Fan Servicing: How to Keep Your Extractor Fans Running Smoothly

If your kitchen or bathroom fan is losing suction, making odd noises, or won’t turn on at all, you’re probably thinking about a costly repair. The good news is that many fan issues can be sorted in under an hour with a few tools and a bit of know‑how. Below you’ll find the most common problems, quick fixes, and clear signs it’s time to call a professional.

Common Fan Problems and Quick Fixes

1. Dirty or clogged filters. Over time, grease and dust build up on the metal or carbon filters. A blocked filter reduces airflow and puts extra strain on the motor. Remove the filter (usually behind a removable cover), soak it in hot, soapy water for 10‑15 minutes, rinse well, and let it dry completely before reinstalling.

2. Obstructed ductwork. The duct that carries moist air out of the house can collect lint, debris, or even mold. Disconnect the duct from the fan housing, check the inside with a flashlight, and clear any blockage with a flexible brush or vacuum hose. Seal the connections with foil tape to prevent leaks.

3. Faulty fan motor. If the fan spins slowly or only hums, the motor may be overheating or the bearings could be worn. First, turn off the power at the circuit breaker, then unplug the fan. Give the motor a gentle spin by hand – it should turn freely. If it feels gritty, spray a little light machine oil on the shaft bearings, re‑assemble, and test. Persistent humming usually means the motor needs replacement.

4. Bad electrical connection. Loose wires or a tripped breaker are simple reasons a fan won’t start. Open the fan’s electrical box (again, after cutting power), look for any loose or blackened wires, and tighten or replace them. Reset the breaker or replace a blown fuse, then try the fan again.

5. Faulty switches or controls. Wall switches or pull‑chain switches can wear out. Test the switch with a multimeter; if there’s no continuity, swap it out. Most fans use standard 120‑V switches that are easy to find at any hardware store.

When to Call a Professional

Even with the best DIY effort, some situations call for a qualified tech. If you notice any of the following, stop and book a service:

• Repeated motor failure after you’ve cleaned and oiled it.
• Burning smell or sparks when the fan runs.
• Complex ductwork that runs through walls or ceilings, especially if you’re unsure how to access it.
• Electrical work beyond a simple switch replacement, such as rewiring a new circuit.
• Your fan is still under warranty – opening it yourself could void the coverage.

Professional technicians have the tools to test motor windings, replace sealed bearings, and ensure the fan meets local building regulations. They can also advise on whether a simple repair or a full fan replacement makes more sense for your home.

Regular maintenance makes a huge difference. Set a reminder to clean the filter every month if you cook a lot, and give the duct a quick visual check twice a year. A little upkeep now saves you the hassle of a broken fan later.

Got a stubborn fan that just won’t cooperate? Follow the steps above, and if you’re still stuck, reach out to a trusted local service. Quick fixes keep the air moving, and a pro can handle the heavy lifting when you need it.