A service call in the middle of winter in Saint-Laurent
At AirGreen , we know that a heat pump breakdown in the winter can quickly become a real headache. That's exactly what happened to a Saint-Laurent customer, whose Goodman central heat pump stopped providing the necessary heat on a frigid January morning. Our team of certified technicians was dispatched to the site to diagnose and repair the system, restoring comfort as quickly as possible.
The context of the intervention
The Goodman outdoor unit, installed on the roof of a small commercial building, was suffering from the effects of extreme cold and ice buildup . The customer contacted us after noticing that the system was operating without ever reaching the desired indoor temperature, while also producing unusual compressor noise .
Diagnosis and complete inspection
Upon our arrival, our technicians carried out a thorough inspection :
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Checking the automatic defrosting , which was no longer working correctly.
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Checking the outdoor fan , whose blades were partially blocked by ice.
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Measurement of refrigerant circuit pressures using electronic pressure gauges.
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Inspection of wiring and control board for any electrical anomalies.
Diagnostics revealed a faulty defrost board , preventing the system from switching to defrost mode when the temperature dropped below -10°C.
Repair and recommissioning
After validating the issue, our team replaced the original Goodman defrost board and then tested the entire operating cycle. We also:
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Cleaned the condenser fins.
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Checked the electrical connections and tightened the terminal blocks.
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Checked the correct operation of the automatic defrost mode .
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Readjusted the R410A refrigerant charge, slightly below optimal values.
Once the repair was completed, the Goodman central heat pump resumed smooth and quiet operation, providing stable heating performance despite the sub-zero temperatures.
Result: comfort and efficiency restored
The customer immediately noticed a noticeable improvement in indoor comfort . The system was once again maintaining the programmed temperature, while reducing extended cycles and power consumption.
This repair demonstrates the importance of regular maintenance of HVAC systems , especially during the winter season in Quebec. Defrost boards and temperature sensors are often the first components affected by extreme cold.
Our advice to avoid this type of breakdown
To extend the life of your central heat pump, we recommend:
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A complete pre-winter service , including cleaning the condenser and checking the defrost cycle.
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An annual electrical inspection , to detect any premature wear of components.
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Defrost monitoring : if ice builds up on the condenser without melting, this requires rapid intervention.
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A minimum clearance of 30 cm around the outdoor unit , to ensure good air circulation.
AirGreen expertise at your service
At AirGreen , we operate throughout Greater Montreal , including Laval , Longueuil , the North Shore and the South Shore . Whether it's for a Goodman heat pump repair , preventative maintenance , or a complete replacement , our team offers professional, fast and guaranteed service.
Our priority: ensuring the comfort, safety and energy performance of your HVAC system all year round.