Arrived in Smithville for AC Repair, Upon my arrival I spoke with the customer about their concerns of a blank thermostat. I performed my diagnostics finding the water removal system was backed up causing the auxiliary float switch to trip. While I was inspecting the rest of the indoor system I did find bacterial growth inside the air handler. I spoke with the customer about what I found today and went over repair options. They were not interested in having Solaris installed but would like the system cleaned. Customer chose to go with HK2C and signed the system up for maintenance. With the options the customer chose today I did clear the water removal system and treated it. I then verified system came on and was operating properly in cooling. Moving forward we will need to schedule a return visit for 1 tech 2.5/3 hours to perform the approved repairs. System is in an attic so the morning time would be best for this repair.