Installed new 3-ton Carrier gas system. Installed new Ecobee Pro thermostat. Rebuilt and insulated condensate drain line. Replaced secondary drain pan. Installed new filter dryer, pressure tested with dry nitrogen and pulled a vacuum on copper line set. Replaced both the supply and return plenum and sealed with mastic airlock. Added an Aprilaire 210 media filter to return. Charged system to factory spec. System is working properly at time of departure.