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AC Line set penetration sealing

DMartin

Registered User
Joined
Jun 28, 2019
Messages
96
Location
Newton Kansas
So I went out to inspect on an AC install. Where the line set penetrates the wall they are using a putty. not too concerning except that it is a VERY malleable type putty (if that is the right word). I am looking at the IMC but can not find a required sealing method for this. can anyone help me out here I am not sure I like it. not sure it would keep out the elements very well. I can touch it with no pressure and mold it.
Any help is appreciated.
 
Dum..dum. used to seal the line set at the exterior wall. I have seen silicone used, comes in colors but I have not made it a point to demand either, just need it sealed. Also have them seal the sides and top of the A/C disconnect to prevent water intrusion.
 
A product like Ideal duct seal and there is also a flashing boot out on the market but I've never seen it used, probably due to additional cost.

You got to keep water, bugs and critters out.
 
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