Installed Carrier furnace. Installed new extended supply plenum and new return plenum. Installed new collars. Attatched existing ductwork and sealed all connections with mastic. Rebuilt and insulated primary and secondary drain line. Replaced secondary drain pan. Installed SS2 safety switch and cleared drain and verified operation. Installed Ecobee pro thermostat. Installed Carrier condenser and replaced disconnect and whip. Ran low voltage in 1/2 inch seal tite. Weighed in additional charge to meet manufacturer specifications. Everything is working at completion of service.