A kitchen hood—also called a range hood, vent hood, cooker hood, or extractor—captures the smoke, grease, steam, odors, and combustion pollutants that rise off your cooktop and clears them from your kitchen air. Choosing the right one comes down to two questions more than any other: where does your cooktop sit, and can you vent outdoors? Those answers point you to a hood type and a venting method, and everything else—size, power, and features—follows from there. This guide is your overview: how a kitchen hood works, the main types and who each suits, ducted versus ductless, and how to choose. When you’re ready to compare models, you can browse the full kitchen range hood collection.
What a kitchen hood does
Cooking releases far more than visible smoke. High heat and oil produce fine particles (PM2.5) and ultrafine particles, gas burners add nitrogen dioxide and carbon monoxide, and every meal sends grease aerosols and moisture into the air. A kitchen hood intercepts that plume at the source—before it spreads through your home, settles on surfaces, or reaches your lungs. A good hood keeps your kitchen cleaner, protects your indoor air quality, reduces lingering odors, and helps your cabinets and walls stay grease-free. It only works, though, if it’s sized correctly and you run it every time you cook.
How a kitchen hood works
Nearly every kitchen hood follows the same three-step process:
- Capture. A canopy or collection screen positioned over the cooktop catches the rising plume. The larger and closer the capture area, the more it traps—this “capture efficiency” matters as much as raw power.
- Filter. Air passes through metal baffle or mesh grease filters that trap oil droplets (most are dishwasher-safe).
- Exhaust or recirculate. A ducted hood pushes the filtered air outdoors; a ductless hood passes it through a charcoal filter to reduce odors and returns it to the room.
The main types of kitchen hoods
“Type” mostly describes how and where the hood mounts. Here are the five you’ll encounter, with who each suits best.
1. Under-cabinet kitchen hood
Best for: most kitchens with cabinets above the stove.
The most popular style, an under-cabinet hood mounts beneath the wall cabinet directly above your cooktop, using otherwise-wasted space and keeping the wall clean. It suits standard 30-inch and 36-inch cooktops, installs more simply than other types, and comes in ducted, ductless, and convertible versions. Explore options in the under-cabinet range hood collection.
2. Wall-mount (chimney) kitchen hood
Best for: kitchens with no cabinet above the stove, where the hood is a design feature.
A wall-mount hood—often called a chimney hood—mounts directly to the wall above the cooktop, creating a dramatic focal point. Because there’s no cabinet limiting its shape, it can use a large canopy for excellent capture. Tip: choose one 3–6 inches wider than your cooktop for the best coverage. See the wall-mount range hood collection.
3. Island kitchen hood
Best for: cooktops set into a kitchen island.
When your cooktop is in a freestanding island, you need an island hood suspended from the ceiling, offering 360-degree capture from all sides. These are statement pieces and require secure structural mounting—professional installation is essential, and ducting typically runs straight up through the roof. (Ceiling-mount canopy and downdraft styles both work for islands.)
4. Built-in / insert kitchen hood
Best for: a seamless, hidden look in custom cabinetry.
A built-in hood (or insert) is just the internal motor-and-filter unit, installed inside a custom cabinet or soffit so only a slim vent panel shows. It delivers full power while disappearing into your design—but installation usually needs both a licensed installer and a cabinetmaker. Browse the built-in range hood collection.
5. Downdraft / retractable kitchen hood
Best for: unobstructed views, low ceilings, or a hood that hides when off.
Downdraft vents rise from behind or beside the cooktop and retract when not in use; overhead retractable hoods descend from an upper cabinet. Both prioritize a clean, hidden look. Because they pull fumes sideways or downward rather than catching a naturally rising plume, well-powered models matter most here. See the retractable range hood collection.
| Type | Where it mounts | Best for | Venting |
|---|---|---|---|
| Under-cabinet | Beneath a wall cabinet | Most kitchens | Ducted or ductless |
| Wall-mount (chimney) | On the wall, no cabinet above | Statement kitchens | Ducted; often convertible |
| Island | Suspended from ceiling | Island cooktops | Ducted up through roof |
| Built-in / insert | Inside custom cabinet/soffit | Seamless, hidden look | Ducted or ductless |
| Downdraft / retractable | Rises from behind cooktop | Unobstructed views | Ducted |
You may also see over-the-range microwaves that combine a microwave with a vent fan. They save space but generally vent less effectively than a dedicated hood—worth knowing if air quality is a priority.
Ducted vs. ductless: the other big choice
Cutting across every type is the venting method. A ducted (vented) hood sends air outdoors and is the most effective option—it physically removes grease, smoke, combustion gases, heat, and humidity from your home. A ductless (recirculating) hood filters air through charcoal and returns it to the room; it installs almost anywhere, making it ideal for apartments and interior kitchens where outdoor venting isn’t possible. The trade-off: ductless models reduce odors and grease but are less effective at removing gases, and they add the recurring task of replacing charcoal filters. If you can duct outdoors, do; if you can’t, choose a convertible or purpose-built recirculating model. Browse flexible options in the ductless range hood collection.
How to choose the right kitchen hood
- Match the size to your cooktop. The hood should be at least as wide as the cooktop; wall-mount and island hoods perform best 3–6 inches wider on each side.
- Get enough power (CFM). Light cooking suits 400–600 CFM; frequent high-heat or wok cooking wants more. For gas, a common rule is to divide your total BTUs by 100 to get a minimum CFM.
- Prioritize capture efficiency. A large collection screen positioned close to the burners often clears smoke better than a higher-CFM hood with a small intake.
- Check the noise rating. Compare sones (or decibels) at a normal cooking speed—aim for under about 3 sones so you’ll actually run it. Modern BLDC motors deliver strong airflow quietly.
- Look for smart, low-maintenance features. Auto-sync (which starts the hood when you turn on the cooktop), gesture controls, dishwasher-safe baffle filters, and non-stick interiors all help.
- Choose a finish that fits. Stainless, black, and glass all perform identically—finish is about style, not power.
Where ROBAM fits
ROBAM has specialized in kitchen ventilation since 1979, engineering hoods across every type with high-efficiency BLDC motors (models span roughly 850 to 1,500 CFM), oversized capture screens, patented A++ filters that separate about 98% of grease, and a wash-free, non-stick interior design. Many models add gesture control and R-Link, which links a compatible ROBAM cooktop to the hood so ventilation starts the moment you light a burner. Whether you need a discreet under-cabinet unit, a statement chimney, or a seamless insert, there’s a configuration to match your layout and cooking style.
The bottom line
A kitchen hood is one of the most important appliances for a clean, healthy kitchen—and the right choice starts with your cooktop’s location and your ability to vent outdoors. Pick the type that fits your layout, size it to your cooktop with enough CFM, favor strong capture and a quiet motor, and vent outside whenever possible. Start by exploring the full kitchen range hood collection to find the type and model that fit your home.
Frequently asked questions
Is a kitchen hood the same as a range hood?
Yes. “Kitchen hood,” “range hood,” “vent hood,” “cooker hood,” and “extractor” all refer to the same appliance: a device mounted over the cooktop that captures and removes cooking smoke, grease, and odors.
What are the main types of kitchen hoods?
The five main types are under-cabinet, wall-mount (chimney), island, built-in/insert, and downdraft/retractable. They differ mostly in how and where they mount; most are available in both ducted and ductless versions.
Should I get a ducted or ductless kitchen hood?
Ducted is more effective because it removes grease, smoke, and gases from your home entirely. Ductless is the practical choice when outdoor venting isn’t possible, such as in apartments—just plan to replace charcoal filters regularly.
What size and CFM kitchen hood do I need?
Match the hood to your cooktop width at minimum, going wider for wall-mount and island styles. For power, 400–600 CFM suits everyday cooking; for gas, divide total BTUs by 100 for a minimum CFM, and step up for heavy high-heat cooking.
Do I really need a kitchen hood?
If you cook regularly—especially with gas or at high heat—yes. Cooking releases fine particles, grease, moisture, and (on gas) combustion gases, and a hood is the most effective way to capture them at the source before they spread through your home.
Type definitions, sizing, and installation guidance reflect widely used kitchen-ventilation best practices; always follow your specific model’s manual, and use a licensed professional for ducted, island, and built-in installations. ROBAM product figures reflect published specifications and vary by model—confirm details and current pricing on each product page.
