Removed old equipment and installed new Rheem 2 ton 454-b Rheem heat pump and air handler. Installed new return plenum with 16x20x1 filter, new emergency drain pan, new pan safety switch, new coil safety switch, new condensation pump, new thermostat and new composite pad for outdoor unit. Reconnected high voltage, low voltage, drain line, and supply plenum. Tested system operations, set refrigerant charge.