HVAC Multifloor return system – Should I get grills with dampers to control velocity?
I am designing the new HVAC system for my home. I plan to do a 4 zone system, lennox SLP98UH090XV60C
Attached is a diagram for a visual.
I am getting into the return ductwork. To my understanding it’s good practice is to have a return grill on each floor and it will better circulate air. Also, I separated them into two zones to help with noise transfer between floors.
However, this begs the question, as the air handler blower kicks in, would it suck more from the closer grills and less from the further grills. IE: will I get lots of air movement and suction (and possible noise issues) from the basement and first floor returns, and less so on the 2nd and 3rd floor?
So I was trying to think of a good solution to control this, I was thinking of getting return grills with integrated dampers, to which I could take an Anemometer in front of each grill and adjust them independently until I get a uniform level of velocity.
What do you think? Is this concern valid or should I not bother?
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