Space Heaters This Winter: How to Stay Warm Without Raising Bills

Energy prices continue to fluctuate, temperatures are falling, and more households are discreetly looking for extra warmth without damaging their finances.

This winter, many households in the UK and US are using space heaters as a fallback instead of turning up central heating. A suitable model can quickly heat a cold room, whereas an unsuitable choice can consume a great deal of electricity and increase safety concerns.

Why space heaters are back in the spotlight

Central heating remains the main source of warmth in most homes, but it does not always suit modern routines. People now work remotely in spare rooms, children revise in small bedrooms, and older family members may remain in one room for much of the day. Warming an entire property when only one room is occupied rarely seems financially sensible.

This is where space heaters can help. They are suited to three typical scenarios:

• Heating rooms that are cold or poorly insulated, including converted lofts and garages.
• Adding support to the main heating system during cold spells without changing the thermostat for the whole home.
• Delivering rapid warmth for brief periods, such as in a bathroom or home office in the morning.

Households using targeted space heating in one or two rooms often cut their gas or electric bills compared to whole-house heating at high temperatures.

Energy regulators on both sides of the Channel continue to caution consumers about unpredictable prices. This is encouraging people to reconsider not just how much heat they use, but also when and where they use it.

Key types of space heaters this winter

Fan heaters: compact, rapid and power-hungry

Fan heaters are found in millions of cupboards for good reason. They are inexpensive, portable and able to warm a small space within minutes. A resistance element heats the air while a fan pushes it around the room.

• Ideal for very small spaces, such as bathrooms or compact home offices.
• Suitable for very brief spells of heating.
• Simple to carry between rooms.

However, they generally have high wattage and draw power continuously while operating. This immediate warmth can come with substantial energy consumption, particularly from older units without timers or thermostats. Using one for several hours each day can soon wipe out any expected saving.

Oil-filled radiators: gradual warmth, consistent comfort

Oil-filled radiators warm a fluid inside the unit, which steadily gives off heat through metal fins. They behave more like a small central-heating radiator than a device that blows hot air.

• Strong thermal inertia means they continue emitting heat after being switched off.
• Their silent operation makes them appropriate for bedrooms and living rooms.
• They are often more cost-effective for regular use lasting several hours.

They are not designed to provide instant warmth. A cold room will take longer to become comfortable than it would with a fan heater. Although many models are large and weighty, integrated wheels make them easier to move. For households heating one living area for most of the evening, they can offer a more favourable compromise between cost and comfort than fan heaters.

Paraffin and kerosene heaters: effective but contentious

Liquid-fuel heaters, including paraffin and kerosene stoves, continue to appeal in areas with unreliable electricity supplies or older, draughty properties. They create powerful radiant heat and can readily warm larger areas.

• Able to warm large rooms and open-plan spaces quickly.
• Independent of mains electricity, which is useful during power cuts.

They also involve more safety considerations than electric appliances. Burning fuel produces gases and fine particles, making continual ventilation essential. A window or vent must therefore remain slightly open, which inevitably allows some of the hard-earned heat to escape.

Using a fuel-burning heater in a closed room without fresh air can lead to carbon monoxide build-up, which can be deadly.

In some countries, insurance policies already discourage indoor use of these appliances. In places where they are permitted, robust carbon monoxide alarms, regular maintenance and strict fuel-storage practices are required.

Infrared heaters: warming people rather than air

Infrared heaters operate very differently from standard convector heaters. Instead of heating the air, they project radiant heat directly onto surfaces, furniture and skin. The warmth is felt quickly, particularly by anyone sitting in the beam.

• Useful for focused areas such as a desk, workshop bench or balcony.
• Provide almost immediate warmth when switched on, without first heating the room.

They are particularly effective in semi-open or draughty locations where heated air would quickly disperse. However, they seldom warm an entire living room evenly. Anyone outside the direct beam may still be cold. They are most effective as an addition to room heating, rather than a complete substitute.

Ceramic heaters: a balanced option

Ceramic space heaters contain a ceramic element that retains and releases heat more gradually than an exposed metal coil. Many pair this element with a small fan, creating a balance of speed and comfort.

• They warm up reasonably quickly while retaining heat slightly longer.
• They are often quieter and more compact than oil-filled radiators.

Their purchase price is usually higher than that of basic fan heaters, but improved controls such as thermostats, oscillation and eco modes can reduce running costs. For small and medium-sized rooms requiring daily heat, they are often a practical middle-ground choice.

How to choose a space heater that works for your life

Selecting a heater involves more than checking its wattage. Three practical considerations can help narrow down the options:

• Room size: A small bathroom or study may only need a basic fan or ceramic heater, while a larger living room will usually benefit from an oil-filled radiator or more powerful appliance.
• Usage pattern: Infrequent 15-minute bursts are better suited to fan and infrared heaters. Extended evening use is more appropriate for oil-filled radiators or efficient ceramic models.
• Energy budget: A low-cost heater with limited controls can become the most expensive choice over winter once electricity bills are received.

Rule of thumb: many homes need around 100 watts per square metre for short-term heating, but insulation quality can raise or reduce that number significantly.

Households can make a straightforward calculation by estimating daily usage hours, multiplying them by the heater's power in kilowatts, and then multiplying that figure by the local electricity tariff. This reveals the difference between a 2,000-watt fan heater operating at full power and a 1,200-watt oil-filled model that cycles on and off through its thermostat.

Quick comparison of common options

Type	Upfront price (approx.)	Typical energy use	Best room size	Main use case
Fan heater	£15–£40 / $20–$50	High, continuous draw	Small rooms	Short, intense heating
Oil-filled radiator	£40–£120 / $50–$150	Moderate over long periods	Medium rooms	Evening or all-day comfort
Liquid-fuel heater	£90–£250 / $100–$300	Depends on fuel price	Large, ventilated spaces	Cold snaps, power cuts
Infrared heater	£40–£160 / $50–$200	Low for targeted areas	Zones, not full rooms	Desks, patios, workshops
Ceramic heater	£40–£120 / $50–$150	Moderate with better control	Small to medium rooms	Daily, controlled heating

Safety features that really matter

As purchases increase, fire brigades repeatedly highlight the dangers of using space heaters improperly. Before making a purchase, more shoppers are looking for:

• Tip-over protection, which switches off power if the appliance falls over.
• Overheat protection, which shuts down the heater if its components become excessively hot.
• Durable cables and plugs designed for the full electrical load.
• Automatic timers or thermostats to prevent accidental all-night operation.

Experts recommend keeping heaters at least one metre from furniture, curtains and bedding, and never connecting high-wattage appliances through multi-plug adapters. These measures may appear obvious, but many house fires each winter still begin with a space heater pressed against a sofa.

Small habits that lower bills further

In addition to choosing the right appliance, a few daily habits can affect the cost of keeping warm:

• Close internal doors to keep heat in the rooms where it is needed.
• Fit draught excluders and use thick curtains to reduce heat loss.
• Wear extra layers, especially thermal base layers, so the heater can be set slightly lower.
• Pair a lower central-heating setting with a space heater in the principal living room, rather than heating the whole home to a high temperature.

These changes may not seem dramatic, but across several cold months they can reduce the effect of increasing tariffs.

Thinking beyond this winter

Space heaters address an immediate need, but they also draw attention to wider problems in older housing stock, including poor insulation, single glazing, damp walls and inadequately sealed floors. Many homes lose heat so fast that even efficient heaters must work harder than necessary.

Over the longer term, households may benefit more from pairing modest insulation improvements with a smaller, smarter space heater. Simple measures such as loft insulation, radiator reflector panels and sealing gaps around windows can reduce the power required from any heater bought now. By next winter, the same appliance may be able to do its job at a lower setting, with a noticeable difference to household bills.