Can someone tell me where the dampers are and how to operate them to balance the ait upstairs and downstairs.
here is no air comming out of the upstairs receivers (even if I fully block the downstairs ones with duct tape) which means there must be dampers in the duct work in the atic, but I dont know wher they are or how o operate them.
Please help before I have to call a heating and air company (and for them to laugh at me while cashing their check) to show me.