I have an older wall mounted Amana air conditioner (MODEL NUMBER: AAC121SRA) as my primary air conditioner up at my summer home and i’ve been running it quite a bit recently due to the hot & humid weather (more than I typically have to run it). I went out to the back of my house where the air conditioner is tonight and I noticed an awful stench coming from the air conditioner that I had not noticed before. Upon further investigation I noticed that there was about half of an inch of standing water inside the air conditioner. I looked for (and found) the drainage hole that was supposed to drain all this standing water, and nothing was blocking the hole.

The drainage hole I found was on the bottom right corner on the front of the machine (facing it when you are outside). Is there another drainage hole that I missed that could be clogged? Or is this normal for there to be some water inside the machine?

Thanks in advance. I can provide pictures of the air conditioner at hand if needed. One thing I cannot do is take the air conditioner off of its mount.

Side view of the air conditioner ^

• Front view (outside) of the air conditioner
  • Orange circle = drainage hole

⟐ Edited December 21, 2023 at 16:36 MST