Neglected Air Quality, Underestimated Mental Health Effects
In Longueuil, on the South Shore of Montréal, a recent local study conducted in collaboration with public health researchers revealed a direct link between indoor air quality in homes and mental health issues among residents. At AirGreen, we were asked to contribute to this investigation by working on several installations of residential and multi-unit HVAC ventilation systems.
The results of this study are clear: faulty ventilation, poor or unbalanced air exchange, and outdated systems can worsen symptoms of anxiety, chronic stress, and even depression—especially in densely populated urban areas.
The Study: A First of Its Kind on the South Shore
Led by a team of researchers affiliated with the Université de Sherbrooke, the study focused on several boroughs of Longueuil, including Saint-Hubert, Vieux-Longueuil, and Greenfield Park. Over 500 participants were monitored for 12 months. Among them, those living in homes with inadequate ventilation showed rates of irritability, chronic fatigue, and sleep disorders that were 30% higher than the regional average.
High CO₂ levels, excess humidity, or on the contrary, overly dry air were all identified as aggravating factors. The study also highlighted the impact of improperly evacuated household pollutants (VOCs, fine particles, mold) on mental health.
AirGreen Interventions: When Ventilation Becomes Preventive Care
At AirGreen, we were called in to work at a seniors’ residence in Saint-Hubert, where several occupants were exhibiting signs of stress and disorientation. The central ventilation system had not been serviced in over six years. Our technicians found:
-
Ducts clogged with dust and mold spores
-
A VHR air exchanger at the end of its life cycle, with non-compliant airflow
-
Indoor humidity levels consistently over 65%
We proceeded with:
-
Installing a new ENERGY STAR certified VHR exchanger
-
Complete duct cleaning and disinfection
-
Adding a smart control system for humidity and ventilation cycles
-
Balancing airflow based on actual occupancy
Three months later, the residence staff reported a noticeable decrease in sleep-related complaints, improved overall mood among residents, and a more comfortable indoor environment.
Indoor Air: A Key Factor Often Overlooked in Mental Health
1. Stagnant Air Affects the Nervous System
The buildup of CO₂ and pollutants in indoor air reduces brain oxygenation, leading to irritability, loss of focus, and a feeling of oppression. This can worsen existing conditions or trigger new ones.
2. Poor Humidity Levels Affect Morale
Air that's too dry or too humid impacts sleep quality, skin health, and respiratory comfort. These physical symptoms have a direct influence on psychological well-being.
3. Well-Calibrated Ventilation Improves Wellness
A properly designed HVAC system helps remove pollutants, maintain optimal humidity, and promote restorative sleep. This plays a key role in mood regulation—especially among vulnerable populations.
Our Technical Approach: Custom Ventilation in Longueuil
Every ventilation project we undertake in Longueuil is tailored to the specific needs of residential, multi-unit, or institutional buildings. Our services include:
-
Indoor air quality analysis (CO₂, VOCs, humidity)
-
Complete inspection of existing HVAC systems
-
Design of centralized or decentralized mechanical ventilation solutions
-
Installation of high-efficiency VHR/ERV systems
-
Integration of smart regulation systems for managing humidity and airflow
We prioritize the use of ENERGY STAR certified products and favor configurations that allow for easy maintenance to ensure long-term performance and durability.
Financial Assistance Available in Longueuil and on the South Shore
Residents of Longueuil may qualify for several programs to improve their ventilation system:
-
The Rénoclimat program, which offers financial aid for energy efficiency upgrades
-
Local subsidies from the City of Longueuil for residential renovation projects
-
Hydro-Québec LogisVert incentives, when a heat pump is installed in combination
At AirGreen, we guide each client through the grant application process, from preparing the documentation to submitting the final request.
AirGreen’s Strong Presence Across the South Shore
Our specialized team serves the entire Longueuil area, as well as:
-
Boucherville, Saint-Lambert, Brossard, Saint-Bruno-de-Montarville, La Prairie
-
Châteauguay, Candiac, Varennes, Beloeil, Carignan, Saint-Jean-sur-Richelieu
Our proximity allows us to respond quickly, whether it’s for an urgent inspection, a full installation, or routine annual maintenance.
Conclusion: Ventilation, an Overlooked Pillar of At-Home Well-Being
If you or your loved ones are experiencing persistent fatigue, sleep issues, or an unexplained sense of discomfort at home, don’t overlook your ventilation system. Clean indoor air is an essential component of mental health.
At AirGreen, we believe that air quality is a fundamental right. Our customized ventilation solutions help families across Longueuil and the entire South Shore regain lasting comfort and peace of mind.
Book your ventilation inspection in Longueuil today. Improve the air, improve your mood. AirGreen, your trusted HVAC partner on the South Shore.