Your Home Comfort is Our Priority
A Trusted Family Business Serving Ottawa and Surrounding Areas
For over 45 years, Fernand Denis has been a family-owned and operated heating and cooling company dedicated to providing exceptional service to residential and commercial clients in Ottawa, Orleans, Cumberland, Glengarry, Prescott, and Russell. We pride ourselves on our outstanding customer service, quality workmanship, and unwavering attention to detail.
Our Expertise
Our skilled technicians are highly qualified and experienced in all aspects of heating and cooling, including:
- Furnace Installation & Repair: We install and service all major brands of furnaces, offering a minimum 5-year warranty on installations.
- Air Conditioning Installation & Repair: We provide high-efficiency and quiet Lennox central air conditioners, ensuring energy efficiency and comfort.
- Boiler Installation & Repair: Our experienced technicians handle installations and repairs of boilers, ensuring optimal efficiency and safety.
- Fireplace Installation & Repair: We install and repair all types of fireplaces, ensuring a warm and cozy ambiance in your home.
- Heat Pump Installation & Repair: We install and maintain reliable heat pumps, providing efficient heating and cooling.
- Radiant Floor Heating: We seamlessly install and maintain radiant floor heating systems for consistent warmth.
Beyond the Installation
We also offer comprehensive maintenance and repair services for:
- Duct cleaning and air quality improvement
- Liquid propane installation for agricultural equipment and dispensers
- Emergency furnace repair to get you heating quickly in cold weather
Our Commitment
At Fernand Denis, we believe in:
- Customer-first approach: We prioritize your needs and work with you to find the best solutions for your unique situation.
- Quality workmanship: We use only the highest quality materials and install systems to the highest standards.
- Transparency and communication: We provide upfront pricing and clear explanations of all services and charges.
Contact Us Today
For over four decades, we have been proudly serving the community with dependable heating and cooling solutions. Contact us today to learn how we can help you achieve comfort and efficiency in your home or business.
Overall Experience
The overall experience with Fernand Denis Inc. seems to be mostly positive, with many customers expressing satisfaction with the company's service, installation, and customer support.
Positive Aspects
Professionalism and Knowledge
Many customers praised the professionalism and knowledge of the company's employees, including salespeople, installers, and technicians. They were described as polite, courteous, and knowledgeable about the products and services.
Timely Installation and Cleanup
Several customers noted that the installation process was completed in a timely manner, and that the installers cleaned up after themselves, leaving the area spotless.
Great Customer Service
The company's customer service was commended by many customers, who appreciated the prompt response to their queries and the helpfulness of the staff.
Negative Aspects
Delays and Lack of Communication
One customer expressed frustration with the delay in receiving a replacement part for their central air conditioning unit, and the lack of communication from the company.

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