About Us

MJ Daly was founded in 1882 by Michael Joseph Daly as a small mechanical contracting firm using horse-drawn, wooden-wheeled trailers to deliver pipe and equipment to customers. Today, MJ Daly stands strong with decades of experience constructing and servicing buildings throughout Connecticut and Western Massachusetts. Our leading-edge approach in building information modeling (BIM), modular fabrication methodology, and integrated project delivery, provide MJ Daly a depth of expertise across a full range of system types.


Part of a Larger Group

MJ Daly is part of one of the largest Mechanical / HVAC Construction companies in New England – Arden Building Companies. Our multi-faceted group of geographically diverse firms provides building systems for new and existing buildings or facilities as well as service and maintenance for consistent performance at top efficiency.


Management Team

With decades of industry and leadership experience, our management team leads by example, instilling a culture of safety, collaboration, and dedication.

Edward Carvalho

Dan Nelson
Vice President

Paul Evon
Vice President
Fire Protection