If you are researching heating and cooling companies in Central PA, you may have come across the phrase NATE Certified and wondered what it actually means. Is it just another industry buzzword? Does it even matter? And more importantly, does it make a difference when someone is working on your furnace, boiler, heat pump, or air conditioner? The short answer is yes. When a technician is NATE Certified, it means they have taken the extra step to prove their knowledge, their tro