Originally Posted by journeyman
It looks like the ac line penatrates the wall above tank. I bet you have a crack in the tank and it is getting in your basement. Is that pvc cap glued on or just stuck on. Can you post some more pictures of that whole wall
Thanks for all the replies.
I've considered that, but in my mind I can't wrap my head around the thought that - if there was a leak, why wouldn't it smell it nonstop? When it smells, I take a can of lysol into the basement, spray it around, and the smell goes away.
I'll try to get another pic of the wall, but basically the wall you see extends to the right terminating in a sump pit. The wall turns to the left, where a heat pump unit sits next to the stairs to the main level. You are right, the AC lines exit the wall where you see it, and that point is about a 10" above ground level outside (I sprayed foam in the exit point outside). The wall is offset, and you may be able to see where the blocks leave an exposed area at about head level. I can see the line exiting the house if I stand on a ladder and look thru the blocks. To the left, the wall is higher and also offset. There appears to be a drywalled area that leads to that spot (behind the wall to the left) that I've thought about cutting open and seeing what's back there ...
And yes the cap is glued ... I've tried a sniff test around the cap and smell nothing.