About Donnelly Mechanical
Donnelly Mechanical stands as New York City's premier commercial HVAC provider, boasting over three decades of dedicated service and a reputation for trusted, proven solutions. Since its inception in 1989, the company has grown to encompass a team of over 200 skilled employees, all committed to delivering innovative HVAC services, maintenance, and construction across the bustling metropolis. Donnelly Mechanical's mission is to ensure optimal comfort, maximize system efficiency, enhance indoor air quality, and guarantee the reliability of HVAC systems for NYC's most prominent commercial organizations. Their extensive experience allows them to tackle complex projects with professionalism and ease, providing tailored solutions that address the unique challenges of the urban environment. By prioritizing client needs and embracing cutting-edge technology, Donnelly Mechanical has established itself as an indispensable partner for businesses seeking superior HVAC performance and a healthier indoor environment.
Key Services
- Commercial HVAC Preventive Maintenance
- 24/7 Emergency Commercial HVAC Service and Repair
- Commercial HVAC Replacements & Upgrades
- New Commercial HVAC Construction
- Indoor Air Quality (IAQ) Testing, Monitoring, and Improvement
- Design Build HVAC Solutions
- Equipment Replacement and Installation
- HVAC System Upgrades for High Efficiency
Why Choose Donnelly Mechanical?
With over 30 years of operational excellence, Donnelly Mechanical has cultivated a distinguished clientele throughout New York City, serving more than 1,700 commercial maintenance clients. Their commitment to customer satisfaction is evident in their rapid response capabilities, facilitated by a unique NYC zoning system and a fleet of vehicles, ensuring technicians can address emergencies swiftly, whether by van or on foot. The company emphasizes a proactive approach through custom preventive maintenance agreements, designed to extend equipment lifespan and reduce operational costs for their clients. Donnelly Mechanical prides itself on employing factory-trained technicians and a robust safety program, reflected in their impressive Experience Modification Rate (EMR) of .77, underscoring a dedication to safe and efficient service delivery. Their customer testimonials consistently highlight professionalism, attention to detail, prompt communication, and a deep-seated commitment to putting client needs first, solidifying their position as a trusted advisor and reliable partner in commercial HVAC solutions.
Services Offered
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Review Breakdown
Reviews
Showing 8 of 37
One of their drivers almost hit my kids while we were crossing the street and then got out and threatened us because we had t...
Tried to get a estimate from them. The project manager kept saying he's going to come back with a ladder. He was unresponsive...
Very nice atmosphere professional & helpful. I recommend this shop to do a great job. I was happy with my service. They put i...
From management on down to the service techs, Donnelly is a first rate HVAC company. Their responsiveness to any issues both ...
Balding driver of white Donnelly Mechanical van cut me off driving dangerously, erratically, and speeding, endangering my lif...
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At a Glance
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Service Areas
Serves New York City and surrounding areas
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New York City HVAC Market Insights
Typical Price Ranges
Seasonal Demand
Heating demand surges in winter with freezing temperatures common.
Peak Season: November - March
Tip: Get furnace inspections in fall before the cold hits.
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