DILFO is one of Eastern Ontario’s largest mechanical contracting, HVAC services, and plumbing & heating firms. Our extensive experience with design-build/design-assist and LEED projects has put us at the forefront of our industry. We specialize in large-scale design-build & design-assist projects, new commercial construction, and tenant fit-ups.

DILFO is proud to offer HVAC maintenance as well as 24/7 emergency service

Mechanical Contracting

DILFO Mechanical provides a full range of services for new commercial construction, tenant fit-up, and more.

HVAC Services

Offering 24/7 emergency services, DILFO HVAC also provides specialty equipment, maintenance, service, and construction.

Plumbing & Heating

We offer a full range of plumbing, HVAC piping and heating services for new and retrofit projects in ICI construction sectors.

Your Trusted Partner

DILFO is a second generation, family-owned business with more than 40 years of experience.

We have established longstanding, exclusive partnerships with many general contractors and developers who rely on DILFO for all their prestigious design-build and design-assist projects.

Learn More About DILFO

Our Company News

  • Dilfo Mechanical has been selected as the mechanical contractor partner for the Royal Canadian Dragoons (RCD) project. Valued at 80.6 million, this project will include the construction of a new 100,000 square foot building and the renovation of two other existing buildings within the Canadian......

  • We are excited to announce that our plumbing & heating division name has changedfrom J.C. Seguin Plumbing and Heating Ltd. to DILFO Plumbing & Heating Inc., effective January 8th, 2020. We kindly ask that you update your records to replace our company name in your......

  • DILFO Mechanical was recently named a recipient of the Employees’ Choice Awards 2018-19. This annual competition is organized by the Ottawa Business Journal and the Ottawa Board of Trade, and this year was sponsored by Meldrum Horne & Associates. Surveys were conducted by the Best Companies Group. This......

See All News

Join Our Team!

If you feel you have the right skills and experience to be part of the DILFO team, we’d like to hear from you.

Careers at DILFO