Why HVAC Certified Units Last Longer and Run More Efficently

hvac certification The heating, ventilation, and air conditioning industry generates nearly 71 billion dollars in annual revenue with an annual growth of 4.1% between 2009 and 2014. The industry thrives in large part thanks to the 301,123 employees working for nearly 85,469 United States businesses. With the industry growing at such a rapid rate, and […]