Upon arriving to the home, the homeowner explained to me that he has seen two faults on his thermostat. One fault indicated no voltage while the second fault indicator blower issue. Proceeded to go to the air handler, and pulled out the float switch cover and found water inside. This indicated that the float switch had knocked out the unit due to a backed up drain line. Set up the vacuum to flush & vacuum the drain line in which debris was present in the vacuum. Then continued on checking the rest of the system. The drain line is running horizontally until it exits the ceiling near the corner of the garage then exits outside. Equipment is running as intended. Filters have been changed out by homeowner. Left estimates for the homeowner for him and his wife to look over to decide what it is that they would like to do. One estimate is for the preventative maintenance, second estimate is for search protectors and UV light.