When you are talking about high-efficiency furnaces, as you know, these things are exhausting combusted air when in operation.
And when you are talking about weird furnace vent installations, and when dealing with new construction, I see things that bother me and these things are exhausting.
This is the exhaust line for a high-efficiency condensing gas furnace.
Due to the size of the chase housing the return vent, and where they put the furnace air intake line and main plumbing drain, there was no room to configure the furnace's exhaust.
So they drilled one hole, looked at it and determined it was too close to the corner.
Then they drilled another hole and decided to use it for the furnace vent.
From my perspective, there are two problems with this location.
1. It is actually sticking out further than the stud wall. So drywall will have to bend around it. This will put continual stress on this tubing. It is PVC and not meant to handle such pressure.
2. This will be touching the drywall all the way up the wall! This is a hallway. Who is to say a heavy object - picture frame or mirror - won't one day have a hanger nailed onto this wall. Is it possible to put a nail into or through this exhaust vent?
ISN'T GAS FURNACE EXHAUST DANGEROUS?
To me this is a big duh, but apparently not to anyone else, including the County who signed off on this house, giving permission for drywall installation.
Maybe it isn't possible to stick a nail into this tubing, I don't know, but pressure over time might break a seal somewhere and I don't think I would want to tickle this sleeping tiger.
My recommendation: how often do we hear to be sure to have a private home inspection EVEN IF there are other "inspections" along the construction way and a supervisor there "supervising" the construction every day? Don't buy that! And don't buy a house without hiring your own home inspector. Home inspectors have a different perspective.
Jay Markanich Real Estate Inspections, LLC
Based in Bristow, serving all of Northern Virginia.
Office (703) 330-6388 Cell (703) 585-7560