Performed ESA, homeowner informed tech that there was a “wet clothing” coming from return but went away. Tech informed homeowner of “dirty sock syndrome” and stated that could possibly be the culprit. Tech deeper cleaned coil with coil cleaner and informed homeowner that if smell arises again to give us a call. Tech also installed a hard start kit to help combat high start run amps and to protect the compressor. System is cleaned and serviced.