For this evaluation I was called out here because the customer's coil was freezing up. I started off my visually inspecting the evaporator coil and then leak searching it, however I was unable to find a definitive spot where the coil was leaking from. I went outside and engaged up where I had a 10 degree subcool which is exactly what the system was calling for and I also had an 11° superheat indicating that the TXV was functioning just fine. I went back inside removed the filter and looked on the underside of the evaporator coil and it was covered in dog hair which is why the coil was freezing up. The filter and dog hair was restricting airflow over the evaporator coil causing the coil to freeze and not cool efficiently. I spoke to the customer about his options as far as taking care of the problem and he wanted to go ahead and have me do a complete coil clean which requires me to take the coil out. I will be returning Saturday July 5th to do the work however today I went ahead and rep