Humidifiers / Levoit Classic 300S (Classic300S) vs Dreo HM713S 6L Smart Humidifier
Levoit Classic 300S (Classic300S) vs Dreo HM713S 6L Smart Humidifier
Levoit Classic 300S (Classic300S)
The smart ultrasonic everyone buys — and the one that will powder your nightstand.
Wins overall by 0.0 points
Quick Verdict
This is close. The Levoit Classic 300S (Classic300S) edges ahead by 0.0 points, but that margin is inside the noise — the Dreo HM713S 6L Smart Humidifier is a defensible pick on its own terms. Warm mist that never boils: 86°F is comfort, not sterilisation.
The Levoit Classic 300S (Classic300S) and Dreo HM713S 6L Smart Humidifier are both closely matched humidifier models, and the Levoit Classic 300S (Classic300S) is $10 cheaper than the Dreo HM713S 6L Smart Humidifier ($79.99 vs $89.99). On Cleaning & Access, the Levoit Classic 300S (Classic300S) leads (7.5 vs 6.5/10) — whether the tank opening takes an adult hand, whether any part is dishwasher-safe or boilable, and how realistic the manufacturer's stated cleaning interval is to actually keep to. On Output, the Dreo HM713S 6L Smart Humidifier leads (7.5 vs 7.0/10) — actual moisture put into the room per day in gallons or mL/hr, judged against the coverage the manufacturer claims — not the square-footage number on the box. On Runtime & Refill Interval, the Levoit Classic 300S (Classic300S) leads (8.5 vs 8.0/10) — how long a full tank really lasts at a useful output setting, rather than at the lowest setting the runtime is quoted for, and how painful the refill is. Overall, the Levoit Classic 300S (Classic300S) scores 6.8/10 across our 8 scoring categories versus 6.8/10 for the Dreo HM713S 6L Smart Humidifier, though the gap is close enough that your specific use case should decide it. Below, we break down the full spec sheet, category-by-category scores, and exactly who should buy which one.
Side-by-Side Comparison
| Spec | Levoit Classic 300S (Classic300S) | Dreo HM713S 6L Smart Humidifier |
|---|---|---|
| Price | $79.99 | $89.99 |
| Release Year | 2021 | 2023 |
| Humidification Technology | Ultrasonic cool mist — a piezoelectric disc shatters water into a visible aerosol that is blown out of a nozzle | Ultrasonic, sold as "cool and warm mist". The warm mode pre-heats the water before the piezo disc atomises it — it does not boil it |
| White Dust & Mineral Aerosol | Yes, and there is no fix sold for it. the EPA's "Use and Care of Home Humidifiers" states that ultrasonic and impeller humidifiers "are very efficient at dispersing minerals in tap water into the air" and that they "can disperse materials, such as microorganisms and minerals, from their water tanks into indoor air". Levoit sells no demineralisation cartridge for the Classic 300S — the part in the box is an aroma pad and a water-filter sponge, neither of which removes dissolved minerals. TechGearLab's tester warns that on tap water the minerals "eventually start to be noticeable on your furniture". Distilled water is the only real remedy, at roughly $1-1.50 per gallon | Yes, in both modes. Warming the water does not change the mechanism: a piezo disc still aerosolises everything dissolved in it. the EPA's "Use and Care of Home Humidifiers" states that ultrasonic and impeller humidifiers "are very efficient at dispersing minerals in tap water into the air" and that they "can disperse materials, such as microorganisms and minerals, from their water tanks into indoor air". Dreo fits a mineral-absorption pad and sells no first-party replacement, so the aftermarket pads on Amazon are third-party and unverified |
| Tank Capacity | 1.58 gal / 6 L, top-fill | 6 L / 1.58 gal, top-fill |
| Rated Output per Day | Not published by the manufacturer — Levoit publishes runtime and a 26W rated power but no mL/hr or gallons-per-day output figure anywhere on the spec sheet | Published, unusually: 300 mL/hr in cool mist, 500 mL/hr in warm mist — 7.2 L/day and 12 L/day respectively if run continuously. Both exceed the 6 L tank, so the 60-hour runtime cannot be a high-output figure |
| Quoted Runtime (and at which setting) | "Up to 60 hours" — Levoit's own page attaches that figure to the LOW mist setting. 6 L over 60 h is only about 100 mL/hr; on high the same tank empties in a small fraction of that time | "Up to 60 hours" — arithmetic settles this one. 6 L at the published 300 mL/hr cool-mist rate is 20 hours, and at 500 mL/hr warm it is 12. The 60-hour claim implies about 100 mL/hr, i.e. the lowest setting only |
| Rated Room Coverage | 215-505 ft² / 20-47 m² (Levoit) | Not published by Dreo on the product page — the only sizing language is the retail headline "for Large Room". Dreo publishes output instead, which is arguably the more useful number |
| Humidistat | Real closed-loop humidistat. An onboard humidity sensor feeds Auto mode, which holds 40-50% RH or a custom setpoint; TechGearLab called the auto mode "decently accurate" | Real closed-loop humidistat. Dreo rates the sensor at ±5% precision with a 30-90% RH adjustable target, plus manual, auto and sleep modes and 30 days of app-side history |
| Noise | Levoit claims 30dB or less. TechGearLab measured 38.5dB and describes an ultrasonic whine plus a steady dripping noise as the tank empties — a bedroom-relevant gap between claim and measurement | 28 dB claimed by Dreo — a manufacturer figure with no independent measurement published, and comparable ultrasonics measure several dB higher in third-party testing |
| Filters & Cartridges (Annual Cost) | No wick and no demineralisation cartridge exist for this model, so the strictly required consumable cost is $0/yr. In practice the running cost is distilled water — roughly $1-1.50 a gallon, or about $45-90 over a 60-day heating season at one tank every two days | A mineral-absorption pad sits in the tank. Dreo does not sell a first-party replacement pack; the only replacements listed are third-party multi-packs, so budget is unclear and the pad does not eliminate white dust regardless |
| Cleaning Burden & Dishwasher-Safe Parts | Above average. The top-fill opening takes an adult hand and the vapour tower has clearance around it; TechGearLab scored cleaning 8.5/10 but flagged small crevices in the base. Nothing is dishwasher-safe. The EPA advice is to "clean portable humidifiers every third day" | Top-fill opening takes a hand and the aroma tray lifts out, but the warm-mist heater adds a scale surface an ordinary cool-mist ultrasonic does not have. Nothing is dishwasher-safe. Dreo ships a cleaning guide and brush in the box, which is more than most |
| UV / Antimicrobial Claim | None claimed. No UV lamp, no silver-ion or antimicrobial coating, no bacteriostatic additive supported | None claimed. No UV lamp, no antimicrobial coating. The warm mode is not hot enough to sterilise anything |
| Mist Temperature & Burn Risk | Cool mist at room temperature — no burn risk, but equally no thermal kill step, so whatever is living in the tank is aerosolised with the water | This is the trap. Dreo's own spec says warm mode "reaches 86°F in 5 minutes" — 30°C, barely above body temperature. That is comfort, not sterilisation: a genuine warm-mist unit boils at 212°F. It also means the 280W warm mode buys you no hygiene benefit at all, and the mist is not sterile |
| Warranty | 24 months | 12 months |
| Colors | White, Gray, Blue | Silver, Blue |
Category Scores
Freedom From White Dust
The Levoit Classic 300S (Classic300S) and Dreo HM713S 6L Smart Humidifier are level here, at 2.5/10 each. the thing marketing never mentions. Ultrasonic humidifiers aerosolise whatever is dissolved in the water and deposit it as white dust on furniture — the EPA notes they are 'very efficient at dispersing minerals in tap water into the air', along with microorganisms from the tank. Evaporative and boiled-steam units do not do this at all. A high score means the technology cannot produce dust; a low score means you are buying distilled water for the life of the machine. is not what separates these two — look to the categories where the scores diverge.
Output
The Dreo HM713S 6L Smart Humidifier leads clearly here, 7.5 against 7.0 — a 0.5-point margin on actual moisture put into the room per day in gallons or mL/hr, judged against the coverage the manufacturer claims — not the square-footage number on the box. If that is what you are buying for, the Levoit Classic 300S (Classic300S) does not close the gap elsewhere.
Runtime & Refill Interval
The Levoit Classic 300S (Classic300S) leads clearly here, 8.5 against 8.0 — a 0.5-point margin on how long a full tank really lasts at a useful output setting, rather than at the lowest setting the runtime is quoted for, and how painful the refill is. If that is what you are buying for, the Dreo HM713S 6L Smart Humidifier does not close the gap elsewhere.
Cleaning & Access
The Levoit Classic 300S (Classic300S) leads clearly here, 7.5 against 6.5 — a 1.0-point margin on whether the tank opening takes an adult hand, whether any part is dishwasher-safe or boilable, and how realistic the manufacturer's stated cleaning interval is to actually keep to. If that is what you are buying for, the Dreo HM713S 6L Smart Humidifier does not close the gap elsewhere.
Running Cost
The Dreo HM713S 6L Smart Humidifier leads clearly here, 6.0 against 5.5 — a 0.5-point margin on wicks, demineralisation cartridges, antimicrobial additives, distilled water and electricity — everything you keep paying after the purchase. If that is what you are buying for, the Levoit Classic 300S (Classic300S) does not close the gap elsewhere.
Quietness
The Dreo HM713S 6L Smart Humidifier leads clearly here, 7.5 against 7.0 — a 0.5-point margin on noise at the setting people actually run it overnight, weighted toward independently measured figures over manufacturer claims. If that is what you are buying for, the Levoit Classic 300S (Classic300S) does not close the gap elsewhere.
Humidity Control
The Levoit Classic 300S (Classic300S) and Dreo HM713S 6L Smart Humidifier are level here, at 8.5/10 each. whether there is a genuine closed-loop humidistat holding a setpoint, or just fixed output steps and a timer with a humidity label on it is not what separates these two — look to the categories where the scores diverge.
Safety Around Children
The Levoit Classic 300S (Classic300S) leads clearly here, 8.0 against 7.5 — a 0.5-point margin on burn and scald risk from boiled or heated water, tipping hazard, and whether the hygiene story holds up in a nursery. If that is what you are buying for, the Dreo HM713S 6L Smart Humidifier does not close the gap elsewhere.
Best For
Choose the Levoit Classic 300S (Classic300S) if…
- • Cleaning & Access matters most to you — the Levoit Classic 300S (Classic300S) scores 7.5/10 here (whether the tank opening takes an adult hand, whether any part is dishwasher-safe or boilable, and how realistic the manufacturer's stated cleaning interval is to actually keep to).
- • Runtime & Refill Interval matters most to you — the Levoit Classic 300S (Classic300S) scores 8.5/10 here (how long a full tank really lasts at a useful output setting, rather than at the lowest setting the runtime is quoted for, and how painful the refill is).
- • You want to spend less — it's $10 cheaper.
- • Your main use case is easy-clean.
Choose the Dreo HM713S 6L Smart Humidifier if…
- • Output matters most to you — the Dreo HM713S 6L Smart Humidifier scores 7.5/10 here (actual moisture put into the room per day in gallons or mL/hr, judged against the coverage the manufacturer claims — not the square-footage number on the box).
- • Running Cost matters most to you — the Dreo HM713S 6L Smart Humidifier scores 6.0/10 here (wicks, demineralisation cartridges, antimicrobial additives, distilled water and electricity — everything you keep paying after the purchase).
- • Quietness matters most to you — the Dreo HM713S 6L Smart Humidifier scores 7.5/10 here (noise at the setting people actually run it overnight, weighted toward independently measured figures over manufacturer claims).
- • Your main use case is warm-mist.
Pros & Cons
Levoit Classic 300S (Classic300S)
Pros
- +One of the few sub-$100 humidifiers with a genuine closed-loop humidistat rather than a timer wearing a humidity label
- +6L top-fill tank goes two nights between refills at bedroom output levels
- +Auto mode plus app scheduling actually works unattended — TechGearLab rated the humidity tracking accurate
- +Cleaning access is unusually good for an ultrasonic: wide top opening, clearance round the tower
Cons
- −Ultrasonic, so it aerosolises every mineral in the water as white dust on furniture and into the air, and Levoit sells no demineralisation cartridge for it — distilled water is the only fix
- −Levoit publishes no output figure at all: no mL/hr, no gallons per day, so the "215-505 ft²" coverage claim cannot be checked against anything
- −The "up to 60 hours" runtime is the low setting only; run it on high in a genuinely dry room and you are refilling daily
- −Measured 38.5dB against a claimed 30dB, with an audible ultrasonic whine and dripping as the tank drains
- −No antimicrobial or UV stage of any kind, so the every-third-day cleaning the EPA recommends is the entire hygiene plan
Dreo HM713S 6L Smart Humidifier
Pros
- +One of the very few humidifiers at any price that publishes a real output figure — 300 mL/hr cool, 500 mL/hr warm
- +Genuine closed-loop humidistat rated ±5% with a 30-90% setpoint range and 30 days of app history
- +6L top-fill tank plus app, Alexa and Google control for $89.99
- +Because output is published, you can actually compute the refill interval instead of trusting a runtime claim
Cons
- −"Warm mist" tops out at 86°F by Dreo's own spec — warm water, not steam. It does not sterilise, and it costs 280W against 26W in cool mode
- −Ultrasonic in both modes, so it aerosolises minerals as white dust; the mineral-absorption pad reduces scale, it does not stop dust
- −The 60-hour runtime and the published 300-500 mL/hr output contradict each other — 6L at 300 mL/hr is 20 hours, so 60 hours is the lowest setting
- −Dreo sells no first-party replacement mineral pad; the only options are unverified third-party multi-packs
- −Twelve-month warranty and no published coverage figure or independent noise measurement
Shop by Need
FAQs
Is the Levoit Classic 300S (Classic300S) or Dreo HM713S 6L Smart Humidifier better overall?+
Based on our 8-category scoring, the Levoit Classic 300S (Classic300S) comes out ahead overall. See the full breakdown in the scores section above — the right pick still depends on which categories matter most for your use case.
Which is better for Cleaning & Access, the Levoit Classic 300S (Classic300S) or the Dreo HM713S 6L Smart Humidifier?+
The Levoit Classic 300S (Classic300S) scores higher on Cleaning & Access (7.5/10 vs 6.5/10) — whether the tank opening takes an adult hand, whether any part is dishwasher-safe or boilable, and how realistic the manufacturer's stated cleaning interval is to actually keep to.
Which is better for Output, the Levoit Classic 300S (Classic300S) or the Dreo HM713S 6L Smart Humidifier?+
The Dreo HM713S 6L Smart Humidifier scores higher on Output (7.5/10 vs 7.0/10) — actual moisture put into the room per day in gallons or mL/hr, judged against the coverage the manufacturer claims — not the square-footage number on the box.
Which is better for Runtime & Refill Interval, the Levoit Classic 300S (Classic300S) or the Dreo HM713S 6L Smart Humidifier?+
The Levoit Classic 300S (Classic300S) scores higher on Runtime & Refill Interval (8.5/10 vs 8.0/10) — how long a full tank really lasts at a useful output setting, rather than at the lowest setting the runtime is quoted for, and how painful the refill is.
Which is better for Running Cost, the Levoit Classic 300S (Classic300S) or the Dreo HM713S 6L Smart Humidifier?+
The Dreo HM713S 6L Smart Humidifier scores higher on Running Cost (6.0/10 vs 5.5/10) — wicks, demineralisation cartridges, antimicrobial additives, distilled water and electricity — everything you keep paying after the purchase.
Is the Levoit Classic 300S (Classic300S) worth the price difference over the Dreo HM713S 6L Smart Humidifier?+
The Levoit Classic 300S (Classic300S) is the cheaper option at $79.99 versus $89.99. Whether the pricier model is "worth it" depends on how much you value its lead in Cleaning & Access.
Which is better suited to my use case?+
The Levoit Classic 300S (Classic300S) is the better fit if you mainly care about easy-clean. The Dreo HM713S 6L Smart Humidifier is the better fit for warm-mist.
What's the warranty on the Levoit Classic 300S (Classic300S) vs the Dreo HM713S 6L Smart Humidifier?+
The Levoit Classic 300S (Classic300S) ships with a 24-month warranty; the Dreo HM713S 6L Smart Humidifier ships with a 12-month warranty. Always confirm current terms on the manufacturer's site before buying.
Should I wait for the next model instead of buying either of these?+
If either model is more than two years old, a successor may be close — check the "Latest Model" link on each product page. Otherwise, both are current, well-supported options and there's no strong reason to wait.
Cheaper Option
Levoit Classic 300S (Classic300S) — $79.99
Premium Option
Honeywell HCM350 Germ Free Cool Mist Humidifier (HCM350W / HCM350B) — $89.95
Specifications and prices for both products last verified . Scores are calculated from published specifications — see how we compare products.