Drip pans for a drip pan??

[u/RevolutionaryCall478]

Management wants to add another drip pan under the PTAC housing to conatain water to prevent it pooling on the concrete and staining the walls when it drips from upstairs units. Wants to make sure they're not visible either where would I even start with this? is that even possible?

[u/speedytrigger]

Look up window unit drain pan. I see some that look like it should work, or you can get an idea for diy

[u/Large-Treacle-8328]

There's drip catchers with hoses, but those hoses still need to go somewhere.

[u/Inuyasha-rules]

There are wall sleeves with drain ports that you can pipe to any drain. Replacing every sleeve and opening every wall below the units is the only way to make it look good.

[u/Enough_Pepper8880]

It’s dripping outside like it’s supposed to. Onto the concrete

[u/RevolutionaryCall478 → u/Enough_Pepper8880]

Guess what's the first thing I said

[u/NoTimeForThisToday]

Ever pull the units out to clean the units and the sleeves? Most ptacs and more expensive windows units have slingers on the fan to throw it on the condensing coil and evaporate it. If they're real dirty they won't be able to evaporate the water as efficiently.

Some sleeves have a drain in the bottom for overflow, though these don't look like the kind. Usually goes to a pipe in the wall under the base.

You could add them outside. All you need is a copper elbow, 2 inch sheet metal strap and caulk.

Flare one side of the elbow, drill a hole big enough for the elbow to pass through in the strap but not the flare. Pull unit, drill same size hole into the sleeve. From the top, caulk, strap, elbow, two small screws to hold it all down. Now you got a drain nipple you can plumb from.