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UN0335 109K Views
Apr 1, 2025 5:02 PM

Costco In-Warehouse: Midea U 12,000 BTU Smart Inverter Window Air Conditioner

$280

$380

26% off
(Availability May Vary)at Costco Wholesale
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Deal Details
Costco Wholesale [Deal Reference] has Midea U 12,000 BTU Smart Inverter Window Air Conditioner Unit w/ MShield (White; MAW12AV1QWT-C) on sale for $279.99 valid for in-warehouse purchase for Costco Members only.

Alternatively, if you wish to purchase this unit online, it is available for $299.99. Shipping is free.

Thanks to community member UN0335 for finding this deal

Note, must login to your Costco account w/ an active membership to purchase.

About the Product
  • U-Shaped Groove/Drop-In Install Design
  • 12,000 BTU/32 dBA/1140W
  • 4-Way Air Direction/
  • 5 Cool Setting/4 Fan Speed
  • 550 Sq. Ft. Maximum Coverage Area
  • Energy Star Certified
  • MShieled Air Ionizer Technology
  • Smart Control w/ SmartHome App

Editor's Notes

Written by Discombobulated | Staff
  • About the Deal
    • Product is available for in-warehouse purchase at the reduced/listed price; maximum of $80 Off/discount
    • Easy installation w/ snap in bracket; recommended for areas/spaces up to 550 sq. ft.
    • You may open your window to enjoy fresh air even w/ your AC installed
    • Product Item #2677429 for reference
    • Limit 5 per customer
    • Offer valid through May 4, 2025 or while promotional price/supplies last

Original Post

Written by UN0335
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costco Wholesale [Deal Reference] has Midea U 12,000 BTU Smart Inverter Window Air Conditioner Unit w/ MShield (White; MAW12AV1QWT-C) on sale for $279.99 valid for in-warehouse purchase for Costco Members only.

Alternatively, if you wish to purchase this unit online, it is available for $299.99. Shipping is free.

Thanks to community member UN0335 for finding this deal

Note, must login to your Costco account w/ an active membership to purchase.

About the Product
  • U-Shaped Groove/Drop-In Install Design
  • 12,000 BTU/32 dBA/1140W
  • 4-Way Air Direction/
  • 5 Cool Setting/4 Fan Speed
  • 550 Sq. Ft. Maximum Coverage Area
  • Energy Star Certified
  • MShieled Air Ionizer Technology
  • Smart Control w/ SmartHome App

Editor's Notes

Written by Discombobulated | Staff
  • About the Deal
    • Product is available for in-warehouse purchase at the reduced/listed price; maximum of $80 Off/discount
    • Easy installation w/ snap in bracket; recommended for areas/spaces up to 550 sq. ft.
    • You may open your window to enjoy fresh air even w/ your AC installed
    • Product Item #2677429 for reference
    • Limit 5 per customer
    • Offer valid through May 4, 2025 or while promotional price/supplies last

Original Post

Written by UN0335

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241 Comments

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Apr 2, 2025 12:55 AM
83 Comments
Joined Apr 2024
AmusedThread3052Apr 2, 2025 12:55 AM
83 Comments
Quote from robsnyder22 View quoted comment :
YMMV, I just spray it all down with coil cleaner, blower wheel and all, spray it with a brand new clean water pump up sprayer after 10 minutes and put a fan on it to dry everything out thoroughly. I use mine in Florida continuously. Way easier than disassembling everything. I maintain 4 of them doing this exact technique. I should do a youtube video of me doing mine, but I am sure it could potentially break the unit one day. So far, 12-15 cleanings later, their all going strong, and clean too.BTW: This air conditioner 12k uses nearly the same amount of energy as the 8k and idles down to 95W or so when cooling minimally. The 8K Idled back about the same cooling minimally. The main difference is that the 12K can ramp up to using 780W or so while the 8K maxed out at like 460W.
If I get one it's going on the 2nd floor in a bonus room above the garage, so this method would be quite tricky.
Apr 2, 2025 1:03 AM
4.3K Comments
Joined Apr 2015
SeanD1497Apr 2, 2025 1:03 AM
4.3K Comments
Quote from arla-sd View quoted comment :
The 8k BTU variant is Wirecutter's top pick for a window air conditioner. I have this 12k BTU model, and I rather like it - it's quiet, and it keeps the space at a steady temperature. While installing it properly is annoying, the upside is that it comes with a mounting bracket and some pretty decent insulation, so it's going to have a much tighter fit than most other window air conditioners.
Seconding all of this.
I got my elderly mom the 8k one last year, and we're both impressed by it. It's very quiet, and she doesn't even realize when it kicks on in the next room. The install wasn't the most straightforward but wasn't what I'd call difficult. I'm confident that it's secure, and yes, it seems to be a better overall fit than most I've seen. I have central air at home now, but if I needed another AC unit there would be no shopping, I'd absolutely just get another one of these, whether the 8k or 12k.

Oh, and I don't remember the details or if this is still available, but it also qualified for an EnergyStar rebate of $50. Might have been a state program here in Ohio but I think it was through First Energy. Worth looking into with the local utility, for anyone buying now.
Last edited by SeanD1497 April 1, 2025 at 06:06 PM.
Apr 2, 2025 1:16 AM
3.3K Comments
Joined Nov 2012
Husk3rPow3rApr 2, 2025 1:16 AM
3.3K Comments
Quote from mroxer View quoted comment :
Have this one, not sure if mine is faulty, but flies gets in through the AC and into my house, took a month to figure out why there are so many flies. Did this happen to anyone?

Gaps are also sealed, literally can see the flies from outside coming out of the AC.
I missed out on the sales last year, but hopeful this year. I thought I saw other reports of bugs getting through it. Didn't seem totally rare
Apr 2, 2025 1:36 AM
266 Comments
Joined Jun 2010
super_fizzzzApr 2, 2025 1:36 AM
266 Comments
It emit a very annoying high frequency noise. Lg dual inverter one I what you need if you want a quiet window AC.
Apr 2, 2025 2:25 AM
710 Comments
Joined Aug 2013
SkyeCApr 2, 2025 2:25 AM
710 Comments

Our community has rated this post as helpful. If you agree, why not thank

No comment on these specific units but if you're having problems with mold on any AC, you should just turn it to fan mode for 20m or so before shutting off.

All AC's work by transferring heat from one side of the unit to the other side, as part of this process the coils on the inside of the room will be ice cold (so they can absorb the heat in the room and move it to the outside) moisture will condense on the cold coils, it will then drip down in the pan and be directed outside, that's why AC's always dribble water on the outside.

If you shut the unit off there will be a lot of moisture, all over the coils and in the pan. That moisture be food for mold in the right climates..

To avoid this, run it on the fan mode before turning it off, this will dry the unit out and avoid the mold issues
7
Apr 2, 2025 2:34 AM
1.1K Comments
Joined Nov 2011
topshelf207Apr 2, 2025 2:34 AM
1.1K Comments
Bought two of the 8k models a few years back in September of that year. Put them away for the winter in October and the following May one of them didnt work.

Home depot was great about taking it back as a return, even though it was months later. I had to get an RMA from Midea though.

I still may buy another one with having experienced that. They are just so damn quiet compared to regular window AC's. But really if you have the space in your breaker panel, the way better option it to just install a mini split heat pump. It's not really that hard for a DIY'er, even with the models that require vacuuming the lines.

(I installed a 24k btu Senville mini split in my garage 3 years ago)
2
Apr 2, 2025 2:45 AM
1K Comments
Joined Sep 2011
kylefifaApr 2, 2025 2:45 AM
1K Comments
Do I need to bring back the air conditioner iwhile requesting price adjustment at counter

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Apr 2, 2025 2:45 AM
3.4K Comments
Joined Jul 2020
ThirstyCruz
Pro
Apr 2, 2025 2:45 AM
3.4K Comments
Quote from Caleo View quoted comment :
Excess humidity (indoor and out) can do it alone, but so can things like turning it off right after cooling aggressively and just leaving it (which often traps more moisture inside than is ideal, especially on the coils). Setting a really low manual fan speed can often cause extra moisture to build up.

They can be made to, since they basically just sit on their sill-based stand, but you'll have to make a good-fitting fill panel to take up the open space.

They can vary quite a lot in real-world use depending how hot it is outside, if it's not too terribly hot they might only use 450-600W on 'max' cooling. That's where I typically saw mine operate. Sometimes up in the 1000W range on a hot 95-100f+ day.
Quite informative. Suppose environment impact as well - city vs suburbs or country? Thanks for the very well rounded responses
Apr 2, 2025 2:52 AM
2.9K Comments
Joined Mar 2009
softriderApr 2, 2025 2:52 AM
2.9K Comments
Quote from Musicaholic8000 View quoted comment :
Read some reviews. People still complain of mold and it's not the easiest to disassemble. Real pain to clean the blower wheel as it's like 2ft long.
https://youtu.be/esPGXI-nVjI?si=LiFYHgfSkE__Ix-4
I haven't installed mine yet as I bought them at the end of last season. But I have purchased a couple of these Frost King coil cleaners which some report work well with this air conditioner to combat the mold growth.

https://www.amazon.com/dp/B007I7KZN0?ref=nb_sb_ss_w_as-reorder_k3_1_13&amp=&crid=27EYV9PFEWTOV&spref... [amazon.com]
2
1
Apr 2, 2025 2:56 AM
3.3K Comments
Joined Dec 2010
radarsApr 2, 2025 2:56 AM
3.3K Comments
Did you sleep well while it was running at night?
Apr 2, 2025 3:05 AM
206 Comments
Joined Jan 2008
gerbilsApr 2, 2025 3:05 AM
206 Comments
I wish inverted U shaped AC's were on sale. I'd like a full view outside...
Apr 2, 2025 3:23 AM
211 Comments
Joined May 2006
Bullet4FunApr 2, 2025 3:23 AM
211 Comments
We have horizontal windows - can I install these on it sides and it would still work efficiently? Or is that a No-No (have not see any option for horizontal windows - and portable ACs are not as efficient).
Apr 2, 2025 3:23 AM
513 Comments
Joined Nov 2009
soldiersinxApr 2, 2025 3:23 AM
513 Comments
Is this the updated model with the drain plug and revised bracket?
Apr 2, 2025 3:39 AM
5.5K Comments
Joined Nov 2007
MBZ321Apr 2, 2025 3:39 AM
5.5K Comments
Quote from kylefifa View quoted comment :
Do I need to bring back the air conditioner iwhile requesting price adjustment at counter
Yes, and also the window and surrounding house it is installed in.
2
1

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Apr 2, 2025 4:07 AM
85 Comments
Joined Mar 2019
MichaelM25Apr 2, 2025 4:07 AM
85 Comments
Quote from justinxip View quoted comment :
This might be a dumb question, but does this mean it will only be available in-warehouse starting 4/9? So if I went that day, I'd have a good chance at grabbing one or two of these units for this price?
No, get now, adjust price later.

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