The Front Desk Review

Levoit · Updated July 2026

Classic 300S Smart Ultrasonic Humidifier: price, specs & release date

Classic 300S Smart Ultrasonic Humidifier, released 2022. Every price and spec below is linked to its source and dated — no guesses.

Source: levoit.com verified ✓ corroborated verify in ledger

SilverDeskmark58/100#6 of 15 in class

The Classic 300S Smart Ultrasonic Humidifier is listed at $79.99 on levoit.com as of 2026-07-28, #5 cheapest of 15 humidifiers (median $89.99); other retailers may be lower. It earns a Silver Deskmark — 58/100 pay-blind standing, #6 of 15 in class.

Verified Jul 28, 2026 · figures linked to their source in the table below

Cheapest humidifiers: MistAire Ultrasonic Cool Mist Humidifier — $39.99

See Classic 300S Smart Ultrasonic Humidifier on Amazon Live price at the store — may differ from the dated listed price above. As an Amazon Associate we earn from qualifying purchases.
Classic 300S Smart Ultrasonic Humidifier — Levoit
Image: levoit.com (© Levoit)

Price history

$79.99
2026-06-27→0% on record2026-07-28

Is the Classic 300S Smart Ultrasonic Humidifier a good buy?

At $80, the Classic 300S Smart Ultrasonic Humidifier is #5 cheapest of the 15 humidifiers we track, where the median is $89.99. On the spec sheet, its coverage of 505 sq ft is above the median of the 14, its runtime hours of 60 is above the median of the 14, and its noise dba of 30 is above the median of the 9.

Evidence of Record

Our data

No independent lab has measured this product yet. 1 outlet has it on record by mention only, with no hands-on measurements published to weigh its claims against — a gap in the evidence, not a verdict on the product.

A coverage record, not a rating. How we count

Review consensus · sourced & dated

What reviewers say about the Classic 300S Smart Ultrasonic Humidifier

Only one whitelisted tester yielded a readable, hands-on review: Wirecutter names the Classic 300S its humidifier runner-up, calling it nearly as powerful and reliable as its Levoit LV600S top pick with a handy night-light, but flags an unintuitive icon-only interface, tricky cleaning, and reports of tank leaks. RTINGS (paywalled) and TechGearLab (site maintenance) were unreadable and discarded.

Based on 1 review · 1 lab-tested · 2026-02-19

Tested by Wirecutter

Consistently praised

  • Nearly as powerful and reliable as Wirecutter's top-pick LV600S, and similarly avoids over-humidifying the room
  • Pleasant built-in night-light that is easy to turn off without stopping humidification
  • Same smart-home features and same two-year warranty as the top pick

Commonly flagged

  • Icon-only onboard buttons are less intuitive and harder to navigate than the top pick's labeled buttons
  • Reports of the tank leaking after a few months of use (Amazon reviewers and Wirecutter staffers)
  • Harder to clean than the top pick due to the awkward water-vapor chimney and complex basin water channel
  • Ultrasonic design requires distilled or demineralized water to avoid chalky white mineral dust

Where reviewers disagree Single readable source, so no cross-tester comparison is possible. RTINGS is paywalled/JS-only and TechGearLab was down for planned site maintenance, so both were discarded and Wirecutter's verdict stands unchallenged here.

The sources (1)

Wirecutter lab-tested ·

The Levoit Classic 300S Ultrasonic Smart Humidifier performs nearly as well as our top pick.
But the user interface isn’t quite as intuitive, and we’ve also heard some complaints about the tank leaking when it’s lifted off the basin.
The onboard buttons are more streamlined, but they’re also harder to navigate.

Specifications

Price (US)$79.99 MSRP from levoit.com / VeSync; occasional sale price ~$69.98
BrandLevoit
Released2022
Typeultrasonic
Tank capacity liters6
Coverage (sq ft)505
Runtime hours60
Smart Wi-FiYes
Top fillYes
Noise dba30

Source: levoit.com (verified 2026-06-15) · corroborated by us.vesync.com. VERIFIED 2026-06-15. Price ($79.99), tank (6 L), coverage (215-505 ft²), runtime (60 hr low), noise (≤30 dB), top-fill, and Wi-Fi all confirmed on the official Levoit product page and corroborated by the VeSync store listing (which also loads at $79.99). Release year inferred from VeSync product documentation dated February 2022. All values retained as drafted.

Is the Classic 300S Smart Ultrasonic Humidifier worth it vs cheaper humidifiers?

Classic 300S Smart Ultrasonic Humidifier against its closest cheaper and pricier humidifiers on the specs that matter — every value sourced. See all 15 ranked

ProductPriceTypeTank capacity litersCoverage (sq ft)Runtime hoursSmart Wi-Fi
Classic 300S Smart Ultrasonic Humidifier this$79.99ultrasonic650560Yes
HM524S Smart Cool Mist Humidifier$69.99ultrasonic650060Yes
HM713S Smart Warm & Cool Mist Humidifier$89.99ultrasonic655060Yes

Frequently asked questions

What do reviewers say about the Classic 300S Smart Ultrasonic Humidifier?

Only one whitelisted tester yielded a readable, hands-on review: Wirecutter names the Classic 300S its humidifier runner-up, calling it nearly as powerful and reliable as its Levoit LV600S top pick with a handy night-light, but flags an unintuitive icon-only interface, tricky cleaning, and reports of tank leaks. RTINGS (paywalled) and TechGearLab (site maintenance) were unreadable and discarded. Praised: Nearly as powerful and reliable as Wirecutter's top-pick LV600S, and similarly avoids over-humidifying the room; Pleasant built-in night-light that is easy to turn off without stopping humidification; Same smart-home features and same two-year warranty as the top pick. Flagged: Icon-only onboard buttons are less intuitive and harder to navigate than the top pick's labeled buttons; Reports of the tank leaking after a few months of use (Amazon reviewers and Wirecutter staffers); Harder to clean than the top pick due to the awkward water-vapor chimney and complex basin water channel; Ultrasonic design requires distilled or demineralized water to avoid chalky white mineral dust. (From 1 tester review, 1 lab-tested.)

How much does the Classic 300S Smart Ultrasonic Humidifier cost?

The Classic 300S Smart Ultrasonic Humidifier has a US price of $79.99 (MSRP from levoit.com / VeSync; occasional sale price ~$69.98), as of 2026-06-15.

How does the Classic 300S Smart Ultrasonic Humidifier compare on price?

At $80, the Classic 300S Smart Ultrasonic Humidifier is #5 cheapest of the 15 humidifiers we track, where the median is $89.99.

Has the Classic 300S Smart Ultrasonic Humidifier's price changed?

No — the Classic 300S Smart Ultrasonic Humidifier has held at $79.99 since 2026-06-27.

What is the lowest price the Classic 300S Smart Ultrasonic Humidifier has been?

The lowest we have recorded for the Classic 300S Smart Ultrasonic Humidifier is $69.99 on 2026-07-25.

Is now a good time to buy the Classic 300S Smart Ultrasonic Humidifier?

The Classic 300S Smart Ultrasonic Humidifier is currently $79.99; the lowest we have recorded is $69.99 (2026-07-25). Every price is dated, so you can judge it against its own history.

When was the Classic 300S Smart Ultrasonic Humidifier released?

The Classic 300S Smart Ultrasonic Humidifier was released 2022.

What are the Classic 300S Smart Ultrasonic Humidifier's key specs?

Classic 300S Smart Ultrasonic Humidifier (Levoit): type ultrasonic, tank capacity liters 6, coverage sqft 505, runtime hours 60, smart wifi Yes. Full sourced spec sheet verified 2026-06-15.

Price of record: $79.99 at levoit.com, 2026-07-28. Other retailers may be lower — check the current price:

See Classic 300S Smart Ultrasonic Humidifier on Amazon As an Amazon Associate we earn from qualifying purchases.

Similar humidifiers

Nearest in price — swipe to browse. Every pick sourced and dated.

All humidifiers ranked · Open data & methodology · Queryable via MCP

Compare with

Head-to-head

Cheaper humidifiers

Step up

More from Levoit

Part of the Home air & climate cluster

Cleaner, drier, cooler air — compared on the numbers that matter. Same sourcing, same dated prices: