If your kitchen range hood has started making more noise than usual, or you notice that cooking smells aren’t being whisked away like they used to, there’s a good chance the filter is overdue for a cleaning. Many homeowners forget about this simple maintenance task, but keeping that filter clean is one of the easiest ways to extend the life of your hood and improve your indoor air quality. The best part? You probably already have everything you need in your kitchen to get the job done.

First, let’s talk about why this matters. Your range hood works by pulling grease, smoke, and odors up through a metal mesh or baffle filter. Over time, that filter gets coated with a sticky layer of grease and cooking residue. When it’s clogged, the fan has to work harder, which means more noise, less airflow, and a motor that wears out faster. A dirty filter can also become a fire hazard because grease is highly flammable. And if your hood recirculates air back into the kitchen rather than venting outside, a filthy filter means you’re blowing dirty air right back into your living space. Cleaning it regularly is a small task that makes a big difference.

So how often should you clean it? For most households, every one to three months is plenty. If you cook a lot of greasy foods, like frying bacon or stir-frying, aim for monthly cleanings. If you only use the stove occasionally, every three months should keep things in good shape. The key is to check the filter visually. Hold it up to the light. If you can’t see light through the mesh, it’s time to wash it.

Start by turning off the range hood and unplugging it if possible. Most filters are held in place by a simple latch or a few screws. Slide or lift the filter out carefully—it may be greasy, so have a drop cloth or old towel ready underneath. Place the filter in your sink or a large basin. If it’s really greasy, you can use a degreaser or dish soap. Some people prefer baking soda and vinegar for a more natural approach, but plain hot water and a good dish soap will do the trick.

Fill the sink with very hot water and add a generous squirt of dish soap. Let the filter soak for ten to fifteen minutes. This loosens up the hardened grease. After soaking, scrub the filter gently with a soft brush or an old toothbrush. Avoid using anything too abrasive that could damage the metal mesh. Pay attention to the corners and edges where grease tends to build up. Rinse thoroughly with hot water and shake off the excess. For particularly stubborn grime, you can make a paste of baking soda and water, apply it to the filter, let it sit for five minutes, then scrub and rinse.

If your filter is dishwasher safe—most metal mesh filters are—you can simply place it in the top rack of your dishwasher and run a hot cycle. Just be sure to check your owner’s manual first. Some dishwasher detergents can discolor aluminum filters, so it’s a good idea to use a gentle cycle. Either way, after cleaning, let the filter dry completely before putting it back. A wet filter can attract more dust and might even cause rust over time. You can pat it dry with a clean towel or leave it in a warm place for an hour.

While the filter is out, take a moment to wipe down the interior of the range hood. Use a damp cloth with a little degreaser to clean any grease buildup on the fan blades and inside the housing. This keeps the entire system running smoothly. Once everything is dry, slide the filter back into place and secure it. Turn the hood back on and you’ll instantly notice a difference. The fan will sound quieter, the airflow will feel stronger, and your kitchen will smell fresher.

A clean range hood filter is one of those little maintenance jobs that pays off every time you cook. It saves you money by preventing premature motor failure, reduces the risk of kitchen fires, and keeps your home’s air cleaner for you and your family. Setting a reminder on your phone every couple of months to check and clean the filter takes only a few minutes but delivers long-lasting benefits. Your range hood will thank you, and so will your lungs.