r/MideaUOwners

When the AC is actively cooling, the humidity comes down. Then it hits the temp, the condenser/compressor turn off and it just blows air, which causes a spike in humidity. How do you stop the fan from going when it’s at temp? I can’t stand manually turning it off every time the temp is reached. Or switch it to dry mode after it’s done cooling.

Has anyone ever purchased more of the adhesive weatherstripping foam that comes with the unit? If so can you let me know which one you get that best matches the factory foam? Thanks!

I bought the Midea 12k BTU from Costco the other day since NYC has been getting hot, and I’ve been letting it run for hours and it’s just blowing coolish air. Nothing that actually makes the room actually colder. Is my unit broken and should I return it or is this a common thing. I am frustrated.

I have it on High and on Cool.

Purchased a used Midea U and only later found out about the recall. Tried to submit for the recall and I get a message that the serial number has been claimed, but I don’t understand how it could be claimed to if the power cord is intact and they didn’t have to send it back?

I'd like to know from anyone who's used their 2026 in the past few months whether the mold problem has been corrected. Thanks!

We bought this unit in 2023, and it's worked great for 3-4 months each season. I did all the usual stuff before storing it last year-- ran the fan, drained the unit, covered it, etc.

I plugged it in and turned it on today, and it's short cycling every few minutes. The unit is on COOL and not auto. The compressor does come on, but then cycles off. The last time it did this, it was bc it was running for days during a very long heatwave/humid spell. It needed to be off for like 12 hours, and it was fine (compressor probably froze). That's not the case this time, bc we just started using it.

Any ideas? I'll try Midea tomorrow for help.

I’m looking to automate the fan to run for 30 min after use to dry the coils and any humidity to avoid mold.

I tied setting up a scene to turn the ac back on in fan mode one once turned off, but seems to be either stuck in a loop or not set properly.

Here’s is what I did:

I tied setting a scene to:

IF

1. AC is turned off

THEN

1. power turn on, mode fan, 100%

2. delay for 30 min

3. turn AC off

That didn’t work and the AC stayed on in fan mode and never turned off.

Perhaps it’s stuck in a loop, since when it actions being tuned off it repeats turning back on?

Need a little help

I purchased a new 12k unit last August, and it started giving me an EH-03 error (issue with interior blower) a couple of days ago. Since it's still under warranty, I contacted Midea, and after a few back-and-forths via email, they told me that it's not serviceable, and since it was purchased at Costco I need to bring it back there. Now, it happens that I live in Manhattan, so bringing it back to Costco is a major pain (I purchased it online and I no longer have the carton). Anyone ever buy one of these at Costco and dealt with a warranty issue?

Looking to soundproof my u shaped 12000 unit. What do you do to do that?

Will be great to know there materials with links…. Looking to kill as much sound coming from the outside as possible.

As the subject. I've got a new Duo and have set it to dehumidifying "dry" mode, fan to auto. Firmware is up to date, and I've power cycled it. There's a hose connected to the drain and into a reservoir.

Now this could be dumb, but I did contact Midea, they said I don't have to have the exhaust vented outside if I'm just dehumidifying. So, temporarily, it's not vented.

The humidity hasn't changed. At all.

Temp indoors is 20C, outside it's only 2C, and the rh indoors is 93%.

Had my 8000 U+ for 2 years and still looks mold free with no repair but decided to get the rebate. Getting what I paid for it which is more than the current sale price of the 12K model on sale at Costco. Not 100% sure of I'll care that it isn't a plus model. Not bad to make some money on a 2 yr old AC.

My room isn't giant but I'm on the top floor of a 3 story building with a flat black tar roof and the 8k kept it cool but did stay on a lot. Thinking the 12 shouldn't be to much overkill and the new air-conditioners don't need to run at full power line the old school ones.

Looking forward to the extra headroom of the bigger model. Going to be in the 90s next week here in Boston while today is 55. Guess I can't wait for the rebate to arrive but I'll just use it for something else.

I had the 10k unit for a few years and it was amazing! Until the mold came…I’m sure the mold was there much longer than I realized but when the recall was announced mine looked like a science project. It was unnerving but I got my money back relatively hassle free.

After a ton of research I came to the conclusion that pretty much all inverter window units will develop mold and require some level of maintenance. Midea U being the quietest of them all, I decided to buy another one. Hopefully this wasn’t a foolish mistake but it’s so damn quiet and works so well.

Looking to poll the hivemind for tips and tricks to prevent mold from growing in the first place.

Should I remove the black drain plug to begin with? What about the blue plug on the outside in the middle closest to the house?? What’s this one about?

Put in one of those dense black air filters on the inside to help reduce dust from entering the unit?

What else?!?!?

Is there a fast and clever way to deep clean the squirrel cage once it's out of the unit? The best method I've found has been to soak it in hot soapy water, then spray it out with a high pressure garden hose, soak again, and then meticulously scrub every single fan blade with a tiny bottle-style brush that's just the right size.

The only problem is that last step, scrubbing the whole cage, while very effective, probably takes me as long as the entire rest of the disassembly and reassembly.

Granted, soaking and spraying got 90% of the gunk out, but there were still black spots stuck on there that only came off with the brush.

What about pressure washing? Has anyone tried that? Any other ideas?

I’m trying to figure out if it’s realistically possible to hook up a Midea Duo 12,000 BTU dual‑hose portable AC to an existing wall vent in an apartment (instead of using the window kit as my window is not sliding window).

The wall vent is a standard circular outlet, and I’m hoping to avoid the bulky window panel setup. Before I start experimenting with adapters, reducers, or DIY seals, I wanted to check:

• Has anyone actually done this successfully?
• What adapter or setup worked for you?
• Any airflow or back‑pressure issues I should watch out for?
• Did it affect cooling performance or noise levels?

Photos, part links, or even “don’t do it, here’s why” stories would be super helpful. Trying to keep things clean, safe, and landlord‑friendly.

Thanks in advance to anyone who’s tried this or has ideas.