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Réparation d’une thermopompe centrale Goodman à Repentigny
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Repair of a Goodman central heat pump in Repentigny

Rapid intervention and complete restart by AirGreen

At AirGreen , we were recently called in for a service call on a Goodman central heat pump in a residence in Repentigny , on the North Shore of Montreal . The customer had noticed for a few days that his system was no longer producing enough cold air, despite the outdoor fan operating normally.

Background to the breakdown

The Goodman central heat pump, installed approximately eight years ago, supplied heat to a duct system connected to an indoor electric furnace. The customer reported:

  • a gradual decrease in the flow of cold air ;

  • an intermittent metallic noise coming from the outdoor unit;

  • and a sudden increase in the electricity bill .

These symptoms immediately pointed us towards a possible compressor failure or refrigerant pressure problem .

Complete on-site diagnosis

Upon our arrival, our certified technicians carried out a series of checks:

  1. Visual inspection of the outdoor unit: accumulation of leaves and branches around the condenser, which may restrict ventilation.

  2. Refrigeration pressure test : refrigerant level 30% lower than the standard provided by Goodman.

  3. Compressor current measurement : value slightly higher than expected, sign of abnormal effort due to a lack of refrigerant .

  4. Electrical analysis : weakened starting capacitor (reading at 28 µF instead of 35 µF).

The final diagnosis confirmed two combined causes: a minor leak on a liquid line connection and a faulty capacitor , reducing the overall efficiency of the system.

Step 1: Repair the refrigeration circuit

Our technicians first sealed the leak:

  • replacement of the flare fitting with a reinforced model in brazed copper;

  • nitrogen leak test at 400 psi to ensure seal strength;

  • complete vacuum draw to eliminate all moisture in the circuit;

  • precise refill in R410A , in accordance with the device nameplate.

This step helped stabilize the system pressure and prevent any oil from returning to the compressor.

Step 2: Replacing the Start Capacitor

The worn capacitor was replaced with a genuine Goodman part of the same capacity. This component plays a key role in the smooth startup of the compressor and fan. A weakened capacitor often leads to overheating and difficult restarting , which perfectly matched the symptoms described.

After replacement, the starting current returned to a normal value, reducing the electrical stress on the motor.

Step 3: Cleaning and Preventive Maintenance

Once the repairs were completed, we carried out a complete cleaning of the outdoor condenser :

  • removal of vegetation and debris around the unit;

  • low pressure coil washing with biodegradable degreaser;

  • checking the condensate drainage.

Inside, the duct system filter has been replaced with a high-flow HEPA model, optimizing air circulation and indoor air quality.

Results after intervention

After the system was fully operational, the results were immediate:

  • blowing temperature measured at 16°C , i.e. optimal performance for the summer season;

  • compressor operating at reduced noise level;

  • standardized power consumption after verification of the complete cycle.

The client found consistent interior comfort , with cold and stable air distribution in all rooms.

Advice given to the client

Our technicians have recommended some good maintenance practices :

  • clear at least 60 cm of free space around the condenser;

  • clean the outdoor coil twice a year ;

  • replace the air filter every three months during the summer period;

  • schedule an annual AirGreen inspection , including checking compressor pressures and consumption.

Why Choose AirGreen for Your HVAC Repairs

By entrusting its heat pump to AirGreen, the Repentigny customer benefited from:

  • an accurate diagnosis in less than an hour ;

  • original replacement parts ;

  • a safe intervention that complies with CSA and RBQ standards ;

  • post-repair monitoring to ensure system stability in the following weeks.

At AirGreen, every service call is handled with rigor and transparency. Our goal: to maximize the lifespan of your HVAC equipment and ensure lasting comfort, summer and winter .

A Goodman heat pump refurbished for several years

Thanks to this targeted intervention, the Goodman central heat pump in this Repentigny residence is now operating at full capacity. The system offers restored energy efficiency and complete peace of mind to the homeowner, ready to face the summer heat.

AirGreen , your trusted partner for the repair, maintenance and installation of HVAC systems in Montreal, Laval, Longueuil, the North Shore and the South Shore .