One year later using my Midea U shaped A/C with open drain holes - no mold good air smell
I posted about buying a Midea U shaped A/C last year just as the recall hit. I did not know it at the time but my unit came with removable drain hole plugs. In my earlier post I said I would drill out drainage holes to avoid the mold problem but it was not necessary.
I did sign up for the recall package which consisted of drain filters. As I studied the problem I decided not to use them and let the drain holes remain fully open. The filters (for lack of a better term) are designed to slowly let the water leak out and are to be changed over time as they clog up. I reasoned this is so the Midea can keep the water levels inside the unit to be splashed around the condenser for better efficiency.
I decided that losing some of that efficiency was worth it for two reasons:
One: Where I am installing the A/C I can't easily reach it so changing out the drain filters would be a chore. I want to leave the unit in the window and forget it (I bought an indoor winter cover to keep the cold out and it worked).
Two: I do not want any mold and even some water retention will lead to mold.
One year later, when I started the Midea up again the unit was mold free and had no bad smell, the air blowing in smelled fresh (I had an old fashioned box unit that had no drainage so it can splash on the condenser as well and the smell was bad after a week of running it from standing water in unit and it was properly angled). The amount of water condensation leaking out of the machine is impressive so I am convinced my approach was the correct one.
The Midea blows nice and cold as we go through the heat wave and my view in unobstructed from the window, win-win.