Archives: Featured Projects

Turn-key Air Handler Replacement Real Estate

Donnelly Mechanical was contracted to provide a complete turn-key replacement of two (2) 30-ton air handling units (AHUs), on the 8th floor and 10th Floors respectively.

Hospital Gets New HVAC Installation

Long Island Healthcare HVAC Installation by the Hospital and Healthcare HVAC installation and Maintenance experts, Donnelly Mechanical.

Replacement of Water Cooled System

There were two outdated cooling towers on the roof as well as five 18-year old R22 chillers in the basement of the building that had served beyond their useful life and needed to be replaced.