Upon arrival, I found that the evaporator coil was mostly thawed. I performed a complimentary leak search and found no reason to suspect a leak. I inspected the old filter and the cleanliness of the evaporator coil. I determined that the cause of the freezing was lack of air flow. After further inspection, I noticed the blower was dirty. I made customer aware of build up in the drain lines. He opted to address it himself. I provided options to clean the system from basic to more in depth to system replacement. Customer elected to perform a pull and clean on the evaporator coil, pull and clean the blower wheel, and sign up for the maintenance program. Customer is aware of the risk of performing a pull and clean on the evaporator coil. The evaporator coil is 11 years old with rusting present. When applying chemicals, this could cause a leak to occur in the evaporator coil. Also, the customer is aware of the importance of cleaning to evaporator to help preserve the life of the compressor.
