An urgent service call in the heat of the day in Sainte-Thérèse
When the North Shore's hot days roll in, a faulty central heat pump can quickly become a major problem. This is what happened to a couple in Sainte-Thérèse, whose Coleman system suddenly stopped cooling their home. The outdoor condenser, hidden behind a cedar hedge, appeared intact at first glance, but an unusual noise and declining performance prompted the homeowners to contact AirGreen for a complete inspection and prompt repair .
Initial diagnosis: a clogged condenser and a compressor at risk
Upon our arrival, our technician noticed two worrying elements:
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The Coleman condenser was partially clogged with plant debris and cedar needles,
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The airflow from the top vent was abnormally low.
A pressure check of the R-410A refrigerant revealed a thermal overload caused by a lack of airflow. This caused the compressor to over-consumption and the fan motor to overheat . The customer had the foresight to shut down the unit in time, thus preventing a complete breakdown.
Steps of repair
Our team carried out a series of specific interventions to restore the performance of the HVAC system :
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Thorough cleaning of the condenser using a biodegradable cleaner, designed to remove oils and residues without damaging the heat exchange fins.
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Complete clearance of the ventilation area , by cutting back any cedar branches that are too close to the appliance (minimum 60 cm around).
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Fan motor check : The winding showed signs of overheating, but no major degradation.
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Replaced the fan start capacitor as a preventative measure to ensure reliable restarting.
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Circuit pressure and leak test : no leaks detected.
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Complete system restart and measurement of blowing temperatures - result: a differential of 10.5°C, perfectly in line with Coleman standards.
Results and recommendations
Once the repair was completed, the Coleman central heat pump returned to peak performance. The Sainte-Thérèse couple immediately noticed a difference in comfort, with a stable indoor temperature and much quieter operation.
We recommended to them:
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Seasonal maintenance before each summer ,
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Regular visual cleaning of the condenser (at least twice per season),
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And an annual professional AirGreen inspection , including checking the pressure, motor and electrical connections.
The Dangers of a Clogged Condenser
Many homeowners underestimate the impact of vegetation around outdoor units. However, poor air circulation can cause:
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Compressor overheating ,
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An increase in electricity consumption ,
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And a reduction in the lifespan of the HVAC system.
At AirGreen, we always remind you that a condenser must breathe freely . Even a slight obstruction significantly reduces energy efficiency.
AirGreen Expertise: Reliability, Precision and Sustainable Advice
At AirGreen, every HVAC service call is handled with rigor and transparency. Our certified technicians evaluate the entire system—from the condenser to the electric furnace—to ensure optimal operation throughout the year .
We work on all brands of central heat pumps , including Coleman, Lennox, Goodman, Trane, Bosch and Comfortmaker , in Montreal, Laval, Longueuil, on the North Shore and the South Shore . Our commitment: lasting repairs , honest diagnosis , and peace of mind for customers .
Why choose AirGreen for your central heat pump repairs?
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Rapid availability : priority interventions during heat waves.
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CMMTQ certified technicians with multi-system expertise.
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Smart preventative maintenance , tailored to your residential environment.
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Full warranty on replaced parts and labor.
Through our preventative approach, we help owners avoid costly breakdowns while maximizing the life of their Coleman equipment.