The catch
Dreo Dehumidifier 711S
When WIRED measured it working hard, the sound went above 60 dB.
Side by side
Dreo 711S vs Dreo 733S: 733S’s headline is not its federal-test rate, and 711S has more tank room
Quick verdict
For an open damp space where you want the larger reservoir and higher published airflow, Dreo 711S is the pick. Dreo 733S fits if its capacity suits your room and you value the app's energy tracking. The 73-pint headline on the 733S is not its current federal-test removal rate, so do not buy on the biggest number alone.
Before you buy
Why, and what it costs you
The larger tank holds roughly half a liter more
711S has about 0.57 liter more tank than 733S.
Where this comes from
2 US gallons ×3.78541 =7.57 liters. 7.57 −7 =0.57 liter, which is about 8.2% above 7 liters.
The catch
Dreo Dehumidifier 733S
Its 73-pint headline was set under hot, saturated conditions instead of the current federal test.
Dreo Dehumidifier 711S
- Why pick it
- A bit more water storage appeals to you
- The higher published air-circulation rate is what you want
- The catch
- When WIRED measured it working hard, the sound went above 60 dB.
Dreo Dehumidifier 733S
- Why pick it
- You want energy and cost tracking in the app
- A 22-pint federal-test class unit matches your moisture load
- The catch
- Its 73-pint headline was set under hot, saturated conditions instead of the current federal test.
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What this page compares
Dreo 711S and 733S side by side on normalized tank volumes, airflow and app tools. Their headline pint numbers should not be read as coming from a common test.
Which one fits
Pick the situations that sound like you
Want the higher published rate of air circulation
711S is listed at 210 CFM versus 163 CFM.
- Dreo Dehumidifier 711S
- Better fit
- Dreo Dehumidifier 733S
- Good
Want to track how much energy the appliance uses
Energy and cost tracking in the app are documented for 733S.
- Dreo Dehumidifier 711S
- Good
- Dreo Dehumidifier 733S
- Better fit
Want far fewer trips to the bucket
The tank gap, once normalized, is only about 0.57 liter.
- Dreo Dehumidifier 711S
- Depends
- Dreo Dehumidifier 733S
- Depends
Need a unit that is certified for draining uphill
No internal lift pump comes with either listed configuration.
- Dreo Dehumidifier 711S
- Not suitable
- Dreo Dehumidifier 733S
- Not suitable
In practice
Differences you will notice
The larger tank holds roughly half a liter more
711S has about 0.57 liter more tank than 733S.
How we worked this out
2 US gallons ×3.78541 =7.57 liters. 7.57 −7 =0.57 liter, which is about 8.2% above 7 liters.
About 29% is the difference in published airflow
711S is listed 47 CFM higher.
How we worked this out
(210 −163) ÷163 ×100 =28.8%. A matching gain in drying speed is not implied.
The federal-test figure is not seventy-three pints
About 22.1 pints per day is the federal-test record for the 733S.
How we worked this out
The exact DR-HDH003S ENERGY STAR record keeps standardized capacity apart from the warmer, more humid headline conditions.
Option A
Dreo, DR-HDH001S
Dehumidifier 711S
This smart dehumidifier dries quickly, is packed with features and has a two-gallon tank and strong airflow.
- Best for
- Large living areas that call for fast drying and a capable app
Facts we checked
- A two-gallon tank and a 4,500-square-foot maximum room size are what Dreo lists.
- Airflow is published as high as 210 CFM.
- Humidity monitoring, schedules and remote controls come through the Dreo app.
Option B
Dreo, DR-HDH003S
Dehumidifier 733S
A generous seven-liter tank and tuning for quieter medium-room use define this newer compact smart model.
- Best for
- Medium rooms when you care about app control, low noise and tank size together
Facts we checked
- The current ENERGY STAR test result comes to about 22.1 pints per day and 1.75 L/kWh.
- Dreo's specifications give 163 CFM, sound as low as 42 dB and a seven-liter tank.
- R32 refrigerant is used, and Dreo app control is supported.
Spec by spec
Where they really differ
| Spec | Dreo Dehumidifier 711S | Dreo Dehumidifier 733S | In practice |
|---|---|---|---|
| Water reservoir | 2 US gallons, about 7.57 liters | 7 liters, about 1.85 US gallons | After unit conversion, the gap in tank size is modest. |
| Published airflow | 210 CFM | 163 CFM | At the stated maximum, 711S moves more air. |
| Capacity-label caution | Do not infer output from 110-pint headline | About 22.1 pints under current federal test | Headline conditions that are not alike cannot establish a removal ratio. |
| App support | Remote settings and humidity monitoring | Remote settings plus energy/cost tracking | A useful feature for viewing consumption comes with the 733S. |
| Drain planning | Gravity hose orbucket | Gravity hose orbucket | Neither is chosen here to solve an uphill drain. |
Trade-offs
What each pick costs you
With Dreo Dehumidifier 711S
- The humidity reading on the unit itself was several points high in that test.
With Dreo Dehumidifier 733S
- Drainage is by gravity, with no internal lift pump.
Decision guide
How to decide
Dreo 711S makes sense when you want the larger reservoir and higher published airflow in an open damp space. Dreo 733S makes sense when its capacity fits your room and the app's energy tracking appeals to you. Do not buy by the biggest number alone, because the 733S's 73-pint headline is not its current federal-test removal rate.
The tank sizes are closer than the model names imply
The 733S lists seven liters or 1.85 gallons, while Dreo 711S has a two-US-gallon tank of about 7.57 liters. The 711S therefore stores only around 0.57 liter more, about 8%. If your main aim is fewer trips to the sink, a correct continuous drain will do far more than that modest gap between reservoirs. Neither recommendation assumes a lift pump.
Higher airflow does not mean proportionally quicker drying
Published maximums are 210 CFM for 711S and 163 CFM for 733S, a gap of around 29%. Moving air helps bring humid air to the machine, but the compressor's moisture-removal rate, the room conditions and where you place the unit still count. We do not turn the airflow difference into a drying-time claim, and we do not compare headline capacity numbers that were taken under unlike test conditions.
Energy tracking helps only when you read the room as well
Real-time energy and cost tracking is something the 733S adds in its app. It can show you whether a schedule or humidity target changes consumption in your own home. It does not prove the unit is more efficient than 711S. Read measured humidity next to energy use, and keep in mind that cost estimates are only as good as the electricity rate you enter.
What this page can’t tell you
- No direct comparison is made between the 733S standardized rating and the hotter-condition marketing capacity of the 711S.
- The published sound minima do not come from matched whole-room noise tests.
By the numbers
What the data shows
What we found across the dehumidifiers we compare, plus the checked facts behind each finding.
How many fit
Only 2 of the 31 models checked meet every need here: “I want to look at humidity on my phone”, “I'd like to empty the bucket less often”, and “The space I'm drying is a medium room or finished basement”.
2 models fit, out of 31 checkedShow the facts and the math
How we countedThe count uses each product's current fit ratings for “I want to look at humidity on my phone”, “I'd like to empty the bucket less often”, and “The space I'm drying is a medium room or finished basement”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Dreo Dehumidifier 711S |
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| Dreo Dehumidifier 733S |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Dreo Dehumidifier 711S
A bit more water storage appeals to you
See price & reviews on AmazonDreo Dehumidifier 733S
You want energy and cost tracking in the app
See price & reviews on AmazonEach link opens in a new tab.
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