Performed annual heating maintenance Folsom. Split heat pump system, air handler from 1985, heat pump from 2007. Air handler in attic, with new silver ducts, new drain pan. Tested system, found contactor burning and pitted. Recommend replacement of part. Also hard start kit it low, it’s capacitor should be between 216-240@150. Blower capacitor new. Not very efficient, due to age of system. Lineset insulation is falling apart outside. Filters are due to be changed. 14-25-1 and 20-25-1. Gave unit a good bath, rinsing coils to keep unit running as good as possible. With future repairs coming in around 500$ want to watch how much money you put into a system of this age. Newer equipment is much more efficient.