Competed with ac 3 on 2023,2018 and 2012 all trane gas horizontal in attic. All units cooling at this time of check up. Found compressor from 2012 start up amps very high with a pitted contactot and capacitor showing wear. Ducts ar dusty. Giving the option To do all preventative repairs, minimum repairs or complete upgrade for 2012. Customer not ready to do anything at this time.