DCM1.5: Heat complete, replaced (2) F14x20x1 and cleaned washable filters. System is heating and operating within manufacturer specifications at this time. Refrigerant pressures and temperatures are appropriate for indoor and outdoor weather conditions. Found indoor blower and coils are both dirty, return duct work is not properly sealed and is not insulated in some locations. System does not have a water safety for drain line, if drain line clogs water will spill over primary drain pan. Need to schedule comfort advisor to quote updating duct work. Duct work look’s original to the home, system is 9y/o warranty expired in June 2021. Photos and maintenance checklist attached. Homeowner requested Monday for comfort advisor.