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Réparation d’une thermopompe centrale Goodman à Sainte-Julie
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Repair of a Goodman central heat pump in Sainte-Julie

A central heat pump in distress: a service call in Sainte-Julie

At AirGreen , we regularly receive calls for HVAC systems that struggle to deliver the expected comfort, especially as the transitional seasons approach. This was the case for a residence in Sainte-Julie , on Montreal's South Shore , where the client's Goodman central heat pump stopped producing cold air after a few minutes of operation. A common problem, but one that requires a rigorous approach to avoid complete compressor failure.

Diagnosis: When overheating threatens the heart of the system

Upon our arrival, our technician carried out a complete inspection of the outdoor condenser , which was securely mounted on concrete supports against a plastered wall. The unit, although visually well maintained, was nevertheless showing a clear sign of mechanical distress : the outdoor fan was rotating intermittently, causing a rapid increase in pressure in the refrigerant circuit.

Initial electrical tests revealed a weakened capacitor , unable to provide the necessary starting current for the fan. In addition, slight oxidation was present on the electrical terminals exposed to the elements, a common occurrence in outdoor installations in Quebec.

Diagnostic steps:

  1. Checking the voltage at the power terminal.

  2. Fan motor continuity check .

  3. Testing the start capacitor with a capacitance multimeter.

  4. Inspection of refrigeration lines for any signs of leakage or crushing.

  5. Measuring pressures to confirm compressor health.

The result: the Goodman compressor was still in good condition, but the crankcase temperature showed that it had undergone several overheating cycles. Without prompt intervention, it would have risked major failure.

Repair: Complete overhaul of the heat pump

The first step was to replace the starting capacitor . We installed a genuine Goodman part , which was perfectly compatible with the system's power and voltage. After power was restored, the fan resumed its normal cycle, ensuring optimal cooling of the condenser .

Then we have:

  • Cleaned the top grille and condenser fins using a gentle jet to maximize heat dissipation.

  • Applied a dielectric sealant to electrical connections to prevent future corrosion.

  • Reorganized the exterior wiring , adding additional weather protection (insulating sheathing and UV-resistant fasteners).

The client was immediately impressed by the return to a stable and quiet temperature inside the house. After a full test cycle, the refrigeration pressures and electrical currents stabilized within the optimal ranges recommended by Goodman.

AirGreen expertise: beyond repair

A simple capacitor failure may seem trivial, but it often reveals an underlying ventilation or periodic maintenance issue . Our technicians took the time to explain to the customer the warning signs to look out for:

  • An unusual noise when starting.

  • A temperature variation between cycles.

  • Excessive heat buildup on the condenser.

  • A sudden increase in the electricity bill .

We also recommended an annual preventative inspection , including cleaning the indoor coil , checking the airflow in the ducts, and monitoring the refrigerant level (R-410A, in this case).

Result: restored comfort and optimized performance

Thanks to this rapid intervention, the Goodman central heat pump in this Sainte-Julie residence is now operating at full efficiency. The client once again benefits from consistent, energy-efficient comfort , while extending the life of their HVAC system.

In summary:

  • Equipment type: Central heat pump

  • Brand: Goodman

  • Problem: Intermittent outdoor fan caused by faulty capacitor

  • Solution: Condenser replacement, condenser cleaning, electrical upgrade

  • Result: Restored cooling, increased reliability, immediate comfort

Why trust AirGreen?

At AirGreen , we put our technical expertise and professional rigor at the service of residential owners in Montreal, Laval, Longueuil, the North Shore and the South Shore . Our interventions are never limited to a simple repair: they aim to optimize the overall performance of the HVAC system and prevent future breakdowns .

Every service call is an opportunity for us to bring a vital piece of equipment back to life while ensuring customer peace of mind and energy efficiency —two pillars at the heart of our mission at AirGreen.