I’m installing an HVAC system and admittedly am pretty new to it. I can’t seem to find any answers online to my question.

Can you have return takeoffs close to each other on the trunk or do you need to abide by the 2’ rule like you would with supply takeoffs?

1 Answer 1


The rule would not apply. The partial vacuum in a return trunk behaves very differently from the pressurized supply trunk.

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