Your Trusted Partner

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

Our Services

Advantages of Working with DILFO

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.

We fabricate ductwork, fittings, and piping onsite in our 25,000 square foot state of the art sheet metal manufacturing facility and 7,000 square foot plumbing and pipe fitting fabrication facilities,  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.

We have a specialized VDC department for engineered layout spooling and prefabrication, BIM, sleeving, coordination and interference drawings and computerized site hanger layout.

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

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.

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

DILFO is a Proud Member of the Following Associations

Our Commitment to Safety


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, DILFO worked diligently to achieve 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.