When you think of the number one industry leader of zoning. There is only one and that is Arzel. With 40 years of experence leading the way manufactoring there own product. That is why they have a Lifetime Warranty on there control panels.
The dampers use a medical grade pump to open and close the dampers when called to do so by the different zones. It is a quiet running system with no motors to wear out. It is the only zoning damper with a Lifttime Warranty.