Main trade-off
Dreo Dehumidifier 711S
WIRED measured sound above 60 dB during hard operation.
Head-to-head
Dreo 711S vs Dreo 733S: 711S has more tank room, 733S’s headline is not its federal-test rate
The short answer
Choose Dreo 711S if you want the larger reservoir and higher published airflow for an open damp space. Choose Dreo 733S if its capacity suits your room and you value the app's energy tracking. The 733S's 73-pint headline is not its current federal-test removal rate, so do not buy by the biggest number alone.
Before you choose
The reasoning and the trade-offs
The larger tank adds roughly half a liter
711S stores about 0.57 liter more than 733S.
What this is based on
2 US gallons ×3.78541 =7.57 liters.7.57 −7 =0.57 liter, about 8.2% above 7 liters.
Main trade-off
Dreo Dehumidifier 733S
The 73-pint headline uses hot, saturated conditions rather than the current federal test.
Dreo Dehumidifier 711S
- Choose it for
- You want a little more water storage
- You want the higher published air-circulation rate
- Main trade-off
- WIRED measured sound above 60 dB during hard operation.
Dreo Dehumidifier 733S
- Choose it for
- You want app-based energy and cost tracking
- A22-pint federal-test class unit suits the moisture load
- Main trade-off
- The 73-pint headline uses hot, saturated conditions rather than the current federal test.
About this comparison
Compare Dreo 711S and 733S with normalized tank volumes, airflow and app tools. Avoid treating their headline pint numbers as a common test.
Winner by situation
Start with what you need it to do
Want the higher published air-circulation rate
711S lists 210 CFM against 163 CFM.
- Dreo Dehumidifier 711S
- Better fit
- Dreo Dehumidifier 733S
- Good
Want to track the appliance's energy use
733S documents energy and cost tracking in its app.
- Dreo Dehumidifier 711S
- Good
- Dreo Dehumidifier 733S
- Better fit
Want dramatically fewer bucket trips
The normalized tank gap is onlyabout 0.57 liter.
- Dreo Dehumidifier 711S
- Depends
- Dreo Dehumidifier 733S
- Depends
Need a unit certified for an uphill drain
Neither listed configuration provides an internal lift pump.
- Dreo Dehumidifier 711S
- Not suitable
- Dreo Dehumidifier 733S
- Not suitable
What matters in practice
The differences that matter
The larger tank adds roughly half a liter
711S stores about 0.57 liter more than 733S.
How we reached this conclusion
2 US gallons ×3.78541 =7.57 liters.7.57 −7 =0.57 liter, about 8.2% above 7 liters.
Published airflow differs by about 29%
711S lists 47 CFM more.
How we reached this conclusion
(210 −163) ÷163 ×100 =28.8%. No matching drying-speed gain is implied.
Seventy-three pints is not the federal-test figure
The 733S federal-test record is about 22.1 pints per day.
How we reached this conclusion
Exact DR-HDH003S ENERGY STAR record separates standardized capacity from warmer, more humid headline conditions.
Choice A
Dreo, DR-HDH001S
Dehumidifier 711S
A fast, feature-rich smart dehumidifier with a two-gallon tank and substantial airflow.
- Best matched use
- Large living areas where fast drying and a capable app matter
Checked facts
- Dreo lists a 4,500-square-foot maximum room size and a two-gallon tank.
- Published airflow reaches 210 CFM.
- The Dreo app provides humidity monitoring, schedules and remote controls.
Choice B
Dreo, DR-HDH003S
Dehumidifier 733S
A newer compact smart model tuned for quieter medium-room use and a generous seven-liter tank.
- Best matched use
- Medium rooms where app control, low noise and tank size all matter
Checked facts
- The current ENERGY STAR test result is about 22.1 pints per day and 1.75 L/kWh.
- Dreo specifies a seven-liter tank, 163 CFM and sound as low as 42 dB.
- It uses R32 refrigerant and supports Dreo app control.
Meaningful differences
What changes the fit
| What changes | Dreo Dehumidifier 711S | Dreo Dehumidifier 733S | Why it matters |
|---|---|---|---|
| Water reservoir | 2 US gallons, about 7.57 liters | 7 liters, about 1.85 US gallons | The tank-size gap is modest after unit conversion. |
| Published airflow | 210 CFM | 163 CFM | 711S circulates more air at the stated maximum. |
| Capacity-label caution | Do not infer output from 110-pint headline | About 22.1 pints under current federal test | Unlike headline conditions cannot establish a removal ratio. |
| App support | Remote settings and humidity monitoring | Remote settings plus energy/cost tracking | 733S offers a useful consumption-viewing feature. |
| Drain planning | Gravity hose orbucket | Gravity hose orbucket | Neither is selected here as an uphill-drain solution. |
What you give up
Every choice has a cost
If you choose Dreo Dehumidifier 711S
- Its onboard humidity reading ran several points high in that test.
If you choose Dreo Dehumidifier 733S
- It has gravity drainage but no internal lift pump.
What matters in practice
How to make the call
The reservoirs are much closer than the names suggest
Dreo 711S has a two-US-gallon tank, about 7.57 liters. The 733S lists seven liters or 1.85 gallons. That is only around 0.57 liter extra storage for 711S, about 8%. If you mainly want fewer trips to the sink, a correct continuous drain will make a much bigger difference than that modest reservoir gap. Neither recommendation assumes a lift pump.
More airflow does not prove proportionally faster drying
The published maximums are 210 CFM for 711S and 163 CFM for 733S, around 29% apart. Air circulation helps expose humid air to the machine, but the compressor's moisture-removal rate, the room conditions and placement still matter. We do not convert the airflow difference into a drying-time claim or compare headline capacity numbers taken under unlike test conditions.
Energy tracking is useful only if you interpret the room too
The 733S adds real-time energy and cost tracking in its app. That can help you see whether a schedule or humidity target changes consumption in your own home. It does not prove the unit is more efficient than 711S. Look at measured humidity alongside energy use, and remember that cost estimates depend on entering the correct electricity rate.
What this comparison cannot tell you
- The 733S standardized rating is not directly compared with 711S's hotter-condition marketing capacity.
- Published sound minima are not matched whole-room noise measurements.
What the facts say
What the comparison shows
Useful conclusions from the current dehumidifiers comparison, followed by the checked facts used to reach them.
Compared set
Only 2 of 31 models checked match every need here: “I want to check humidity from my phone”, “I want fewer trips to empty the bucket”, and “I am drying a medium room or finished basement”.
2 matching models from 31 checkedSee the checked facts and calculation notes
Match countThe count uses the current product-to-need assignments for “I want to check humidity from my phone”, “I want fewer trips to empty the bucket”, and “I am drying a medium room or finished basement”. A need with no documented match does not count.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| Dreo Dehumidifier 711S |
|
| |
| Dreo Dehumidifier 733S |
|
|
Ready to choose?
Check the price. Read the owner reviews.
Open either model on Amazon to check the current price, customer reviews and delivery options.
Dreo Dehumidifier 711S
You want a little more water storage
See price & reviews on AmazonDreo Dehumidifier 733S
You want app-based energy and cost tracking
See price & reviews on AmazonLinks open in a new tab.