Originally Posted by
bampilot06
The little louvers is all we have. Our house isn’t zoned. We plan on getting the electro dampers next year which will “mimic” a zone system.
In your attic there should be dampers in-line with the ducts as they exit the air handler. Those are what need to be adjusted. I'd be surprised if you don't have those. They regulate how much air gets blown through each duct, and allow you to adjust for long versus short runs, etc.