Removed old equipment and installed new carrier 2.5 ton heat pump and air handler. Installed new return plenum with 16x20x4 filter, new supply plenum, new zone board, new zone dampers, new emergency drain pan, new pan safety switch, new coil safety switch, 2 new thermostats, new surge protector, and new composite pad for outdoor unit. Reconnected high voltage, low voltage, drain line, supply ducts and all return ducts. Tested system operations, set proper charge.