Learn online, test online, and get certified — all through SkillCat Most people starting out in HVAC share one question before anything else: how much will it cost me to get certified? The EPA 608 certification  is mandatory if you want to handle refrigerants in the United States. It’s not an optional badge — it’s federal law. The problem is, traditional schools and testing centers often charge hundreds of dollars for something every technician needs just to begin working. Th