AC Service / Maintenance Complaint 5/16/25 unit making humming noise. Found reversing valve coil buzzing. Tightened nut and noise stopped Scheduled prepaid a/c maintenance 6/6/25 Completed cooling maintenance, coil is clean, cleaned drain, replaced filters, pressurized water loops, purged circulation pumps, checked system operation and found no issues, water loops may have a leak, will need to monitor water pressures in the fall and see if we need to investigate further System is cooling at this time