After nearly 40 years of dedicated service to the community, David and Libby Bangs have decided to retire.

Beginning October 1, 2024, we are proud to announce that Bangs HVAC has joined forces with Fernand Denis Inc., another trusted family-owned company with a long history in heating and cooling.

Rest assured—Bangs HVAC will continue to serve you from the same location, with the same great team you already know and trust.


About Fernand Denis Inc.

From Humble Beginnings to Local Leadership

A Family Story
Founded in 1976, Fernand Denis Inc. began as a small, home-based business in St-Isidore with just one truck. While Fernand handled service calls door-to-door, his wife Françoise managed the paperwork. In 1983, after earning his propane license, Fernand hired the company’s first full-time employee and added a second truck—laying the foundation for steady growth.

Growing Into a Local Leader
In 1991, the business took a major step forward with the opening of a full office and shop in St-Isidore. By 1996, Fernand’s sons, Pascal and Patrick, had joined the company. Today, Fernand Denis Inc. employs more than 35 dedicated professionals and has become the leading name in heating and cooling across Glengarry, Prescott, and Russell.

With thousands of satisfied homeowners and builders, Fernand Denis Inc. proudly serves communities such as St-Isidore, Casselman, Embrun, Alexandria, Clarence-Rockland, Hawkesbury, and beyond—building trust one home at a time.

Paiement de facture - Fernand Denis Inc.


What Does This Mean for You?

  • Same trusted team – You’ll continue to work with the same professionals you know and trust.
  • Same convenient location – We remain proudly located in Perth, Ontario.
  • More resources, better service – Bangs HVAC is now backed by Fernand Denis Inc.’s experience, inventory, and technical expertise.
  • Expanded product and service offerings, including:
    • High-efficiency furnaces, air conditioners, heat pumps, and boilers
    • Wall-mounted and floor heating systems
    • Ventilation solutions (HRVs and ERVs)
    • Propane equipment and installations
    • Service and Maintenance Plans
    • Emergency Services

We are committed to making this transition seamless for our customers.
 We look forward to continuing to serve you with the same care and attention—now with the added strength of the Fernand Denis Inc. team.

Latest News

Important Announcement

Important Announcement

After nearly 40 years of dedicated service to the community, David and Libby Bangs have decided to retire. Beginning October 1, 2024, we are proud to announce that Bangs HVAC has joined forces with Fernand Denis Inc., another trusted family-owned...

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