A local a/c shop comes out and does a routine service on a package unit.
He makes the offer that at two times the fee for doing this he will come out
and do the routine service again twice more during the year.

The question is what is the appropriate number of routine services calls?
The unit is in Florida.

I am not sure if this is a good deal or is it just a way for him to stay
busy during a slack season.

Charlie