Kohler Ronan is a multi-disciplined engineering consultancy dedicated to providing exceptional mechanical, electrical, plumbing, fire protection, and technology design, as well as comprehensive energy analysis, sustainable design, and commissioning services. From our offices in Danbury, Connecticut and New York, New York, our diverse team of approximately 70 professionals collaborate 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.

Founded in 1998, the firm is led by seven partners representing nearly 200 years of combined industry experience. Kohler Ronan 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 principals earned his Well AP, Fitwel Ambassador, and Certified Passive House Designer designations. Currently, the firm is 5% female owned and is a certified Small Business Entity (SBE).

Kohler Ronan is an approved Technical Consultant providing valuable assistance to clients interested in reducing energy use and accessing incentives in both New York and Connecticut. In New York, we are approved under NYSERDA’s Commercial New Construction Program and also serve as an Independent FlexTech Consultant. As part of the Energize Connecticut initiative, Kohler Ronan is approved for projects within Eversource and United Illuminating territory. Under each of these programs, our professionals provide technical support in the form of energy modeling and controls commissioning to assess and identify appropriate energy efficiency opportunities for new construction and substantial renovation projects. Additionally, Kohler Ronan is pleased to join a growing number of MEP/FP industry leaders in accepting the Carbon Leadership Forum (CLF)’s MEP 2040 Challenge. As signatories, we are committed to “advocate for and achieve” net zero operational and embodied carbon by 2030 and 2040 respectively, across all our projects.


At Kohler Ronan, “Engineering Excellence and Client Partnering” is our goal. The firm strives to not only meet, but exceed client expectations. We have a successful history of providing innovative, reliable, energy-efficient engineering and design services, combined with unsurpassed client service. We attempt to minimize the engineering impact and maintain the integrity of architecture. By examining each project from the client’s point of view via effective communication, we assist our clients in making informed project decisions. The result is a portfolio of successful projects and numerous long-term client relationships.