Match the hood type to your kitchen layout and cooking style

The right vent hood depends on three things: where your stove sits, how much you cook, and what your kitchen can support. A range hood (the box mounted above the stove) works in most kitchens. A downdraft pulls air down through the cooktop itself and works only if your stove is an island or peninsula. A wall-mounted insert fits into cabinetry above a wall stove. A under-cabinet hood hangs beneath a cabinet when space is tight. Start by looking at your stove location—that choice eliminates most options when ready.

Next, decide whether you want the hood to vent outside (ducted) or filter air back into the kitchen (ductless). Ducted hoods remove heat and moisture completely but require ductwork to the exterior wall or roof. Ductless hoods are cheaper and easier to install but need filter replacements every few months and don't remove humidity. If your kitchen gets steamy when you cook, ducted is worth the installation cost. If you rarely cook or have no way to run ductwork, ductless is your only realistic option.

Key Takeaways

  • Your stove location (wall, island, or peninsula) determines which hood types will physically fit and work properly.
  • Ducted hoods remove steam and heat outside; ductless hoods filter air back into the kitchen and need regular filter changes.
  • Measure your stove width and choose a hood at least as wide, preferably 1 to 3 inches wider on each side for best capture.
  • Check your kitchen's electrical setup and ductwork path before buying, because installation costs can exceed the hood price itself.
  • CFM (cubic feet per minute) should be roughly 100 per linear foot of cooktop, so a 30-inch stove needs a hood rated 300 CFM or higher.

Measure the stove width and choose the right hood size

Your hood should be at least as wide as your stove, and ideally 1 to 3 inches wider on each side. A 30-inch stove pairs well with a 30-inch or 36-inch hood. A 36-inch stove works with a 36-inch or 42-inch hood. Undersizing the hood leaves cooking smoke and steam escaping to the sides. Oversizing is fine—a 42-inch hood above a 30-inch stove captures more effectively—but it costs more and takes up more wall or cabinet space.

Measure the distance from the stove surface to the wall or cabinet above it. Most hoods need 24 to 30 inches of clearance. If your kitchen has less space, look for a low-profile or under-cabinet model. Also measure the depth of your counter and the space behind the stove. Some hoods extend 20 inches or more from the wall, and they can't stick out so far that they block cabinets or windows.

Check the CFM rating for adequate air movement

CFM (cubic feet per minute) measures how much air the hood pulls out. A hood that is too weak leaves cooking odors and steam in your kitchen. A rule of thumb is 100 CFM per linear foot of cooktop. A 30-inch stove needs roughly 300 CFM. A 36-inch stove needs roughly 360 CFM. A 48-inch commercial-style stove needs roughly 480 CFM or higher.

If you cook frequently or use high heat often, add 50 to 100 CFM to that baseline. If you have a gas stove, add another 50 CFM because gas produces more moisture than electric. If your hood will be ducted a long distance (more than 10 feet) or through multiple turns, you may need 20 to 30 percent more CFM to overcome the resistance. Check the hood's spec sheet for the CFM rating—it is usually printed on the box or the manufacturer's website.

Understand ducting requirements for vented hoods

A ducted hood needs a path to the outside. The duct can run straight up through the roof, horizontally through an exterior wall, or down and out through the foundation. Straight up is simplest and most efficient. Horizontal through a wall works if your kitchen is on an exterior wall. Down and out is rare in homes but sometimes necessary in apartments or condos.

The duct should be as short and straight as possible. Every 90-degree turn reduces airflow by about 10 to 15 percent. A 10-foot duct with two turns loses roughly 20 to 30 percent of the hood's rated CFM. If your ductwork will be long or complex, buy a hood with higher CFM to compensate. Also check whether your roof or wall has room for a vent cap (the opening where air exits). Some homes have restrictions on exterior venting, so confirm with your local building code or homeowners association before you buy.

Evaluate noise level and fan speed options

Vent hoods produce noise from the motor and the air moving through the duct. Noise is measured in sones—a lower number is quieter. Most hoods range from 3 to 8 sones. A 3-sone hood is nearly silent. A 5-sone hood is noticeable but not loud. An 8-sone hood is loud enough to interrupt conversation. If your kitchen is open to a living area, choose a hood rated 4 sones or lower.

Look for a hood with multiple fan speeds. Low speed is quieter and uses less energy for light cooking. High speed is necessary when you are searing meat or boiling pasta. A three-speed or variable-speed hood gives you flexibility. Some newer models have motion sensors that turn the fan on automatically when they detect heat, which is convenient but not essential.

Decide between stainless steel, painted, and other finishes

Stainless steel is the most common finish because it hides fingerprints and matches most appliances. It costs more than painted steel but lasts longer without rust or chipping. Painted steel (usually white or black) is cheaper and works fine in kitchens where you don't mind occasional touch-ups. Copper and bronze finishes are available but cost significantly more and are harder to clean.

Consider how much grease your cooking produces. If you fry or sauté frequently, stainless steel is easier to wipe down. If you mostly bake or boil, painted steel is adequate. All hoods need the filter cleaned or replaced regularly—grease buildup reduces airflow and increases fire risk. Check whether replacement filters are straightforward to find and affordable for the model you choose. Some brands charge $30 to $80 per filter, while others cost $10 to $20.

Confirm electrical and installation requirements before buying

Most hoods plug into a standard outlet, but some require hardwiring to a dedicated circuit. Check your kitchen's electrical panel to see whether you have a spare 120-volt circuit available. If not, you may need an electrician to install one, which adds $300 to $800 to your total cost. Some high-end hoods need 240 volts, which is less common in kitchens and more expensive to install.

Installation itself varies by hood type. An under-cabinet hood is the simplest—it usually takes 1 to 2 hours and requires only basic tools. A ducted range hood above a wall stove is moderate difficulty if ductwork already exists; if you need to run new ductwork, budget $500 to $2,000 depending on distance and complexity. A downdraft hood requires modifications to the cooktop area and is best left to a professional. If you are not comfortable with basic carpentry and electrical work, hire an installer—a poor installation reduces airflow and can create safety hazards.

Frequently Asked Questions

Can I use a ductless hood if I have no way to run ductwork?

Yes. Ductless hoods filter air through charcoal or mesh filters and return it to the kitchen. They cost less to install and work in any location. The trade-off is that you must replace filters every 3 to 6 months, and they don't remove humidity or heat. If your kitchen gets steamy when you cook, a ductless hood will not solve that problem.

What size hood do I need for a 48-inch commercial-style stove?

A 48-inch hood is the standard match. The CFM rating should be at least 480, and 600 CFM is better if you cook frequently or use high heat. Commercial stoves produce more heat and moisture than standard home stoves, so don't undersize the hood.

Is it okay to vent a range hood into the attic instead of outside?

No. Venting into the attic introduces moisture and grease into the space, which causes mold, rot, and attracts pests. All ductwork must terminate outside the home. If running ductwork to an exterior wall or roof is not possible, a ductless hood is your only option.

How often do I need to clean the hood filter?

Mesh filters in ducted hoods should be cleaned or replaced every 1 to 3 months, depending on how much you cook. Charcoal filters in ductless hoods need replacement every 3 to 6 months. Check the filter monthly—if it looks dark or clogged, clean or replace it sooner. A dirty filter reduces airflow and increases fire risk.

Can I install a range hood myself, or do I need a professional?

Under-cabinet hoods are often a DIY job if you have basic tools and electrical knowledge. Ducted hoods above wall stoves are moderate difficulty if ductwork exists. Downdraft hoods and any installation requiring new ductwork or electrical circuits are best left to a professional. Improper installation reduces airflow and can create safety hazards.