Bathroom Extractor Fan: How to Fix, Install and Keep It Working

Got a bathroom fan that hums but doesn’t pull the steam away? You’re not alone. A lazy extractor can make showers feel like a sauna and cause mould. The good news is most issues are simple enough to sort yourself, and we’ll show you how.

Common Problems & Quick Fixes

First, listen. If the fan motor sounds weak or rattles, the blades are probably clogged. Turn off the power, remove the cover and give the blades a good clean with a soft brush. A bit of vacuum on the vent duct clears dust that blocks airflow.

If the fan runs but air isn’t moving, the duct might be kinked or blocked. Walk outside, locate the vent cap and make sure it’s not covered by leaves or a bird’s nest. Straightening the duct and cleaning the cap often restores suction.

Sometimes the fan trips the circuit breaker. This usually means the motor is overheating because it’s working too hard. After cleaning, check the wiring connections inside the fan housing. Loose wires can cause extra resistance and heat. Tighten any loose screws, but if you see scorched wires, stop and call a pro.

When to Call a Pro

DIY works for most cleaning and simple wiring checks, but you should call an electrician or a ventilation specialist if you notice any of these signs: the fan sparks, the breaker trips repeatedly, you smell burnt plastic, or the fan never turns on after you’ve checked the power.

Professional repair usually takes 1‑2 hours. A qualified tech will test the motor, replace faulty parts, and make sure the installation meets UK building regulations. If you’re renting, a certified repair can also protect you from liability.

Regular maintenance makes a huge difference. Give the fan a quick wipe‑down every few months, and schedule a deeper clean once a year. This keeps the motor cool and extends its life, saving you money in the long run.

Bottom line: start with a simple clean, check the duct, and make sure the wiring is solid. If anything feels unsafe or the fan still won’t work, don’t gamble – call a professional. A well‑maintained bathroom extractor fan means a drier, healthier bathroom for you and your family.