Air inlet and outlet ducts in an HVAC system should not be positioned too close together to avoid recirculation, where rejected air is immediately sucked back into the fresh air intake.

normativepending

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Unidentified Speaker — Fundamentals of HVAC - Basics of HVAC [klggop60vlM]

Evidence Quote

It's obviously Important not to have these two [ducts] too close together Because you just get recirculation So the ideally these would not be positioned so close

Source

Fundamentals of HVAC - Basics of HVACThe Engineering Mindset
Created: 8/13/2026, 4:57:53 AM

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