Old stuff was built before they knew how to engineer something to last til the end of the warranty. I had old AC units on my previous building that were at least 50 years old and kept running. A capacitor here or there and they kept going. Prolly not real efficient but the tenants paid the electric.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.