Range Hood Buying Guide: What Nobody Tells You Before You Buy

Most range hoods people buy don’t actually work.

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Not because they’re broken. Because they were chosen wrong — wrong type, wrong CFM, wrong venting setup. The kitchen still smells like last night’s salmon. The filter turns brown in three weeks. The fan runs on high just to keep up, and it sounds like a helicopter.

I’ve seen the return data on these products. The same mistakes show up, over and over. And almost none of them had anything to do with the hood being defective.

This range hood buying guide is about not making those mistakes.

The One Thing You Need to Decide First in Any Range Hood Buying Guide: Ducted or Ductless

Before types, before CFM, before brand — answer this question first. Everything else follows from it.

Ducted means the hood pulls air through a duct and sends it outside. Grease, smoke, steam, odors — actually gone. Out of the house.

Ductless means the air passes through a charcoal filter and comes right back into your kitchen. Slightly cleaner than nothing. But here’s the reality: a ductless range hood doesn’t ventilate. It filters. Steam and heat return to the room. Odors get reduced, not eliminated. The filters need replacing every 3–6 months or they stop doing even that much.

If you can vent outside — do it. Always. The difference in performance isn’t marginal. It’s substantial.

The only honest reason to go ductless is if venting outside genuinely isn’t possible — apartment rules, no exterior wall access, rental situation where you can’t touch the walls. In that case, ductless beats nothing. But be realistic about what you’re getting.

I’ll cover both options throughout. Just keep this in mind as you read.

The 4 Types of Range Hoods

1. Under-Cabinet

The one you’ve probably seen your whole life. Mounts under the upper cabinets, sits directly above the cooktop, does its job without asking for attention.

This is the right choice if your range sits under upper cabinets. That’s most American kitchens. It handles gas and electric equally well, and installation is straightforward enough that a reasonably handy person can do it in a few hours.

Price range: $80–$600. The sweet spot — where you get real performance without overpaying — is $150–$350. For most homes, this type of range hood is the default starting point.

2. Wall-Mount

No upper cabinets above your range. The hood mounts directly to the wall, chimney-style, and it’s fully visible. This is the type that tends to make a kitchen look like someone actually thought about the design.

More expensive than under-cabinet, and installation is more involved. You’re anchoring into wall studs, routing ductwork, and likely dealing with a more complicated electrical setup. If you’re not handy, budget for a professional.

One thing I’ve noticed: wall-mount hoods get returned less often. People who buy them have usually done their research. The purchase decision is bigger, so they think it through more carefully. Lesson there.

Price range: $200–$1,500+.

3. Island (Ceiling-Mount)

Same function as wall-mount, different mounting point. The range is in a kitchen island, away from any wall, so the hood hangs from the ceiling.

The performance requirement is higher here. An island hood is exposed on all four sides — smoke and grease can escape in every direction. You need more CFM than you think. Don’t undersize this one.

Installation is the most complex of the four types. Ceiling mounting, routing ductwork upward and across, often ceiling height requirements of 9–10 feet for proper proportions. You’ll need a contractor. Budget accordingly.

Price range: $400–$3,000+.

4. Insert / Liner

This one most people have never heard of. An insert is just the motor and blower — no housing, no chimney, nothing visible. It gets built into a custom enclosure that a carpenter or cabinet maker creates around it. You see the custom surround; the appliance is hidden inside.

High design flexibility. Can be very powerful. Not a straightforward purchase — you’re buying a component, not a finished product.

Most people reading this don’t need an insert. But if you’re doing a full custom kitchen renovation and working with a designer, it’s worth knowing the option exists.

Price range: Variable. Depends heavily on the surrounding build.

CFM: The Number That Actually Matters

CFM is cubic feet per minute — the volume of air the hood moves. This is the most important spec on the sheet. Most people look at everything except this one.

How to figure out what you need:

For gas ranges: divide your total BTU output by 100. A 40,000 BTU range needs a minimum of 400 CFM.

For electric: multiply cooktop width by 10. A 30-inch cooktop needs at least 300 CFM.

Those are floors, not targets. If you cook at high heat often — heavy oil, stir-fry, searing — add 20–30%.

Here’s what the spec sheet won’t tell you: CFM ratings come from lab tests in ideal conditions. In your actual kitchen, with real ductwork, bends, and a damper, you lose efficiency. A 400 CFM hood running through 15 feet of duct with two 90-degree bends might deliver 260 CFM at the cooktop. If your duct run is long or complicated, size up before you buy — not after.

For ductless: CFM still matters. Higher airflow means more passes through the filter per minute. Don’t go below 200 CFM and expect it to handle any serious cooking.

Noise: What Sones Actually Mean

Sones are how range hood noise gets measured. Not decibels — sones. Here’s what the numbers mean in practice:

1 sone — you barely notice it. Background hum, like a refrigerator.

2–3 sones — noticeable but not intrusive. Normal conversation, no problem.

4–6 sones — you raise your voice on a phone call.

7+ — genuinely disruptive. Dinner conversation suffers.

Most hoods list sone ratings at low or medium speed — not max. At max speed, the number can be double what’s advertised at low. Check what the rating is at max. If it’s not listed, that’s intentional, and not in your favor.

If you have an open kitchen or you host often, target 3 sones or under at max. For a closed kitchen where noise bothers you less, 4–5 is workable.

Sizing: Three Rules

Width: Match or exceed your cooktop. A 30-inch range works with a 30-inch hood, but a 36-inch hood gives you more capture margin. The airflow doesn’t stop exactly at the hood’s edge — wider is more forgiving.

Height: Under-cabinet and wall-mount hoods typically mount 24–30 inches above the cooking surface. Island hoods, 28–36 inches. Too low creates heat problems at the hood. Too high reduces capture efficiency — the steam and smoke cool and spread before they reach the intake.

Duct diameter: Check this before you buy anything. Most hoods use 6-inch or 7-inch round ductwork. If your existing duct is 4 inches, you have a mismatch. Measure first. Don’t assume.

What You Actually Get at Each Price Point

Under $150: Basic under-cabinet hoods. Brands like Broan have been making functional, no-frills units at this price for decades. Fine for light cooking — occasional meals, low heat. Not the right choice if you cook every day or ever turn a burner past medium.

$150–$350: The best value range, full stop. You get real stainless steel (not just the look of it), 350–600 CFM options, and acceptable noise levels. Brands like Hauslane have done well here — they’re newer, but the product quality in this range is solid. This is where I’d point most people who cook regularly.

$350–$700: Better build, stronger motor, quieter at speed, hardware that feels like it belongs in a kitchen instead of just existing in one. ZLINE‘s core wall-mount lineup sits here. If you’re putting money into a kitchen renovation and want the hood to look like part of a considered design, this range makes sense.

$700–$1,500+: Semi-commercial territory. Designed for people who cook seriously — high-BTU gas ranges, frequent high-heat cooking, kitchens where performance isn’t optional. ZLINE‘s higher end, Fotile, and some premium imports live here. The motors last longer. The noise engineering is genuinely different.

Above $1,500: Brands like Zephyr and Broan‘s professional line. Real investments. Justified for high-end renovations. Overkill for most households. If you’re considering this range, you probably already know why.

The 3 Mistakes I See Most Often

Buying ductless because the install is easier.
I understand the logic. No ductwork, no contractor, plug it in and done. But you’re trading the entire point of owning a range hood for installation convenience. If venting outside is physically possible, do it. Even if it takes a contractor half a day and costs $200. You’ll spend that money back in charcoal filters within two years of ductless ownership anyway.

Undersizing CFM to save $40.
A hood that can’t keep up with your cooktop runs on max speed constantly. Louder, less efficient, shorter lifespan. Buy the right CFM and you’ll run it on medium most of the time — quieter, less wear, longer useful life. The math works in favor of sizing correctly.

Ignoring the duct route before buying.
I’ve seen this happen more than I can count. Someone buys a 600 CFM hood, runs it through 15 feet of duct with three 90-degree turns, and then wonders why it feels underpowered. The hood didn’t fail — the installation did. Plan the duct path before you pick a CFM rating, not after.

How to Actually Decide

Four questions. Use this range hood buying guide framework and you’ll have your answer.

Can I vent outside? Yes = ducted, no exceptions. No = ductless, with realistic expectations.

What’s my cooktop output? Calculate your CFM minimum using the formulas above. Add a buffer.

What’s my kitchen layout? Upper cabinets above the range = under-cabinet. Range on a wall, no upper cabinets = wall-mount. Island cooktop = ceiling-mount. Custom build = insert.

What’s my real budget? Look at the price bands above and find the best option in your range.

The right range hood isn’t the most expensive one on the page. It’s the one that matches your kitchen, your cooktop, and the way you actually cook. That’s the whole point of this range hood buying guide — cut through the noise and make the call.

Everything else is just a picture on a listing.

Cheers,
Kazaan