Best Dreo Humidifier for Multi-Day Runtime: Large-Tank Smart Picks
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The short answer: The DREO Smart Humidifier 735S 11L is our top pick for running for days between refills: its 11 L tank and 100-hour runtime mean the longest stretch between fills in this family, at $139.99. If you want the lowest entry price, the 713S 6L at $89.99 covers smaller rooms, while the 717S 8L at $119.99 adds a 600 sq. ft. rating and 80-hour runtime for $30.00 more.
- Best overall: Smart Humidifier 735S 11L — 11 L tank and 100-hour runtime give the longest refill interval here, and at 26 dB it is the quietest of the tank-rated models. See price at dreo.com
- Best value: Smart Humidifier 717S 8L — 8 L tank, 80-hour runtime and a 600 sq. ft. applicable area for $119.99, $20.00 less than the 11 L 735S. See price at dreo.com
- Best compact: Smart Humidifier 713S 6L — The 6 L tank and 6 lb, 11.41 x 6.14 x 13.93 in body make it the smallest and lightest option at $89.99, the lowest price in the family. See price at dreo.com
- Best for large rooms: Smart Humidifier 747S — Rated for 700 sq. ft. and listed at 21 dB, the quietest figure in the family, at the same $119.99 as the 8 L 717S. See price at dreo.com
| Product | noise db | dimensions | tank l | weight | Price now | 90-day low | Rating | |
|---|---|---|---|---|---|---|---|---|
| Smart Humidifier 713S 6L | 28 dB | 11.41D x 6.14W x 13.93H | 6 L | 6 lb | $89.99 | — | 4.8 | dreo.com |
| Smart Humidifier 717S 8L | 28 dB | 12.01"D x 6.73"W x 14.45"H | 8 L | 6.9 lb | $119.99 | — | 4.9 | dreo.com |
| Smart Humidifier 735S 11L | 26 dB | 10.24"D x 8.86"W x 30.91"H | 11 L | 5.9 lb | $139.99 | — | 4.9 | dreo.com |
| Smart Humidifier 747S | 21 dB | — | — | — | $119.99 | — | — | dreo.com |
| Smart Humidifier 774S 10L | 32 dB | 9.76D x 9.64W x 24.68H | 10 L | — | $159.99 | — | 4.8 | dreo.com |
Smart Humidifier 713S 6L
Pros
- 6 L tank holds enough for days between refills
- Runs at a quiet 28 dB
- Rated 4.8 by users
- At $89.99 it is the cheapest of these Dreo humidifiers
Cons
- No price history is available for this model
- 26 W output is lower than the larger-tank Dreo models
Who it's for: Anyone wanting a large-tank smart humidifier that runs for days between refills at the lowest price in the Dreo lineup.
Smart Humidifier 717S 8L
Pros
- 8 L tank with up to 80 hours of run time between refills
- 28 dB noise level for quiet operation
- Covers rooms up to 600 sq. ft.
- Rated 4.9 by users
Cons
- At $119.99, costs $30.00 more than the 6 L Smart Humidifier 713S
- Weighs 6.9 lb, the heaviest of the listed Dreo humidifiers
Who it's for: Anyone wanting a large 8 L tank that runs for days between refills in rooms up to 600 sq. ft.
Smart Humidifier 735S 11L
Pros
- 11 L tank is the largest in the lineup, paired with a 100-hour runtime for days between refills
- Rated 4.9, the top rating alongside the 717S
- Quiet at 26 dB, quieter than the 713S, 717S and 774S
- Weighs 5.9 lb, lighter than the 6 lb 713S and 6.9 lb 717S
Cons
- At $139.99 it costs $50 more than the 713S 6L and $20 more than the 717S 8L
- 30.91-inch height is the tallest here, so it needs more vertical clearance
Who it's for: Buyers who want the biggest tank and longest runtime in the Dreo humidifier family and will pay $139.99 for it.
Smart Humidifier 747S
Pros
- 21 dB noise rating is the quietest among the listed Dreo humidifiers
- Covers up to 700 square feet, the largest floor area in the lineup
- Priced at $119.99, the same as the 717S 8L and $20.00 less than the 735S 11L
Cons
- No tank capacity listed, so runtime between refills is unknown
- No customer rating listed
Who it's for: Buyers who want the quietest, widest-coverage Dreo humidifier at a mid-range $119.99 price.
Smart Humidifier 774S 10L
How we chose
How we chose: We compared tank size, listed runtime, noise rating, room coverage and current price across the family, favoring the longest refill intervals and the lowest noise.
Tank size and runtime carried the most weight. The 735S 11L pairs an 11 L tank with a 100 H runtime, the longest stretch between fills here, and its 26 dB rating is the lowest of the models that list one. The 717S 8L lists 80 Hours and 600 sq. ft. at 28 dB; the 713S 6L also lists 28 dB. The 774S 10L lists a 10 L tank at 32 dB, and the 747S lists 700 Square Feet at 21 dB.
Price decided the rest. The 713S 6L is the lowest entry at $89.99. The 717S 8L is $30.00 more, and the 735S 11L is $50.00 more than the 713S 6L and $20.00 more than the 717S 8L. The 747S matches the 717S 8L at $119.99, and the 774S 10L is $70.00 more than the 713S 6L.
Who should skip these
If you need coverage beyond 700 sq. ft., none of these will do. The largest rating here is the 747S at 700 Square Feet, and the 717S 8L is rated for 600 sq. ft. The 713S 6L, 735S 11L, and 774S 10L list no room rating at all.
If a tank smaller than 6 L is a dealbreaker, look elsewhere. The smallest tank in this group is 6 L on the 713S 6L; the others hold 8 L, 10 L, and 11 L.
If you want a model without a smart app, skip the whole lineup. Every humidifier here is a smart model.
Price may also rule some of these out. The 713S 6L is $89.99, the 717S 8L and 747S are $119.99 each, the 735S 11L is $139.99, and the 774S 10L is $159.99. The 774S 10L costs $70.00 more than the 713S 6L, and the 735S 11L costs $50.00 more.
How to choose the right one
Start with tank size and listed runtime, because those set how long you can go between refills. The 735S 11L pairs an 11 L tank with a 100-hour runtime, the longest stretch in this family. The 717S 8L lists an 8 L tank and an 80-hour runtime. The 774S 10L has a 10 L tank, and the 713S 6L has a 6 L tank. The 747S lists no tank size or runtime, so compare it on the specs it does give.
Then match the unit to the room and to how quiet it needs to be. The 717S 8L is rated for 600 sq. ft., and the 747S for 700 Square Feet. Noise ratings run from 21 dB on the 747S and 26 dB on the 735S to 28 dB on the 713S and 717S and 32 dB on the 774S 10L.
On price, the 713S 6L is $89.99, the 717S 8L and 747S are $119.99 each, the 735S 11L is $139.99, and the 774S 10L is $159.99. The 735S 11L costs $50.00 more than the 713S 6L, and the 774S 10L costs $20.00 more than the 735S 11L.
Questions readers ask
Which Dreo humidifier has the largest tank?
The DREO Smart Humidifier 735S 11L has the largest tank at 11 L, followed by the 774S 10L at 10 L and the 717S 8L at 8 L.
How long can these humidifiers run between refills?
The 717S 8L is rated for 80 hours of run time and the 735S 11L for 100 hours.
Which model is the quietest?
The 747S is rated at 21 dB, quieter than the 735S at 26 dB, the 713S and 717S at 28 dB, and the 774S at 32 dB.
How do the prices compare?
The 713S 6L is $89.99. The 717S 8L and 747S are $119.99 each, the 735S 11L is $139.99, and the 774S 10L is $159.99.
Which model covers the most floor area?
The 747S is listed for 700 square feet and the 717S 8L for 600 square feet.
Update history
- — Prices and availability refreshed
- — First published
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