Maximizing the lifespan of your HVAC equipment while reducing your costs—that’s one of the many promises delivered by AirGreen, as illustrated by this remarkable intervention in Ahuntsic. Thanks to meticulous preventive maintenance on his heating and air conditioning system, this residential building owner was able to avoid a major breakdown and save over $10,000. Here is the detailed account of an exemplary HVAC maintenance service carried out by our team, and the valuable lessons drawn by property managers throughout Montréal, Laval, Longueuil, the North Shore, and the South Shore.
A rental building in Ahuntsic requiring precise HVAC expertise
This client, owner of an eight-unit building in the Ahuntsic area, reached out to us as part of our comprehensive HVAC maintenance service, designed for property managers focused on energy performance and tenant comfort. The building was equipped with two central HVAC systems, including a 5-ton Lennox central heat pump system that had been installed nearly ten years ago.
Initial assessment: subtle yet critical warning signs
During our initial inspection, our technician identified several signs of potential malfunction:
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Excessive dust buildup on the evaporator.
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Significant clogging in the ventilation ducts.
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Loosened belt on the ventilation motor.
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Minor leak detected on a refrigerant line (R-410A).
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Calibration issue on the centralized programmable thermostat.
Although these issues hadn’t yet caused system failure, their accumulation could have led to a complete HVAC system shutdown, right in the middle of summer.
A fast and strategic intervention
Our team immediately scheduled a complete two-day maintenance operation, coordinating with the client to minimize service interruptions:
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Thorough cleaning of the evaporator and condenser using eco-friendly specialized products.
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Complete ductwork disinfection using a negative pressure vacuum system.
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Belt replacement and motor lubrication.
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Partial recharge of the R-410A refrigerant after detecting and sealing the leak.
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Reprogramming and updating of the thermostat, including a new energy-saving logic.
This proactive approach helped avoid a critical failure that would have required the complete replacement of the compressor, along with potential emergency repair costs estimated at over $10,000, including tenant claims related to thermal discomfort.
The direct impact of preventive maintenance: savings and longevity
The client not only avoided a major expense, but also:
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Extended the HVAC system’s lifespan by 5 to 7 years.
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Reduced electricity consumption by 18% in the first month.
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Achieved consistent indoor comfort throughout all units.
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Prevented possible tenant complaints, improving tenant retention.
At AirGreen, we emphasize that regular HVAC maintenance isn’t a cost—it’s an investment—with proof to back it up.
Why preventive maintenance is critical in Montréal and surrounding areas
The extreme climate conditions in Greater Montréal—from -30°C in winter to over 35°C in summer—put enormous pressure on heating and air conditioning systems. This variability can accelerate internal component wear, cause duct blockages, and reduce the efficiency of thermal regulation systems.
That’s why we strongly recommend at minimum:
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Spring maintenance for the air conditioning system (before peak season).
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Fall maintenance for heating systems, including heat pumps.
Testimonial from the Ahuntsic client
“Since AirGreen took over the maintenance of my building, I sleep much better. They found a problem I would’ve never seen coming. Without their quick intervention, I would’ve had to replace the whole system during a heatwave. They saved my tenants… and my budget.”
– Mr. Bélanger, building owner in Ahuntsic
What AirGreen offers in its HVAC maintenance service
Our package includes:
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Full inspection of all components (mechanical, electrical, electronic).
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Cleaning of indoor and outdoor coils.
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Duct and vent maintenance.
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Refrigerant verification and refill if needed.
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Smart thermostat programming.
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Technical report with before/after photos.
This service is tailored to all types of buildings: residential, commercial, or multi-unit, and personalized based on your system’s specific needs.
Our work throughout the region: Montréal, Laval, Longueuil, North Shore, and South Shore
This case in Ahuntsic is far from unique. We’re regularly called for similar maintenance interventions in:
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Montréal: Outremont, Rosemont, Plateau, Verdun.
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Laval: Chomedey, Sainte-Rose, Fabreville.
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Longueuil: Vieux-Longueuil, Saint-Hubert.
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North Shore: Terrebonne, Repentigny, Blainville.
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South Shore: Brossard, Saint-Lambert, Candiac.
Each situation is different, but a preventive approach always pays off.
Practical advice for building owners
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Never wait for a breakdown before having your equipment inspected.
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Set up an annual maintenance contract with a trusted company.
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Choose local experts familiar with regional climate conditions.
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Request a detailed report after each visit, to document your system’s condition (useful for insurance or resale).
Why choose AirGreen for your HVAC system maintenance
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Recognized technical expertise throughout Greater Montréal.
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Certified technicians, trained on top brands (Lennox, Trane, Gree, Fujitsu, Bosch, Goodman…).
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A transparent and educational approach, explaining each action taken.
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Fast service, even during peak seasons.
At AirGreen, we believe every client deserves a high-performing, durable, and energy-efficient HVAC system. Maintenance is the key—and our results prove it, year after year.