Heater types
Fan heaters: fast heat, with trade-offs
The short answer
A fan heater blows air across a hot element, so you feel warmth quickly. Purchase price, noise, controls and safety vary by model, so compare the exact heater rather than the category label alone.
Written and checked by the RapidHeat UK team · Last updated September 2026 · how we work out running costs
Key takeaways
- Fan heaters give the fastest warmth for the lowest purchase price, and the most noise.
- They heat air rather than objects, so the room cools quickly once you switch off.
- A ceramic heater with a thermostat is the quieter, more controllable version of the same idea.
How a fan heater works
Electricity heats a coiled wire element until it glows. A fan pushes room air across it and out of the front grille. Because the air is moving, you feel warmth within seconds — much faster than a radiator that has to warm itself first. The downside is that everything you feel depends on the fan continuing to run.
What fan heaters are good at
- Instant warmth. Useful when you come in cold and want heat now.
- Low purchase price. Basic models start under £20.
- Light and portable. Easy to carry between rooms.
Where they fall down
- Noise. A bare fan heater is loud enough to intrude on a phone call, a film or sleep.
- Moving air. Some people find the constant airflow uncomfortable, and dust on an element can create a temporary smell when the heater first runs.
- Controls vary. Entry-level models may offer only simple power settings, while others include a thermostat or timer. Check the exact specification.
- Heat stops instantly. Switch off and the warmth disappears with the airflow.
Fan heater vs ceramic heater
| Basic fan heater | Ceramic heater (e.g. RapidHeat) | |
|---|---|---|
| Time to feel warm | Seconds | About a minute, room comfortable in about five |
| Noise | Noticeable | Low hum |
| Element temperature | Very hot exposed wire | Lower-temperature ceramic plates |
| Controls | Often high/low only | Thermostat, timer, remote |
| Cost to run | Depends on wattage, controls and run time | Depends on wattage, thermostat cycling and run time |
Both are electric, so both turn a kilowatt-hour into the same amount of heat. The saving comes from the thermostat, not from any magic in the technology. See running costs for the arithmetic.
What a fan heater costs per hour
A common 2,000 W fan heater draws 2 kW. At roughly 27p per kWh that is about 54p an hour at full power, or around £2.70 for a five-hour evening. A 1,200 W ceramic heater with a working thermostat can switch its element off once the room reaches the set temperature. The saving cannot be predicted without the room, weather, insulation and setting, which is why you should compare controls as well as wattage.
Using one safely
- Plug directly into a wall socket, never through a loaded multi-way adaptor.
- Keep at least a metre clear in front of the grille; never dry clothes on it.
- Do not run a bare fan heater unattended overnight.
- Choose a model with overheat cut-off and, if free-standing, a tip-over switch.
Should you buy a fan heater or something better?
If you need occasional bursts of heat in a garage or utility room and cost of purchase is everything, a fan heater is fine. If the heater will be in a room you actually live in — bedroom, office or lounge — compare noise and control quality carefully. A plug-in ceramic heater with a thermostat, timer and remote may be easier to control, but running cost still depends on wattage and how long the element operates.
RapidHeat ceramic heater
4.8/5 · 1,247 UK customers£49.95· £89.91 for two · £110.89 for three (about £36.96 each)
- Thermostat, timer and remote
- Warm room in about 5 minutes
- Free tracked UK delivery
- 30-day money-back guarantee
Perfect for my cold office
I have a small office with a door that gets really cold because the building management keeps the winter temperature far too low for comfort. I plugged this into the socket above my desk and now I am warm without anyone even knowing it is there. I love it.
Great in the bathroom
We use it to take the chill off the bathroom before the kids' bath time. Warms up fast and the timer is handy. Four stars only because I wish the display were a little dimmer at night.
Worth being straight about: RapidHeat is built for rooms up to about 12 m². It is not a replacement for central heating and it will not transform an open-plan lounge or an uninsulated garage. If it is not right for your room, send it back within 30 days.
Questions people ask
- Are fan heaters expensive to run?
- A 2,000 W fan heater costs about 54p for each full-power hour at 27p per kWh. Controls vary by model: a working thermostat can switch the element off after the room reaches its set temperature, while a heater without one keeps drawing power until you switch it off.
- Are fan heaters noisy?
- Bare fan heaters are the noisiest type — noticeable in a bedroom or on a video call. Ceramic heaters use a slower fan across ceramic plates, which is a soft hum rather than a roar.
- How long does a fan heater take to warm a room?
- You feel warm air within seconds and a small room feels comfortable in roughly five to ten minutes. Because it is warming air, not walls and furniture, the warmth fades quickly after switch-off.
- Can I use a fan heater in a bathroom?
- Only outside the wet zones, plugged into a socket beyond the reach of anyone in the bath or shower, and ideally used to pre-heat the room before you go in. Never place a mains heater where it can be splashed.
Want fast heat without the fan-heater noise?
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