Why Choose Central Air Conditioning?
Consistent comfort throughout your home
Unlike room-based units, central air conditioning distributes cooled air through your ductwork for a consistent temperature from room to room, without the uncomfortable fluctuations of individual systems.
Better indoor air quality
The system filters circulating air, helping to reduce dust, allergens, and excess humidity in your home.
Savings on your energy bill
A properly sized and maintained central system uses less energy than a combination of individual units, which can reduce your cooling costs over the long term.
Quiet and discreet
The outdoor unit is installed away from your living space, significantly reducing indoor noise compared to window units or portable air conditioners.
What to Consider Before Installation
Choosing the right central air conditioning system for your home is essential to maximizing comfort and energy efficiency. Several factors should be evaluated before proceeding with installation.
Your home's size and layout
A system must be properly sized based on your property's square footage, ceiling height, and room layout. An undersized unit will run continuously without reaching the desired temperature; an oversized one will cool too quickly without removing humidity.
Energy efficiency (SEER rating)
SEER measures the amount of heat removed per unit of energy consumed. This rating ranges from 12 to 26. Our Lennox lineup covers this entire range, from entry-level models that meet minimum ENERGY STAR® requirements to high-performance variable-speed units. The higher the rating, the lower the operating costs over the life of the system.
Replacing an existing system
Your needs may have changed since your current air conditioner was installed. Renovations, additions, or improved insulation all affect your cooling capacity requirements. We make sure the new unit is properly sized for your home as it is today, not as it was at the time of the original installation.
Thermostat compatibility
A programmable or smart thermostat can reduce your energy consumption by up to 20% while maintaining consistent comfort. We can advise you on compatible options during your free estimate.
Insulation and window exposure
Your home's insulation level and window orientation directly influence your cooling needs. Our technicians take these factors into account during the on-site assessment.
The condition of your ductwork
Central air conditioning relies on your existing ductwork to distribute cooled air. Old, poorly insulated, or leaky ducts can reduce the system's efficiency. Our technicians assess the condition of your ducts during the on-site visit.
We have successfully installed hundreds of central air conditioning systems, and we are ready to offer you reliable, professional, and affordable service.
Why Choose Fernand Denis for Your Central Air Conditioning?
At Fernand Denis, installing a central air conditioning system is about more than a transaction. From the assessment of your home through to commissioning, we make sure you get the right system, installed correctly, with professional follow-up for years to come. Here is why homeowners in Gatineau and St-Isidore trust us.
RBQ-Certified Technicians
Our team holds the required certifications to work in both Quebec and Ontario, in full compliance with applicable standards in both provinces.
Nearly 50 Years of Experience
We have been installing and servicing HVAC systems since the company was founded. Our reputation is built on decades of reliable service to homeowners in the region.
Service in Gatineau and St-Isidore
We have dedicated teams in both regions for fast, local service without unnecessary wait times.
Lennox Systems Only
We install Lennox air conditioning systems, one of the most recognized brands in residential HVAC. Our technicians are trained to install and commission every model correctly.
Honest Advice, No Pressure
Our priority is to clearly inform you about your options without steering you toward unnecessary expenses.
7-Day Availability
Whether it is a repair during a July heat wave or a question about your system, our team is reachable 7 days a week.
Free Estimate, No Obligation
We assess your home before recommending anything. You receive a clear, detailed estimate with no hidden fees.
Maintenance and Repair for All Brands
Our service does not stop at installation. We provide maintenance and repair for the vast majority of central air conditioning systems, regardless of brand or who originally installed them.
Frequently Asked Questions About Central Air Conditioning
Fernand Denis offers complete central air conditioning services, including system selection, installation, maintenance, and repair.
The required capacity depends on factors such as home size, insulation, windows, and layout. Experts evaluate these elements to recommend the appropriate BTU rating.
SEER is the Seasonal Energy Efficiency Ratio of an air conditioner. A higher SEER rating means better energy efficiency and lower long-term operating costs.
Yes. When replacing an existing system, the team ensures the new unit matches the home’s current needs, especially after renovations or expansions.
Yes. A programmable thermostat can help reduce energy consumption while maintaining consistent comfort.
Yes. Maintenance and repair services are available to ensure optimal performance and system longevity.
Yes. The team provides guidance throughout the process to help select the most suitable central air conditioning solution.
