Brand new furnace. What would cause this? Never seen anything like this before.
Thanks in advance.
Improper combustion…various potential reasons.
Oh, hi Dave. I took longer to post than I planned.
Thanx y’all. Have a great weekend!
Feel free to expound on my 2 words. (That’s why I beat you! ;-), just 2 words).
I have no time for it.