A poorly executed HVAC project can have disastrous consequences. This real story from a commercial building in Laval perfectly illustrates why it’s crucial to call on trusted experts for your commercial HVAC installation. At AirGreen, we were urgently contacted to fix a situation that had brought an entire business to a standstill for several days. Here’s a detailed account of this service call, highlighting the risks of improper installation and the concrete solutions we implemented to get the business back on track.
When a bad HVAC installation turns into an operational nightmare
In a commercial building located in Laval, a food distribution company contacted us in a panic: their heating and air conditioning system had completely broken down — in the middle of winter — leaving employees in an unheated space with inadequate ventilation and no working air conditioning for their temperature-controlled storage zones.
What seemed like a simple technical failure quickly turned out to be a case of poor HVAC installation, carried out just a few months earlier by an unqualified contractor. The result: a paralyzed commercial building, significant financial losses, uncomfortable staff, and a heightened risk of damage to temperature-sensitive products.
Initial diagnosis: a cascade of critical errors
When we arrived on-site, our team of commercial HVAC experts in Laval performed a full diagnostic. We quickly identified several major issues:
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Oversized system: an overpowered unit for the space, causing frequent short cycling and premature wear.
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Poorly sized ductwork: some areas of the building were poorly served, while others received too much airflow.
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Non-compliant electrical connections: improperly wired, posing a serious safety hazard.
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Improper drainage installation, leading to leaks and moisture in the ceilings.
These technical mistakes had made the system not only ineffective but downright dangerous.
Our custom solutions for a quick relaunch
Understanding the urgency, we deployed two full teams of installers and specialized HVAC technicians. Working closely with the building manager, we developed an action plan within 48 hours.
Step 1: Full removal of the defective system
We began with the safe dismantling of the faulty system, adhering to all electrical and mechanical codes. This was crucial to avoid further damage to the building.
Step 2: Choosing the right equipment for the job
After analyzing the building’s actual energy requirements, we recommended installing a central rooftop system from Goodman, model GPG14M, a combination heat pump, ventilation, and gas heating system, with a capacity of 10 tons. This model is known for its reliability and performance in Quebec’s harsh winter conditions, and it was a perfect fit for the volume that needed to be covered.
Step 3: Complete redesign of the ventilation ducts
Our technicians redesigned the air distribution ductwork to ensure balanced coverage in all zones, including refrigerated storage areas. We also installed enhanced insulation to limit heat loss.
Step 4: Reprogramming smart thermostats
We installed smart connected thermostats to allow remote control and better zoning within the building. This system provides optimized energy efficiency and improved comfort for the employees.
Result: business back up and running in under a week
Thanks to our responsiveness and expertise, we had the entire system up and running in six business days. The company was able to resume normal operations, safely. On top of that, they now benefit from an energy-efficient system, eligible for the Hydro-Québec LogisVert grant, totaling $4,200.
The takeaway: never cut corners with HVAC
This story underscores a critical truth: commercial HVAC installation is not something you can improvise. Even the slightest compromise in workmanship or equipment can have major consequences for your business.
Common mistakes to avoid:
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Choosing a contractor without experience in commercial HVAC
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Installing systems that aren’t suited to the space or business type
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Skipping post-installation compliance inspections
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Neglecting preventive maintenance programs
At AirGreen, we combine precise engineering, qualified labor, and real-world experience to deliver HVAC solutions that are safe, reliable, and built to last.
Why choose AirGreen for your commercial HVAC projects?
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Proven expertise in the commercial sector across Montréal, Laval, Longueuil, North Shore, and South Shore
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Rapid response, even in emergency situations
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Installation of reliable, top-brand systems (Goodman, Trane, Lennox, Bosch…)
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Eligibility for government grants
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Commitment to energy efficiency and safety standards
Client testimonial
“We nearly lost thousands of dollars in perishable goods because of a poorly installed system. AirGreen took over and handled everything with remarkable professionalism. Their speed and expertise were truly impressive.”
— Operations Manager, Food Distribution Company, Laval
Final word: HVAC installation is not something to leave to chance
If you operate a business in Montréal, Laval, Longueuil, on the North Shore or South Shore, and want to avoid unpleasant surprises, trust AirGreen. Our know-how guarantees you a tailored, durable solution that meets the highest standards of the commercial HVAC industry.
Contact us today for a quick and personalized quote.