I just installed a used window AC unit through a wall. It was said to have been checked over by an AC repair person and it does appear to be working fine. I understand the issue of drainage and ventilation holes all being well outside the wall and they are on this unit. However, the drain hole in the bottom tray of the pull out section is near the center overall (there is an open bottom to the outer cover/sleeve), and is not at the lowest portion of the tray even if the tray were level. As a result, the condensate is collecting under the fan at the rear of the unit and the fan is actually hitting the water slightly. I don't think leveling the unit more will help much because there is a significant rise the water will have to get over to get to the intended drain. The slope I installed the unit at is about 1/8" drop though the wall opening in a 6" stud wall. The angle appears to be a degree or two.

The unit is a Kenmore 25373185300.

I'm tempted to drill some new drain holes but figured I should ask for help first.

Thanks,

BW

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Originally Posted by bw3700

I just installed a used window AC unit through a wall. It was said to have been checked over by an AC repair person and it does appear to be working fine. I understand the issue of drainage and ventilation holes all being well outside the wall and they are on this unit. However, the drain hole in the bottom tray of the pull out section is near the center overall (there is an open bottom to the outer cover/sleeve), and is not at the lowest portion of the tray even if the tray were level. As a result, the condensate is collecting under the fan at the rear of the unit and the fan is actually hitting the water slightly. I don't think leveling the unit more will help much because there is a significant rise the water will have to get over to get to the intended drain. The slope I installed the unit at is about 1/8" drop though the wall opening in a 6" stud wall. The angle appears to be a degree or two.

The unit is a Kenmore 25373185300.

I'm tempted to drill some new drain holes but figured I should ask for help first.

Thanks,

BW

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Actually the type unit you have is supposed to have the water hit the fan blade blowing out of the rear of the unit so to speak. The fan blade that blows towards the outside usually has a metal hoop around it and the blade is called a slinger blade. It is supposed to splash condensate water on to the hot condenser coil. This does two things. First it helps to dissipate the condenser water so it will not drip as much but the most important part is that the slinger blade tosses the condensate on the hot coil to help cool it down. A rather smart idea from many years ago to help the unit work better.

Thanks for the quick reply. That makes sense: using evaporative cooling twice in one system!
I see the hoop around the fan now that I know to look for it. On with the finish work inside and out.
BW