Thread: Return air balance

I inspected a new home the other day where the master bedroom seemed like it was pressurized (I would close the door, and the door would be 'sucked' into the frame).

I had 2 supply vents in the master bedroom, and at least one in the adjoining master bath (maybe two, I can't recall..the master bath was large).

There was a return air vent about 7 feet on the ouside of the master bedroom in a hall area. The unit served master bed and bath, an office, and part of another living area.

To cicumvent this problem (besides more space between the door and floor) I have seen return air sized ductwork run in the attic between living areas, with return air grilles and no filters (looks like a big Slinky when u see it in the attic).

My question is...is there an industry term for the extra ductwork supplying more return air from a living area? I suppose a small return vent could be installed in the master bedroom and vented with the main hallway since they are so close.

Jake

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Jumper duct is the term that comes to mind.
Jim

Or 'bridge duct'.

Or 'balance duct'.

Or ... Phillip, Kevin and the other HVAC guys will likely add more terms.

Thanks. I'll use whichever of these I think of first

"Jumper ducts" or just "jump duct" is what we call them here.

If it were me though I would just add a 12" by 24" return-air-filter-grill in the ceiling and duct it to the return plenum of the system rather than using a passive jumper duct system.