What to know about Levoit Superior Studio Smart 450S
Why it stands out
Why we like it
The antimicrobial surfaces and ASTM G21 result are Levoit's own claims, so treat them as such.
What to know
Score breakdown
How easy it is to fully disassemble, reach and dry every wet surface. Covers dishwasher-safe or boilable parts, mold-inhibiting features, and parts count. Weighted heavily by BabyGearLab (35%) and stressed by Babylist, Forbes and RTINGS.
Ability to raise and hold nursery humidity in the 40–50% range: tested output, coverage for the room size, overnight runtime per tank, and humidistat or auto-mode accuracy.
Measured or rated noise, absence of gurgles and beeps, dimmable or switch-off lights, and nursery extras like a red night light or white noise that help rather than disturb sleep.
Cool-mist or evaporative design (no burn risk), stainless or BPA-free water-contact materials, and white-dust/mineral mitigation such as demineralization filters or evaporative design. Also covers tip and leak resistance, auto shut-off, and any recalls or regulatory warnings.
Filling (top-fill vs flip-tank), controls usable in the dark, app reliability, leak-free refills, and how easy it is to move or place.
Street price plus ongoing costs (filters, cartridges), weighed against warranty length and performance.
Levoit Superior Studio Smart 450S specs
Design
- Humidifier type
- Evaporative (washable wick)
Health & materials
- Water tank material
- Antimicrobial-treated water-contact surfaces (resin not disclosed)
Performance
- Tank capacity
- 4.5 L
- Max runtime per tank (manufacturer)
- 40 hours
- Rated room coverage
- 600 sq ft
- Built-in humidistat / auto mode
- Yes
- Mist temperature
- Cool (invisible vapor)
Sleep
- Noise (manufacturer-rated or lab-measured)
- 45 dB
- Built-in night light
- No
- Built-in white-noise / sound machine
- No
Ease of use
- Top-fill tank
- Yes
Running cost
- Requires replaceable filter/cartridge
- Yes
Features
- Wi-Fi app / voice control
- Yes
Health
- White dust / mineral dispersal risk (per EPA type guidance)
- Low – evaporative (EPA: not expected to disperse substantial minerals)
- Antimicrobial / UV measures
- Manufacturer claim: EPA-registered antimicrobial wick and surfaces; ASTM G21 Grade 0 (Levoit)
Ownership
- Wick replacement interval / cost
- Washable wick rated up to 2 years with weekly washing; replacement $24.99 (Levoit press release)
- Warranty
- 2 years
Compare prices
Prices are checked periodically. Older amounts are labeled with their last verification date.
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Prices and availability may change. The retailer's price and availability at checkout govern the transaction.
| Retailer | Price | Availability | |
|---|---|---|---|
| Walmart |
$125.99
Last known price — verified Oct 31, 2026; may have changed |
Check at retailer | Check at retailer |
| AmazonLowest | $139.99 | In Stock | View deal |
Based on 3 retailer price observations captured during the last 90 days.