Springtime Air Conditioning Maintenance for a residential customer near Robinson Ridge. Came out on 1 system maintenance Checked pressures checked duct work checked insulation levels cleared drains cleaned outdoor coils checked blades checked electrical connections checked contactors checked Amp draws checked bearings Found Dirty filter needs be replaced. [20x26x5/ part number y6604] Dirty outdoor coils / cleaned during visit. (Check outdoor coil mid to late Aug to see how Dirty it is and if needs be cleaned.) No surge protection No IAQ [air purifier]