45 Years of Ottawa Mechanical Contracting
Going Beyond the Build Since 1980
1980 – A New Beginning
DILFO was founded by Paul Dillon and Edgar Fournier after the closure of their former employer, J.R. Seguin & Fils. Together with a dedicated team—including Georges St. Jacques, Richard Gadde, Earl Gadde, Donald Suprenant, Armand Fournier, and Pierrette Simpson—they launched operations in a modest 2,000 sq. ft. warehouse on Star Top Road in Ottawa.
1986 – Growing Stronger
With rapid growth, DILFO purchased a 7,000 sq. ft. facility at 1500 Star Top Road, laying the foundation for larger-scale operations.
1990 – Industry Leadership
Co-founder Paul Dillon was appointed Chairman of the Mechanical Contractors Association of Ottawa, marking the company’s growing leadership role in the local construction community.
1993 – Pioneering Technology
DILFO invested in its first automated plasma cutting machine, enhancing productivity and expanding capabilities in sheet metal fabrication.
1995 – A Landmark Project
DILFO contributed to the design-build team for the Palladium (now Canadian Tire Centre), the iconic home of the Ottawa Senators.
2000 – Expansion & Renewal
The team completed major renovations and expansions to both its office and shop facilities, ensuring space for continued growth.
2005 – 25 Years of Excellence
DILFO celebrated its 25th anniversary, looking back on a quarter-century of innovation and client partnerships.
2007 – Passing the Torch
Danny Dillon was appointed Chairman of the Mechanical Contractors Association of Ottawa, continuing the family tradition of industry leadership.
2011 – A New Home Base
DILFO moved into a new 45,000 sq. ft. headquarters on Cyrville Road. That same year, the company invested in a duct coil line to expand sheet metal production—and secured the major mechanical contract for the Department of National Defence’s MHLH Helicopter Facility.
2012 – Building Downtown Ottawa
Awarded the mechanical contract for 90 Elgin Street, a 650,000 sq. ft. Class-A office tower in the heart of Ottawa.
2013 – Expanding Services
DILFO acquired Tempro Services, a local HVAC company, broadening its reach into refrigeration, service, and maintenance.
2017 – Recognized for Safety
Recipient of the SMACNA National Safety Award, affirming DILFO’s dedication to health, safety, and workplace excellence.
2018 – Growing with New Markets
Awarded the HVAC scope for the TWEED cannabis production facility, one of Canada’s leading-edge projects in the emerging cannabis industry.
2019 – Strengthening Capabilities
Acquired J.C. Seguin & Fils, a plumbing and heating firm, enabling DILFO to fully self-perform mechanical scopes in-house. That same year, DILFO delivered the Royal Canadian Dragoons Facility, the Department of National Defence’s first Integrated Project Delivery (IPD) project.
2020 – Community Leadership
Danny Dillon was named Chairman of the Ottawa Construction Association. Beyond industry leadership, DILFO continued to invest in the community—supporting organizations like CHEO, the Ottawa Food Bank and the YMCA. They also played a major role in building the Wabano Centre for Aboriginal Health, a vital hub for healing and culture.
2023–2024 – Best Place to Work
Recognized as one of Ottawa’s Best Places to Work for multiple years running. During this time, DILFO also invested in cutting-edge fabrication technology, adding a laser cutting machine and a waterjet cutter to expand its prefabrication capabilities.
2025 – Celebrating 45 Years
From a small Ottawa warehouse to one of Eastern Ontario’s leading mechanical contractors, DILFO proudly marks 45 years of powering projects, people, and communities.
Get started now
Ready to get started?
Contact us today to discuss your next project and discover how we go beyond the build to deliver lasting results.
Ottawa, ON
1481 Cyrville Road
Ottawa, ON K1B 3L7
Contact
24/7 Emergency HVAC Service
©2026 | All rights reserved by DILFO
Branding and Website by Xactly Design & Advertising