Performed diagnostic on 20yr trane heat pump, upon arrival customer explained he had a company out during spring and added refrigerant, stated unit is short cycling now, inspected outdoor unit and hooked up gauges, next inspected air handler in basement, blower wheel impacted, checked filter, evap coil heavily rusted and can see signs of oil, checked tstst, cycled to heat mode, checked heat strips amps, upon checking outdoor unit , unit is short cycling every 20sec, suction pulling down to vacuum, explained to customer unit have a failed outdoor txv as well as possible leak dew to oil on evap coil, explained r22 is obsolete as of 1/1/2020, highly recommend install supervisor, customer approved, schedule for today, customer only has aux heat at the moment, spoke with customer about home care as well as indoor air quality