Next what??
No time to even add an edit before ya replied … :shock: You are on this topic like a hobo on a ham sandwich … do ya have one of those new 5G phones with thread reply alerts that also sets off the fire alarm in your house …
All kidding aside, the higher efficiency furnaces can be very sensitive to any restriction in available combustion air when using a pipe for the intake. Some furnaces start shutting down from simple things like marginal intake pipe size not terminated under the same ambient conditions as the exhaust … I have seen it happen.