Elevated Energy Efficiency Greenheck Axial Fans with Vari-Green® motors deliver market-leading energy efficiencies with the most comprehensive electronically commutated motor line in the industry. Vari-Green® motors are available on direct drive sidewall and rooftop fans in single or three phase options up to 10 hp. Vari-Green® distribution center, data center, or manufacturing facility project. Specify with Confidence. Specify Greenheck. ©2023 Greenheck motors are the elevated selection for your next warehouse,