Lennox Model # 13HPX-036-230-17 Serial # 1914D48036 Customer had no air conditioning. When I arrived the outdoor unit was not running. The contactor was not closing. After replacing the contactor the unit was low on 4-10A customer did not want to do a leak search because he is selling the house. After charging the system I had a 20 degree split and a subcooling of 9 system is operating properly at this point. Customer would like receipt mailed to him.