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neomatrixviper 26.2K Views
Jun 7, 2026 12:41 AM

Costco Members: 50-Pint Midea Smart Dehumidifier w/ Built-in Pump

$160

$200

20% off
+ $10 S&Hat Costco Wholesale
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Deal Details
Costco Wholesale has for its Members: 50-Pint Midea Smart Dehumidifier w/ Built-in Pump (MAD50PS1BWT-C) on sale for $159.99. Shipping is $9.99.
  • Note: Non-Members may purchase but are subject to a 5% surcharge.
Thanks to Community Member neomatrixviper for sharing this deal.

About this product:
  • For Spaces up to 4,500 Sq. Ft.
  • Energy Star Certified
  • App and Voice Access Allow for Easy Control from Anywhere via SmartHome App & Voice Assistant Devices
  • Side Access Bucket with Lid to Reduce Spillage when Emptying
  • MShield Air Ionizer Technology Reduces Odors, Smoke, and Gases in the Air.

Editor's Notes

Written by jimmytx | Staff
  • About this Store:
    • Details of Costco's return policy here.
    • If you don't have a Costco Warehouse Membership, you can sign-up here.
  • Additional Information:
    • $40 manufacturer's savings is valid 6/2/26 through 6/21/26. While supplies last. Limit 5 per member.
    • Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.

Original Post

Written by neomatrixviper
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costco Wholesale has for its Members: 50-Pint Midea Smart Dehumidifier w/ Built-in Pump (MAD50PS1BWT-C) on sale for $159.99. Shipping is $9.99.
  • Note: Non-Members may purchase but are subject to a 5% surcharge.
Thanks to Community Member neomatrixviper for sharing this deal.

About this product:
  • For Spaces up to 4,500 Sq. Ft.
  • Energy Star Certified
  • App and Voice Access Allow for Easy Control from Anywhere via SmartHome App & Voice Assistant Devices
  • Side Access Bucket with Lid to Reduce Spillage when Emptying
  • MShield Air Ionizer Technology Reduces Odors, Smoke, and Gases in the Air.

Editor's Notes

Written by jimmytx | Staff
  • About this Store:
    • Details of Costco's return policy here.
    • If you don't have a Costco Warehouse Membership, you can sign-up here.
  • Additional Information:
    • $40 manufacturer's savings is valid 6/2/26 through 6/21/26. While supplies last. Limit 5 per member.
    • Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.

Original Post

Written by neomatrixviper

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Top Comments

Community Reviews

This Midea 50 pint smart dehumidifier is best known for strong moisture removal and long-running basement or bathroom use, with the built in pump making drainage easier than manual dumping. Several long term reports describe two years or more of steady operation, and the phone app is genuinely useful for monitoring humidity. The main drawbacks are noise, noticeable room heat, and a humidity sensor that can run below the setpoint or short cycle. Pump failures and occasional odor or fan issues also appear, so it suits spaces where performance matters more than quiet.

Common Questions (5)

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56 Comments

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Jun 10, 2026 4:10 AM
2.8K Comments
Joined Oct 2012
JaxidianJun 10, 2026 4:10 AM
2.8K Comments
I've had 2 of these from Costco for about 2 years. They're great! Haven't used the app, screw that. I just set the humidity at 5% lower than what I want them to kick in for and all is well. Neither filter really gets dirty in the two rooms I use them in, but I check them every few months anyways.
Jun 10, 2026 4:24 AM
1.3K Comments
Joined Jul 2008
ToeJun 10, 2026 4:24 AM
1.3K Comments
Mine has worked great for the past two years, but the fan is annoyingly loud even on low speed. It also noticeably heats up the room. (Any dehumidifier will do that, but this one seems worse than others I've used.)
Last edited by Toe June 9, 2026 at 09:29 PM.
Jun 10, 2026 5:10 AM
2.4K Comments
Joined Jun 2007
ilovecanadaJun 10, 2026 5:10 AM
2.4K Comments
Got one for my sauna.
Jun 10, 2026 11:41 AM
3.2K Comments
Joined Nov 2005
BrainDocJun 10, 2026 11:41 AM
3.2K Comments
Quote from CoffeeCup20 View quoted comment :
Thanks for the reply. I set mine to 60, and even if it drops to 54, it still runs. One of the main drawbacks for me is that it also generates a lot of heat. By the way, how can I reduce the heat that the machine blows off? I appreciate your help in advance.
You can't reduce the heat. It's part of the physics of pulling the moisture out of the air and dumping the dry air back in the same space. A dehumidifier is essentially an air conditioner with the hot side still inside the room.

You can try running it during cooler parts of a day or ducting the heat elsewhere. If you need things both drier and cooler, an air conditioner is the way to go.
1
Jun 10, 2026 1:43 PM
62 Comments
Joined Sep 2011
Zaber123Jun 10, 2026 1:43 PM
62 Comments
I've had this for about a year. I tried 3 or 4 different humidifiers and this one had the best balance of noise and dehumidification, outperforming models rated for much more moisture removal.

It's still loud and I wouldn't put it near a bedroom. That's true for any of the bigger units.

My only real complaint is the humidity sensor is wildly inaccurate with the unit on. This leads to constant short cycling. I control the unit via an external hygrometer with Home Assistant and it makes the unit perform much better for the electricity it consumes. I'm very happy with it controlled externally, but I would've found a different unit if I had to rely on the internal sensor.
1
Jun 10, 2026 3:12 PM
2.8K Comments
Joined Oct 2012
JaxidianJun 10, 2026 3:12 PM
2.8K Comments
Quote from Zaber123 View quoted comment :
I've had this for about a year. I tried 3 or 4 different humidifiers and this one had the best balance of noise and dehumidification, outperforming models rated for much more moisture removal. It's still loud and I wouldn't put it near a bedroom. That's true for any of the bigger units. My only real complaint is the humidity sensor is wildly inaccurate with the unit on. This leads to constant short cycling. I control the unit via an external hygrometer with Home Assistant and it makes the unit perform much better for the electricity it consumes. I'm very happy with it controlled externally, but I would've found a different unit if I had to rely on the internal sensor.
I think some of the condensation evaporates internally increasing humidity locally prematurely triggering the unit, then the fan blowing quickly normalizes it allowing it to kick off again.

It should only draw large amounts of power when it's truly pulling water out of the air. Sure, the fan takes power too, but the amount of energy consumed is proportional to water being taken out + fan/etc overheads. If you set it to dehumidify forever but there was no water to take out of the air, then you're effectively paying for a slightly inefficient fan (radiators causing extra air resistance that a normal blue fan wouldn't otherwise encounter). For all these reasons, I just set and forget without work about the extra cycling. That works for Lazy Me.
Jun 10, 2026 3:24 PM
160 Comments
Joined Oct 2006
T430Jun 10, 2026 3:24 PM
160 Comments
Dehumidifiers are commonly noisy. Midea makes dehumidifiers for other brands too. Common failure modes include leaking refrigerant (not collecting water) and pump failure. You can always buy a separate condensate pump. Depending on where you intend to place the dehumidifier, consider crawlspace or commercial units like Alorair. Always keep dehumidifier upright during transport.

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Pro
Jun 10, 2026 3:27 PM
13.9K Comments
Joined Apr 2005
TidalWaveOne
Pro
Jun 10, 2026 3:27 PM
13.9K Comments
Quote from BrainDoc View quoted comment :
You can try running it during cooler parts of a day or ducting the heat elsewhere.
But the heated air is the dryer air.
Jun 10, 2026 3:43 PM
62 Comments
Joined Sep 2011
Zaber123Jun 10, 2026 3:43 PM
62 Comments
Quote from Jaxidian View quoted comment :
I think some of the condensation evaporates internally increasing humidity locally prematurely triggering the unit, then the fan blowing quickly normalizes it allowing it to kick off again. It should only draw large amounts of power when it's truly pulling water out of the air. Sure, the fan takes power too, but the amount of energy consumed is proportional to water being taken out + fan/etc overheads. If you set it to dehumidify forever but there was no water to take out of the air, then you're effectively paying for a slightly inefficient fan (radiators causing extra air resistance that a normal blue fan wouldn't otherwise encounter). For all these reasons, I just set and forget without work about the extra cycling. That works for Lazy Me.
It's been a while, but I had an energy monitor on it and am pretty sure I would see the compressor spike on pretty often. Something to keep an eye on if you care.
Jun 10, 2026 4:06 PM
40 Comments
Joined Dec 2021
NavyLeopard5516Jun 10, 2026 4:06 PM
40 Comments
Quote from smintman View quoted comment :
If this thing dies, can I just return it to Costco for a refund ?
Yes thats a key benefit here. This does not fall under the 90 day return policy for larger appliances
Jun 10, 2026 5:09 PM
507 Comments
Joined Feb 2010
PythonzJun 10, 2026 5:09 PM
507 Comments
I got this a few months ago, so I can't comment on durability. It works well in our finished basement, but is very loud even on the quieter setting. We end up turning it off while we're hanging out down there.
Jun 10, 2026 6:13 PM
255 Comments
Joined May 2005
mafiaJun 10, 2026 6:13 PM
255 Comments
I have two from costco. it is cloud, but very effecient. used two years, stil very strong.
Jun 10, 2026 7:16 PM
3.2K Comments
Joined Nov 2005
BrainDocJun 10, 2026 7:16 PM
3.2K Comments
Quote from TidalWaveOne View quoted comment :
But the heated air is the dryer air.
Right -- the heated outlet air is also the dried air. That's why ducting it elsewhere is a possible workaround, but not a great one. With most standalone dehumidifiers, ducting the outlet out of the room also sends away the air you just dehumidified, and the room has to pull in replacement air from somewhere else. If that replacement air is humid outdoor air, it may likely partially defeat the purpose.
It can still make sense in a limited case, such as a bathroom after a shower, where you mainly want to move warm, dry air out of the small space and replace it with relatively drier household air. But that's more like using the dehumidifier as a crude drying/exhaust strategy, not an efficient way to cool and dehumidify the same room.
That's why this is the better solution: "If you need things both drier and cooler, an air conditioner is the way to go."
1
Jun 10, 2026 8:33 PM
43 Comments
Joined Nov 2019
Manuel_WJun 10, 2026 8:33 PM
43 Comments
Quote from Ilovedeals View quoted comment :
A lot of one star reviews. Anyone have or had this?
Have it in our unsealed basement for 2 years and still going. Pretty much set and forget. Fan is definitely loud enough that you don't want it to be in the living space.

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Jun 10, 2026 11:15 PM
982 Comments
Joined Jun 2006
Masked MarvelJun 10, 2026 11:15 PM
982 Comments
There is a hack for relocating the thermo/sensor outside the body of the unit to help with the accuracy of the reading. :/

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