What Is CFM For Range Hoods
Written by webtechs

What Is CFM For Range Hoods

What Is CFM For Range Hoods

We all know kitchen range hoods that vent to the outside are fantastic at removing odors, moisture, heat and smoke from your home when you are in the kitchen. Range hood fans are measured by the cubic feet they move per minute, otherwise known as CFM. Therefore, it is vital to have a range hood that moves air sufficiently enough to be effective. Read on to learn more about the different ways you can work out the CFM for a range hood.

Determining Fan Size

The professsionals say the fan size of a range hood should be enough to move at least 100 CFM of air for every 12 inches (30 centimeters) of stove width. For a 30 inch wide stove, your range hood fan will need to move at least 250 CFM of air.

Kitchen Size

You also need to consider your kitchen size measured in cubic feet when you need to calculate the saizre of the fan you need. Obviously, a larger kitchen needs more venting to clear the air than a room that is smaller. To calculate cubic feet you multiply the length of the room by the width of the room by the height of the room.

A good range hoos will exchange the air in the kitchen at least 15 times per hour, working out at every four minutes, so the next equation would be to take the cubic feet of the room and divide it by 4 equalling the CFM of the range hood fan: Here is an example: 2,000 cubic foot room ÷ 4 minutes = 512 CFM range hood fan or higher.

Gas Stoves

Gas burners on a stove provide considerably more heat than electric stove burners, therefore a gas stove obviously needs a range hood vent fan with a larger capacity.

When calculating the fan size you will need if you have a gas stove, combine the BTU (British Thermal Units) ratings for all the burners on the stove andthen divide by a total of 100 and you will be able to work out the minimum CFM you will need. For example: The average gas burner gives off 10,000 BTU and there are four on stove, so, 40,000 ÷ 100 = 400 CFM.

Ductwork

The cap, turns, length, size and shape on the range hood ductwork adds resistance which reduces the amount of air the vent fan can move, requiring additional CFM for the fan, itself. If you are using a metal pipe with a diameter of 8 inches, add one CFM for every one foot of pope plus 25 CFM for each elbow and 40 CFM for a roof cap.

Final Calculation

To make the final calculation, take the larger of the CFM rating for stove width, room size, and stove burner. Add the additional CFMs needed for the ductwork to arrive at the minimum CFM range hood to buy.

GET A KITCHEN RANGE HOOD QUOTE IN MESA HERE!

Are you thinking about installing a kitchen range hood in Mesa, Arizona? MK Remodeling offers professional and affordable remodeling services including kitchen remodeling in many areas of the Phoenix, Arizona area.

Ducted-vs-Ductless-Range-Hoods
Written by webtechs

Ducted vs Ductless Range Hoods

Ducted-vs-Ductless-Range-Hoods

A quality kitchen range hood can really enhance your enjoyment of cooking, and improve the air quality in your home and kitchen. Range hoods come in two kinds, ductless and ducted. Read on to learn more about the pros and cons of each kitchen range hood type.

Ducted Range Hoods Pro’s And Cons

  • Pro: Ducted hoods are very common although there can be limitations on where they can be installed in a kitchen because the duct has to be able to remove air from the kitchen environment.
  • Pro: Ducted hoods are often found in commercial kitchens and homes with larger ranges producing a great amount of fumes, smoke and unclean air that needs to be cented to the outside.
  • Pro: Highly efficent at removing humidity and steam from the kitchen and as they are not recircualting or filtering air but are actually venting the air from the kitchen.
  • Pro: They are often quieter and more efficent. Some argue this can be debatable as it is dependent on the brand, model, size and the maintenance of the range hood.
  • Con: Space can be greatly limited where the cooking range and hood can be located so the duct system has to be positioned where one has already been installed to force air from the kitchen.

What Are Ductless Range Hoods?

Able to be installed in just about any location, ductless hoods do not need to vent to the exterior of the home and do not need to be installed where a duct is already located.

Ductless Range Hoods Pro’s And Cons

  • Pro: A ductless range hood has greater versatility and instalaltion is simple in just about anywhere in your kitchen. Because these types of hoods filter and recirculate the air of your kitchen, it is not mandatory to install them near duct or pipe that reaches the outside.
  • Pro: As well as the simplicity of installation, many ductless models have programmable timers that turn on or off automatically when they detect odors or smoke.
  • Con: Ductless hoods recirculate air after filtering as opposed to pulling in fresh air or pushing out unclean air. So your kitchen may become fairly humid. They are also sometimes noisier than ducted models.
  • Con:  Filters are required to be cleaned and replaced on a frequent basis so the performance of the ductless range hood is optimized. This may mean result in greater out of pocket expenses.

To Duct or Not To Duct, That is The Question

You have a choice of a ductless range hood or a traditional ducted range hood. Certainly ducted range hoods are in the long run more cost-effective and efficent in their performance but lack the adaptibility of ductless hoods. Commercial kitchens are far more likely to choose ducted range hoods but both options are reasonable propositions for residential kitchens.

GET A KITCHEN RANGE HOOD QUOTE IN MESA HERE!

Are you thinking about installing a kitchen range hood in Mesa, Arizona? MK Remodeling offers professional and affordable remodeling services including kitchen remodeling in many areas of the Phoenix, Arizona area.