. A sleeping bag rated to 0°C inside your bed (on top of or inside your normal bedding) handles temperatures that feel uncomfortable under normal duvets.

Layer 3: Supplementary Heat Sources

Once you have reduced heat loss and insulated yourselves, you may want an active heat source for the primary room or for night-time warmth.

Electric options (require power from a generator or power station):

An electric oil-filled radiator draws 500–2,000W and produces safe, consistent radiant and convective heat. At 1,000W, it runs for about 1 hour per kWh. An EcoFlow DELTA 2 (1,024Wh) runs a 1,000W radiator for approximately 1 hour — useful to warm a room in the evening, not for all-day heating.

An electric blanket draws 60–100W and warms a bed to sleeping temperature very efficiently. A 1,000Wh power station can power an electric blanket for 10+ hours — enough for a full night's sleep. This is the most efficient electrical heating option when you have a power station.

Non-electric options:

A camping gas stove produces heat as a by-product of cooking. A burner on for 20 minutes will noticeably warm a small kitchen. This is heat for free if you are cooking anyway, but not a heating strategy on its own.

A portable propane heater designed for indoor use (catalytic heaters like Mr. Heater are common in the US; less common in the UK) provides meaningful heat from a fuel canister. UK regulations around indoor propane use are more restrictive than US regulations — ensure any indoor gas heater you use has been specifically designed and approved for indoor use, and ventilate the room slightly.

Wood-burning options: a portable wood stove in a workshop or garage provides substantial heat for an outbuilding, with the option of an open door to heat an adjacent space. Not suitable for use inside a house without proper flue installation. See Best Portable Wood-Burning Stove 2026 for what is available.

The Specific Scenarios

Scenario 1: Power cut, gas boiler dead (typical UK winter scenario)

Immediate: close doors, make the sitting room the base, layer up, put the kettle on now (if gas hob available).

Hours 2–6: if cold is a concern, use an electric blanket from a power station in the evening. Hot food and drinks from the camping gas stove.

Overnight: sleeping bags inside normal bedding. All household members in the same room if the house is very cold.

Scenario 2: Extended outage or no gas, winter

A well-insulated modern UK house loses roughly 1°C per hour when outdoor temperatures are near zero. After 12 hours, a room that started at 20°C is around 8°C. After 24 hours, roughly 4–6°C.

In these conditions: move everyone to one room, use all available insulation, use electric blanket overnight. An oil-filled radiator used for 2 hours morning and evening on the power station maintains a liveable temperature in a single insulated room.

Scenario 3: Heating fails with elderly or vulnerable household members

The threshold changes significantly. Infants and older people cannot regulate body temperature as effectively. 12°C is uncomfortable for a healthy adult; it is potentially dangerous for an elderly person over 24–48 hours.

In these scenarios, the correct response may be to leave the house rather than stay and manage. Go to a heated family member's house, a hotel, or a council-managed warm space. Do not treat it as a failure to plan — it is a plan.

What we Has

EcoFlow DELTA 2 in the garage: can run an electric blanket for a full night or an oil-filled radiator for 2 hours.

Camping gas stove with two spare canisters: hot food and drinks throughout any outage.

Sleeping bags rated to 0°C: three of them (one each for Emma, Jack, and us).

No dedicated indoor propane heater — our view is that the risk of improper ventilation in a stress situation is not worth it. The power station plus electric blanket covers the primary need.

Frequently Asked Questions

Can we use a BBQ or charcoal grill indoors?

Never. Burning charcoal produces carbon monoxide in quantities that can kill you in an enclosed space in under an hour. Charcoal grills are outdoor-only equipment, regardless of the scenario. This applies to camping stoves with poor ventilation as well — ensure there is air movement when using any combustion heat source indoors.

Will my pipes freeze?

UK pipes are at meaningful risk below -5°C ambient over 12+ hours, particularly pipes running through uninsulated external walls or in the loft. If a prolonged cold snap coincides with a heating failure, running a slight trickle from taps (to keep water moving), opening cabinet doors under sinks on external walls, and keeping the loft hatch open to allow house warmth to reach the loft space reduces the risk.

How cold is too cold for a house to stay in?

Below 8°C is uncomfortable for healthy adults and risky for infants, elderly, and immunocompromised people. Below 5°C is the threshold where hypothermia risk increases for anyone sleeping in an inadequately insulated space. At these temperatures, leaving the house for somewhere heated is the right answer.

Can we use a wood-burning stove in my living room without installation?

No. A wood-burning stove needs a flue — a metal pipe or masonry chimney that directs smoke and combustion gases outside. Burning wood without a flue in an enclosed space produces carbon monoxide and fills the room with smoke. A portable outdoor wood stove is for outbuildings with ventilation, not for indoor use without a proper installation. See Best Portable Wood-Burning Stove 2026.

What is the most efficient way to use a portable power station for heat?

Electric blankets. An electric blanket drawing 80W runs for 12+ hours on a 1,000Wh power station. Compared to an oil-filled radiator drawing 1,000W, the electric blanket delivers warmth where it matters (your body, at night) at one-twelfth the power cost.

Related Guides

Power during outages: What to Do in a Power Outage: our Family Protocol Backup power: Best Solar Generator for Home Backup 2026 Wood stoves for outbuildings: Best Portable Wood-Burning Stove 2026

You can stay comfortable at temperatures that feel threatening if you are prepared. The key insight is that heating yourselves (layering, electric blankets, sleeping bags) is far more efficient than heating rooms. Concentrate resources on people, not cubic metres of air.