Completed heating tune ups for both systems, customer mentioned thermostat for garage unit wouldn’t shut off after satisfying temperature for heating, noticed the tech settings had it set to gas heat on an air handler & had a schedule as well. Swapped it over to electric heat & removed schedule & system cycled on & off as temperature was met. Noticed on hallway unit coil seemed to have oil looking stains inside evaporator coil mentioned it to customer & it’d be something to keep an eye on for next spring. Other than that everything checked out good on heating side. No other issues to report. Placed yard sign & filled comfort survey.