Outside that is. Most of America is having a very warm summer and you don't want to be caught with your AC down! Good space around the unit here, but it needs hosed down! Luckily there are a lot of things you can do before having to make a costly service call. Make sure you turn off the power, then check your outside unit for debris. (You'll want to remove any you find.) and spray the inside with a garden hose to any dirt in the fins out. Now, don't get over-anxious and make it an excuse to bust out...