Performed diagnostics on the upstairs system. I found that the upstairs system has a furnace that is over 20 years old and is poor condition. The Upstairs AC condenser is over 20 years old and has a refrigerant leak. The system runs on obsolete refrigerant (r22 refrigerant). HVAC system needs to be replaced. The AC system has failed and maybe a water hazard to the home. The homeowner has setup a time with an install supervisor to get an estimate to replace the system. Mainfloor system: the drain line is clogged and I could not clear it with compressed nitrogen. The system need a new drain line. The furnace and outdoor unit are also from 2003 and needs to be replaced or atleast have the drain line replaced and have flood protection installed so further diagnostics can be performed. Customer didn’t want repairs done due to the age of the system and the amount of money already spent on the units.