One unit single stage, 3 zones, verified pressures are good. They recently has someone add refrigerant and leak stopper, also replaced the condenser capacitor. Master bedroom seems to be hot but other area of home are doing fine. Tested damper to the master bedroom section and it opened and closed with demand call. Damper could intermittently be acting up. It was bypassed/ unwired during this visit for testing purposes. Homeowner will continue to monitor temperature across all three zones. The unit is from 2011 and replacing the unit was also spoken about. We will have the office reach out to schedule an in home evaluation for a new unit estimate . The u it is cooling at departure.