 Make the pros from Penguin your only call for all your home's cooling, heating, plumbing, and electrical needs. Right now, Penguin is offering you a $29 AC tune-up because just like your car needs a routine oil change, your AC needs annual maintenance too. For $29, a professional tech from Penguin will check your cooling system to make sure you're ready for the hot, hot summer ahead. Your AC works hard to keep you and your family cool. While it's built to last for years, in the Arizona heat, the daily wear and tear on your AC takes a toll.