I saw an online special for a $40 tune-up and decided my 8-year-old a/c unit could use it. They scheduled an appointment for the next day via email, which is great if you're like me and not a phone person. They did my tune up and recommended adding a pound of freon, which I took their advice on. They were done in 20 minutes and I was very pleased that they didn't try to sell me any other services or repairs, knowing that my unit was nearly a decade old and had never been serviced before. I will definitely call them again if I need maintenance.