I live in SC and for some reason the through-wall A/C’s we buy keep developing mildew and nasty smells from the profound amount of humidity in the air through Summer. First I tried with a through-wall unit and then w/ a smaller through-window unit. I thought maybe the drain hole to expedite the water out of the unit was plugged so I had some folks come over and clean the unit out but 2 weeks later it just smelled again and I stopped using the unit. So I’ve decided to scrap it and just buy a new unit. Only this time I’d like to over see the whole process from the choice of the unit to the installation and angle that the unit sits at in the space. I’m hoping to be the difference between a smelly unit and a non-smelly unit.
I would be looking for something that can be maintained. I know it’s a tall order, but that’s why I’m here asking questions. The unit that currently resides in the hole is
25 1/4" x 16 1/4". I would need a a minimum 10, 500 BTU A/C preferably a bit more with heat or a heat pump unit. If anyone would be so kind as to recommend a unit or brand I would be most grateful as time is against me to when spring brings the heat. (I don’t use this unit in winter, just a space heater and fresh air from the window if needed). I’m quite picky about filters as well because I have allergies and the louvers that control airflow should be as easily changeable as possible not the angled ovals that you you rotate to change the air direction. The better I am able to maintain this unit, the better the chance I will have to not have the same problem the way I see things. Anyone have any good experiences with brands that I should know about? Please do chime in, thanks.