I have a question on a service call charge that I would like to have some feedback on from those that are in the business. In early May I had a preventive maintenance check on a system consisting of a 15 year old air handler and a 30 year old condenser. The system was checked, given a clean bill of health with a caveat that the system is old and something can go at any time. I paid $xx for the call.
One month later in the middle of June the condenser started to freeze. Another service call and I was told that the air handler coil was leaking. I can't swear by it but I think that the service tech said that it was probably too cool in early May to stress the system which may have had the leak back then but was not seen at the time.
I am in the process of receiving estimates on replacing the entire system with one of the estimates from the place that did the two service calls. I have not finished receiving and reviewing my estimates and today I received a bill from the place that did the two service calls. The bill is for the second service call in June for $xxx - $xx for charging the system with R22 refrigerant and the rest is for another service call. I absolutely agree that I owe for the R22 charge, but I believe that in May I already paid this place $xx for a preventive maintenance service call and I do not believe that I should be asked to pay for the second call when they already got $xx from me 1 month earlier.
Am I wrong to question the second service call charge or is this just a case that there may not have been a leak in May but 1 month later there was a leak and that's just bad luck for me.