Range hood mounting height is the distance from the cooking surface to the bottom of the hood, given as a minimum and a maximum in the hood's installation guide. It's specified because a hood mounted too low sits in the heat and grease of the burners, and one mounted too high lets smoke and steam escape before it reaches the filters.
What the spec actually says
General guidance from Whirlpool Corporation brands gives ranges by fuel type:
- •KitchenAid: For gas cooktops, the range hood is typically recommended 24 to 30 inches above the stove, and for electric, 20 to 24 inches. KitchenAid gives 18 to 22 inches for induction, at least 24 inches (electric) or 27 inches (gas) for island hoods, and no more than 36 inches between the cooktop and the hood. It says to always defer to the specific instructions in the owner's manual.
- •Whirlpool: Whirlpool's sizing article gives the same 20 to 24 inches for electric and 24 to 30 inches for gas, with no more than 36 inches for either. It adds that a hood should be at least as wide as the cooking surface, preferably 3 inches wider on each side, and to check the product manual and local building codes.
A specific model can be stricter:
- •KitchenAid KXW8730Y, KXW8736Y and KXW8748Y (commercial-style wall-mount canopy hoods): The dimension guide sets the distance from the cooking surface to the bottom of the hood at a minimum of 24 inches over electric and 30 inches over gas, with a suggested maximum of 36 inches.
So general ranges are a starting point. The guide for your hood decides.
Why manufacturers require it
- •Gas needs more room: Open flames and hot grates put more heat straight up than electric or induction elements, so gas minimums are higher.
- •Induction runs coolest: Induction heats the pan, not the surface, which is why its suggested range is lowest.
- •Capture drops with height: Above about 36 inches, rising smoke spreads out before it reaches the hood.
- •Width helps capture: A hood wider than the cooktop catches plumes that drift sideways from the outer burners.
- •Island hoods: With no wall behind, air moves around them more, which is why their figures differ.
How to check your home against it
- Identify your cooktop type: gas, electric radiant or coil, or induction.
- Find the installation guide for your hood model and note its minimum and maximum heights.
- Measure from the cooking surface (the grates on gas) to the bottom edge of the hood.
- Compare the hood's width with the cooktop's width.
- For a canopy or chimney hood, measure the ceiling height too. Duct covers come in fixed lengths that need a minimum and maximum ceiling height.
- Note whether an over-the-range microwave is involved instead; it follows its own rules.
What happens when it's ignored
- •Too low: the hood's underside and filters get very hot, grease can build up faster, and taller cooks hit their heads.
- •Too high: smoke and steam escape into the kitchen, and odors linger.
- •Too narrow: plumes from front and outer burners bypass the hood.
Height is only half of performance. See range hood duct size.
When it needs a licensed pro
- •A hood needs power. The KitchenAid canopy hood guide calls for a 120-volt, 15-amp circuit, and adding one is work for a licensed electrician.
- •Running ductwork through a wall, ceiling or roof is a job for a contractor or HVAC installer.
- •Some building codes set rules for high-airflow hoods, such as makeup air. Ask your building department what applies before buying a large hood.
Sources
- •KitchenAid: What is the right range hood height above a stove? (gas, electric, induction and island ranges; 36-inch limit)
- •Whirlpool: Range hood dimensions (20 to 24 and 24 to 30 inches; width; codes)
- •KitchenAid KXW canopy hood dimension guide (24-inch electric and 30-inch gas minimums; 36-inch suggested maximum)
Quick check: Over gas, a hood below 24 inches is too low by every source here. Above 36 inches is too high for any fuel.
Range hood problems over a range, from a dead fan to a hood that can't keep up, are on our range repair page. Or call TrueFix Long Island at (631) 985-3690.