Thread: HVAC Return Loop

Greetings All,

I'm trying to reach an HVAC tech on this, in the meantime, I'd appreciate your feedback. I did an 11mos. warranty inspection and found this.

A split unit a/c servicing the upstairs has a duct that appears to loop from the supply to the return with no branches. A weighted damper is installed in the middle of the run.

Has anyone seen this?

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Yes, usually part of a zoned system to allow pressure bleed off when part of the system is off.
What is your question?

Originally Posted by Michael Scher

Greetings All,

I'm trying to reach an HVAC tech on this, in the meantime, I'd appreciate your feedback. I did an 11mos. warranty inspection and found this.

A split unit a/c servicing the upstairs has a duct that appears to loop from the supply to the return with no branches. A weighted damper is installed in the middle of the run.

Has anyone seen this?

Love that sediment trap, sideways, not traps, cleanouts or venting and I love the idea of the duct being on top of the unit to keep it warm/cold, and the foam blocks the entire unit is supported by.

Oh yeah, back to the question, As Jim said, I think, ballancing the system