What would you say about this vent placement?

[Robert J. OConnor]

P.S. Another reason that spacing of the intake/exhaust for the same furnace is less important in my mind (from an HI's point of view) is that many manufacturers typically sell concentric/flush wall vent termination kits to improve the appearance ... which have very little separation between the intake and exhaust for that furnace.


JMO & 2-Nickels ...

[Robert J. OConnor]

Originally Posted by belliott

I find it amazing that only inches is needed when the intake is like a vacuum

Its a closed system, so it really not a big deal to draw in some exhaust thru the intake ... they are designed that way ...

[Bob Elliott]

Originally Posted by roconnor

P.S. Another reason that spacing of the intake/exhaust for the same furnace is less important in my mind (from an HI's point of view) is that many manufacturers typically sell concentric/flush wall vent termination kits to improve the appearance ... which have very little separation between the intake and exhaust for that furnace.


JMO & 2-Nickels ...

I know and inspected one 2 weeks ago on cat 4.
Do not like that either but I do not make the rules.

All that acidic goodness back at metal.Ymmmm.

[Robert J. OConnor]

Originally Posted by roconnor

Its a closed system, so it really not a big deal to draw in some exhaust thru the intake ... they are designed that way ...

And in fact the manufacturer's give Maximum separation distances between the intake/exhaust for the same furnace (in addition to ensuring they are under the same atmospheric pressure) ...

[Bob Elliott]

Originally Posted by roconnor

And in fact the manufacturer's give Maximum separation distances between the intake/exhaust for the same furnace (in addition to ensuring they are under the same atmospheric pressure) ...

Hope I am not interrupting your private conversation

Having maximum is pointless IMO (my take on it)(or intake) since they also allow there to be no outside pipe for it at all in the first place.

Off to the next one.

[Linas Dapkus]

Originally Posted by belliott

Hope I am not interrupting your private conversation

Having maximum is pointless IMO (my take on it)(or intake) since they also allow there to be no outside pipe for it at all in the first place.

Off to the next one.

Next what??

[Robert J. OConnor]

Originally Posted by belliott

Hope I am not interrupting your private conversation

No time to even add an edit before ya replied ... 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 ...

Originally Posted by belliott

Having maximum is pointless IMO ... since they also allow there to be no outside pipe for it at all in the first place.

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.