The four HVAC units pictured are 9.5 year old Trane TUE100A948L with rusted evaporators. I have been told the entire furnace needs to be replaced. I am asking, is it typical to last only 9.5 years; I did have a twice-yearly Preventive Maintenance program for the entire 9.5 years; should I get another Brand? The original company is out of business and the HVAC Co that provided Preventive Maintenance reps Honeywell.
The TRANE Condensers are fine, but use R22 which the HVAC Co told me is no longer available. A metering device for R22 vs R410A is available, but was told its not worth the hassle. It was replaced by R410A refrigerant, how long will R410A be available? Should I try to use the HVACs until they break down, I live in Texas?
All advice/comments will be appreciated.