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Kohler Ronan is a multi-disciplined engineering consultancy.

Dedicated to providing exceptional mechanical, electrical, plumbing, fire protection, and technology design, the firm was founded in 1998 and is now led by seven partners representing over 200 years of combined industry experience. The firm is also pleased to offer energy analysis and commissioning services in house. From our offices in Danbury, Connecticut, and New York, New York, our diverse team of approximately 70 professionals collaborates with prominent architectural firms on a wide array of regional and nationally recognized project assignments. Commissions include those for world renowned museums, fine and performing arts centers, prestigious universities, state-of-the-art educational and healthcare facilities, luxury residences, and premier recreation establishments. Additionally, we have the privilege of designing specialty systems for landmark sites and historically significant buildings across the country.





Licensed PEs



Sustainability is at the core of our engineering practice.

In all projects, Kohler Ronan seeks to design sustainable building systems which enhance occupied spaces and are socially and environmentally responsible. The firm is proud of its extensive expertise and innovative approach in the field of sustainable design and is a member of the US Green Building Council (USGBC). Nearly 20 of our engineers are Leadership in Energy and Environmental Design Accredited Professionals (LEED AP), while one of our partners has earned his Well AP, Fitwel Ambassador, and Certified Passive House Designer designations.

Kohler Ronan is dedicated to our collective low-carbon future and is pleased to join a growing number of MEP/FP industry leaders in accepting the Carbon Leadership Forum (CLF)’s MEP 2040 Challenge. As a signatory, the firm is committed to “advocate for and achieve” net zero operational and embodied carbon by 2030 and 2040 respectively, across all its projects. We can help you make that same commitment.


Engineering excellence and client partnering is our goal.

Central to our philosophy is the desire to not only meet, but exceed client expectations. To this end, each of our engineers conducts thorough due diligence and engages in effective communication to assist our clients in making informed project decisions. Further, we look to provide innovative, reliable, energy-efficient engineering and design services which maintain the integrity of architecture and minimize the engineering impact of our designs. Combined with unsurpassed client service, the result is a portfolio of successfully completed projects and numerous long-term partnerships and client relationships.


We seek to become an extension of the architect’s office in pursuit of a common goal.

Kohler Ronan was established to support unique projects and the architects that envision them. We work in partnership to build, restore, and transform buildings to improve their function and extend their life. Our collaboration is not just with the current design and executive architects, but with all the architects throughout the history of the building. Similarly, our partnership welcomes and incorporates all stakeholders of the building including the owner’s leadership team, employees, facilities staff, and any end-users or building occupants.

Our project approach begins with research into the historical perspective of the existing architecture and the complementing building systems. This process requires extensive field investigation to understand in detail all relevant mechanical, electrical, plumbing, fire protection, and technology systems’ configurations and how they are currently operated. We document this information in easy-to-read, color-coded sketches and equipment/system schedules. These work products facilitate discussions and demonstrate opportunities both regarding the development of the current project and possible long-term capital planning.

“Kohler Ronan not only understands, but shares the University’s vision and goals for each project. As such, they have proven to be not a service provider, but a true partner in improving the Fairfield University experience for its students, faculty, and staff for years to come.”

David FrassinelliAssociate Vice President for Facilities Management, Fairfield University

“The design team was responsive, available, and always acted in the School’s best interest…Kohler Ronan was committed to creating highly efficient systems that minimized the impact on the earth’s resources. As stewardship and environmental responsibility are among the values of our faculty, staff, and student body, Kohler Ronan was a perfect ideological match as well.”

Mark Gordonformer Facilities Director, Collegiate School

“We needed engineers whose systems design would be of the same caliber as the historic buildings themselves. We found those engineers in Kohler Ronan’s MEP/FP team. Their expertise, ingenuity, and vision not only permitted our architectural creativity, but further enhanced it. Our designs were not limited by engineering systems but were fully supported by them.”

Jasper Tonkformer Associate Director, Mecanoo Architecten B.V.

“They are also resourceful and flexible, and understand that the design of a building, particularly a museum, is an iterative process where architecture and engineering solutions evolve together to achieve the best results.”

Jack BeyerBeyer Blinder Belle

“Kohler Ronan designs engineering systems that allow theatrical experiences to be enjoyed as they are meant to be. …[Their] collaboration with the project’s theater and lighting consultants, and the creative solutions which resulted, helped restore and transform our beloved, historic theater into a modern venue.”

Casey Reitzformer Executive Director, Second Stage Theater

“Kohler Ronan did excellent work in managing demanding project conditions, which included stringent acoustic and humidity control requirements, complex performance and system upgrades to a building originally constructed under the 1938 NYC Building Code, and responsiveness to evolving MEP priorities for artists, employees, and patrons for post-pandemic re-occupancy.”

Peter FlammExecutive Director, Lincoln Center Development Project, Inc. & Vice President, Real Estate Development, Lincoln Center for the Performing Arts, Inc.

Southern Connecticut State University School of Business 

Southern Connecticut State University School of Business 

Southern Connecticut State University School of Business 

kohler ronan 

kohler ronan 

kohler ronan 

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New York Office

171 Madison Avenue, New York, NY 10016
Fax: 212.695.2423

Connecticut Office

93 Lake Avenue, Danbury, CT 06810
Fax: 203.778.1018


For Career Opportunities
& General Inquiries:

For Marketing Inquiries:

Caroline Russo
Associate & Director of Marketing

Alexandra Nigro
Marketing Coordinator