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Stepping out of a hot shower into a bathroom cold enough to make you rethink bathing altogether is a small daily insult. Plug in heaters for bathroom use mount right on the outlet, so they warm a small room without a cord trailing across a wet floor. After comparing 4 models, the GiveBest Space Heater is our top pick for its 800 watts, a 180-degree rotating plug and ETL certification. The GiveBest Wall Heater is our alternative pick, with a 400-watt low setting for spaces up to 100 square feet.
Pros
- 800W low wattage design helps save energy in mild climates
- Remote control with LED display for easy temperature and timer control
- Adjustable thermostat and timer function for customized heating sessions
- 180 degree rotatable plug fits outlets in different orientations
- ETL listed with overheat protection and flame retardant housing
Cons
- 800W output may not be enough for larger rooms or cold climates
- Plugs directly into the outlet, so placement is limited to outlet location
- No stated heating area or BTU rating, actual coverage is unclear
Pros
- 800W heater with 400W, 800W and ECO modes
- Heats spaces up to 100 sq ft
- 60°F to 90°F thermostat with ±1°F control
- Remote control and 12 hour timer
- ETL-certified with overheat protection
Cons
- Limited to small rooms up to 100 sq ft
- Wall-plug design depends on outlet location
- No tip-over protection listed
Pros
- 350W, 120V low wattage design
- Digital thermostat adjusts from 60°F to 90°F
- 1 to 12 hour timer in 1 hour increments
- Heats rooms up to 100 sq ft
- Compact 6.5 x 2.8 x 4.3 inch size
Cons
- Best for small spaces up to 100 sq ft
- Low wattage suits mild climates, not whole-home heat
- Wall outlet design requires a 3-prong receptacle
Pros
- 450W ceramic heater for small indoor spaces
- Thermostat adjusts from 60°F to 90°F
- 1 to 12 hour timer in 1 hour increments
- Remote control and LED display included
- Compact 0.79 lb design with 180° rotating plug
Cons
- 100 sq ft coverage limits it to small rooms
- Requires a wall outlet, not a floor-standing heater
- No tip-over protection is listed
What We Looked For in a Bathroom Heater for Small, Damp Rooms
A bathroom packs water, towels and a single outlet into a few square feet, so a heater that works fine in a den can be a poor fit here. We weighed each model against the realities of that room.
- Bathroom-safe design: A heater on the floor ends up near bath mats, towels and splashes, so we favored units that mount directly on the outlet. The GiveBest Space Heater does this in a 3.9 by 3.5 by 6.5-inch body, carries ETL certification and shuts itself off automatically when it overheats. Its listing names bathroom use, and its 800 watts move through a fan with 7 aerodynamic blades. None of our picks claims a damp-location rating, so mount any of them on an outlet well away from the tub and shower spray.
- Wattage for a small room: A typical bathroom does not need the 1,500 watts common on larger heaters, and lower wattage helps keep a shared circuit from overloading. Our picks run from 450 to 800 watts, and three of the four are rated for up to 100 square feet. The Minetom Space Heater sits at the low end with 450 watts and a 350-watt low setting, drawing 2.9 amps. That suits a powder room or a mild climate, where you want the chill gone rather than a sauna.
- Tip-over and overheat protection: According to the U.S. Consumer Product Safety Commission, electric heaters need an automatic cut-off that turns them off if they tip over. All 4 of our picks plug straight into the wall instead of standing on the floor, which removes most of that risk, although none lists a separate tip-over switch. Three of the four list automatic overheat protection. The CPSC also recommends a heater certified by a nationally recognized testing laboratory, and all 4 carry an ETL or UL listing.
- Thermostat and timer: A thermostat lets the heater cycle on and off by itself instead of running flat out in a closed room. The Lynbkls Space Heater lets you set an exact temperature from 60°F to 90°F, then cuts high output once the room passes that mark. Its timer runs from 1 to 12 hours in 1-hour steps, and its 450-watt ceramic PTC element warms up in 3 seconds. The listing says it is UL certified and rated for 100 square feet, which covers most bathrooms.
- Size and outlet placement: Bathroom outlets often sit right beside the sink, so the heater has to clear the faucet and any outlet cover. Our picks measure either 3.9 by 3.5 by 6.5 inches or 4.3 by 2.8 by 6.5 inches. Every pick has a 180-degree rotating plug, which helps when the outlet is installed upside down. The CPSC and the U.S. Fire Administration both advise keeping anything that can burn at least 3 feet away, so check that hand towels on a nearby bar sit outside that distance.
We left out central furnaces and whole-house systems because they need professional installation, which is far more than most people want for one cold bathroom. Water heaters and heated blankets do a different job entirely. We also skipped unvented fuel heaters without an indoor rating, since they bring a carbon monoxide risk into a small, closed room. Those ruled out, two larger electric heaters still deserved a look.
Other Bathroom Heaters Worth Considering
These are other bathroom heaters we looked at but did not put on our main list.
If your bathroom is large or poorly insulated, the Lasko CD08200 brings 1,500 watts, nearly double the 800 watts of our top pick. It carries ETL certification and weighs 3.4 pounds, so it needs a level, hard, nonflammable surface rather than an outlet mount. That extra heat costs floor or counter space, which is why it stayed off our main list.
Want more control over that extra power? The Amazon Basics Ceramic Heater also runs at 1,500 watts but steps down to a 900-watt low setting, and it adds tip-over and overheat protection with an adjustable thermostat. Its listing puts the noise at 43 dB, compared with under 38 dB for our alternative pick. Like the Lasko, it sits on a surface instead of the wall, which takes up space in a tight bathroom.
FAQs
Is it safe to use a plug-in heater in a bathroom?
It can be, as long as the heater has a recognized safety certification and stays clear of water and towels. All of our picks carry an ETL or UL listing, and the CDC recommends electric heaters with automatic shut-off switches and non-glowing elements. Never cover the heater, and keep anything flammable at least 3 feet away.
How large a bathroom can a wall outlet heater warm?
Three of our four picks are rated for up to 100 square feet, which covers most full and half bathrooms. Our picks range from 450 to 800 watts, so the higher-wattage models will reach temperature sooner in a cold room. A bathroom bigger than that may call for a 1,500-watt unit.
Should I leave a bathroom heater running overnight?
The U.S. Fire Administration advises turning space heaters off when you leave the room or go to bed. Portable heaters accounted for only 3 percent of home heating fires but 41 percent of fatal ones, according to the same agency. A 1 to 12-hour timer, which three of our picks offer, makes it easy to warm the room before a shower and have the heater shut itself off.
Does a wall-mounted heater still need tip-over protection?
The CPSC says an automatic cut-off is required to turn off electric heaters if they tip over. Because outlet-mounted units hang on the wall, tipping is far less likely than with a floor model. Overheat protection matters more here, and three of our four picks list it.
Sources
- CPSC Offers Tips to Prevent Home Fires From Space Heaters, U.S. Consumer Product Safety Commission. Fire-safety tips and required safety features for space heaters.
- Heating Fire Safety, U.S. Fire Administration. Home heating fire statistics and prevention messages.
- Safety Guidelines: During & After a Winter Storm, Centers for Disease Control and Prevention. Winter heating safety for space heaters, kerosene heaters and carbon monoxide.
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