Alex D - arrived and spoke with customer about his concerns with the unit 1.unit was very loud yesterday morning 2. Filter door stuck on Checked outdoor charge in heating made sure unit was operating as it should be Found the loud noise to be coming from the bedroom on the exact opposite side of the wall from the unit customer is hearing the refrigerant lines in the wall Got filter door to properly open and close Set dip switch at outdoor unit to defrost every 90 minutes instead of 30