Noisy Extractor Fan? Here’s What’s Wrong and How to Fix It

When your noisy extractor fan, a ventilation device used to remove steam, smoke, and odors from kitchens and bathrooms. Also known as range hood fan, it’s meant to work quietly in the background. But when it starts rattling, buzzing, or screeching, it’s not just annoying—it’s a warning sign. Most people ignore the noise until the fan stops working entirely. By then, you’re left with sticky walls, foggy mirrors, and maybe even mold. The truth? That sound is often your fan telling you exactly what’s wrong—and fixing it early can save you hundreds.

Common causes of a noisy extractor fan, a ventilation device used to remove steam, smoke, and odors from kitchens and bathrooms. Also known as range hood fan, it’s meant to work quietly in the background. But when it starts rattling, buzzing, or screeching, it’s not just annoying—it’s a warning sign. include worn bearings, loose blades, a dirty motor, or a blocked exhaust duct. If the fan is over 8–10 years old, the motor bearings are likely dried out or cracked. You’ll hear a high-pitched whine or grinding noise. If it’s more of a clunking or rattling sound, the fan blades might be loose or bent from grease buildup. And if you’ve never cleaned the duct, grease and dust can restrict airflow, forcing the motor to work harder—and louder.

Some people think replacing the whole unit is the only fix. But often, you just need to clean it, tighten a screw, or swap the motor. You don’t need to be an electrician to do it—just careful. Unplug the fan, remove the cover, and check for grease clogs. Wipe down the blades and motor housing with warm soapy water. If the fan still hums after cleaning, the bearings might be gone. A new motor costs under £50 and takes less than an hour to install. If you’re not comfortable with wiring, call a local electrician, a licensed professional who installs and repairs electrical systems, including extractor fans and ventilation circuits. Also known as domestic electrician, they can diagnose the issue safely and legally. A bad fan can even be a fire risk if dust and grease build up around a overheating motor.

It’s not just about noise. A failing extractor fan affects your air quality. Without proper ventilation, moisture lingers, leading to mold on walls and ceilings. That’s not just a cleanup job—it’s a health risk. And if you’re thinking of selling your home, a loud or broken fan is a red flag for buyers. Fixing it now means better air, lower bills, and a smoother sale later.

Below, you’ll find real fixes from people who’ve been there. From simple cleaning tricks to when to call a pro, we’ve pulled together the most helpful guides on extractor fan repairs—no fluff, no theory, just what works.