Not having had this service before we can only figure that what you did was correct. It certainly made sense to us and the system needed to have the service maintained.
Never had service to a basement before so as far as we are concerned Mike was pleasant, professional and explained what he could tell had been done and what work he would be doing. The house we bought already had this service done and we wanted to make sure it was maintained. We didn't look any further than what was here. We don't know yet if we need any of your other services. We'll keep in mind what you do in case we need something done in the future.