How Much CFM Do I Need For Range Hood?

How Much CFM Do I Need For Range Hood?

To ensure good air circulation inside your kitchen while cooking, you should have a good quality range hood. The hot steam and grease must be cleaned out properly instead of settling on your house’s kitchen racks and fabrics.

To vent and suck off all the smoke and grease from your kitchen, you need at least 200 CFM for 10,000 BTUs on your stovetop. The most commonly used range hood is 600 CFM, but this totally depends on your cooking style and the type of stove you use.

What Is CFM?

CFM in the range hood is Cubic Feet of Diffused Air Per Minute; as this number increases, the power of the fan present in the range hood increases too. If the fan has a high range of rotations per minute, the smoke and grease in the air will be less.

this is a cooking hood

How To Determine Perfect Size For Range Hood?

If you use an electric or induction stove, you can choose from 150-300 CMF; if you use flamed burners, you definitely need 400-600 CFM. You need 1000 plus CFM if you have a restaurant or cook larger quantities daily.

Things To Consider While Choosing Range Hood

Range hoods come in many CFM ranges, from low-end 150 CFM to high-end classic chef models with 1000 CFM. There are a bunch of factors to keep in mind while you choose a range hood for your kitchen; let’s get a quick check on what those are below:

  1. Output And Range Types
  2. Dimensions Of The Kitchen
  3. Cooking Style
  4. Ducting Of The Hood

Output And Range Types

As you are familiar with CFM, you could begin searching in your kitchen to locate the quality hood and CFM. Then, start choosing types and places to fix your hood.

So let’s begin with the basics; for an electric or induction-powered cooktop, measure the width of the stove and multiply the dimensions by 10 to find the CFM required for your range hood. So basically, if you have a 30-inch stove, you need a 300CFM range hood.

Gas stoves need bigger hoods as they produce much more smoke and heat than electric ones. So if you have a basic 10,000 BTU stove, you need 100 CFM; just divide the BTUs by 100 to find the right size.

If you use outdoor grills, they need range hoods, too. Basically, you use coal to grill most of the time. It produces much more smoke and fumes than any above so you will need a range hood with more than 600 CFM.

model to put away the air immediately above your cooktop is smooth, you must get a suitable range hood size to create proper kitchen ventilation.

Dimensions Of The Kitchen

While selecting a model to put away the air immediately above your cooktop is smooth, you must get a suitable range hood size to create proper kitchen ventilation.

Properly setting up your vent is important as it removes all the bad air from the kitchen.

So, your kitchen’s dimensions can also be critical in locating the first-rate CFM for you. For example, if your kitchen is 10 feet long, 10 feet wide, and has a ceiling 11 feet high, simply multiply all the numerical dimensions.

So as of the example, it will be 1,100; now divide it by four, so it will be 275. In reality, 275 CFM is the basic requirement for your kitchen. You can choose according to your likes of colors, models, and budget, but not less than 275 CFM.

Cooking Style

Many do not consider this, but it actually needs attention. Say you cook food for 2 people, it only takes a few minutes or hours, and the portion you cook is small. As the potion has fewer fumes and less smoke, imagine cooking for 10 people. You need at least 2 hours to complete the course; by then, you will be surrounded by heat and fumes.

If you steam your food and saute it in skillets, it produces minimal heat to the surroundings. However, you will have grease and heat if you cook on a wok or use an indoor grill. So to vent it out, you need a high-capacity roof hood.

Ducting Of The Hood

Ducting in a kitchen facilitates moving the air connecting your hood to the outside of your home. Unfortunately, the width of these pipes is inversely proportional to the CFM. Therefore, you need wider ducting for higher CFMs. Usually, your ducting should be 2 inches higher than the CFM. say you have a 400 CFM roof hood, then your ducting should be from 6 inches to 8 inches.


Different stove tops require different sizes of range hoods. You need to find out the perfect fit for your cooktop by considering the above mentioned steps. Follow the steps to get your required range of CFM, and then buy a range hood that matches the dimensions you require. You can buy any range hood with a little more CFM than the required depending on the design and your budget, but not less than the required.


  1. Should I have a range hood in my kitchen?

Of course, you should definitely have a range hood in the kitchen. They act as a suction to remove all the heat and steam caused by cooking. It also helps to remove odd odors if you cook aromatic sea foods.

  1. Will range hoods make noise?

Yes,  range hoods produce noise while using. However, these are not high-pitched noises, so it is absolutely safe to use.

  1. Are range hoods with filters good?

Filters inside the range hood come with many advantages. They can quickly capture grease from the air but need regular cleaning. You can find removable dishwasher-safe ones on the market.



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