Extractor Fan Lifespan: How Long Do They Last and When to Replace

When you flip the switch and your extractor fan, a mechanical device designed to remove moist, smoky, or stale air from kitchens and bathrooms. Also known as bathroom exhaust fan or kitchen ventilation fan, it works quietly in the background—until it doesn’t. Most extractor fans last between 8 and 15 years, but many fail far sooner because of dirt buildup, motor wear, or poor installation. If yours is making strange noises, spinning slowly, or just won’t turn on, it’s not necessarily broken beyond repair. Sometimes, it just needs cleaning. Other times, the motor’s worn out and replacement is cheaper than fixing it.

What really kills an extractor fan? dust and grease, the main enemies of moving parts in kitchen and bathroom vents. Over time, these build up on the blades and bearings, forcing the motor to work harder. That extra strain heats things up and wears out the windings faster. In bathrooms, moisture, especially from hot showers without proper ventilation. causes rust on metal parts and corrodes electrical connections. If you’ve got an old fan that’s been running non-stop for years, it’s probably been fighting a losing battle against grime and humidity. And if it’s installed in a high-humidity area like a steamy bathroom with no ducting to the outside, it’s doomed to fail early.

There’s a big difference between a fan that’s clogged and one that’s dead. A fan that won’t spin? Maybe the capacitor’s blown—easy fix. A fan that hums but doesn’t turn? Could be a seized motor. A fan that’s loud and rattling? Likely loose blades or worn bearings. You can clean most of these yourself with a screwdriver, a bit of vinegar, and a soft brush. But if the motor’s gone, or the housing is cracked, or the wiring’s frayed, it’s time to replace it. Newer models are quieter, more energy-efficient, and come with built-in timers or humidity sensors that turn themselves off. Replacing an old fan isn’t just about getting airflow back—it’s about saving energy and preventing mold.

Most people don’t think about their extractor fan until it stops working. But if you’ve got one that’s older than 10 years, it’s already in the danger zone. Check it every six months: turn it on, listen for grinding, wipe the grille, and make sure air is actually moving outside. A quick clean can add years to its life. And if you’re replacing it, make sure the new one matches your duct size and has enough power for the room. A fan that’s too weak won’t clear steam. One that’s too strong? It’ll be noisy and waste electricity.

Below, you’ll find real-world fixes, cost comparisons, and signs you’re dealing with a simple clog or a full-on failure. No fluff. Just what actually works in UK homes.