Last updated: August 2026
Choosing the best dehumidifier for a second floor depends on more than the advertised square footage. You also need to consider the upstairs layout, actual humidity level, bedroom noise, drainage access, and whether doors normally remain open or closed. The PLUSCENT 32 Pint Dehumidifier suits larger upstairs zones, while the Yaufey JD025Q-80 offers ENERGY STAR-certified operation and flexible drainage. The Midea Cube 20 Pint is the strongest smart-control choice, and the Midea 22 Pint EasyDry is a straightforward option for buyers who prefer simple controls.
Quick Verdict
For app control and a large collection bucket, choose the Midea Cube 20 Pint. For a larger open upstairs area, consider the PLUSCENT or Yaufey, but remember that manufacturer coverage claims depend on temperature, humidity, and airflow. Choose the Midea 22 Pint EasyDry when you want uncomplicated controls and easy room-to-room movement.
Quick Comparison
| Dehumidifier | Best For | Capacity Note | Standout Feature | Amazon |
|---|---|---|---|---|
| PLUSCENT PD10 | Larger upstairs zones and bedrooms | Marketed at up to 32 pints per day under hot, highly humid conditions | Quiet operation and three modes | Check Details |
| Yaufey JD025Q-80 | Open upstairs layouts with steady moisture | 24.93 pints per day under standardized ENERGY STAR conditions | ENERGY STAR certification and included drain hose | Check Details |
| Midea Cube 20 Pint | Smart control and less frequent bucket emptying | 20 pints per day; rated by Midea for spaces up to 1,500 sq. ft. | App control and lift-and-twist design | Check Details |
| Midea 22 Pint EasyDry | Simple operation and room-to-room mobility | 22 pints per day; rated by Midea for spaces up to 1,500 sq. ft. | Straightforward controls, timer, and wheels | Check Details |
Important: Advertised coverage is a general guide, not a guarantee. A dehumidifier may serve an open upstairs landing and nearby rooms more effectively than several bedrooms with closed doors.
PLUSCENT 32 Pint Dehumidifier for Home
Best Quiet Large-Space Pick
The PLUSCENT PD10 is designed for buyers who need more moisture-removal ability than a miniature thermoelectric unit can provide. The manufacturer markets it for spaces up to 2,500 sq. ft. and states that it can remove up to 32 pints per day under approximately 95°F and 90% relative humidity. Those are demanding test conditions, so everyday collection in a cooler second-floor bedroom or hallway will normally vary.
Its three operating modes include standard dehumidification, continuous operation, and a laundry-drying mode. Adjustable humidity control, automatic defrost, a 24-hour timer, a child lock, and a washable filter make it suitable for regular household use. The listing also states an operating range of approximately 39–42 dB, which may be useful in bedrooms or home offices.
The included hose supports gravity drainage. This means the hose must slope downward toward a suitable drain. The unit does not pump water upward to a sink or drain located above it.
Best For: Larger upstairs bedrooms, open landings, living areas, or buyers who prioritize quieter compressor operation.
Why You’ll Like It:
- Three operating modes provide more control over everyday humidity and laundry moisture.
- The stated 39–42 dB operating range is relatively bedroom-friendly for a compressor model.
- A timer, child lock, automatic defrost, and continuous-drain connection support convenient operation.
Consider Before Buying:
- The 32-pint figure is a maximum measured under hot, very humid conditions rather than a guaranteed household collection rate.
- The 2-liter tank may need frequent emptying when continuous drainage is unavailable.
- Gravity drainage requires a lower drain and a continuously downward-sloping hose.
Yaufey JD025Q-80 ENERGY STAR Dehumidifier
Best for Steady Upstairs Moisture
The Yaufey JD025Q-80 is an ENERGY STAR-certified portable dehumidifier with adjustable humidity control, multiple operating modes, three fan speeds, automatic shutoff, automatic defrost, a washable filter, and an included 3.28-foot gravity drain hose.
Its capacity requires careful explanation. The product is marketed as an “80-pint” model based on performance in approximately 95°F and 90% relative humidity. Under standardized ENERGY STAR test conditions, model JD025Q-80 is rated at 24.93 pints per day. This standardized figure is more useful when comparing it with other current portable dehumidifiers.
The manufacturer advertises coverage up to 5,000 sq. ft., but buyers should not choose it by square footage alone. An open, moderately damp second floor is easier to manage than the same-sized area divided into closed bedrooms or affected by an active roof, plumbing, or bathroom leak.
Best For: Open upstairs layouts, persistent seasonal humidity, and households that can use continuous gravity drainage.
Why You’ll Like It:
- ENERGY STAR certification provides a standardized measure of energy-efficient operation.
- Adjustable humidity settings and multiple modes make it adaptable to bedrooms, hallways, and living areas.
- The included hose allows hands-off drainage when a suitable lower drain is available.
Consider Before Buying:
- The “80-pint” marketing number should not be compared directly with current DOE or ENERGY STAR pint ratings.
- The 1.06-gallon bucket can still fill quickly during very humid weather.
- Its drainage system relies on gravity and does not lift water to a higher drain.
Midea Cube 20 Pint Dehumidifier with Smart Control
Best Smart-Control Pick
The Midea Cube MAD20S1QWT removes up to 20 pints of moisture per day and is rated by Midea for spaces up to 1,500 sq. ft. It is particularly appealing when you want to monitor or adjust your second-floor humidity without repeatedly walking upstairs.
The SmartHome app and compatible voice-assistant controls support remote adjustments. Its lift-and-twist design allows the compressor section to nest inside the bucket for storage or extend upward during use. The 3.2-gallon removable bucket also reduces how often it must be emptied compared with many conventional 20-pint models.
You can connect the included hose for continuous gravity drainage or position the upper section above a suitable drain. Automatic restart, automatic defrost, adjustable humidity control, wheels, and a washable filter add everyday convenience.
Best For: Smart-home users, spaces up to 1,500 sq. ft., and buyers who want a larger bucket.
Why You’ll Like It:
- App and voice-assistant controls allow remote humidity adjustments.
- The large removable bucket can extend the time between emptying trips.
- The nesting design makes the unit shorter and easier to store when not in use.
Consider Before Buying:
- At approximately 33 pounds, it is not as light as its compact appearance may suggest.
- The large bucket can become heavy and awkward when filled near capacity.
- Wi-Fi setup adds complexity for buyers who only want basic manual controls.
Midea 22 Pint EasyDry Dehumidifier
Best Simple-Control Pick
The linked Midea MAD22C1AWS is a 22-pint EasyDry dehumidifier designed for spaces up to 1,500 sq. ft. Unlike the Midea Cube, this model does not include smart app control. That makes it a better match for buyers who prefer a familiar digital control panel without Wi-Fi setup.
It includes adjustable humidity control, a programmable timer, two fan speeds, automatic restart, automatic defrost, a reusable filter, and four wheels for moving it between an upstairs bedroom, hallway, or office. A continuous-drain connection is available, although a hose may need to be purchased separately.
The 0.8-gallon tank is smaller than the Midea Cube’s bucket, so manual emptying may be more frequent during humid weather. Continuous gravity drainage is therefore worth considering when the upstairs layout provides a safe lower drain.
Best For: Buyers who want simple controls, room-to-room mobility, and dependable compressor dehumidification without smart-home features.
Why You’ll Like It:
- Straightforward controls avoid app pairing and account setup.
- Four wheels make it easier to reposition on the same floor.
- The timer, auto restart, and automatic defrost support routine household use.
Consider Before Buying:
- This model does not include Wi-Fi, Alexa, or Google Assistant control.
- The 0.8-gallon bucket may require frequent emptying in damp conditions.
- A continuous-drain hose is not always included with the product package.
Factors to Consider When Choosing a Dehumidifier for a Second Floor
An upstairs dehumidifier needs to match the moisture problem, not just the total floor area. Measure the relative humidity with a separate hygrometer, consider how air moves between rooms, and decide how the collected water will be removed before choosing a model.
Measure the Humidity First
Place a hygrometer in the affected upstairs area and observe it over several days. Indoor relative humidity should generally remain below 60%, with approximately 30–50% being a practical target for many homes. A reading that rises after showers, cooking, laundry drying, or rainy weather can help identify when and where the moisture load is highest.
A dehumidifier’s built-in sensor may not exactly match a separate hygrometer because the sensor is located close to the unit’s intake and warm exhaust. Small differences are normal, but a large persistent difference should be investigated.
Floor Layout and Advertised Coverage
Advertised square-foot coverage assumes reasonably good airflow. One dehumidifier placed near a central landing may help an open second floor, but it cannot pull air efficiently through several closed bedroom doors.
For the best whole-floor performance, place the unit in an open central location and keep interior doors open when practical. If privacy or air-conditioning needs require closed doors, individual high-humidity rooms may need separate moisture control or improved HVAC airflow.
Moisture-Removal Capacity
Current portable-dehumidifier capacity is measured in pints removed during 24 hours under standardized conditions. Larger and wetter spaces need greater capacity, but pint ratings from different test conditions should not be compared directly.
ENERGY STAR generally recommends approximately 20–30 pints per day for a slightly or moderately damp space below 2,000 sq. ft. A very damp or wet area may need 25–50 pints or more, depending on its size and moisture load.
Do not use a dehumidifier as a substitute for repairing roof leaks, plumbing leaks, overflowing drain pans, or water entering around windows.
Noise Level Considerations
Noise matters when the dehumidifier will operate near a bedroom, nursery, office, or television. Compressor models produce both fan noise and a low mechanical hum. Published decibel figures are useful for comparison, but the sound may change with fan speed, floor vibration, and room acoustics.
Place the unit on a firm, level surface and avoid allowing it to touch furniture or walls that could amplify vibration. A lower fan setting may be more comfortable overnight, although moisture removal can take longer.
Portability and Design
Wheels are useful for moving a dehumidifier between rooms on the same floor, but they do not make a 30-pound appliance easy to carry upstairs. Check the unit’s weight, handles, and bucket design before buying.
If the dehumidifier will remain upstairs permanently, move it into place before regular operation and avoid carrying it while the bucket contains water. Empty and dry the bucket before relocating the unit.
Tank, Gravity Drain, or Pump
A collection bucket is the simplest option, but it must be emptied regularly. Automatic shutoff prevents normal overflow when the bucket is installed correctly, although it also stops moisture removal until the bucket is emptied.
A gravity drain hose must run continuously downward to a floor drain, shower drain, or another approved location. Avoid loops, upward sections, pinched hose, or routing that could leak onto the lower floor. The products in this article do not use a built-in condensate pump to lift water upward.
Energy Efficiency Ratings
Look for ENERGY STAR certification and compare the Integrated Energy Factor when standardized data is available. This measurement is expressed in liters of water removed per kilowatt-hour. A higher value indicates more moisture removal for the electricity consumed under test conditions.
Correct sizing can also improve practical efficiency. An undersized unit may run continuously without reaching the selected humidity, while an excessively large unit may cost more and occupy unnecessary space.
Maintenance and Airflow
Clean the reusable filter according to the manufacturer’s instructions and keep the air intake and exhaust unobstructed. Dust buildup can reduce airflow, increase noise, and make the appliance work harder.
Check the bucket, hose connection, and drain path regularly. A blocked or poorly sloped hose can stop drainage even when the dehumidifier itself is working correctly.
Before You Buy
- Measure the upstairs humidity with a separate hygrometer.
- Estimate the area that has open airflow rather than counting every closed room.
- Confirm that you can safely empty the bucket or route a downward drain hose.
- Check the product weight if it must be carried upstairs.
- Choose quieter operation for bedrooms and home offices.
- Repair leaks and active water intrusion before relying on a dehumidifier.
Frequently Asked Questions
How Do I Maintain My Dehumidifier Effectively?
Empty and rinse the bucket regularly, clean the reusable filter as directed, and remove dust from the intake and exhaust. Inspect the drain hose for bends, blockage, or algae buildup. Always unplug the unit before cleaning it.
What’s the Ideal Humidity Level for a Second Floor?
A practical indoor target is usually between 30% and 50% relative humidity. Try to keep it below 60%, since persistently higher humidity can support condensation, musty odors, dust mites, and mold growth.
Can One Dehumidifier Handle an Entire Second Floor?
It may work in an open layout with good airflow and interior doors left open. One portable unit is less likely to control several bedrooms that remain closed. Use hygrometers in distant rooms to confirm whether humidity is actually decreasing throughout the floor.
Can Dehumidifiers Help With Mold Prevention?
A dehumidifier can reduce the excess airborne moisture that supports mold growth. It cannot remove established mold or correct roof leaks, plumbing leaks, wet insulation, or other water sources. Existing mold and water damage should be addressed separately.
Should I Use Continuous Drainage Upstairs?
Continuous drainage can reduce maintenance, but only when the hose can run safely downward to an approved drain. Secure the hose and inspect the route for leaks. Do not allow water to drain onto a roof, exterior walkway, or location where it could damage the lower floor.
Are There Energy-Efficient Options Available?
Yes. Look for current ENERGY STAR certification and, when available, compare each model’s Integrated Energy Factor. Actual electricity use will still depend on humidity, temperature, fan speed, selected setting, and operating time.
How Noisy Are These Dehumidifiers During Operation?
Compressor models normally create a steady fan sound and a mild mechanical hum. A quieter setting may be suitable for sleeping, but no compressor dehumidifier is completely silent. Floor vibration and nearby walls can also make a unit sound louder than its published rating.
Why Is My Upstairs Humid Even With Air Conditioning?
Possible causes include short air-conditioner cycles, restricted HVAC airflow, bathroom moisture, an unvented dryer, roof or window leaks, and outdoor air entering through gaps. A dehumidifier may help manage the symptoms, but persistent or localized dampness should be investigated.
Conclusion
The best second-floor dehumidifier is the one that matches your actual moisture load, layout, noise tolerance, and drainage options. The Midea Cube 20 Pint is the most convenient choice for smart control and a large bucket. The PLUSCENT PD10 is appealing for larger upstairs zones where quieter operation is important, while the Yaufey JD025Q-80 provides ENERGY STAR-certified performance and flexible operating modes. The Midea 22 Pint EasyDry is the better fit when you prefer straightforward manual controls.
Use a hygrometer to confirm results after installation, keep indoor humidity below 60% and ideally near 30–50%, and remember that a portable dehumidifier cannot replace repairs for leaks, wet materials, or existing mold.
