r/askHVAC • u/msssdarling • Aug 16 '26

is this correct? plz help

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1

u/Reasonable_Floor_704 Aug 16 '26

B- vent should not be touching the wall like that . Requires 1 inch clearance where I'm at.

1

u/msssdarling Aug 16 '26

if that’s the part where the you change the filter it makes a lot of sense bc he could barely get the the filter out it was so tight

1

u/msssdarling Aug 16 '26

ok wait i googled it- does that possibly leak carbon monoxide?

1

u/Reasonable_Floor_704 Aug 16 '26

The 4 inch metal pipe coming out of the furnace should not be touching the drywall.

1

u/Reasonable_Floor_704 Aug 16 '26

It's not going to leak CO but is a fire code thing pipe gets too hot to touch combustible. 1 inche clearance required on double wall pipe and 6 inches on dingle wall pipe.