Our History

A Family Beginning

Fernand Denis is a family owned heating and cooling company with over 40 years of satisfied customers in Glengarry, Prescott and Russell. It all began in 1976 when Fernand saw an opportunity. At that time, it was a home based business in St. Isidore with a single truck. While Fernand’s wife Françoise did the paperwork, he went door-to-door fixing and servicing furnaces.

In 1983, Fernand earned his propane license and hired the first full-time employee. Soon after, a second truck was added and it wasn’t long before the company jumped to four employees.

Growing Into a Local Leader

In 1991, the company took another leap forward when a full office and shop were built in St. Isidore. By 1996, Fernand’s sons, Pascal and Patrick, joined the company. Today, Fernand Denis has over 18 employees and is the industry leader for heating and cooling in Glengarry, Prescott and Russell. With hundreds of satisfied customers, Fernand Denis is also the first choice for homeowners and builders in St. Isidore, Casselman, Embrun, Alexandria, Clarence-Rockland, Hawkesbury and everywhere in between.

What Fernand Denis Stands For

Customers choose Fernand Denis because of strong family values, strong organization and innovative products and solutions. Many customers from 1976 are still customers today. The team at Fernand Denis has experts in a wide range of heating and cooling services, including furnace installation and repair, boiler installation and repair, heat pumps, wall furnaces, radiant floor heating, fireplace installation and repair, thermostats, emergency furnace service, central air conditioner installation and repair, ductless air conditioning, duct cleaning and liquid propane installation. Fernand Denis is pleased to serve all types of customers, from homeowners to builders, landlords to farmers.