flcruising wrote:Enlarging the crossover may help, but try closing a couple 3 or 4 vents on the side with the good flow and see if it helps the side with the poor flow. If so, you probably have a balance issue, if not, something is blocked or disconnected on the other side.
Beside changing out some vents and ducts (I have an accessible attic), I balanced my system by using curved louver vent covers instead of the stamped steel restrictive ones. But then again, my home has ceiling vents so I'm not sure what the choices are if you have floor vents.
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