Wm. J. Donovan Co. celebrated its 100th year of HVAC and specialty sheet metal services in 2013. We focus primarily on highly technical and ever-evolving industries, including pharmaceuticals, healthcare, research and higher education. For more than a century, Wm. J. Donovan Co. has been a trusted leader in mechanical and sheet metal contracting, delivering precision, quality, and integrity across the Philadelphia region and beyond.

Built on a foundation of craftsmanship and innovation, we specialize in complex projects for the pharmaceutical, healthcare, research, and higher education industries - where performance and reliability are critical. Wm. J. Donovan Co. is a charter member of the Philadelphia Chapter of the Sheet Metal Contractors Association and remains active in various industry organizations including the Mid Atlantic Environmental Balancing Association, the National Environmental Balancing Bureau, the American Society of Heating, Refrigeration, and Air Conditioning Engineers, and the American Welding Society.

Today, we are redefining what partnership means through our Design Assist Collaboration Initiative, integrating early with designers and builders to deliver smarter, safer, and more efficient mechanical systems. Our commitment to our people, our clients, and our community continues to drive every decision we make.

113 Years Strong - and Still Building Forward.