For nearly three decades, Northern Air Systems has been an industry leader in manufacturing highest quality mission critical HVAC systems. With thousands of systems in operation and designed to run 24/7/365 continuously – from the coldest to the hottest climate nature can deliver – we are the most reliable choice for Aviation, Mobile Medical, Mobile MRI’s, Television Broadcast, Law Enforcement, Marine, Oil, Gas, Hazardous Locations, Explosion-Proof, Chemical, Military, Homeland Security, and many other custom applications.