Installed Carrier furnace and Carrier heat pump for a dual fuel system. Installed Ecobee Pro thermostat. Installed propane conversion kit. Transitioned to existing return plenum. Built new supply plenum and sealed all connections with mastic. Replaced secondary drain pan. Rebuilt and insulated primary and secondary drain lines. Cleared and verified primary drain operation. Installed SS2 and SS3 safety float switches. Ran new low voltage wire to condenser. Pressure tested and pulled a vacuum on the copper line set. Weighed in charge to meet manufacturers specifications.