Ventilation Fan Repair: Who to Call and How to Fix Common Issues

If your bathroom or kitchen fan has stopped humming, you're not alone. A quiet or broken ventilation fan can cause mould, odd smells, and higher energy bills. The good news is many problems are easy to spot and fix, and you know exactly when it’s time to bring in a pro.

Common Problems and DIY Checks

First, make sure the fan is getting power. Flip the light switch or circuit breaker that controls the fan. If the switch works but the fan stays silent, the motor is probably the culprit.

Next, crack open the fan cover. Dust builds up fast and can jam the blades. A quick vacuum or a soft brush usually clears the blockage. While you’re there, check the wiring for loose connections – a loose wire can cause the motor to stop.

Another frequent issue is a worn-out capacitor. The capacitor helps the motor start; when it fails, the fan might hum but not spin. Swapping a capacitor is cheap and doable with basic tools, but if you’re not comfortable handling electrical parts, skip it and call an electrician.

If the fan runs but leaves the room still foggy, the vent duct might be clogged. Detach the duct from the fan housing and blow air through it. A long brush or a garden hose can clear the debris. Re‑attach the duct tightly to avoid air leaks.

When to Hire a Professional

Call a qualified tradesperson when you see any of these signs: the fan sparks, the motor smells burnt, or the breaker trips every time you turn it on. Those are signs of deeper electrical faults that need a licensed electrician.

For extractor fans installed in the roof or high up on a wall, the job often involves working at height and dealing with sealed windows. A professional will have the right safety gear and know how to secure the roof flashing to avoid leaks.

Cost‑wise, a simple motor replacement runs between £70 and £150, including labour. A full fan unit swap can be £150‑£250 depending on the model. Get at least two quotes and ask whether the price includes disposal of the old unit.Finally, regular maintenance saves money. Clean the fan and its duct every six months, tighten any loose screws, and test the switch before the heating season starts. A well‑kept fan lasts years and keeps the air fresh without you having to call for repairs.

Whether you tackle the dust yourself or hand the job to a professional, knowing what to look for makes the process smoother. Keep these tips handy, and your ventilation fan will stay quiet, efficient, and problem‑free.