What should be said about this water heater flue and HE furnace being this close together? Thanks
What do you think?
Bad idea of course.
BTW, I’ve never seen a concentric vent installed vertically in my area but it is allowed.
I would recommend the WH vent be elevated above the intake for the HE.
That metal vent appears to be oversized for just a water heater. Was there a combination WH and a 80% furnace before the addition of the 90%. I would be concerned if that size metal vent served a single WH. The flue gas might condense before being discharged. Just my thoughts
Thanks! I did all that.