As temperatures start to rise and the summer months approach, so do the days of sweltering heat. But there’s hope! The rooftop air conditioning unit (or RACU) offers a potential escape from the worst of the summer heat. It has quickly become one of the most popular solutions for keeping our homes cool during this season. But what exactly is the official business definition of an RACU? And what makes it different from other types of air conditioning units? In this article, we’ll explore the answer to these questions, as well as discuss how to choose the right RACU for your needs. Read on and stay cool this summer!