Extractor Fan Troubleshooting Made Simple

If your kitchen or bathroom fan stopped spinning, makes a humming sound, or just won’t pull air, you’re not alone. Most homeowners face a fan problem at some point, and the fix is often easier than you think. Below you’ll find the most common reasons why fans fail and practical steps you can try before picking up the phone.

Why Won’t My Fan Turn On?

The first thing to check is power. Make sure the switch is on, the circuit breaker hasn’t tripped, and the fan’s plug (if it has one) is securely plugged in. A loose connection can mimic a dead fan. If the breaker is fine, listen for a faint buzz when you flip the switch – that usually means the motor is getting power but is stuck.

Next, look at the fan’s grill. Dust, grease, and pet hair love to build up there, and they can jam the blades. Turn off the fan, remove the grill, and give the blades a gentle clean with a soft brush or vacuum hose. Be careful not to bend the blades; they’re delicate but easy to straighten with a flat screwdriver if needed.

Noise or Vibration Issues

A rattling fan often points to a loose mounting bracket or a worn bearing. Tighten any visible screws with a screwdriver. If the fan still rattles, the bearing inside the motor might need lubrication. Some fans have an oil cup you can add a few drops of light machine oil to; others need a professional replacement.

Another frequent cause of noisy fans is a clogged duct. When the air path is blocked, the motor works harder and produces extra sound. Check the vent pipe that leads outside or into the roof. If you see lint or debris, clear it out with a long brush or a shop vac on low suction.

When you’ve tried power checks, cleaning, and tightening, but the fan still misbehaves, it’s time to think about the motor itself. A motor that hums but doesn’t spin is usually burnt out and must be replaced. Most fans use a standard 120‑V motor you can buy at a hardware store. Replacing it is a straightforward job if you’re comfortable with basic wiring – remember to turn off the breaker before you start.

For bathroom fans, there’s an extra tip: many models have a built-in humidity sensor that can shut the fan off on its own. If the sensor is dirty or faulty, it may be stopping the fan early. Clean the sensor plate with a dry cloth, and if the problem persists, the sensor may need replacement.

Finally, keep a maintenance schedule. Wipe the grill every few months, run the fan for a minute after each shower to keep the motor lubricated, and inspect the duct annually. Simple habits go a long way in preventing future breakdowns.

If none of these steps bring your fan back to life, call a qualified technician. A professional can test the motor windings, replace hard‑to‑reach parts, and ensure everything meets safety standards. Remember, a working extractor fan not only keeps odors away but also helps prevent mold and moisture damage in your home.