Returned to home due to concerns that the unit was not cooling properly. Found the unit to be cooling but there was a wrong setting on the new zone board. I was able to immediately correct this issue. Our clients had mentioned that when we replaced the air handler that we had not followed up regarding the refrigerant charge on the system. While cooling I measured the refrigerant charge and ensured it was within manufacturer specifications. The systems is cooling properly and has already dropped 3º on the thermostats.