Condensation Lines/Drip Pans
About a year ago I had an HVAC complany install a new heat pump and return in my attic. My old system was at least 18 years old according to the technician. When the new system was installed, the HVAC company connected it to the existing condensation lines and drip pan which are made of metal rather than PVC. A city inspector came out (Sacramento, CA) and the work passed inspection.
I've since had a leaking problem and extensive water damage. I'm wondering if someone knows if the industry standard is to use existing metal condensation lines and drip pans or would industry standard have required replacing the 18 year old items with new items? Is PVC technically the code? Should the inspection have failed? Any info on this would be helpful. Thanks!