My downstairs HVAC system is divided into two zones, the main living areas and the master bedroom.
The damper for the main area occasionally does not open.
I notice this because the temperature drops and only a little air comes out of the registers. I imagine that before I notice this the heater has been going for a while trying to heat the place, so I'm sure this is costing me money.
I can go into the attic and hit the damper and it will open and work OK for a while.
Is this something that can be fixed or should I replace the whole thing?
By the way, I don't really like the zoning system because even with both zones active the bypass damper does not fully close.