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 is extremely pleased to announce that we have achieved COR Certification from the IHSA.     Providing a safe and healthy workplace, and creating safe work sites on every project has always been central to the way that DILFO operates; we are proud......

  • Creating a positive workplace environment that support employees with professional growth while also being excited to come to work every day is a challenging task that DILFO strives for – and achieves! DILFO has been once again recognized as a top ten Best Places to......

  • The work at the new Health and Sciences building for the University of Ottawa continues to make some great progress! DILFO has been planning this project since summer of 2021, our work on the jobsite started April 2022, and is privileged to be a part......

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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