A Family-Owned Legacy in Heating & Cooling
For over 45 years, Fernand Denis has been a trusted name in heating and cooling services in Ottawa, Orleans, Cumberland, Gloucester, Prescott, and Russell. Founded by a family with a dedication to quality and customer satisfaction, we've built a reputation for reliable service and personalized solutions.
Dedicated to Quality & Customer Service
At Fernand Denis, we prioritize quality workmanship and exceptional customer service. Our skilled technicians are highly trained and experienced, ensuring your complete satisfaction. We take pride in:
- Detailed consultations to understand your specific needs and comfort preferences.
- Honest recommendations based on your budget and system requirements.
- Personalized solutions to maximize the efficiency and performance of your heating and cooling systems.
Comprehensive Solutions for Every Need
Whether you need a new furnace installation, a repair for your air conditioner, or comprehensive duct cleaning, we've got you covered. We offer a comprehensive range of services, including:
Heating Services
- Furnace installation and repair
- Boiler installation and repair
- Heat pump installation and service
- Radiant floor heating installation and service
- Liquid propane installation
Cooling Services
- Air conditioner installation and repair
- Ductless air conditioning installation and service
- Comprehensive duct cleaning
Additional Services
- Fireplace installation and repair
- Air exchanger installation
- Troubleshooting and diagnostics
- Emergency repair services
Experience & Expertise You Can Trust
Our team is licensed and certified by the TSSA and is a proud member of the HRAI. We stay updated on the latest technological advancements and industry trends to offer you the most efficient and reliable solutions.
Choose Fernand Denis for
- Over 45 years of expertise
- Family-owned and operated
- Unwavering commitment to customer satisfaction
- Comprehensive service offerings
- Responsive and reliable technicians
Let us be your trusted partner in achieving optimal comfort and efficiency in your home. Contact us today for a personalized consultation!
Overall Satisfaction and Praise
In general, customers have expressed great satisfaction with the services provided by Fernand Denis Inc. Several reviewers have highlighted the professionalism, knowledge, and politeness of the staff, including sales representatives, installers, and customer service. The quick response times, no-pressure sales approach, and thorough explanations of the products and services have all contributed to positive experiences for customers.
Customer Service and Support
Customers have praised the company's customer service and support, with many mentioning the prompt responses to their inquiries and issues. The staff's ability to address concerns and provide solutions has been a key factor in the positive feedback received.
Quality of Work and Products
The quality of the work performed by Fernand Denis Inc. has been consistently praised by customers. The installation teams have been commended for their professionalism, efficiency, and attention to detail. Additionally, the quality of the products provided has been appreciated by customers, who have noted the reliability and performance of the heating and cooling systems installed.
Negative Experiences
One customer had a negative experience with a long wait for a replacement part for their central air conditioning unit. Despite the initial frustration, the customer was eventually satisfied with the service and support provided by the company.

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