An overheated office, uncomfortable employees, a client meeting on the verge of turning into a nightmare… That’s exactly what we managed to prevent thanks to a fast and expert intervention from our team at AirGreen. This incident, which took place in a commercial office in Laval, perfectly illustrates our professional and responsive approach to HVAC ventilation services.
When the ventilation goes down, every minute matters
It was 8:45 AM on a Tuesday morning when a building manager located on Boulevard Industriel in Laval called us in a panic. The central ventilation of his HVAC system had suddenly shut down, cutting off an entire office floor from fresh air. In the middle of a summer heatwave, with the indoor temperature already above 30°C, the situation was about to escalate quickly.
At AirGreen, we understand that in professional environments, thermal comfort is essential for productivity and employee health. So we immediately dispatched our rapid response team for an on-site technical inspection within the hour of the call.
Technical diagnosis: failure of a ventilation motor
On-site, our certified technicians performed a full system evaluation. The diagnosis was clear: the central fan motor of the existing system (a 15-year-old Lennox model) had burned out. The cause? A dangerous buildup of dust in the turbine, lack of regular maintenance, and natural wear and tear over time.
Instead of suggesting a simple motor replacement — a temporary fix — we recommended a complete upgrade of the ventilation system, more efficient, quieter, and above all eligible for available government grants.
Proposed solution: a Zephyr Modular Ventilation System – 5 Tons
We installed a Zephyr modular ventilation system paired with a 5-ton air handling unit with a variable-speed ECM motor. This system, compliant with the latest energy efficiency requirements, offers several key benefits:
-
Even air distribution in partitioned office spaces
-
Energy consumption reduced by up to 25%
-
Simplified maintenance thanks to modular design
-
Compatibility with existing smart thermostats
Installation details in Laval: efficiency, speed, and precision
The replacement was completed the following morning, outside of business hours, to avoid any service interruptions. The AirGreen team coordinated every step with the building manager:
-
Dismantling of the old system without damaging existing ductwork
-
Installation of the new Zephyr rooftop air handler, including structural adjustments
-
Connection to the existing ventilation ducts and calibration of optimal airflow per room
-
Full commissioning and real-time performance testing
In just 7 hours, the new system was fully operational. Temperature and air quality were stabilized before employees returned to work.
Why this installation is a model for successful intervention
This job highlights several key elements of our approach:
-
Responsiveness: on-site response within 60 minutes in Laval
-
Transparency: clear explanations of all available options and their implications
-
Energy performance: the new system meets CEE efficiency standards
-
Applicable grant: the client qualified for a $1,800 LogisVert credit, offered by Hydro-Québec for commercial HVAC efficiency upgrades
Maintenance and recommendations for commercial buildings
We also set up a biannual preventative maintenance plan to avoid future breakdowns. Too often, ventilation systems are overlooked, which leads to:
-
Unnecessary energy costs
-
Premature component wear
-
Degraded indoor air quality, with potential health risks
At AirGreen, we systematically recommend:
-
Full duct and filter cleaning twice a year
-
Motor and bearing inspections at every seasonal change
-
Thermostat calibration to maximize energy savings
What our clients are saying
The Laval office building manager sent us this feedback:
“We were blown away by how quickly the AirGreen team responded. In the middle of a crisis, they diagnosed the issue, offered a real solution, and had it installed in record time. Our employees didn’t even notice the change — except that the office finally felt great again!”
AirGreen: your trusted HVAC ventilation partner in Laval and Greater Montreal
For over 10 years, we’ve been serving commercial buildings in Laval, Montreal, Longueuil, the North Shore, and the South Shore, ensuring comfort and safety for all occupants. Whether it’s a new installation, a system upgrade, or an emergency like this one, our team is ready to deliver with professionalism, expertise, and speed.
Every job we take on is a chance to showcase our know-how. This installation in Laval is yet another example: we don’t just fix or replace — we improve long-term indoor working conditions.
In summary
-
Location: Commercial office in Laval
-
Problem: Ventilation failure
-
Solution: Zephyr Modular System – 5 Tons
-
Intervention time: Less than 24 hours from call to completed install
-
Result: Comfort restored, system modernized, grant received
Contact us
Are you a building manager, property owner, or technical director in Laval, Montreal, or anywhere in Greater Montreal? Facing a ventilation issue or looking to modernize your HVAC system? Contact our team at AirGreen for fast, reliable, and energy-efficient service.