DIY Fan Fix – How to Get Your Extractor Fan Working Again

If your kitchen or bathroom fan rattles, hums, or just stops, you don’t need to call a pro right away. Most fan issues are caused by a few easy‑to‑check problems, and with a screwdriver and a bit of patience you can sort them yourself.

Common Reasons Fans Fail

First, identify the symptom. A fan that won’t start usually has a bad motor, a loose wire, or a blocked blade. A noisy fan often means dust buildup or a loose mounting screw. And if the fan spins slowly, the capacitor may be weak.

Before you climb on a ladder, turn off the power at the circuit breaker. Safety first – a quick test with a voltage tester will confirm the circuit is dead.

Step‑by‑Step DIY Fix

1. Remove the cover. Most extractor fans have a clip‑on or screw‑on grille. Unscrew or release the clips and pull the cover down. You’ll see the fan blade and motor housing.

2. Clean out dust. Use a soft brush or a vacuum with a narrow nozzle to clear grime from the blades and vent. Dust adds weight and can make the motor overheat.

3. Check the wiring. Look for any loose, frayed, or burnt wires. Tighten any loose connections, and if a wire looks damaged, replace that section with the same gauge wire.

4. Test the motor. With the fan still off the housing, connect a low‑voltage plug (or use a multimeter) to see if the motor spins. No movement? The motor is likely faulty and needs replacement.

5. Replace the capacitor. If the fan starts but runs sluggishly, the capacitor is the usual culprit. Capacitors are cheap and snap into place – just note the voltage rating before swapping.

6. Re‑assemble and test. Put the cover back, secure the screws, turn the breaker on, and flip the switch. You should hear a smooth, steady hum.

When the fan still misbehaves after these steps, it’s time to consider a full fan replacement. Most extractor fans fit standard 100‑mm or 125‑mm openings, and you can find a matching model at any hardware store. Follow the same removal steps, disconnect the old fan, and mount the new one using the same screws or clips.

Remember to keep a clear path for air – clean the ductwork periodically to avoid future clogs. A quick vacuum of the vent every few months will keep the fan breezy and extend its life.

With the right tools and a bit of know‑how, a broken fan is a minor annoyance, not a major expense. Keep this guide handy, and the next time your fan falters, you’ll know exactly how to fix it yourself.