A cramped balcony, a temperamental heat pump: AirGreen intervention in Blainville
At AirGreen , we know that HVAC systems installed in tight spaces, like apartment balconies, require special attention. Recently, we were called to Blainville , on Montreal's North Shore , to diagnose a Goodman wall-mounted heat pump that was no longer producing heat or cold, despite an operating indicator light being on.
The customer explained that for the past few days, the outdoor compressor hadn't started. Upon examining the unit, he noticed it looked clean and well-maintained—except that a metal barbecue grill was resting on top of the condenser. A seemingly insignificant detail, but one that would prove to be revealing.
Diagnosis: a clogged appliance and an overloaded compressor
Our technicians conducted a complete system analysis . After securing the environment, we performed:
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An electrical check of the compressor and the starting relay.
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A pressure test of R-410A refrigerant , revealing a slight static overpressure.
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An inspection of the airflow around the condenser , whose upper grille was partially obstructed.
The presence of a metal object on top of the unit—in this case, a barbecue brush—had blocked heat dissipation . This blockage had caused the compressor to temporarily overheat , triggering the internal thermal protection.
Rapid intervention and restoration of service
After removing the object and inspecting the heat exchanger, we cleaned the condenser fins using a biodegradable product and a low-pressure rinse .
We then have:
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Checked the integrity of the condenser fan and replaced a slightly swollen start capacitor .
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Reset the electronic card and restarted a complete air conditioning cycle .
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Checked discharge and return temperatures to confirm optimal performance.
Within two hours, the Goodman heat pump was operating at full efficiency again, providing stable and quiet cooling .
Tips and prevention: extending the life of your heat pump
Our experts took advantage of the visit to remind the customer of some good maintenance practices , essential for units installed on balconies or terraces:
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Never place objects on the condenser , even temporarily. This blocks the vertical airflow.
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Clean the condenser fins in spring and fall using a gentle jet of water.
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Clear plants and flower pots around the unit to prevent heat buildup.
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Schedule an annual AirGreen maintenance , including checking the compressor, fan and refrigeration circuit.
A reliable device, a lasting repair
Thanks to this targeted and methodical intervention , the Goodman system returned to normal operation without requiring costly replacement. This type of incident, which is common in outdoor balcony installations, highlights the importance of regular monitoring and simple preventive measures.
Our technicians also carried out an additional check of the indoor module , confirming good communication between the two units. The customer regained his indoor comfort in less than a day, while avoiding a more serious breakdown.
In summary:
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Brand: Goodman
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Type: Wall-mounted heat pump (mini-split)
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Location: Blainville (North Shore)
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Problem: Blocked heat dissipation causing compressor to overheat
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Solution: Complete cleaning, capacitor replacement, system reset
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Result: Stable, silent and fully functional system
At AirGreen , every service call is handled with rigor and efficiency. Whether in Montreal , Laval , Longueuil , on the North Shore or the South Shore , we respond quickly to ensure the reliability and performance of your Goodman HVAC systems, whatever their configuration.