Installed Carrier heat pump system. Installed Ecobee Pro thermostat. Replaced supply plenum and sealed all connections with mastic. Installed new plywood overlay for system. Installed filter base. Rebuilt and insulated primary drain line. Cleared and verified drain operation. Added SS2 safety float switch. Replaced disconnect and whip at the outdoor condenser. Ran low voltage in 1/2-inch Seal-Tite. Installed surge protectors for both indoor and outdoor units. Pressure tested and pulled a vacuum on the copper line set. Weighed in charge to meet manufacturer specifications.