Upon arrival tested operation on why heat is continuously running. Found heat wire in W instead of a W2 this caused the heat issue moved over wire, tested operation checked (1) 16x20x4 filter system is operating properly at this time. DCM1 service 1 of 2 Heat completed.
Replaced thermostat with T6 WiFi, tested system in Heat and AC.
Removed old equipment, installed new air handler and heat pump, new supply plenum, new return plenum with a 16x20x4 filter. Installed a coil safety switch, electrical whip, new thermostat, and a new composite pad for the outdoor unit. Reconnected drain line, high voltage, low voltage, reconnected all the duct work. Tested system operations in heating and cooling. Set proper charge.