How do I clean a bathroom exhaust fan?

Turn off the power at the breaker before starting - this is essential for safety when working with any electrical fixture. Most bathroom exhaust fans can be cleaned with basic tools and shouldn't require a contractor unless you discover wiring issues or the motor needs replacement.

Start by removing the fan cover, which typically pops off by squeezing the metal clips or removing screws. Soak the cover in warm soapy water while you work on the fan housing. Use a vacuum with a brush attachment to remove dust and debris from the fan blades and motor housing. For stubborn buildup, wipe the blades with a damp cloth, being careful not to get water near the motor. Never spray cleaning products directly into the fan housing as this can damage electrical components.

In Ottawa's climate, bathroom fans work harder during winter months when indoor humidity is higher, so they tend to accumulate dust and lint more quickly. Check your fan every 3-4 months and clean it at least twice yearly. While cleaning, listen for unusual noises when you turn it back on - grinding or rattling sounds indicate the motor may need replacement.

Signs you need professional help include a fan that's very loud, doesn't move much air, or has visible damage to wiring. Modern bathroom fans should move at least 50 CFM (cubic feet per minute) for standard bathrooms, and many Ottawa homes benefit from upgrading to quieter, more efficient models during renovations. If your fan is over 10 years old and struggling, replacement during your next bathroom update will improve ventilation and reduce moisture problems.

Keep the fan running for 20-30 minutes after showers to properly remove moisture - this prevents mold growth and extends the life of your bathroom finishes, which is especially important in Ottawa's humid summers.