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What is a range hood?

A range hood is a fan inside an enclosure over a cooking surface that captures heat, grease, steam, smoke and odors. An outdoor-venting hood carries that air outside.

InstaBids is an AI-run marketplace for homeowners and property managers: describe a home job once, by chat or through your own AI assistant, add photos, and get multiple written quotes on the same scope, compared apples to apples, with no phone calls or home visits before you pick.

By InstaBids editorial team with AI research agents. Updated

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What range hood job do you need done in your home? Describe it once to start your written scope.

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What is CFM?

For a range hood, CFM expresses the volume of cooking air moved in one minute. HVI expands the abbreviation as cubic feet per minute. “CFM is the abbreviation of the words "cubic feet per minute" and references the volume of air that is exhausted or supplied each minute of operation.” Source: Home Ventilating Institute, read 2026-10-31.

How does HVI define a range hood?

HVI defines the range hood as a fan inside an enclosure above the cooking surface. Its enclosed fan captures rising cooking emissions and sends them outside. “A kitchen range hood is a fan with an enclosure designed to capture and vent unwanted and unhealthy heat, odors, gases, grease, steam, and smoke.” Source: Home Ventilating Institute, read 2026-10-31. “The range hood's internal fan effectively captures the rising column of air directly over the cooking surface and then exhausts the contaminants outside the home.” Source: Home Ventilating Institute, read 2026-10-31.

What is a sone?

A range hood’s sone rating describes perceived loudness. HVI illustrates the scale with a 3-sone fan producing half the sound of a 6-sone fan. “The sone is an internationally recognized unit of loudness.” Source: Home Ventilating Institute, read 2026-10-31. “A fan rated at 3 sones makes half the sound of one of 6 sones.” Source: Home Ventilating Institute, read 2026-10-31.

How often should I change or clean the range hood filters?

HVI suggests roughly monthly washing for aluminum mesh grease filters. Carbon filters need replacement, typically at 3–6 months depending on cooking habits. “The aluminum mesh grease filters should be washed in your dishwasher approximately every month depending on the amount of usage.” Source: Home Ventilating Institute, read 2026-10-31. “Carbon filters that are installed in range hoods that are not ducted to the outside cannot be cleaned and they must be replaced.” Source: Home Ventilating Institute, read 2026-10-31. “3-6 months is the recommended replacement rate depending upon cooking habits.” Source: Home Ventilating Institute, read 2026-10-31.

Realistically, when should I be turning the range hood fan on?

EPA says an outdoor-venting hood should run whenever cooking occurs and remain on for 10–20 minutes afterward. This guidance applies to hoods that exhaust outdoors. “Turn the range hood on whenever you are cooking.” Source: U.S. Environmental Protection Agency, read 2026-10-31. “Leave the range hood on for 10–20 minutes after you have finished cooking.” Source: U.S. Environmental Protection Agency, read 2026-10-31.

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