When Should You Replace Your Range Hood Filters (Answered)

Are your kitchen hood filters dirty? Here are the steps you need to take to replace them regularly and maintain optimal airflow in your kitchen.

Do you have a kitchen with a vent hood? If so, you likely have a kitchen hood filter. These filters help to protect your food from contaminants and fumes, and they should be replaced as part of your regular maintenance schedule. But when should you replace your vent hood filters?

This article will teach you what range hood filters are, how they work, and when they should be replaced so you can have a lasting range hood.

If you use stainless steel baffle filters, you won’t ever need to replace them unless they get damaged. If you use mesh filters, you should replace them every few years. You should replace your charcoal filters at least twice a year. If you do heavy cooking, charcoal filters should be replaced every three months or after 120 hours.

Image of a woman replacing a baffle filter on a wall mount range hood. Source: adobe stock
Image of a woman replacing a baffle filter on a wall mount range hood. Source: Adobe Stock

What is a range hood filter?

Range hood filters are accessories that attach to range hoods. They are responsible for cleaning the air, capturing grease from your kitchen, and venting the excess hot air outside of your home or recirculating it if you are on a ductless range hood. Range hood filters can also help to reduce the level of dust and other allergens in the air.

My favorite range hood (at the moment):

COSMO COS-63190S Wall Mount Range Hood

When should you replace your range hood filters (answered) | 71ddmbmvgwl. Ac sl1500 | range hood homeland
My favorite range hood (at the moment):

COSMO COS-63190S Wall Mount Range Hood

This is one of the best hoods available at this price point. Reasonably strong CFM for the cost, and it has received rave reviews (over 3,800 reviews!). It looks great, and the LED lights provide a pleasant brightness. For the price, its performance and style are outstanding. Highly recommended!

How does a range hood filter work?

A range hood filter is designed to trap harmful particles from your kitchen. These particles can include dust, pollen, smoke, fumes, and other irritants. Doing this will make you less likely to be exposed to these harmful substances, and your overall lung health may improve.

Why is a range hood filter so important

Range hood filters are fantastic kitchen aids. They promote healthy ventilation by sucking all the grease and smoke out of the air as you cook. If your range hood has a vent, the filthy air in your kitchen can escape through it. The cleaned air can be recirculated through the charcoal filter if it is ductless.

Filters are critical for reducing the risk of a kitchen fire, but they only work properly when they are clean. Because the filter is “out of sight, out of mind,” it’s easy to overlook. Set a reminder on your phone if necessary, so you don’t forget to take care of it on time. Even if you clean your filter regularly, you will eventually need to replace it.

What are the different types of vent hood filters?

There are three primary types of range hood filters. You will likely have one of these on your unit.

Carbon Filters

Carbon/charcoal filters (also known as charcoal filters) are attachments that fit inside a range hood and filter the kitchen’s recirculated air. Carbon filters are carbon-based materials that collect impurities while neutralizing grease and odors from cooking. They are inexpensive, light, and simple to replace. Unfortunately, carbon filters cannot be washed and must always be replaced.

Mesh filters

Mesh filters aid in the removal of grease and other contaminants from the air in your kitchen. Furthermore, when they become dirty, they can be washed and reused, saving you the trouble and expense of purchasing and storing replacement filters. Some hoods include a grease trap in the blower to catch unwanted contaminants. Mesh filters come in stainless steel and aluminum. Stainless steel filters will last longer and filter grease better than aluminum filters.

Baffle filters

Baffle filters are range hood filters made of stainless steel. When your hood is turned on, these grease filters have three-sided baffles that alternate to improve airflow and grease filtration.
Stainless steel baffle filters have recently increased in popularity, making them a common fixture in both professional and home kitchens. Baffle filters provide superior grease filtering and a lower fire risk rate by preventing flames from entering the intake.

How to choose a good range hood filter?

Shop for range hood filters online and compare prices before making a purchase. You may also want to read reviews before making a decision. Here are a few things to keep in mind when choosing a range hood filter:

  • Ensure that the filter is compatible with your range hood model.
  • Choose a model that is compatible with your home’s ventilation system.
  • Choose a model tested and approved by the EPA.
  • Choose a model designed to remove specific types of particles and gases.
  • Choose a model that is easy to install and maintain.
  • Choose a model that offers warranties or other protection measures.

Range hood filters can be pricey, but they are worth the money if you want to stay healthy and avoid lung problems.

Image of an outdoor kitchen with a stove, sink and drawers. Source: pixabay
Image of an outdoor kitchen with a stove, sink and drawers. Source: pixabay

Why is it important to clean range hood filters

Kitchen hood filters must be cleaned or replaced regularly if your hood is to function properly. They collect grease, dirt, and food particles from your cooking. Grease accumulates on the inside and outside of your hood without clean filters.

Second, keeping your range hood filter clean keeps contaminants and chemicals out of your kitchen. This assists you in maintaining excellent indoor air quality. It is critical that your family has a comfortable and secure living environment.

Finally, the filters eliminate cooking odors. Even the strongest odors from Asian cooking are expelled.

How do you know when your filters need to be cleaned?

First, your filters are probably dirty if you can’t recall the last time you cleaned them. Then, even after running your hood for several minutes, you may notice that smoke remains in your kitchen. This could be because the filter needs to be replaced.

Also, your filters may not be absorbing odors. If cooking odors persist after several days of cooking, inspect your range hood filter. Finally, grease accumulates on your walls, ceiling, or surrounding cabinets.

How do you know when your filters need to be replaced?

When you have a chance, inspect your filters for any damage. Examine the surface for dents, warping, corrosion, excess grime, food debris, or holes. If your range hood filter has warped and no longer fits inside the hood, you should replace it as soon as possible. You don’t want the grease to accumulate inside your hood and in the range hood duct.

How often should you change your range hood filter?

You’re going to hear many different opinions about this question on the Internet. Personally, I say you should change your carbon filters every two years. This allows room for flexibility because, let’s be honest, you’re not going to want to spend so much on filters every three months, as some others recommend. And if you do moderate or light cooking, you don’t need to replace them often. However, if you do heavy cooking, you should replace them a little more often. That’s up to your discretion, of course.

If you have baffle filters, you probably shouldn’t need to replace them. Just give them a good cleaning; if you have mesh filters, they can be damaged over time. So try to replace them every three years or so.

If you want even more tips and insights, watch this video called When To Replace Range Hood Filter? 3 Superb Facts About It from the MilkwoodRestaurant Com YouTube Channel.

A video called When To Replace Range Hood Filter? 3 Superb Facts About It from the MilkwoodRestaurant Com YouTube Channel.

Frequently asked questions (FAQ)

Do you still have questions? Below are some of the most commonly asked questions about replacing range hood filters.

What is a range hood?

A range hood is a kitchen appliance that uses a mechanical fan or blower to remove the space’s steam, smoke, odors, grease, and heat. Range hoods, also known as oven hoods or exhaust hoods, are installed above cooking surfaces to remove grease and steam from the air in the kitchen before venting it outside. Range hoods come in various designs, each catering to a different need or aesthetic preference.

How long do grease filters last?

Filters should be cleaned or replaced every two weeks in most cases. Restaurants that do not use much grease or oil (those that do not fry or broil frequently or at all) can extend the life of their filters by up to 4 weeks.

Can mesh filters be cleaned in the dishwasher?

Yes. You can clean mesh filters in the dishwasher. Range hood filters are made from stainless steel or aluminum, which are dishwasher-friendly. However, your dishwasher might not get all the gunk out of your filters. Therefore, we recommend soaking your filters in soapy water to remove grease.


At the end of the day, your health is more important than anything else. So, you should often change the filters in your kitchen hood to prevent germs from getting into your home. If you do not know how often the filters need to be replaced, just follow these guidelines and replace them as soon as they show signs of dirtiness.

This article covered the range hood filters, how they work, and when they should be replaced. Here are some key takeaways:

Key takeaways

  • Range hood filters can help to reduce the level of dust and other allergens in the air.
  • Range hood filters can be expensive, but they are worth the investment to maintain good health and avoid potential respiratory problems.
  • Filters are critical for reducing the risk of a kitchen fire, but they only work properly when they are clean.
  • Stainless steel is the most common type of filter for hoods.
  • A commercial kitchen should have grease filters because when these are not cleaned, the grease can build up and create a fire hazard.
  • Grease hood filters collect exhaust grease and debris from your kitchen exhaust hood.

So, how often do you replace your range hood? And did I cover everything you wanted to know? Let me know in the comments section below (I read and reply to every comment). If you found this article helpful, check out my full blog for more tips and tricks in your kitchen. Thanks for reading, and stay safe.

Helpful resources

Image Of Roger Harris
Written by Roger Harris, Staff Writer

Hey there! My name is Roger, and I've been selling range hoods for over six years. I now run this blog all about range hoods and kitchen ventilation! If you're looking for a new range hood for your kitchen, this is the place for you.

Yerain Abreu
Edited by Yerain Abreu, Staff Editor

Yerain is our staff editor and co-founder. He has a passion for writing, editing, and website development. His expertise lies in shaping content with precision and managing digital spaces with a keen eye for detail.

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