Removed all existing duct work from system. Installed Ecobee lite thermostat. Installed new extended supply plenum. Installed all new buckets and supply registers. Cut in new new supply for the master kitchen, master closet, and the living room. Installed all new flex duct. Sealed all ductwork connections with mastic/hardcast. Cleaned out the return chase underneath the furnace. Cleared primary drain and primed trap with water. Checked condenser capacitor and sprayed JS685. Tested operation of system. Everything is working at completion of work.