In the world of commercial HVAC-R systems, energy efficiency is paramount – whether your goal is to satisfy industry-mandated efficiency ratings or win customers by saving them money on their electric bill. Overall unit/system efficiency is what end users are after, but if you’re an OEM of commercial RTUs, AHUs, etc., and don’t have a deep understanding of how subcomponents - especially coils - impact unit efficiency, you could be costing your customers money – a lot of money.
Based on the experiment outlined in this article, poor coil design can lead to more than a 100% increase in annual fan electricity usage per coil per year.