39 year old Joshua Griffin of Griffin Air of Hartfield has been nationally recognized in the heating, ventilation and airconditioning (HVAC) industry by receiving the Top 40 Under 40 award for his business approach and for his You-Tube channel with viewers all across the world. The Top 40 Under 40 award is given annually by News Air Conditioning/Heating/ Refrigeration, a national trade publication and website, to top HVAC companies in the United States owned and operated by people younger than 40.