Replacing our chillers was a big decision that required detailed planning. Donnelly’s BIM capabilities were a real asset, providing us with a failsafe way to accurately plan for the costs and logistics well in advance. We really appreciate Donnelly’s expert project management and attention to the details, including managing the rigging that lifted the 900-ton and 2050-ton chillers from the truck up to the 13th floor through the curtain wall. It’s difficult to do a project of this size without any issues. Donnelly does such a great job. They made the entire process seamless and painless.