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Heated airers run at low temperatures and low power, so many people leave them on overnight. Whether that is a good idea depends on your model and how you use it.
What makes heated airers fairly low risk
- The rails only get warm, typically well under the temperature of a radiator.
- Power is low, usually 200 to 300 W, so the wiring and plug carry much less current than a heater.
- Good models have thermal cut-outs that switch off if they overheat.
Risks to avoid
- Extension leads and adaptors: plug straight into the wall.
- Damaged cables or plugs: stop using it if the cable is cracked or the plug gets hot.
- Using a non-matching cover: only use the cover designed for your airer; blankets or duvets can trap heat.
- Placing it near curtains, beds or sofas.
- Cheap unbranded models without UKCA or CE marking from unknown sellers.
A safer way to dry overnight
Use an airer with a built-in timer and set it to switch off after a few hours. Put it in a small room with the door closed and a dehumidifier running on its humidistat. The clothes keep drying after the airer switches off, and the moisture doesn't end up on your walls. See drying clothes with a dehumidifier.
Where to buy (prices change often, so check the current price):
And make sure you have a working smoke alarm on every floor. Many UK fire services offer free home fire safety visits.