That’s why we offer articles like this one on how dangerous a bathroom exhaust fan can be. Safety Comes First at Först Consulting GroupĪt Först Consulting Group, we want everyone to be safe in their own homes. Reinstall the fan cover onto the attachment clips and press it back in place against the ceiling.Use a crevice tool if areas are hard-to-reach. Reach your vacuum’s dusting attachment inside the opening to clean around the fan housing and motor.Clean the fan cover on both sides with your vacuum’s brush attachment.Turn off the switch or circuit breaker to shut off power.It is recommended that you clean your bathroom exhaust fan every six months to year, depending upon how often you use it. How Often Should I Clean My Bathroom Exhaust Fan?Īs you use your fan, dirt and dust is drawn up and coats the grill cover, fan blades and motor. The optimal time to run your bathroom exhaust fan is for 15-20 minutes. Bathroom exhaust fans should not be used for prolonged periods of time and should be turned off when you leave the house.Those fans that are not easily accessible for regular cleaning, or those that appear to have heat damage or those in which the blades do not rotate freely, should be replaced with thermally-protected units.Inspect and clean all bathroom fans regularly.Maintenance of a Bathroom Exhaust Fanįor proper care and maintenance of your bathroom exhaust fan and to avoid dangers, here is what Assistant Chief Doyle recommends for both residential and commercial buildings: When overheated, the wire insulation will fail and cause a fire. The typical NEMA Class B motor corresponds to a maximum insulation temperature of 266 ☏. Any additional resistance in the bearing can lead to a locked rotor, thus overheating the motor to temperatures in excess of 340 ☏. Most fans have a shaded pole motor which has a very low starting torque. The three most common causes of a bathroom exhaust fan fire are: faulty wiring, running the fan for extended periods of time and overheating the motor, and failing to clean the fan. This buildup of lint within these fans, and on the fan motor, can create a potential fire hazard,” said Mark Doyle, Stafford County Fire and Rescue Department Assistant Chief. The lint provides an easy-to-ignite fuel source which in turn ignites nearby combustible building materials. “These fans, over time, build up lint that insulates the motor, exacerbating the heat build-up.
Although these fans are “Great at preventing steamed-up mirrors, damp walls and fogged widows…and remove odors…they are also a fire hazard,” a firefighter said. Did you know that your bathroom fan could also be dangerous? There are a number of precautions you should take that can save your home and possibly your life.Ī local television news story reported that firefighters in Stafford County, VA responded to a number of fires that started in ceiling-mounted bathroom exhaust fans. That’s why you have a bathroom exhaust fan that can vent moisture out and away from your home. specify that there must be an operable window to allow for better airflow.When you shower, moisture builds up in your bathroom. If you don't have a bathroom fan, most building codes in the U.S. "Building codes today require that the exhaust is vented outside through insulated ducting to a roof vent that goes directly to the exterior." Otherwise, you may be contributing to moisture and mold problems in your attic or wall spaces. "It was common in the '70s and '80s for it to be vented into the attic space," says Bayne. If you're a homeowner, be sure that your fan is properly vented directly to the home's exterior via an insulated duct. And though it's seldom done, the fan should be cleaned at least yearly.
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If you're continually forgetting to turn it off, install a fan timer. The most important time to do this is after you shower. "You should turn the fan on each time you run water in the bathroom and leave it running for about 20 minutes after you open the door," says Bayne. By simply turning on the bathroom fan, you minimize a lot of those problems.
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