Vents on roof,

Specific Inspection Topics Inspecting HVAC Systems
1

Do you think the steel vent (water heater) is too close to the one PVC vent for 90+ furnace?

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2

If either one of them is the combustion air intake , it is to close . And I believe they should extend higher above the roof . :D:D:D

3

Ditto, Allen, Ditto.