Energy savings are in the air. Retrofit your AHUs with GreenTech EC fans and save up to 50% of energy costs. ebm-papst develops high efficiency EC fans for building air-conditioning systems. They benefit not only new buildings, but also existing systems because retrofits pay for themselves very quickly. To find out how you can reduce operating costs with EC, contact us at: sales@us.ebmpapst.com The past - Inefficient fans with belt drive and external control electronics. The future - Highly efficient FanGrid with GreenTech EC fans.