Fan Cleaning Tips: Simple Steps to Boost Suction and Extend Life

Notice your kitchen or bathroom fan losing power? Most of the time a dirty filter or build‑up inside the unit is to blame. Cleaning it yourself is faster and cheaper than calling a pro, and you’ll notice the difference instantly. Follow these straight‑forward tips and keep your fan humming like new.

1. Gather the Right Tools

All you need is a screwdriver (if your fan has a removable cover), a soft brush or old toothbrush, warm soapy water, a microfiber cloth, and a vacuum with a narrow nozzle. If you have a metal filter, a mild degreaser works well, but avoid harsh chemicals that can corrode plastic parts.

Turn off the fan and unplug it before you start. Safety first, especially if you’re working near electricity. Let the fan cool for a few minutes if it’s been running hot.

2. Clean the Filter

Most extractor fans have a metal or carbon filter that traps grease and dust. Remove the filter according to the manufacturer’s guide – usually a simple slide or twist. Soak it in warm soapy water for 10‑15 minutes, then scrub gently with the brush. Rinse well and let it air dry completely before reinstalling.

If the filter looks warped or the mesh is torn, replace it. A fresh filter restores airflow and keeps odors from escaping back into the room.

While the filter dries, wipe the fan’s exterior with a damp cloth. Remove any visible grime around the vent opening, and vacuum the area behind the fan if you can access it. This removes dust that can clog the motor and reduce efficiency.

3. Deep Clean the Duct (Optional)

For stubborn grease or when the fan still feels weak, you may need to clean the duct. Detach the duct from the vent (most are just clipped in). Run a garden hose through it for a minute, or use a flexible brush designed for ventilation ducts. Make sure the duct is completely dry before re‑attaching.

If you’re not comfortable pulling the duct out, a professional can do this quickly, but many homeowners manage it with a bit of patience.

4. Check the Fan Motor and Blades

Once the filter and duct are clean, give the motor a quick look. Dust on the motor housing can cause overheating. Use the vacuum’s narrow nozzle to suck out dust from the motor’s vents. Do not spray water directly on the motor.

If the fan makes a rattling noise, the blades may be loose. Tighten any visible screws, but be gentle – overtightening can strip the screw holes.

5. Reassemble and Test

Put the filter back in place, re‑attach the duct, and secure the fan cover. Plug the unit back in and turn it on. You should feel a noticeable increase in suction within a few seconds.

Make a habit of cleaning the filter every 1‑2 months if you cook often, and at least twice a year for bathroom fans. Regular maintenance prevents costly repairs and keeps your home fresh.

Now you have a quick, affordable routine to keep your extractor fan at peak performance. A clean fan means less odor, lower energy use, and a longer life for the whole system.