A wall hood has a wall behind it and often cabinets beside it. An island hood has neither. It hangs from the ceiling in the middle of the room, the smoke rises from a cooktop that is open on all sides, and the people you are cooking for sit a few feet away. That makes the island the hardest place in the house to put a quiet hood, and the place where the noise travels furthest.
This guide is for that one layout. We took every island hood in the Home Ventilating Institute (HVI) directory that we could match to an island model on its maker's own site, ranked them on certified sones at high speed, and then read off the figure at the step a 36-inch island actually needs. For the room as a whole, including the fridge and dishwasher, see our page on planning a quiet open-plan kitchen.
Our picks are listed above, with full specifications for each.
How we ranked them
Picks are in order of their HVI-certified rating at high speed, measured at 0.1 inch of static pressure. That is the one speed every island hood here has certified in the same way, so it is the fair comparison. The "At 450 CFM" line on each pick shows the figure you can rely on at the airflow a 36-inch island needs, and says whether it is certified.
Sones are linear: 10 sones sounds twice as loud as 5, and 12 sounds a fifth louder than 10. That makes the gaps between these picks small. The Titan at 10 sones and the Broan at 12 are much closer to each other than either is to a wall hood certified at 4. Decibels are logarithmic and work differently, and there is no reliable conversion between the two, so we never convert. Our explainer on sones vs decibels goes into why.
How much airflow an island needs
Best gives the clearest rules, in its buying guide on range hood performance:
- Wall hood over a standard cooktop: 100 CFM for every foot of width, so about 300 CFM for a 36-inch cooktop.
- Island cooktop: "typically use 150 CFM per foot of cooktop width". That is about 450 CFM for 36 inches and 600 CFM for 48 inches.
- High-performance islands: another 100 CFM on top of the standard figure.
Best's reason is simple: "there are no surrounding cabinets or walls to help contain rising smoke and cooking vapors." So the same cooktop needs half as much airflow again once it moves to an island, and that pushes the hood to a higher step.
Here is every island hood we could match to an island page on the maker's site, with its HVI figures at the lowest and highest certified speeds. All are 36-inch models unless noted.
- Zephyr Titan Island (AK7736CS): 2 sones at 180 CFM; 10 sones at 560 CFM.
- Zephyr Luce Island (ZLC-M90CS): 2.5 sones at 210 CFM; 11 sones at 520 CFM.
- Zephyr Napoli Island (ZNA-M90DS): 0.8 sone at 140 CFM; 11 sones at 690 CFM.
- Zephyr Modena and Verona Island (ZMD-M90BS, ZVN-M90BG): 1.4 sones at 190 CFM; 11.5 sones at 570 CFM.
- Best ICB3 (ICB3I36SBS): 1.5 sones at 210 CFM; 11.5 sones at 580 CFM.
- Broan Elite EIT1 (EIT1366SS): under 0.3 sone at 110 CFM; 12.0 sones at 580 CFM.
- Zephyr Anzio and Roma Island (ZAZ-M90DS, ZRM-E36FS): 2 sones at 210 CFM; 12 sones at 560 CFM.
Two things stand out. First, the spread on high is narrow: 10 to 12 sones. Best's own scale puts 4 sones next to normal conversation and 6 to 7 next to a typical conventional range hood, so every one of these is well past both on high. Second, the quiet low speeds are all well under 450 CFM. None of them covers a 36-inch island by Best's rule on its own.
HVI also files a 42-inch Electrolux hood (ECVI4262AS) under island hoods, certified at 8.5 sones at 410 CFM on high. Electrolux is outside the makers we covered and we did not verify it on Electrolux's site, but note that 410 CFM is below Best's 450 CFM figure for a 36-inch island, let alone a 42-inch one.
The missing middle
The step you will cook on most nights is the one that clears your airflow target, and that is where the published figures run out. The Titan has five speeds and two certified points. The Napoli has six speeds and two. The ICB3 has four and two. For all three, the only figure at or above 450 CFM is high. Zephyr's own Titan sheet does not fill the gap either: its "1-8 Sones" for the included blower is a range with no speed attached. Our Zephyr sones page sets printed ranges like that beside HVI's figures for every Zephyr island hood HVI certifies.
Broan is the exception. Its EIT1 spec sheet lists all four speeds: under 0.3 sone at 110 CFM, 4.0 at 290, 9.5 at 490 and 12.0 at 580. The middle two are marked as not HVI certified, but Broan says they were established using HVI's test procedure. That gives you 9.5 sones at 490 CFM for a 36-inch island, which is the only published figure near 450 CFM in this guide. It does not make the Broan the quietest hood here, but it is the only one where you can see what the step you need sounds like.
Capture area: wider, lower and deeper
Airflow is only half of what an island hood does. The other half is catching the smoke before it drifts into the room, and Best's guidance on that is useful in an open space:
- The hood should be at least as wide as the cooktop, covering all of the back burners and at least half of the front ones. Best lists island installations and open-concept layouts among the places where a wider hood helps, and notes that some local codes require the hood to extend 6 inches beyond the cooking surface.
- Mount it at the lowest height the maker allows. If it has to hang higher, Best suggests adding about 100 CFM for every 3 inches above the recommended height.
- Look for a sump, the recessed area under the hood that holds rising smoke, at least 1 inch deep.
This is where quiet and capture pull together. A hood that captures well can do the job on a lower step, and a lower step is quieter. The Titan comes in 36, 42, 48 and 54 inches with the same HVI ratings, so a wider Titan over a 36-inch cooktop gives you more capture without a different certified noise figure. HVI lists all four sizes at 10 sones at 560 CFM on high.
Ducting through the ceiling
An island hood almost always vents straight up, through the ceiling and out through the roof or a wall. That run is often longer than a wall hood's, and every extra foot and elbow makes the blower work harder. Best's advice, written for the lowest possible sound levels:
- Never reduce the duct below the size the hood specifies; larger is generally better.
- Keep the total run under 50 linear feet where possible.
- Use four or fewer elbows and transitions, with at least two feet of straight duct between 90-degree elbows.
Broan's EIT1 installation guide says the same in fewer words: "A straight, short duct run will allow the hood to perform most efficiently", and longer runs may need larger ducting. Broan also says not to exhaust into spaces within walls or ceilings, or into attics.
Ceiling height matters too. Broan's EIT1 has a telescopic flue for 8 to 9 foot ceilings and an extension for 10 feet, and its maximum mounting height drops to 34 inches on an 8-foot ceiling. Zephyr's Titan table runs from 8 to 12 foot ceilings, with an extension cover for ceilings from 9.5 feet up. Check the table before you buy, because a hood that ends up too high captures less.
Remote and inline blowers
The classic way to quiet an island hood is to take the motor out of the room. An in-line blower sits in the duct, often in the attic or ceiling space. An exterior blower mounts on the roof or an outside wall. Best's spec sheet for its EB6 and EB9 exterior blowers says that, "to achieve reduced sound levels at the range hood", the blower should be at least 10 feet from the hood, with one 90-degree elbow between them.
What nobody publishes is how quiet that is. HVI's listings for remote exterior blowers from Best, Broan, Bosch and Thermador give airflow only, with no sone figure. Zephyr's Trapeze Island, which takes either an in-line or an external 1,000 CFM blower, lists both as "sones NA". Zephyr also notes that the Trapeze's 10-inch remote-blower duct must transition to 8 inches before it passes through the ceiling, which is the sort of detail an installer needs early.
So a remote blower is worth discussing with your installer for a big island, but there is no figure on any spec sheet we read that lets you compare it with the hoods ranked here. If you are building a custom hood shell instead, our guide to the quietest range hood inserts compares the inserts and power packs that go inside one.
A bigger blower on a lower step
Best argues in its buying guide that a higher-capacity hood "can often run at lower fan speeds during everyday cooking, making it quieter than a smaller hood operating at maximum speed". For islands, the published figures make that hard to check. The 48-inch Best island hood in the HVI directory (IPB9IQT48SB, which we could not find on Best's US site) is certified at 0.4 sone at 290 CFM and 11.5 sones at 1,100 CFM, with nothing in between. That is a lot of airflow for 11.5 sones, but you cannot see the step a 48-inch island needs, about 600 CFM by Best's rule.
What else you hear in the middle of the room
Fans that start on their own. Zephyr's Clean Air (Titan) and CleanAir (Napoli), when you enable them, run the fan on speed 1 for 10 minutes every 4 hours. Best's Heat Sentry on the ICB3 switches the blower to high when it detects excessive heat. FOTILE's EA06C has an auto turbo mode and smart smoke detection.
Delay off. The Titan drops to speed 1 for 5 minutes; the Napoli to speed 1 for 10 minutes by default; the ICB3 runs on for 5 minutes and the Broan EIT1 for 15. A long delay clears the air but keeps a hood running over the table after you sit down.
Memory. Both Zephyr manuals say the hood remembers its last fan setting. If you switched it off on high, that is where it comes back.
Lights. The Napoli's proximity controls light up and greet you with "HELLO" when someone approaches the hood while it is off. Over an island that people walk past all evening, that may be a feature or a nuisance.
Decibel-rated island hoods stay in their own group
FOTILE's EA06C island hood lists "Noise Level(dB) 41 / 50 / 55" for its settings and is not in the HVI directory. Decibels and sones are different scales, so we cannot place it in the ranking above, and we do not rank it against anything. For Bosch, GE, Thermador, Faber, Vent-A-Hood, ZLINE and Cosmo, we found no island hood in the HVI directory with a sone rating that we could match to an island model on the maker's site.
What quiet costs
Island hoods are expensive before you get to quiet. The Broan EIT1 is $1,554 on Broan's site and FOTILE's EA06C is $4,999 on FOTILE's; Zephyr and Best show no prices. Quiet also costs in other ways: a wider hood for capture, a bigger duct, ACT or Code Ready Technology to cap the blower where make-up air rules apply, which also caps the loudest step. And the island itself costs you quiet. A 36-inch cooktop on a wall needs about 300 CFM by Best's rule, and the quietest wall hoods we have checked are certified at 2 sones at that kind of airflow. Our guide to range hoods for an open-plan kitchen covers that layout, and our quietest range hoods guide ranks hoods of every type at full power.
How we chose
We downloaded the HVI certified products directory (data generated September 23, 2026), pulled every range hood filed under island hoods or with no subcategory, and matched each model to an island page on its maker's site. We kept hoods from the makers we cover whose island model we could find, reopened each spec sheet and manual, and used Best's sizing rules for the airflow targets. The Best ICB3 and FOTILE EA06C come from our open-plan guide; we added the Zephyr Titan, Napoli and Trapeze and the Broan EIT1. Prices are the makers' own, checked on October 3, 2026; where a maker shows none, we say so.
We did not measure any of these hoods ourselves. Every sone and CFM figure is HVI's certified rating or the maker's published one, quoted with the speed it describes, and we say each time which is which.
