Donnelly Mechanical Corp.



Corporate building owners, managers and tenants need HVAC and energy experts who are on the job today and prepared for tomorrow. So more of them rely on Donnelly Mechanical. As one of the largest HVAC contractors in the New York City area (and as a certified Woman-Owned Business Enterprise), we are the only hands-on experts in both HVAC and energy. We provide HVAC construction, service and maintenance for large buildings: commercial, medical,institutional and high-end residential. We design integrated, end-to-end mechanical and energy solutions, and respond 24/7/365 to any problems. And through our sustainable energy services group, we provide leading-edge energy consulting and procurement services, saving our clients money through reduced operating expenses, rebates and tax incentives. In fact, we typically save them between 10% and 50% of their energy bill—good news for clients under increased pressure to cut energy costs. We help our clients build greener bottom lines, comply with changing legislation and demonstrate good corporate citizenship. We work with our clients to master the here-and-now and prepare for what’s ahead.


Air Conditioning, Heating, Building Automation, Building Operations, Energy Savings Solutions, Test and Balancing, Commissioning/Retro-commissioning, Data Center AC Service, Design and Installation, Chiller Replacement and Repair, Boiler Service and Replacement, Water Treatment

States Served:

New York


Contact Name:

Dino Mangione

Contact Title:

VP Sales & Marketing

Contact E-mail:


96-59 222 Street
Queen Village, NY 11429