The Best Low Profile Under Cabinet Range Hood States Which Speed

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Two hoods on this page publish 45 dB. One means at its highest fan speed. The other means at its lowest.

They are describing completely different products with the same number, and if you compared the two figures without reading the qualifier you would conclude they were equally quiet. Every hood is quiet on low — that is what a low setting is for. The figure that decides whether you can hold a conversation while frying is the one at full power, and it is the one most makers avoid publishing.

It gets worse, because the category cannot agree on a unit. Three hoods here quote decibels, two quote sones, and five publish nothing at all. Sones and decibels are not interchangeable: sones are linear, so 6.5 sones really is about four times as loud as 1.5, while decibels are logarithmic and A-weighted and nearly meaningless without a distance and a speed.

Only one listing here gives you all three — a unit, a number, and the speed it applies to.

The other thing worth measuring is the hood itself. “Low profile” runs from 3.9 inches to 5.5 on this page, and that inch and a half is often what decides whether it fits over your hob at all.

Our Quick Picks

At a Glance

Ten Hoods, and What Their Noise Figures Actually Say

Body height, claimed airflow, the noise figure exactly as published, and how it vents. Read the noise column with its qualifier, not as a number.

#	Model	Height	Max CFM	Noise	Venting	Standout	Main Drawback	Check Price
1	Broan-NuTone 350 CFM 1.5 Sones	6 in	350 max blower	1.5 sones, working speed	Top or rear	It states the unit, the number and the speed it applies to	$224.00, the most expensive hood here	View on Amazon
2	Tyemui 80W Brushless Slim	Slim	3 speed	<45 dB at high	Ducted or ductless	Under 45 dB at the highest speed, which is the figure that matters	No CFM figure is published anywhere	View on Amazon
3	FIREGAS 3.94 Inch 250 CFM	3.94 in	250 CFM	Not stated	Ducted or ductless	Three point nine four inches, which is what ‘low profile’ should mean	No noise figure is published at all	View on Amazon
4	AMZCHEF 750 CFM Triple Filter	Not stated	750 CFM	≤60 dB	Not stated	Three filter layers — mesh, baffle and charcoal together	750 CFM in an under-cabinet body is a bench figure	View on Amazon
5	CIARRA Ultra Slim Ductless	Ultra slim	Not stated	6.5 sones max	Ducted or ductless	It publishes sones, so it can be compared directly with the Broan	6.5 sones against 1.5 is a very large difference	View on Amazon
6	IsEasy 3.9 Inch 250 CFM	3.9 in	250 CFM	Not stated	Ducted or ductless	Publishes all three dimensions, which half this page does not	250 CFM and no noise figure	View on Amazon
7	Alemania 300 CFM with Duct Kit	Low profile	300 CFM	Quiet claim	Duct and filter included	A 6.56 ft duct and a charcoal filter in the box	No noise figure and no dimensions	View on Amazon
8	Slim 250 CFM 5-Layer Filter	5.5 in	250 CFM	70 dB max	4.72 in	Five filter layers and a published duct size	70 dB is the loudest figure on this page	View on Amazon
9	430 Stainless 300 CFM Toggle	Slim	300 CFM	Not stated	Ducted or ductless	Names the steel grade — 430 stainless — which nobody else does	Only two speeds, on a toggle switch	View on Amazon
10	RCA Century Ductless 45 dB	4.0 in	Not stated	45 dB at lowest	3.75 in	A 2-year parts warranty and US-based support	Its 45 dB figure is quoted at the lowest fan speed	View on Amazon

Heights, airflow figures, noise levels, prices and specifications are taken from each manufacturer’s Amazon listing as displayed on 27 August 2026 through a United States connection, and may change. Noise is published in three incompatible ways across this page — three listings give decibels, two give sones, and five give no figure at all — and the figures are reproduced here exactly as stated, including the fan speed each applies to where one is named. Sones and decibels cannot be converted between casually: sones are a linear perceptual scale used by the ventilation industry, decibels are logarithmic. One listing quotes its decibel figure at the lowest fan speed and another quotes a similar figure at the highest; both are reported with their qualifiers rather than compared directly. CFM ratings are free-air bench figures and will be lower once ducting is attached. Where a listing publishes no height, no airflow or no noise level, the table says so rather than estimating. Sales ranks are shown as displayed and can be pooled across a variant family.

Scroll the table sideways to see every column

How We Chose These Ten

We researched current listings, compared manufacturer specifications and documentation, and examined recurring patterns in customer feedback. We did not carry out hands-on testing, and nothing below is presented as measured performance data.

• Noise figures reproduced with their unit and fan speed — two hoods here publish 45 dB and mean opposite things
• Body height recorded, because that is what ‘low profile’ should mean — the range here is 3.9 to 5.5 inches
• Airflow treated as a bench figure — free-air CFM falls once ducting is attached
• A verified live buy box — all ten confirmed purchasable in the United States on 27 August 2026
• Duct size noted where published — two listings publish one and it constrains everything
• Installation requirements checked — plug-in or hardwired changes who can fit it
• No overlap with our published range hood guides — every hood here is new to the site

The Ten in Detail

Every Noise Figure on This Page, With Its Qualifier

Reproduced exactly as published. Notice how few of them are comparable with each other.

Only two products on this page can be compared with each other on noise, and they happen to be the two using sones. 1.5 against 6.5 is roughly a fourfold difference in perceived loudness — a genuine, meaningful comparison, and the only one available here. The decibel figures cannot be set against the sone figures, and the 45 dB at lowest speed cannot honestly be set against the under-45 dB at highest speed. Five hoods publish nothing, which is not evidence of quietness.

What Low Profile Actually Measures

The phrase is unregulated. Here is what each hood means by it.

Six of these ten describe themselves as slim, ultra slim or low profile and publish no height at all. Four give a figure, and among those the range is 3.9 to 5.5 inches — a difference of more than an inch and a half, which is exactly the margin that decides whether a hood clears your cooktop by the distance its manufacturer requires. Depth matters too and only three publish it: a hood 20 inches deep under a standard 12-inch wall cabinet projects eight inches beyond it.

Best Alternatives

What the Money Actually Buys

$69.99 to $79.99 — 430 Stainless, IsEasy, Tyemui, Alemania. The best part of this page. It contains the quietest published figure here, the joint-slimmest body, the only listing naming its steel grade, and the only kit that includes both duct and charcoal filter. Three of the four are plug-in.

$89.09 to $125.98 — Slim 5-Layer, FIREGAS, CIARRA. More filtration and more published detail, including two full dimension sets and the only sone figure besides the Broan. Also the loudest hood here, at 70 dB.

$179.99 — AMZCHEF. Three filter layers including charcoal, dimmable lighting and the highest rank on the page. Bought for ductless kitchens where the filter stack is the whole product.

$224.00 — Broan-NuTone. Energy Star, Title 24, one-person brackets, a make-up air damper option, and the only noise figure here stated with a unit and a speed. You are paying for the specification being trustworthy.

What to Check Before You Buy

Read the Fan Speed Attached to the Noise Figure

This is the single most important line in any range hood listing and it is routinely missing. Two hoods in this roundup publish 45 dB: one at its highest fan speed, one at its lowest. Those describe entirely different appliances. Every hood is quiet on its lowest setting, so a figure quoted there tells you almost nothing — the question is what it sounds like when you actually need it, at full power over a hot pan. If a listing gives a number without naming a speed, treat it as the best case. If it gives no number at all, which five hoods here do not, assume nothing.

Understand Sones Versus Decibels

The ventilation industry uses sones, and there is a good reason. Sones are a linear perceptual scale: 3 sones sounds three times as loud as 1 sone, so the numbers behave the way you expect and can be compared directly. Decibels are logarithmic and A-weighted, so a given difference means different things at different levels, and a dB figure without a measuring distance is close to unusable. In this roundup, two hoods publish sones — 1.5 and 6.5 — and those two are the only products here you can honestly rank against each other on noise. You cannot convert between the units casually, so treat dB and sone listings as separate populations.

Measure the Gap Above Your Hob, Then the Hood

“Low profile” is an unregulated phrase and six of these ten use it without publishing a height. Among the four that do, the range is 3.9 to 5.5 inches. That matters because cooktop manufacturers and building codes generally want 24 to 30 inches of clearance between the hob surface and the hood, and the hood’s body eats into whatever gap exists between your cooktop and the cabinet above. Measure that gap, subtract the hood height, and check the result against your own cooktop’s installation instructions. Then check depth: three hoods here publish it, and at 20 inches a hood projects eight inches beyond a standard 12-inch wall cabinet.

Treat CFM as a Bench Figure and Look for the Duct Size

Airflow ratings in this category are measured free-air, with nothing attached to the outlet, and they fall once you connect ducting — further with every elbow and every foot of flexible pipe. Two listings here publish a duct diameter, at 4.72 and 3.75 inches, and both are narrow. A smaller duct means higher air velocity for the same airflow, which means more resistance, less delivered air and considerably more noise. Where a hood claims a large CFM figure and publishes no duct size, you have no way to sanity-check the claim. The most conservative listing here labels its number “max blower CFM”, which is the honest form.

Decide Ducted or Ductless Before You Compare Filters

If you can vent outside, do. A ducted hood removes heat, steam, grease and odour from the house entirely. A ductless one filters the air and returns it to the same room, so the heat and moisture stay exactly where they were and the charcoal becomes a running cost. If ductless is your only option, the filter stack is the whole product: look for charcoal in addition to mesh, and ideally a baffle layer between them. One hood here supplies all three together, and one includes both a duct and a charcoal filter in the box so the decision can be made after unpacking rather than before ordering.

Check Whether It Plugs In

This changes who can install it and what it really costs. Four hoods in this roundup arrive with a three-prong plug and are a bracket, some screws and a socket. Others are hardwired, which is electrical work — in many places a qualified electrician and possibly an inspection, at a cost that can approach the price of the hood itself and never appears in the product listing. One hood here supplies EZ1 brackets specifically so a single person can fit it without a second pair of hands. Read the power line in the specification before comparing prices, because the cheapest hood is not always the cheapest installation.

Look for Filters You Can Put in the Dishwasher

A grease filter that is awkward to clean is a grease filter that does not get cleaned, and a loaded filter quietly strangles airflow while the hood sounds exactly the same. Several hoods here specify dishwasher-safe filters, in aluminium mesh or stainless, and one offers a five-layer stack that traps more grease at the cost of more resistance. Reusable is the other thing to check: a mesh filter you wash lasts the life of the hood, while charcoal for ductless operation is a consumable that needs replacing periodically. One listing names its carbon filter part number, which makes reordering years later considerably easier.

Common Mistakes

• Comparing two 45 dB figures. One here is at the highest speed and one at the lowest.
• Treating sones and decibels as interchangeable. Only two hoods here are comparable at all.
• Trusting ‘ultra slim’ without a number. Six of these publish no height.
• Ignoring depth. Twenty inches projects eight beyond a standard wall cabinet.
• Reading CFM as delivered airflow. It is measured with nothing attached.
• Assuming it plugs in. Hardwiring turns a screwdriver job into an electrician’s.
• Letting the filter load up. Airflow falls and the noise never changes.

Who Should Buy Which

Buy the Broan-NuTone at $224.00 if you want a figure you can trust. 1.5 sones at working speed, 350 max blower CFM, Energy Star and Title 24, and brackets one person can fit.

Buy the Tyemui at $78.88 for the quietest published number. An 80W brushless motor under 45 dB at high speed, dishwasher-safe filters and a plug already fitted.

Buy the FIREGAS at $99.99 if the gap is tight. 3.94 inches, 250 CFM matched honestly to the body, three speeds and a one-year warranty.

Buy the AMZCHEF at $179.99 if you cannot vent outside. Mesh, baffle and charcoal layers together, plus dimmable lighting and rank #84.

Buy the IsEasy at $75.99 if you need to check it fits. Depth, width and height all published, at 3.9 inches tall.

Frequently Asked Questions

Final Verdict

Two hoods on this page publish 45 dB and mean opposite things by it. One at full power, one at its quietest setting — and without the qualifier they look identical.

Five publish no noise figure at all, and three more use a unit that cannot be compared with the other two. Only one listing here gives a unit, a number and a speed together.

Then measure. “Low profile” means anything from 3.9 to 5.5 inches on this page, and six hoods do not say which.

A quiet hood you run at full power beats a powerful one you keep on setting one. That is the whole of it.