A healthy home starts with well-ventilated indoor air. A couple living on the North Shore came to this realization after months of dealing with the discomforts caused by excessive humidity in their home. Persistent odors, condensation on windows, and a heavy, stale atmosphere—these were all clear signs of an inadequate ventilation system. That’s when they reached out to AirGreen, experts in residential and commercial ventilation systems in Montréal, Laval, Longueuil, the South Shore and the North Shore.
A Targeted Intervention to Improve Indoor Air Quality
When we were contacted, our team began with a complete indoor air quality analysis. The relative humidity levels were over 70%, far beyond the recommended range (between 40% and 50% for optimal comfort). Stale air lingered in certain parts of the home, particularly in the basement and in the bedrooms located on the north-facing side.
Diagnosis and Technical Recommendations
Our inspection revealed that there was no effective controlled mechanical ventilation system (CMV) in place. The existing air exchanger was outdated, poorly installed, and failed to ensure even airflow throughout the house. Additionally, there was no humidity control system installed. We therefore recommended the following:
-
Complete removal of the old air exchanger.
-
Installation of a centralized heat recovery ventilation system (HRV) with high efficiency.
-
Integration of humidity sensors for automatic airflow adjustment.
-
Partial redesign of the ductwork to ensure optimal airflow distribution throughout the home.
Installing a Venmar AVS® N Series HRV Ventilation System
For this residence, we chose the Venmar AVS® N Series HRV 160 CFM model. This ventilation system is known for its energy efficiency, reliability, and ability to provide consistent fresh air renewal while reducing indoor humidity. Its technical features include:
-
Airflow rate of 160 CFM – ideal for a medium-sized single-family home.
-
Heat recovery efficiency of up to 75%, reducing energy loss.
-
MERV 8 filters, effectively capturing fine airborne particles.
-
Digital wall-mounted control with integrated humidity sensor.
A Project Carried Out with Precision and Discretion
Our certified technicians completed the installation over the course of two days. The biggest challenge was redesigning the duct system in a limited space, without damaging the existing interior finishes. Thanks to our expertise in custom ventilation system design, we used insulated flexible ducts and acoustic silencers to minimize noise disturbance.
Results Seen Within Days
Just one week after the installation, the improvements were already clear and noticeable:
-
Humidity stabilized around 45%, eliminating signs of condensation.
-
Significantly fresher air and better circulation throughout the home.
-
Reduction of lingering odors, particularly in the basement.
-
Increased thermal comfort thanks to heat recovery during cool nights.
The Importance of Proper Home Ventilation
Many homeowners are unaware of the direct impact that poor ventilation has on comfort, health, and energy consumption. Excess humidity can lead to:
-
Growth of mold and allergenic fungi.
-
Damage to materials (plaster, wood, paint).
-
Persistent odors and air that’s difficult to breathe.
Investing in a modern, high-performance HVAC ventilation system is not just a comfort choice—it’s a guarantee for your household’s health and the longevity of your building.
Practical Tips for Effective Ventilation
At AirGreen, we advise all our clients to:
-
Have their ventilation system inspected every 2 to 3 years.
-
Clean or replace the air exchanger filters each season.
-
Regularly check that humidity sensors are working properly.
-
Avoid blocking air vents with furniture, curtains, or other objects.
Why Choose AirGreen for Your Ventilation Needs?
For over 15 years, AirGreen has been a leader in residential and commercial ventilation in Montréal and across the metropolitan area. Our strength lies in:
-
Precise, personalized diagnostics.
-
Use of top-tier ventilation technologies.
-
Flawless installations, performed by certified technicians.
-
Responsive, transparent, and human customer service.
One Story Among Hundreds
This North Shore couple’s experience is just one of many successful interventions we’ve completed. Every home is different, as is every ventilation need. We tailor our solutions to each layout, each budget, and each climate reality in Greater Montréal.
Are you dealing with humidity issues or poor indoor air quality in Montréal, Laval, Longueuil, the South Shore, or the North Shore? Follow the example of this North Shore couple: contact AirGreen for a professional diagnosis and a custom HVAC installation.