East Hempfield Township-based Warfel Construction Co. last week broke ground on a $5.9 million office and manufacturing expansion for Aerzen USA in Chester County.
The 22,000-square-foot expansion will allow Aerzen USA, a maker of air and gas moving equipment, blowers, compressors and vacuum pumps, to expand services and product lines.
Aerzen USA is a subsidiary of a German machinery manufacturer.
The addition, which is expected to be done by next July, will feature a geothermal well field to support heating, ventilation and air-conditioning systems. Solar panels also will be placed on the roof of the expanded manufacturing building.
Warfel finished last year with $131.1 million in revenue, according to Business Journal records. That was up from $109.6 million in 2014.
