A trusted partner

DILFO is a second generation, family-owned business with more than 35 years of experience. As one of Eastern Ontario’s largest mechanical contractors and manufacturers, we have built a solid reputation for excellence and the DILFO name is synonymous industry-wide with excellence, reliability, expertise and innovation. 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.

Advantages of Working with DILFO

  • Dedicated to performance excellence and advancement in construction technology. Our team is committed to continuous learning; we keep abreast of the latest industry best practices and leading edge technologies so we can offer you the very best.

  • A 25,000 square foot state-of-the-art sheet metal manufacturing facility. We fabricate all of our ductwork and fittings onsite ensuring that our products are of exceptional quality and our completed on time and within budget. We have significant experience fabricating with various materials including galvanized metals, stainless steel and aluminum.

  • Leading-edge technology. We have a specialized CAD department for engineered layout spooling and prefabrication, BIM, sleeving, coordination and interference drawings and computerized site hanger layout.

  • A highly skilled, solutions-focused team. We employ a large team of trade professionals, including sheet metal journeymen, refrigeration and air conditioning mechanics and welders. Our team also includes skilled and experienced project managers, project coordinators and estimators.

  • Safety is our priority. Our in-house health and safety personnel are committed to implementing safety policies and safety training which exceed the Ontario health and safety regulators standards.

  • A green approach. We are firmly committed to protecting the environment. We work on LEED projects and ensure that our manufacturing facilities employ the latest green technologies.

Our services


DILFO Mechanical Contracting focuses on provided comprehensive Building Information Modeling (BIM), CAD coordination and interference drawings, fabrication, and overall project management services. Our 25,000 square foot state-of-the art facility, along with our CAD/CAM software, allows DILFO to produce custom, quality sheet metal product, maintaining strict adherence to timeline and budget requirements. DILFO’s project managers are adept at handling resources, sub-trades, equipment, and materials on a wide variety of mechanical projects, employing a skilled and experienced labour force with the knowledge and expertise required to get the job done properly and on schedule.


We pride ourselves on providing the highest level of service ensuring clients needs are met in a timely and professional manner. We offer reliable, quality service at competitive pricing. Our fully licensed team of technicians brings a wealth of experience in all aspects of the HVAC industry.

We believe in building long-term relationships with our clients and have worked hard to earn our reputation as a leader in the mechanical contracting industry.



J.C. Seguin, now a division of DILFO, provides a full range of plumbing, HVAC piping and heating services for new and retrofit projects in the industrial, commercial, and institutional (ICI) construction sectors.

Professional Affiliates

DILFO is an active and proud participant of a number of professional and trade associations, with whom we share a desire to make a proactive and lasting contribution to the development of our industry’s technical standards, safety and innovation. These associations include:



Safety is a key priority at DILFO and it’s an integral part of everything we do. Our mandate is to meet or exceed all Ontario Occupational Health & Safety regulations. We achieve this through extensive training and education for all of our employees. As part of our commitment to continuous improvement, we’re currently working towards the Canadian Federation of Construction Safety Associations’ Certificate of Recognition (COR) in occupational health and safety program accreditation.

HVAC Services

We are vitally interested in health and safety and we provide on-going training to minimize risks for our employees and for you, our customers.  Protection of employees from injury or occupational hazard is a major continuing objective.  All management, employees and sub-contractors must be dedicated to the continuing objective of reducing risk of injury. We are fully committed to achieving the highest standards of occupational health and safety. We have, over the years, developed a comprehensive series of policies, procedures and programs to ensure that our minimum standard of work exceeds what the law requires.

Community involvement

We believe strongly in the importance of giving back to our community and each year we support local and national charitable organizations, including:

  • The Ottawa Food Bank
  • The Ottawa Hospital Foundation
  • The National Camps for the Blind
  • The Ottawa Mission
  • The Kidney Foundation
  • The Salvation Army
  • The Canadian Breast Cancer Foundation
  • The Shepherds of Good Hope
  • The Gloucester Emergency Food Cupboard
  • The Children’s Hospital of Eastern Ontario
  • Hospice Care Ottawa
  • Juvenile Diabetes Research Foundation

DILFO is honoured to be a major contributor to the construction of The Miracle League of Ottawa’s Miracle Field at Notre-Dame des Champs park in Orleans. The Miracle Field provides special-needs children, young adults and adults the opportunity to play baseball on a purpose-built surface which includes wheelchair accessible dugouts and a completely flat surface to eliminate barriers to wheelchair bound and visually impaired players with special needs.

We played a major role in the construction of Roger’s House, a hospice for pediatric palliative care for children at CHEO, and in the renovations required at the Shepherds of Good Hope kitchen for the homeless.

We believe in making sound investments in the education of our future construction trades people and leaders and donated $100,000 to help with the construction of the Algonquin Centre for Construction Excellence.

In 2016, we were honoured to be the title sponsor of the YMCA/YWCA Cycle for Strong Kids (Powered by DILFO HVAC Services) and entered a team in this indoor cycling event focused on raising much needed funds to improve the health and well-being of children and youth in our community.

DILFO’s “Team Green Machine” also participates in the annual 100km The Ride event in support of the Ottawa Hospital Foundation.

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