Products
Tested using Methodology v1.0
Updated Sep 25, 2026 03:03 PM
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Tested using Methodology v1.0
Updated Oct 01, 2026 02:21 PM
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Amazon
Type
Ultrasonic
Mist Temperature
Cool
Runtime
38 hrs
Humidistat
Yes
Type
Evaporative
Mist Temperature
Cool
Runtime
11 hrs
Humidistat
Yes
Our Verdict
Levoit Classic 300S
Blueair InvisibleMist
The Blueair InvisibleMist raises humidity more effectively than the Levoit Classic 300S. The Blueair relies on evaporative humidification, while the Levoit uses an ultrasonic system, though both come with a built-in humidistat, app support, and similar advertised room coverage. In our testing, the InvisibleMist made a bigger dent in humidity levels, so it's the better pick if a bigger jump in humidity matters most to you. The Levoit does last much longer between refills, though, thanks to a substantially larger tank.
Variants
- Classic 300S (White/Blue)
- InvisibleMist (White)
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White/Blue
Classic 300S
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Amazon
White
InvisibleMist
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Amazon
White/Blue
Classic 300S
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Levoit
White
InvisibleMist
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Blueair
White/Blue
Classic 300S
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BestBuy.com
White
InvisibleMist
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Walmart.com
White/Blue
Classic 300S
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Walmart.com
White
InvisibleMist
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Lowes.com
White/Blue
Classic 300S
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Lowes.com
White
InvisibleMist
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HomeDepot.com
White/Blue
Classic 300S
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HomeDepot.com
White
InvisibleMist
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BestBuy.com
White
InvisibleMist
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B&H
Main Differences for
Home
Home
Threshold
Home
7.3
7.5
Runtime
9.3
5.4
Cleaning
6.0
7.5
Humidification Capacity
7.2
7.8
Full Comparison
Design
Size
8.5
8.4
Device Dimensions
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Compare High-Res
Height
34 cm (13.5")
38 cm (15.0")
Width
25 cm (9.6")
24 cm (9.3")
Depth
20 cm (7.8")
24 cm (9.3")
Power Cord Length
1.66 m (5.4 ft)
1.85 m (6.1 ft)
Cleaning
6.0
7.5
Parts
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Compare High-Res
Cleaning
Dishwasher Safe
No
No
Features
Controls
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Compare High-Res
Type
Ultrasonic
Evaporative
Mist Temperature
Cool
Cool
Humidistat
Yes
Yes
Water Sterilization
No
No
Essential Oil Compatible
Yes
No
Auto-Off
Yes
Yes
Smartphone App
Yes
Yes
Runtime
9.3
5.4
Tank
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Compare High-Res
Tank Refill Type
Top Fill
Top Fill
Tank Usable Capacity
6.8 L (1.8 gal)
3.0 L (0.8 gal)
Runtime
38 hrs
11 hrs
Performance
Humidification Capacity
7.2
7.8
Tested Humidification
Preview Graph
Preview Graph
Time From 30% To 60%
65 min
52 min
Advertised Coverage
505ft²
500ft²
Water Emitted By The Humidifier
194 ml (6.6 oz)
214 ml (7.2 oz)
Water Evaporated By The Environment
161 ml (5.4 oz)
164 ml (5.5 oz)
Tested Humidification Capacity
4.3 LPD
6.0 LPD
Humidifier Efficiency
7.6
8.5
Humidifier Energy Consumption
25 Wh
6 Wh
Humidifier Efficiency
6.4L/kWh
26.5L/kWh
Overall Efficiency
8.4
8.5
Tested Efficiency
Preview Graph
Preview Graph
Energy Required For Evaporation
101 Wh
103 Wh
Overall Energy Required
126 Wh
109 Wh
Overall Efficiency
1.3L/kWh
1.5L/kWh
Noise
8.9
8.5
Noise Levels
Noise @ Highest Setting
33.5dBA
41.5dBA
Noise @ Lowest Setting
33.0dBA
31.9dBA
Check Price
White/Blue
Classic 300S
SEE PRICE
Amazon
White
InvisibleMist
SEE PRICE
Amazon
White/Blue
Classic 300S
SEE PRICE
Levoit
White
InvisibleMist
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Blueair
White/Blue
Classic 300S
SEE PRICE
BestBuy.com
White
InvisibleMist
SEARCH
Walmart.com
White/Blue
Classic 300S
SEARCH
Walmart.com
White
InvisibleMist
SEARCH
Lowes.com
White/Blue
Classic 300S
SEARCH
Lowes.com
White
InvisibleMist
SEARCH
HomeDepot.com
White/Blue
Classic 300S
SEARCH
HomeDepot.com
White
InvisibleMist
SEARCH
BestBuy.com
White
InvisibleMist
SEARCH
B&H
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Levoit Classic 300S
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Comments
Levoit Classic 300S vs Blueair InvisibleMist: Main Discussion
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