• Here is a link to the full explanation: https://rollitup.org/t/welcome-back-did-you-try-turning-it-off-and-on-again.1104810/

Light leaks from window Ac

STR8QU4D5

Active Member
Hi there folks. Just wondering if anyone has any ideas to help me get rid of the light leak thats coming from the air path on my window AC unit. Haven't been able to think of a appropriate method without blocking the air pathways.
 

Mount

Well-Known Member
Not sure what the setup is, a picture would be nice for those of us challenged at times with picturing what you are asking from the written word. But, first gut reaction would be to fabricate a diverter to direct the airflow but block the light?
 

diamonddav

Well-Known Member
if it has a"vent" button or switch, close it! that allows outside air to mix in , which also would let lite in
 

MaiNiaK420

Well-Known Member
Take off the front of the AC unit (behind the filter). You'll see a bunch of white foam, like a foam cooler. This channels the air to the vent locations. Spray that foam with black spray paint.
Next if you're using the corigated slides on the side of the AC unit. Tape cardboard or something similar over the corigated panels.
This should eliminate any light leaks.
 

Aeroknow

Well-Known Member
Hi there folks. Just wondering if anyone has any ideas to help me get rid of the light leak thats coming from the air path on my window AC unit. Haven't been able to think of a appropriate method without blocking the air pathways.
Very typical problem when using window bangers.
This is what I make for that out of cardboard and foil tape:
image.jpeg image.jpeg
You don't have to foil the whole thing, just the folded in sides;-)
And def don't foil tape the inside lining of the cardboard, that will reflect the light in. But this works.
 

CrocodileStunter

Well-Known Member
I have a big ass 24k btu unit but it's nice cuz it slides out of the casing. I caulkd and spray foamed all kinds of seems in it. You gotta get the shell off and really look at it and plan out the best course of action for your unit. I find that where the copper lines go from the front half to the rear half is a very common spot for light to get through. also take off the front cover and caulk up the seams between the case and the unit. and ya might as well clean it all out real good when you're doing all this.
 

MaiNiaK420

Well-Known Member
You must be one of those guys that tries to put all the paint on at once. Which leads to runs or in this case will melt the foam.
But applied properly it doesnt.

 
Last edited:

STR8QU4D5

Active Member
Very typical problem when using window bangers.
This is what I make for that out of cardboard and foil tape:
View attachment 3674504 View attachment 3674505
You don't have to foil the whole thing, just the folded in sides;-)
And def don't foil tape the inside lining of the cardboard, that will reflect the light in. But this works.
Thank you, I thought of this, but couldn't really put it together in my mind, but now your photos really help me get the right idea.
 
Top