I have an Ac repair man that came to my house to do an ac check. He said that I need to have my blower capacitors replaced because they were at a 9 instead of a 10 and that one of my ac units was losing freon. He showed me that one of my units was at 70 and the other one was at 55. He wants to add refrigerant sealant to the system, freon and replace the two blower capacitors for $834. Is that seem right?