How to Choose a Range Hood That Actually Keeps Your Kitchen Clean
Choose a range hood by matching the mounting style to your cabinet layout (under-cabinet, wall-mount, island, or insert), deciding whether you can duct to the outside or need a ductless recirculating model, and then picking a CFM rating that keeps pace with your cooktop's heat output. Width should equal or exceed your cooktop. Nail those four points and the rest is preference.
Mounting Style: The First Decision to Make
Under-cabinet hoods mount beneath a wall cabinet directly over the range and are the default in most American kitchens. Wall-mount canopy hoods attach to the wall above the cooktop when there is no upper cabinet in that space, they serve both as ventilation and a visual anchor in the kitchen. Island hoods hang from the ceiling over a cooktop built into a kitchen island; they require a duct path through the ceiling and tend to be heavier and pricier. Insert hoods (also called liner hoods) are bare mechanical units designed to slide inside a custom cabinet enclosure, so the cabinetry does the decorating. Pick the style that fits your actual cabinet layout before you look at CFM ratings or finishes, because changing your mind after ordering means returning a 40-to-70-pound appliance.
Ducted vs. Ductless: Which Ventilation Type Fits Your Kitchen
A ducted range hood exhausts air, grease, steam, heat, and odors, outside the house through a duct run to an exterior wall or the roof. This is the most effective ventilation you can get. A ductless or recirculating hood pulls air through a charcoal filter and pushes it back into the kitchen; it traps some grease and reduces odors but cannot remove heat or humidity. If you have any feasible duct path to the outside, go ducted. Ductless is a legitimate choice in apartments or condos where cutting through walls is not allowed, but plan to replace the charcoal filter every three to six months or performance drops off sharply. Convertible models, like the Broan-NuTone 413001 (ASIN B0002YTLZY), one of the best-selling under-cabinet hoods on the market with over 20,000 buyer ratings, ship set up for recirculation and can often be adapted for exhaust with a duct kit, giving you flexibility based on your install situation.
CFM: Matching Airflow to Your Cooktop
CFM (cubic feet per minute) is the number that determines whether a range hood keeps up with your cooking or falls behind. For gas cooktops, 100 CFM per 10,000 BTU of total burner output is a widely used starting point, a four-burner gas range with 40,000 to 50,000 BTU total calls for 400 to 500 CFM minimum. For electric or induction cooktops, 300 to 400 CFM handles everyday cooking comfortably. High-heat styles, wok cooking, deep frying, heavy searing, push the need higher, and 700 to 900 CFM is reasonable for that use case. The Hauslane PS-18 (ASIN B06XWFPJLH) is a 36-inch under-cabinet ducted hood rated at 860 CFM with six fan speeds and an ENERGY STAR certification, making it a strong fit for home cooks who cook at high heat regularly. Going dramatically over your actual need creates its own problems: excess draw can back-draft combustion appliances in tight homes and runs up electricity bills.
Width: Size the Hood to Your Cooktop, Not the Other Way Around
A range hood should be at least as wide as the cooktop underneath it. Steam and grease drift outward as they rise, so a hood that extends two to four inches beyond the cooktop edges on each side captures more of what a flush-width hood lets escape. Standard cooktops come in 30- and 36-inch widths, and most residential hoods match those same dimensions. If you cook on a 36-inch gas range, a 30-inch hood leaves the outer burners exposed. Island installations need even more overhang because there are no walls to contain rising air. Measure your cooktop first, then shop.
Filter Types: Baffle, Mesh, or Charcoal
Ducted hoods use either baffle filters or mesh filters to trap grease before it enters the ductwork. Baffle filters are angled stainless steel panels that force air through a serpentine path, causing grease to condense and drain into a collection channel. They handle heavy cooking loads well, clog more slowly than mesh, and are typically dishwasher-safe. Mesh filters use layered aluminum mesh to catch grease and work well at moderate cooking frequencies, but need cleaning more often if you cook greasy food daily. The COSMO COS-668ICS750 (ASIN B07LCWYBF7) is an island-mount ducted hood with baffle filters, 3 fan speeds, and digital touch controls, rated 4.4 stars across more than 2,300 buyers, and represents a good example of a mid-range ducted hood built for real cooking rather than light occasional use. Ductless models require a charcoal layer on top of the grease filter to absorb odors; charcoal cannot be washed and must be replaced on schedule.
Fan Speeds, Noise, and Controls
More fan speed settings give you finer control: run a low speed for simmering, step up to higher speeds for searing or frying. Two speeds is the minimum for basic use; four to six speeds suits kitchens where you cook at a wide range of intensity levels. Noise is measured in sones, most range hoods run quieter on low speeds and loudest on high, and anything above 6 sones at high speed starts to drown out kitchen conversation. Touch controls look cleaner but can be harder to operate with greasy hands; push-button controls are blunter but reliable. LED lighting under the hood, which illuminates the cooktop surface, is standard across most price points now and worth having regardless of budget.
Common mistakes to avoid
- Buying a hood narrower than the cooktop and leaving outer burners completely uncovered
- Choosing ductless when exterior ductwork is feasible, then being disappointed by lingering odors
- Picking a hood based on looks and ignoring CFM, then finding it undersized for the actual cooktop
- Mounting the hood too high above the cooktop, which lets grease and steam spread before being captured
- Skipping filter maintenance, clogged mesh or charcoal filters cut airflow significantly and can be a fire hazard
- Forgetting to account for duct run length and bends, which reduce effective CFM well below the hood's rated output
Frequently asked questions
How wide should a range hood be?
At minimum, the hood should match the width of your cooktop or range. Ideally it extends two to four inches beyond each side to catch steam and grease that drift outward as they rise. For a 30-inch range, a 30-inch hood is the baseline, but a 36-inch model gives you noticeably better capture. For island cooktops, size up even more since there are no surrounding walls to contain the rising plume.
Is a ducted or ductless range hood better?
Ducted is better whenever you can route a duct to the outside, it exhausts grease, heat, humidity, and odors completely rather than recirculating them. Ductless recirculating hoods reduce odors through charcoal filters but cannot remove heat or moisture, and they require filter replacements every few months. For any kitchen where exterior venting is possible, the long-term air quality difference makes ducted the right call. Ductless is a practical fallback, not a preference.
How many CFM do I need for a gas range?
A common rule of thumb is 100 CFM per 10,000 BTU of total burner output. A typical four-burner residential gas range with 40,000 to 60,000 BTU total calls for 400 to 600 CFM. If you use high-output burners or cook at maximum heat regularly, lean toward 600 to 900 CFM. For light everyday use on a standard gas range, 400 CFM is usually sufficient.
How high above the stove should a range hood be mounted?
Most manufacturers specify 24 to 30 inches above an electric or induction cooktop and 27 to 36 inches above a gas range. Mounting too low creates a fire risk on gas and makes cooking uncomfortable. Mounting too high lets grease and steam spread before the hood can capture them. Always check the installation manual for your specific model, height requirements vary, and exceeding the maximum can affect how well the hood performs.
How often do range hood filters need to be cleaned or replaced?
Baffle and mesh grease filters in ducted hoods should be cleaned every one to three months depending on how often you cook; many are dishwasher-safe. Charcoal filters in ductless hoods cannot be washed and need to be replaced every three to six months. A grease-saturated filter cuts airflow, reduces the hood's effectiveness, and can become a fire hazard, filter upkeep is one of the most important ongoing tasks after installation.