Naperville, IL – Homeowners across Naperville and DuPage County are being urged to check their bathroom exhaust fans after local fire officials warned that neglected units can overheat and potentially start fires.
According to the Naperville Fire Department, bathroom exhaust fans are designed to remove moisture, but when dust and lint build up inside the fan housing — or when fans are left running unattended for long periods — the motor can overheat, increasing the risk of fire.
Fire officials say the danger is often hidden. “You don’t always see the danger until it fails,” the department noted in a public safety alert shared Monday. Restricted airflow caused by dust buildup forces the motor to work harder, which can lead to overheating, especially in older or poorly maintained units.
The department identified several factors that increase fire risk, including dust and lint accumulation inside the fan, restricted airflow, motors overheating, and fans left running for extended periods without supervision. Older exhaust fans or units that haven’t been regularly cleaned are considered especially vulnerable.
To reduce the risk, fire officials recommend turning off bathroom exhaust fans after use, routinely cleaning lint and dust with a vacuum or soft brush, and considering the installation of a timer switch that automatically shuts the fan off. Officials emphasized that fire prevention doesn’t require complex solutions — just consistent habits.
Bathroom exhaust fan fires, while not always common, can be difficult to detect early because they often start above ceilings or inside walls. Fire officials say regular maintenance can significantly lower the chance of a dangerous incident.
Residents are encouraged to check their bathroom fans this week and share the warning with family members, renters, and landlords, particularly in older homes and apartment buildings.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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