 You don't stay in any business, let alone the heating and air business, that long unless you're doing something really right. In fact, Air Assurance, they have won several awards for their high standard of service, and they are in the top 1% of Lenox dealers in North America. You probably already started running your AC. Now, before you really have to crank it up, it's probably a smart thing to go ahead and get your AC tune-up scheduled.