What to Look for in a Range Hood
Buying kitchen ventilation gets a lot easier once you know that a range hood is really a short list of specs matched to your kitchen — not a contest for the biggest number. Before you buy a range hood, focus on what actually determines performance: how wide it is, how much air it moves, how it vents that air, the style that fits your layout, and how quiet it is. The single factor people misjudge most is how the hood handles its air.
Get those fundamentals right and the finish, the lighting, and the smart features become the easy part — preferences layered on top of a hood that already does its job. Get them wrong and no amount of styling makes up for a hood that's too narrow, too weak, or vented the wrong way — which is why it's worth understanding ducted vs. ductless venting before you shop.
So here's the core takeaway of this guide: choosing a range hood comes down to matching it to your kitchen, not buying the biggest CFM. Get five things right — width (at least as wide as the cooktop), airflow (CFM matched to your fuel and cooking), how it vents air (ducted outside is best; ductless recirculates when you can't vent), the hood type for your layout, and mounting height — and you'll have a hood that genuinely clears the air. Below we break down each factor, then walk through how to choose, how to pick for your specific kitchen, and what to confirm before you buy.
Size and Width
Width comes first: your hood should be at least as wide as the cooktop so it captures the full plume, and a little wider improves capture at the front. A 30-inch cooktop calls for a 30-inch hood as a baseline, which is why the 30-inch range hood is the most common size shoppers land on; step up to 36 inches if your space allows.
Airflow (CFM) and Power
CFM is how much air the hood moves. Match it to your cooking: roughly 100 CFM per linear foot of electric cooktop, or your total gas BTUs divided by 100. Light everyday cooking is well served by 300–600 CFM; frequent searing, frying, or wok cooking calls for 900 CFM and up. Anything above 400 CFM should also account for make-up air.
Ducted vs. Ductless (Hood Air Vents)
This is where the "hood air vents" question is decided. A ducted hood vents cooking air outside — the most effective option because it removes heat and moisture along with grease and odors. A ductless range hood recirculates air through a charcoal filter and returns it to the room, which is the answer when you can't run a duct, though it trims effective airflow. Vent outside whenever you can; recirculate only when you can't.
Hood Type
The right style follows your layout: under-cabinet for a range beneath cabinetry, wall-mount (chimney) for a range against a wall, island for a cooktop with no wall behind it, a built-in insert for a fully custom look, or a downdraft where there's no overhead space. The type changes the look and the install, not the core job.
Noise, Filters, and Features
Noise is measured in sones — check the rating at the speed you'll actually use, not just the lowest. For filters, stainless steel baffle filters capture grease better than mesh and are usually dishwasher-safe. Features like LED lighting, multiple speeds, and gesture or auto controls are conveniences worth weighing once the essentials are set.
How to Choose a Range Hood, Step by Step
Whether you call it choosing a kitchen hood or picking a range hood, the process is the same short sequence:
- Measure the cooktop and choose a hood at least that wide.
- Calculate CFM from your cooktop width and fuel type, sizing up for high-heat cooking.
- Decide how it vents — ducted outside if possible, ductless if not.
- Pick the type that matches your kitchen layout.
- Confirm mounting height and ceiling fit — generally 24–30 inches above the cooktop.
- Compare noise and features at the specs that matter to you.
How to Pick a Range Hood for Your Kitchen
The same factors point to different answers depending on your kitchen, so here's how to pick a range hood for a few common situations. A range against a wall with everyday cooking is well matched by a 30-inch wall-mount hood at 300–600 CFM, ducted outside. A gas range or a serious cook who sears and wok-fries should size CFM up toward 900–1,500 and prioritize strong static pressure. An island cooktop needs an island hood (or a downdraft) with extra airflow to fight cross-drafts. And an apartment, condo, or rental with no way to vent outside is the classic case for a ductless hood. Start from your layout and fuel, and the right hood narrows quickly.
Where to Buy a Range Hood (and What to Confirm First)
When you're ready to buy a hood, the smart move is to judge the source on specs and support rather than marketing. Confirm the published CFM and static pressure suit your cooking, that the build is durable stainless steel with baffle filters, and that the noise rating is reasonable at usable speeds. Just as important are the things you'll appreciate later: a solid warranty, responsive support, and easy access to replacement filters and parts. Buy from a brand that states its specs clearly and stands behind them, and you avoid the most common regret — a hood that looked good but was mismatched to the kitchen.
Before you commit, running through the key questions to ask before buying confirms the width, airflow, and venting are right for your kitchen.
Frequently Asked Questions
How do I choose a range hood?
Work in order: measure the cooktop and match the hood width, calculate the CFM you need from your cooktop size and fuel, decide whether to vent outside (ducted) or recirculate (ductless), pick the type that fits your layout, and confirm the mounting height. Compare noise and features last.
What should I look for in a range hood?
Five essentials: width at least as wide as the cooktop, CFM matched to your cooking, ducted or ductless venting suited to your kitchen, a hood type that fits your layout, and a reasonable noise rating. Stainless baffle filters and good lighting are strong bonuses.
What are hood air vents, and how does a range hood vent air?
A hood vents its air one of two ways. A ducted hood pushes cooking air outside through ductwork, removing heat and moisture along with grease and odors. A ductless hood filters the air through charcoal and recirculates it back into the room. Ducted performs better; ductless is for kitchens that can't vent outside.
How much CFM do I need for a range hood?
Roughly 100 CFM per linear foot of electric cooktop, or your total gas BTUs divided by 100. Everyday cooking is fine around 300–600 CFM; frequent high-heat or wok cooking calls for 900 CFM and up. Match the number to how you actually cook.
Should I buy a ducted or ductless range hood?
Buy ducted whenever you can vent outside — it removes heat, moisture, grease, and odors most effectively. Choose ductless when running a duct isn't possible, such as in an interior kitchen, condo, or rental, and size the airflow up to offset the filter resistance.
Where is the best place to buy a range hood?
From a brand that publishes clear specs (CFM, static pressure, sones), backs the hood with a solid warranty, and makes replacement filters and parts easy to get. Prioritize verifiable performance and support over marketing claims, and confirm the size and venting fit your kitchen before ordering.
