Installed new 3-ton Carrier heat pump system. Installed new Ecobee Pro thermostat. Rebuilt and insulated condensate drain line. Added SS2 safety float switch. Cleared drain line with CO2 and ran three Gallons of water to ensure proper operation. That was then followed by Viper drain treatment. Installed new filter dryer, pressure tested with dry nitrogen and pulled a vacuum on the copper line set. Replaced the condenser pad. Replaced the whip going to the breaker panel and ran the low voltage in Seal-Tite. Built a transition to existing supply plenum and sealed with mastic airlock. Put down a new plywood overlay. Installed new filter base for easier filter change outs. Cut out and installed a new 24x12 stamp face grille under the system. Charged system to factory spec and performed a benchmark. The system is working properly at time of departure.