A rapid and methodical intervention by AirGreen on the North Shore
At AirGreen , we are regularly called for emergency interventions on central heat pump systems throughout the greater Montreal area. Recently, our team traveled to Blainville , on the North Shore , to diagnose and repair a Goodman central heat pump installed on the exterior wall of a single-family residence. The client had noticed that their system was no longer producing adequate heat despite the compressor apparently operating normally.
The reported problem: loss of power and compressor icing
When our technician arrived, the Goodman heat pump was exhibiting two main symptoms:
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A lack of heating performance , the interior temperature not exceeding 19°C despite several hours of operation;
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A visible ice buildup on the base of the outdoor compressor, suggesting a defrost cycle problem.
These clues pointed our diagnosis towards a temperature sensor failure or a control board anomaly , two common causes on central systems used intensively in Quebec winters.
Steps of the AirGreen diagnosis
Our technicians carried out a complete diagnosis in four stages , in accordance with our AirGreen procedures:
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Checking the electrical circuit : checking the supply voltages and control signals from the thermostat.
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Measuring the pressure of R-410A refrigerant to check the thermodynamic balance of the system.
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Inspection of the defrost module and the evaporator and room temperature sensors.
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Full operating cycle analysis to observe the behavior of the compressor, fan and reversing valve.
Diagnosis confirmed: faulty temperature sensor
After a series of comparative tests, the cause of the problem was clearly identified: the outdoor coil temperature sensor was sending an erroneous reading, preventing the automatic defrost sequence. As a result, frost was accumulating, blocking heat exchange and reducing the overall performance of the system.
System repair and update
Our technicians carried out:
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Replacement of the temperature sensor with an original Goodman model;
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Checking the defrost board and resetting the microprocessor;
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Complete cleaning of the outdoor coil and housing to remove all traces of ice and debris;
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Complete defrost cycle test , confirming return to normal performance.
The compressor resumed smooth operation and the indoor blowing temperature quickly reached the optimal level.
Results: restored comfort and optimized energy efficiency
As soon as the intervention was completed, the residence returned to a stable and uniform temperature . The client was impressed by the accuracy of the diagnosis and the clarity of our explanations. At AirGreen, we always ensure that each client understands the real cause of the breakdown and the solution applied , in order to avoid any future recurrence.
Preventive maintenance recommended by AirGreen
Our experts took the opportunity to recommend some good maintenance practices:
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Clean outdoor coils twice a year;
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Replace the internal filter every three months, especially during periods of intensive heating;
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Schedule annual AirGreen maintenance including checking the defrost cycle and measuring pressures;
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Make sure nothing is obstructing the airflow around the compressor (snow, leaves, debris).
AirGreen: the benchmark in HVAC system repair in Blainville and throughout the North Shore
This intervention clearly illustrates our commitment to quality service and the durability of HVAC systems . We work daily on equipment from Goodman, Lennox, Trane, York, Carrier, Gree, Midea, and many others , throughout the metropolitan area: Montreal, Laval, Longueuil, the North Shore and the South Shore .
Our strengths:
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Fast and accurate diagnosis , supported by professional instruments;
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Certified replacement parts ;
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Qualified and experienced technicians ;
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Transparent and courteous customer service .
An exemplary repair in Blainville
Thanks to our intervention, the Goodman central heat pump has regained its full efficiency, and the client now enjoys optimal comfort while reducing their energy consumption. At AirGreen, we don't just repair systems: we ensure their longevity and peak performance for years to come.