A typical service call in the middle of Montreal summer
At AirGreen , we often receive urgent calls during hot weather, especially when a Goodman system stops providing the air conditioning needed to keep a home comfortable. Recently, our team traveled to Lachine , a typical residential neighborhood in Montreal, to work on two Goodman wall units installed side by side on the rear facade of a brick house.
The customer reported a performance issue with one of the two outdoor compressors . The right unit, according to him, was no longer blowing cold air inside, despite apparently being turned on. When pointing at it, he mentioned hearing an irregular noise and noticed a slight buildup of ice around the lines.
Precise diagnosis on the ground
Upon arrival, we conducted a complete visual inspection of both outdoor units. Both Goodman compressors were securely mounted on wall brackets, well ventilated, but located in a partially shaded area near a balcony and a small garden. The defective unit had partial frost on the return line and reduced airflow .
Our technicians then:
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Measured the pressure of the R-410A refrigerant , finding a level below the standard.
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Checked the cleanliness of the heat exchanger , which showed a slight accumulation of dust.
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Inspected the electrical connections and control board.
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Tested the fan and compressor , both functional but under uneven stress.
The final diagnosis revealed a minor leak on the suction line connection , probably due to slight mechanical vibration over the years.
Repair carried out
To resolve the issue, our AirGreen team took the following steps:
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Welding of the connection and resealing of the refrigeration circuit.
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Complete vacuuming of the system to remove all traces of moisture and air.
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R-410A gas recharge according to Goodman manufacturer's specifications.
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Verification of operating pressures and calibration of blowing temperature.
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Complete cleaning of the coils and interior filters to optimize energy efficiency.
Once the repair was completed, the unit resumed stable operation with balanced pressure and an outlet temperature that met Goodman performance standards. The customer immediately felt the difference: the interior part cooled down in less than 15 minutes.
An example of AirGreen reliability
This type of intervention perfectly illustrates our approach: a rigorous diagnosis , lasting repairs and transparent communication with the client. In Lachine, as elsewhere in Greater Montreal, we always insist on:
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The importance of preventative maintenance : annual cleaning and pressure checks prevent 80% of summer breakdowns.
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Compliance with good installation practices : adequate clearance around outdoor units ensures optimal heat dissipation.
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Choosing original parts to preserve warranty and energy efficiency.
Recommendations for the future
We recommended to the client:
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Schedule an annual AirGreen inspection before each summer season.
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Regularly check that nothing is obstructing the airflow around the condensers (plants, bicycles, various objects).
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To consider, in the medium term, replacing the two units with a more energy-efficient system using R-32 refrigerant, such as the Midea28 models that we frequently install in Montreal and on the South Shore.
Thanks to our intervention, the Lachine client now benefits from restored comfort , optimized energy consumption and the peace of mind that only a team specializing in Goodman HVAC system repair can offer.