When a power outage threatens the comfort of an entire home
At AirGreen , we are regularly called upon to intervene on central HVAC systems whose performance drops suddenly. This was the case in Sainte-Julie , on the South Shore of Montreal , where a family contacted us after noticing that their Goodman central heat pump was no longer starting despite several attempts to restart it via the thermostat.
Initial diagnosis: a completely inert outdoor unit
Upon our arrival, we carried out a complete inspection of the outdoor condenser , which was installed on a metal support and connected to a disconnect box fixed to the wall. The owner explained that the system had worked perfectly all summer, but that one morning, he noticed that the unit was no longer producing any noise .
After checking the power supply, our technician quickly identified a lack of voltage at the output of the disconnect box . This box, essential for safety and maintenance, is often overlooked, but it plays a key role in protecting the compressor and electrical circuits .
Checking the electrical circuit: the culprit is often hidden in the details
We opened the disconnect box and discovered a blown fuse , likely caused by a surge or transient short circuit during a recent thunderstorm. After replacing the fuses and performing a startup amperage measurement, we were able to confirm that:
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The supply voltage had become stable again (240 V).
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The compressor and condenser fan started normally.
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The current drawn corresponded to the specifications of the manufacturer Goodman.
Thorough inspection: prevention first
Before leaving the premises, our team took the time to perform a complete preventive inspection of the system. We checked:
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The condition of the contactor and capacitors (often the cause of random failures).
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Refrigerant lines and their insulation .
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The flow of condensate inside the evaporator coil.
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Cleanliness of the condensing coil to maximize heat exchange.
This comprehensive approach ensures that the customer will not experience another outage in the short term.
Result: a fully operational system and a reassured customer
Thanks to a quick and methodical intervention, the Goodman central heat pump was back to full performance. Indoor comfort was restored in less than an hour, and the client noticed a significant improvement in the stability of the ambient temperature throughout the house.
We also recommended annual preventative maintenance to the customer, to check refrigerant pressure, compressor efficiency and coil cleanliness before each heating and cooling season.
What this service call illustrates
Every intervention, no matter how simple it may seem, highlights the importance of accurate diagnosis and regular maintenance . At AirGreen, we know that a minor electrical fault can mask more serious problems—and that rigorous intervention, carried out by certified technicians, ensures the longevity and optimal performance of HVAC systems.
Why use AirGreen for your HVAC system in Sainte-Julie and throughout the South Shore?
Our teams operate every day in Montreal, Laval, Longueuil, the North Shore and the South Shore , whether for central heat pump repairs , seasonal maintenance , or complete replacements . By choosing AirGreen, you benefit from:
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A transparent and unsurprising diagnosis .
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Fast service , even during periods of high demand.
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After-service support to ensure the long-term reliability of your system.
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Certified and authorized technicians for the most reputable brands (Goodman, Lennox, Trane, Midea, Fujitsu, etc.).
In conclusion
This Goodman central heat pump repair in Sainte-Julie is a reminder that even a seemingly trivial outage can reveal critical electrical weaknesses. Thanks to AirGreen's expertise, the customer regained lasting comfort and much-needed peace of mind.
AirGreen – your trusted partner for all your heating, ventilation and air conditioning needs across Greater Montreal.