Buying guide
The 5 best humidifiers (updated August 2026)
Updated Aug 27, 2026 ยท prices dated per offer
Bedroom humidifiers split on two questions. First, ultrasonic or evaporative. Ultrasonic units vibrate water into a fine cool mist and run close to silent, but with hard tap water they can leave white mineral dust on nearby surfaces. Evaporative units pull air through a wet wick, so the minerals stay in the filter, at the cost of fan noise and a filter to replace. Second, how much you want to think about it: a humidistat holds a target humidity, while cheaper units simply run at the speed you set.
All five here are cool mist and quiet enough for a bedroom, four ultrasonic and one evaporative. Whichever you pick, plan on cleaning it regularly, because a tank of standing water is a tank of standing water. Every price below was checked on the date shown next to the offer.
| Spec | Levoit Classic 300S | Dreo HM524S Smart Humidifier | Honeywell HEV620 Top Fill Tower Humidifier | Vicks Filter Free Plus Cool Mist Ultrasonic Humidifier | Pure Enrichment MistAire Ultrasonic Cool Mist Humidifier |
|---|---|---|---|---|---|
| Best price | $79.99 at Levoit | $62.99 at Dreo | $92.99 at Target | $49.99 at Target | $39.99 at Target |
| Checked | ✓ AUG 30 | ✓ AUG 30 | ✓ AUG 27 | ✓ AUG 27 | ✓ AUG 27 |
| Tank Capacity | 6 L (1.58 gal) | 6 L | 1.7 gallons | 1.2 gallons (about 153 oz) | 1.7 liters |
| Room Coverage | 215-505 sq ft | Up to 550 sq ft | Large rooms, per Honeywell's product line description | Manufacturer-rated for roughly 100-300 sq ft rooms | Manufacturer-rated up to about 250 sq ft |
| Runtime | Up to 60 hours on low | Up to 60 hours | Up to 24 hours per fill on low setting | Up to 24 hours per fill (Vicks also lists up to 40 hours on its lowest mist setting) | Up to 25 hours on low, up to 12 hours on high per fill |
| Extras | - | Essential oil tray, 3-angle tiltable nozzle | Automatic shut-off when empty, filter and refill indicator lights | Slot for 2 optional Vicks SoothingVapoPads (sold separately), automatic shut-off | Auto shut-off when the tank is low or removed, includes AC adapter and cleaning brush |
| Filter type | - | - | Wick filter (HFT600), one included; the unit must run with a filter installed | Filter-free ultrasonic design, no filters to replace | Filter-free ultrasonic design, no filters to replace |
| Controls | - | - | Programmable digital humidistat and timer, 3 moisture output settings | 5 mist settings via touch controls, 180-degree adjustable mist nozzle, auto-dimming lights | 2 mist speed settings, 360-degree adjustable mist nozzle, single-setting night light |
| Noise Level | Below 30 dB | 28 dB on low | - | - | - |
| Warranty | - | - | 3-year limited warranty, ETL Listed | - | 5-year manufacturer warranty |
| Mist Levels | 4 settings: Low, Medium, High, Auto | - | - | - | - |
| App Control | VeSync app, humidity targeting 40-50% or custom level | - | - | - | - |
| Features | Top-fill design, aromatherapy pad, night light | - | - | - | - |
| Humidity Accuracy | - | Within about 5% via auto mode | - | - | - |
| Smart Features | - | Dreo app, Google Home, Alexa, RGB night light | - | - | - |
| Fill design | - | - | Removable top-fill tank rather than a bottom basin | - | - |
| Power | - | - | - | 120V, wide tank opening for filling and cleaning | - |
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Best overall
1. Levoit Classic 300S
Six liters of tank, up to 60 hours on low, under 30 dB, and a top-fill opening you pour into rather than a full basin you carry from the sink. Auto mode holds 40 to 50 percent humidity or a level you set yourself, through Levoit's VeSync app, so it does not need daily babysitting.
Owners report the humidity readout drifting and the app dropping the device now and then, and a full descale means taking more of it apart than a simple unit. The mist also produces a steady background hush that some sleepers notice.
Skip it if: you want a humidifier with no app in the loop, since auto mode and scheduling both live in VeSync.
Best value smart pick
2. Dreo HM524S Smart Humidifier
The same 6 liter tank and 60 hour runtime as the Levoit, rated up to 550 square feet, 28 dB on low, with app control plus Alexa and Google Home, a three-angle tiltable nozzle and an oil tray, for less money. Dreo puts its auto mode accuracy within about 5 percent.
The build feels less solid than the name brands, cleaning means separating several pieces where mineral scale collects, and the optional demineralization cartridges are a recurring cost if you use them.
Skip it if: you want the sturdiest thing on your nightstand, since the savings show up in the plastics.
Best for larger rooms
3. Honeywell HEV620 Top Fill Tower Humidifier
The only evaporative unit here, and the reason to consider it is hard water: a wick filter and fan mean no white mineral dust on the furniture. A 1.7 gallon top-fill tank runs up to 24 hours on low, and a programmable digital humidistat with a timer holds a target instead of guessing at dial positions. Honeywell backs it for three years.
The wick filter is an ongoing cost that filter-free units skip, owner reviews report it gets loud on medium and high, and some report leaking around the tank seal over time.
Skip it if: you sleep lightly, since a fan and a wet wick are audible in a way ultrasonic mist is not.
Best for cold season
4. Vicks Filter Free Plus Cool Mist Ultrasonic Humidifier
A filter-free ultrasonic with five mist settings, a 180 degree nozzle, auto-dimming lights and a 1.2 gallon tank Vicks rates up to 24 hours per fill, or up to 40 hours on its lowest setting. What separates it from other cheap ultrasonics is the slot for two VapoPads, sold separately, which adds menthol vapor when someone in the house is congested.
Hard tap water will leave white dust unless you run distilled, reviews mention occasional tank leaks and durability wobbles over months, and the tank is small next to the tower units here.
Skip it if: you will never use a VapoPad, since without that you are paying for a mid-size ultrasonic humidifier.
Best budget
5. Pure Enrichment MistAire Ultrasonic Cool Mist Humidifier
Under $40 with a five year warranty, which is unusual at any price in this category. 1.7 liters, up to 25 hours on low and about 12 on high, two mist speeds, a 360 degree nozzle you can aim, a night light, and auto shut-off when the tank runs dry.
It is a small-room product, rated to roughly 250 square feet, so an open-plan bedroom will outpace it. The tank neck is narrow, which makes the inside awkward to reach, and owner reviews flag mold if it is left uncleaned.
Skip it if: you cannot commit to cleaning it on a schedule, since the narrow tank opening makes a neglected MistAire hard to scrub.
Common questions
Ultrasonic or evaporative, which should I buy?
Ultrasonic is quieter and has no filter to replace, but with hard tap water it can leave white mineral dust on nearby surfaces; distilled water avoids that. Evaporative, which here means the Honeywell HEV620, blows air through a wet wick so the minerals stay in the filter, at the cost of fan noise and a filter you buy again. Four of the five picks here are ultrasonic.
What humidity level should I aim for?
Around 40 to 50 percent is the usual bedroom target, which is what Levoit's auto mode defaults to. Push much higher and you invite condensation on windows and mold in corners; sit much lower and you are back to the dry air you bought the thing to fix.
How often do these need cleaning?
Follow the manual, and expect it to be more often than you would like. Standing water plus mineral scale is how humidifiers go wrong, and the units with narrow tank openings, the MistAire in particular, are the ones people neglect.
Do I need a smart humidifier?
Only for the humidistat, really. The useful part of the Levoit and Dreo is auto mode holding a target humidity, not the phone control. If you are happy setting a mist level by hand and refilling daily, the Vicks and the MistAire do the same job for less.