Is your AC unit in need of a service call?
No matter how good your air conditioning is it will eventually need an AC service call performed. This is true for all brands, not just one brand particularly. For this reason is why all HVAC companies offer routine service calls. These type of calls allow the heating and air companies to keep an eye on your heating and cooling unit preventing it from completely breaking. Yes, there will be times when you will need them to replace parts but that is just part of normal wear and tear. But, by having an HVAC company keep a close eye on your unit it prevents major damage from occurring.
You can also sign a contract with one of your local AC repair companies and they will usually offer you a warranty for your unit. This means if anything breaks on it while under warranty you do not have to pay any money to fix it.