What is the truth about why there’s always a big push to get your air conditioner serviced every year? Is this just self-serving so the service companies can make more money?
I like where you are going with this question and a home inspector is the right person to ask.
It does seem like these service companies are trying to make extra money on service, but in reality, they often lose money on the service call because the fee for the service is low. They make money on repairs when problems are found during a service call, and there are some very good reasons to have the service and make repairs on any problems found.