Turn-Key Replacements and High Efficiency System Upgrades
Donnelly Mechanical’s Special Projects division is committed to delivering intelligent HVAC solutions and upgrades. Our primary focus is to provide support and resources for mechanical systems that are above and beyond the general maintenance and repair services scope. From beginning to end, Donnelly’s Project Management team takes a high level view to ensure that your HVAC equipment delivers sustainable, efficient performance and superior comfort over the life of the system. Taking this strategic view ensures that your entire facility and all of its moving parts work together to achieve the common goal.
We enjoy the challenge of determining an intelligent solution not only to replace failed equipment, but to improve the operation of the facility. When designing and installing a system into an existing building or completing a retrofit project, Donnelly Mechanical has a track record of providing the most unique, intelligent, practical, efficient, and cost-saving solutions and upgrades.
The SAFEST Mechanical Contractor in New York City
From supplemental HVAC installations to 500-ton chiller replacements, we have you covered.
Our turnkey approach allows for a single point of contact for all trades and processes throughout the duration of the project.
Turn-key Equipment Replacements and Installations
High-Efficiency System Upgrades
Refrigerant Conversions
Piping, Ductwork, Control Enhancements & Replacements
NYC Permits/Filing and Violation Resolution
Indoor Air Quality Solutions
Value Engineering & Equipment Payback Analysis
We retained Donnelly Mechanical to provide a turn-key replacement of obsolete air handlers. We provided the basic performance specifications we needed for the areas the equipment would serve and they did the rest from shop drawing to unit commissioning. They acted as general contractor and retained the services of all trades necessary to execute the work. Existing chilled water and steam risers required modifications as did electrical infrastructure. The project manager was present every day that work took place. He provided daily briefings on progress. Every aspect of the project was meticulously planned. The equipment being replaced was the original and thus this project presented challenges that were not a factor at the time of original installation. Everything had to fit within confines of mechanical rooms and provide adequate clearances as necessary for persons to work. I have heard tales of woe about equipment arriving at loading docks and then not fitting in the elevator, not fitting through the door, not making the turn, etc. Donnelly brought a representative from the equipment manufacturer to the site to walk the route from the street to the mechanical room so that every doorway, corridor, elevator, turn, etc was accounted for and thus there were no logistical issues that often arise in a large-scale project. All tradespersons displayed professionalism throughout and were very respectful of the property.
FAQ
We handle a wide range of HVAC equipment replacements and upgrades, including air handlers, chillers, boilers, piping, ductwork, and control systems. We also provide refrigerant conversions to meet new environmental standards.
Upgrading your HVAC system can improve energy efficiency, reduce operating costs, and enhance indoor comfort. It can also extend the lifespan of your equipment and ensure compliance with current regulations, such as LL97.
Yes, we offer high-efficiency upgrades that improve the performance of existing systems. This includes upgrading controls, ductwork, or adding supplemental equipment to enhance efficiency without a full system replacement.
Signs that your system may need replacement include frequent breakdowns, increasing repair costs, reduced energy efficiency, or outdated technology. Our team can perform a thorough assessment to help you determine if replacement is the best option.
The lifespan varies depending on the type of equipment, usage, and maintenance. On average, a properly maintained unit has a lifespan of 10-14 years depending on application of use.
Yes, we ensure all HVAC replacements and upgrades comply with local codes and regulations, including NYC building codes and any specific environmental requirements like refrigerant conversions.
Yes, we specialize in designing custom HVAC solutions that meet the specific needs of your building, whether it’s retrofitting an existing system or integrating new technology to enhance performance.
A full system replacement includes the removal of outdated equipment, installation of new, energy-efficient systems, and necessary modifications to piping, ductwork, and controls. We handle all aspects of the project from start to finish.
During installation, our team will work efficiently to minimize disruption. We handle logistics, permits, and coordination with other trades. You’ll receive regular updates and a final walkthrough to ensure the system operates as expected.
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Commercial HVAC
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