A typical day of intervention by AirGreen
On a hot afternoon in Sainte-Dorothée , a customer contacted us about a performance issue with their Goodman wall-mounted air conditioner . The unit was no longer able to adequately cool the room, and the indoor temperature remained uncomfortably high despite a thermostat set at 22°C. At AirGreen , we know how essential stable thermal comfort is during Quebec summers. We quickly dispatched one of our certified technicians to the site to diagnose and correct the situation.
Accurate diagnosis thanks to professional tools
Upon arrival, our technician immediately took out his infrared thermometer to measure the air temperature at the outlet of the wall unit. The reading indicated 17.8 °C , a figure which, although indicating partial operation, clearly showed that the unit was not producing the amount of cold expected for a Goodman system in good condition.
We then carried out a complete diagnosis :
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Check air filter : slightly clogged with dust.
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Inspection of the evaporator coil : dirty, limiting heat exchange.
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R-410A refrigerant level check: pressure below normal.
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Compressor start capacitor check: reading slightly outside manufacturer's tolerances.
A repair in several methodical stages
To restore the system to optimal condition, we undertook a series of structured interventions:
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Thorough cleaning of the inner coil using a specialized biodegradable cleaner, ensuring efficient heat transfer.
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Replace the capacitor with a genuine Goodman compatible part.
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Recharge of R-410A refrigerant according to the manufacturer's exact specifications.
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Final performance test : outlet air temperature after repair = 10.9°C , a deviation of more than 6°C from the initial measurement.
This result confirms perfect operation of the system and an immediate return to optimal comfort for the customer.
The AirGreen difference: rigor, transparency and efficiency
This type of intervention perfectly illustrates the AirGreen philosophy : each service call is treated as a precision mission. Our technicians use professional measuring instruments, follow rigorous diagnostic protocols, and take the time to explain each step to the customer.
At AirGreen , we believe that a wall-mounted air conditioner, even a robust model like those from Goodman , deserves careful maintenance and specialized expertise to deliver its full performance throughout its lifespan.
Preventive maintenance: a gesture that extends the life of your device
We also took the opportunity to advise the client on some good maintenance practices :
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Clean air filters every 4 to 6 weeks during the summer season.
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Check for free air circulation around the indoor and outdoor unit.
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Schedule annual maintenance by a certified technician to clean coils, check refrigerant levels, and inspect electrical components.
These simple actions help reduce energy consumption , avoid costly breakdowns and extend the life of the air conditioner.
A satisfied customer and a system ready for summer
After our work, the customer immediately felt the difference: a uniform temperature, quiet operation, and perfectly fresh air. All backed by our AirGreen warranty on parts and labor.
Whether you are in Montreal , Laval , Longueuil , on the North Shore or the South Shore , our team of HVAC specialists is ready to intervene quickly to repair your Goodman wall-mounted air conditioner or any other brand.
AirGreen is trust, expertise and lasting comfort — everywhere in Greater Montreal.
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