Manufacturer Update
ECM Fan Retrofit with Q-PAC
ECM Motors and Fans have provided a practical solution to most AHU fan retrofits. There are a lot of good reasons to consider them in your HVAC designs.

Product Update
ECM Fan Array vs. Fan Wall Type Designs?
We are using more and more ECM Motors and Fans in our applications. Here’s a look at why they make sense over traditional fan wall applications.  

Related Blogpost
Project Snapshot: UMass Data Center
Check out this project at the UMass Data Center which features two ECM fan array units. Each array consists of twelve 7.5 HP ECMs, with backwards curved fans, that deliver 83,000 CFM