A noisy outdoor condenser and a suspicious leak
During a service call in Boucherville , a customer reported an abnormal noise coming from the outdoor unit of his Gree wall-mounted heat pump . The unit, installed on a metal wall bracket on the second floor, seemed to vibrate strongly and exhibit a loss of efficiency in air conditioning mode .
At AirGreen , we understand that this type of symptom can be caused by a variety of factors: loose fasteners, refrigerant leaks, or an overloaded compressor. Our team responded quickly to diagnose and correct the situation before the damage could worsen.
Inspection and diagnosis
After turning off the power and securing the ladder, our certified technician conducted a complete inspection of the condenser. Initial findings:
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The wall brackets vibrated strongly under the load of the compressor.
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A slight oil seepage was visible at the fluid line fitting.
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The refrigerant gas level was lower than normal, indicating a slow leak .
Detection using an electronic leak detector confirmed the presence of a microleak at the flare connection —a relatively common problem when connections are not tightened after several thermal cycles.
Technical intervention
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Completely tighten the flare connections using a calibrated torque wrench.
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Drain the circuit and pressure test with nitrogen for 30 minutes to ensure leak-tightness.
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Recharge with R410A refrigerant according to Gree manufacturer's specifications.
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Anti-vibration reinstallation of the wall bracket with insulating rubber pads to reduce noise transmission to the stone facade.
Result after intervention
Final tests demonstrated perfect compressor stability and balanced pressure . Noise was reduced by more than 60% , and the blowing temperature returned to 12.2°C , proof that the heat pump was regaining its original efficiency.
The client particularly appreciated our attention to detail: not only was the leak eliminated, but the mechanical durability of the installation was also improved.
Maintenance recommendations
To avoid this type of problem, we always advise our customers to:
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Have the refrigerant connections checked every two years,
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Clean the condenser at the beginning of each summer season,
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Monitor for unusual vibrations or noises,
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Schedule preventative maintenance with an AirGreen certified technician.
AirGreen Expertise in Boucherville and Beyond
This intervention once again demonstrates the rigor of our teams and our commitment to providing a complete and sustainable HVAC service . Whether in Montreal, Laval, Longueuil, the North Shore or the South Shore , we ensure to restore the performance and peace of mind of each client.
At AirGreen , we believe that a well-maintained, properly installed, and properly calibrated heat pump can operate efficiently for over 15 years . And every repair we perform is designed to ensure this longevity.