This option is the least expensive option that would safely address what we were called out for. *teflon treatment for coils and blower. Arrived at clients for cooling and water heater maintenance. I did a thorough evaluation of entire system. Set thermostat to cooling. Checked all electrical components, and inspected ducts and blower wheel. Blower was about 30% restricted. Advised client about our Teflon treatment for coils and blower. Flushed the condensation drain line and made sure no dirt or debris was present. Flushed water heater of sediment and build up. Washed outdoor coil. Checked electrical components outside. System refrigerant pressures were all good. Air scrubber bulb was not working. Will come back for replacement of air scrubber bulb under warranty. Applied Teflon treatment for both outdoor and indoor coil as well as for the blower wheel. System is operational. Job complete.