Came out to preform diagnostic. Customer stated system wasn’t cooling. Inspected T stats. Cycled to cooling mode. Inspected air handler. Checked over coil, filter, drain line and blower. Drain line had a clean out but no vent after trap. Made corrections to drain line at no charge. Inspected outdoor unit. Upon hooking gauges up found system low on refrigerant. Recommended a leak search customer approved. While preforming leak search found leak at evap coil. Gave options to replace the coil. Customer agreed. Picked up new coil. Installed new coil and filter dryer. Old coil had txv and we converted it to a piston. Pressure tested system as well as pulled a good vacuum. Added 8lb of r410a, Cycled system on and inspected pressures. System is operating properly and cooling at this time. Informed customer of our home care services. Also informed customer of indoor air quality such as high power UV LIGHT, poured water in drain line , draining properly, unit back up and running properly at tim