Key takeaways
- Check cabinet width: Measure the clear opening between side panels, not just the door fronts. A 30-inch hood may need additional space for mounting or trim.
- Check depth: Compare the hood body and front edge with the cabinet depth. A hood that sits too far back may miss rising smoke from front burners.
- Check height: Include the hood housing, mounting bracket, and the required space above the cooktop. Make sure the controls and filters remain reachable.
- Check the route: Locate the duct outlet, wiring, cabinet shelves, and any pipes before drilling or cutting.
- Check support: Attach the hood to suitable cabinet framing or wall structure as directed; thin cabinet panels alone may not be adequate.
The best under-cabinet range hood depends on your cooktop width, cooking habits, and whether you can vent outdoors.
For most kitchens, choose a ducted hood as wide as the cooktop—or wider if the cabinet layout allows—with roughly 100 CFM per linear foot of cooking surface as a starting point. A 30-inch cooktop typically pairs with a 30-inch hood rated around 300–600 CFM. If you cannot install a duct, a recirculating model with effective, replaceable charcoal filters is the practical alternative, though it will not remove moisture and heat as well as outdoor venting.
Choose by kitchen situation
| Your situation | What to look for | Why |
|---|---|---|
| 30-inch cooktop, everyday cooking | 30-inch hood; about 300–600 CFM; ducted if possible | Fits the common cooktop width and provides useful capture without automatically choosing an oversized blower. |
| Frequent frying, searing, or wok cooking | Hood at least as wide as the cooktop; higher airflow, a deep capture area, and a 6-inch duct where specified | Smoke and grease rise quickly and can spread beyond a shallow hood. Strong airflow needs a duct sized for the unit. |
| Small apartment with no exterior duct | Convertible or recirculating hood with available charcoal filters | It can capture grease and reduce some odors, but returns air to the room rather than exhausting heat and humidity. |
| Open-plan kitchen or noise-sensitive household | Several fan speeds, a useful low setting, and a clearly published sound rating | Maximum power is not needed for every meal. A lower setting can make routine ventilation more comfortable. |
| Cabinet space is tight | Check the hood’s height, depth, duct outlet position, and required cooktop clearance before buying | Nominal width alone does not confirm that the housing or duct will fit beneath the cabinet. |
Width, airflow, and noise: compare the specifications together
Under-cabinet hoods are commonly sold in 24-, 30-, and 36-inch widths. Measure the actual cooking surface and the available space between cabinets. The hood should generally be at least as wide as the cooktop; a wider hood can improve capture when space and cabinetry permit. Avoid choosing by width alone: a broad hood with a shallow underside may capture less effectively than a well-designed model of the same width.
CFM (cubic feet per minute) describes the volume of air a hood can move under specified conditions. It is not a direct measure of capture quality, and duct bends, long runs, and undersized ducts can reduce real airflow. For a typical 30-inch electric or induction cooktop, about 300–600 CFM covers many household needs. Gas ranges and high-heat cooking may call for more, but check the range manufacturer’s guidance and local code. In the United States, systems above 400 CFM can trigger makeup-air requirements under applicable codes; confirm requirements with your local building department or installer.
| Cooktop width | Common hood width | Useful starting airflow for ordinary cooking | Typical duct consideration |
|---|---|---|---|
| 24 inches | 24 or 30 inches | About 200–400 CFM | Often 6 inches; follow the hood manual |
| 30 inches | 30 or 36 inches | About 300–600 CFM | Often 6 inches; higher-capacity models may require larger ducting |
| 36 inches | 36 inches or wider | About 400–700 CFM | May require 6- or 8-inch ducting, depending on the model |
These figures are planning ranges, not code requirements or guarantees. A hood’s installation manual takes precedence, especially for duct diameter, maximum duct length, and elbow limits. Before purchase, trace the proposed route to an exterior wall or roof. A short, smooth, straight duct usually performs better and sounds quieter than a long route with several sharp turns.
Noise specifications are often given in sones or decibels, and ratings are not always measured the same way. Compare the stated sound level at similar fan settings—not just the maximum. A hood may be quite usable on low speed but loud at its highest setting. If sound matters, look for multiple speeds and a published rating for each, and ask whether the rating is measured at the hood or under a standardized test condition.
Ducted versus recirculating: the decision that changes performance
Ducted
A ducted hood sends air outdoors, carrying smoke, airborne grease, odors, heat, and moisture away from the kitchen. It is usually the better choice for frequent cooking, gas ranges, and open-plan spaces. It needs an exterior route, correctly sized ductwork, and a compatible outlet location. Do not reduce a duct below the size specified by the manufacturer to squeeze it into a cabinet; added resistance can undermine airflow and increase noise.
Recirculating
A recirculating hood draws air through grease filters and charcoal or carbon filters, then returns it to the room. It can be suitable where an exterior duct is impossible, such as many apartments, but it does not remove cooking moisture or heat. Confirm that the exact model supports recirculation and that its charcoal filters are available and replaceable. Grease filters also need regular cleaning, while charcoal filters need periodic replacement according to the manufacturer’s schedule.
Some models are convertible, but conversion may require a separate kit or filters. Check what is included and where the filtered air exits; cabinetry or a backsplash should not block the outlet.
Measure cabinet clearance before ordering
Measure from the cooking surface to the bottom of the hood, then compare the result with the range and hood manuals. Minimum and maximum installation heights vary by appliance, and gas ranges may require more clearance than electric or induction models. Do not use one universal clearance figure: follow the stricter requirement if the two manuals differ, and consult the appliance makers or a qualified installer if the requirements conflict.
- Check cabinet width: Measure the clear opening between side panels, not just the door fronts. A 30-inch hood may need additional space for mounting or trim.
- Check depth: Compare the hood body and front edge with the cabinet depth. A hood that sits too far back may miss rising smoke from front burners.
- Check height: Include the hood housing, mounting bracket, and the required space above the cooktop. Make sure the controls and filters remain reachable.
- Check the route: Locate the duct outlet, wiring, cabinet shelves, and any pipes before drilling or cutting.
- Check support: Attach the hood to suitable cabinet framing or wall structure as directed; thin cabinet panels alone may not be adequate.
Also consider cabinet material and finish. A powerful hood does not make nearby surfaces immune to heat or steam. Keep the required clearance, protect surrounding finishes as the range manufacturer recommends, and avoid storing items where they can obstruct the hood’s intake or duct path.
What to compare when choosing a model
Among established brands, Broan-NuTone, GE, Whirlpool, and Hauslane offer under-cabinet options in different widths and configurations. Rather than treating one brand as the best fit for every kitchen, compare the exact model’s specifications:
- Capture area: Look at the underside dimensions and filter layout, not only the advertised width.
- Fan controls: Two or more useful speeds help balance ventilation and sound during everyday cooking.
- Filters: Stainless-steel or aluminum mesh filters are generally washable; baffle filters are often used on higher-airflow designs. Confirm cleaning instructions and replacement availability.
- Lighting: Check bulb type, brightness, and whether the light illuminates the front burners as well as the back.
- Installation format: Verify whether the model is ducted, recirculating, or convertible, and whether the needed conversion parts are included.
- Controls and cleaning: A smooth underside and accessible filters make routine grease cleanup easier.
Basic under-cabinet hoods commonly fall in the $100–$300 range; quieter, more powerful, or more feature-rich models often run about $300–$800 or more, before installation. Duct work, electrical changes, and cabinet alterations can add considerably to the project, so compare the total installed cost rather than the hood price alone.
Bottom line
For a standard 30-inch cooking surface with an outdoor duct route, start with a 30-inch ducted hood around 300–600 CFM, then prioritize a suitable capture area, manageable sound at everyday speeds, and a duct path that meets the manual. For a kitchen without exterior venting, choose a model explicitly designed for recirculation and budget for replacement charcoal filters. In either case, measure the cabinet and verify the hood-to-cooktop clearance before ordering; those checks matter as much as the headline CFM number.
