Service call reveals performance issue on Goodman unit
At AirGreen , we were recently called to Sainte-Rose, a quiet residential neighborhood in Laval , to work on a Goodman wall-mounted heat pump . The customer had been noticing a significant drop in performance for several days: the machine was struggling to effectively cool his condo, despite a continuously running compressor. In addition, an unusual vibrating noise was being heard near the outdoor unit installed on a small balcony.
On-site diagnosis: a raised but poorly stabilized heat pump
Upon our arrival, we noticed a raised installation typical of condos in Laval: the Goodman condenser was placed on a metal structure fixed to anti-vibration blocks. Although this type of installation is common, it requires perfect stability to avoid structural resonances and vibrations .
After inspection, our technician identified several contributing elements:
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The metal support was slightly out of level.
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The anti-vibration blocks were crushed unevenly, reducing their effectiveness.
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A buildup of dust and debris around the fan was reducing airflow.
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The external control board was showing signs of intermittent overheating.
These combined anomalies explained both the drop in performance and the sound vibrations felt by the customer.
Technical intervention: level adjustment, complete cleaning and calibration
Our intervention took place in several methodical stages:
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Partial disassembly of the condenser to check the mounting base and correct the horizontal alignment.
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Replacement of the anti-vibration blocks with a higher density model, better suited to the weight of the Goodman compressor.
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Deep cleaning of the ventilation grille and turbine, to restore optimal airflow.
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Checking electrical connections and tightening terminals , often responsible for voltage fluctuations.
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Refrigerant level inspection : R410A gas was at the correct level, eliminating the possibility of a leak.
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Calibration of the electronic card and progressive restart to stabilize the circuit pressures.
Result: restored performance and a quiet unit
Once the adjustments were completed, the Goodman heat pump returned to stable performance. The vibrating noise disappeared, the indoor temperature stabilized within minutes, and electricity consumption decreased by nearly 20% , according to the customer's inverter readings.
We also trained the owner on good maintenance practices:
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Visually check the supports after winter.
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Clean the internal filter every two months.
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Schedule annual preventative maintenance in the spring.
A typical setup, but an important reminder
This case perfectly illustrates a common situation in Laval and on the North Shore : even a recent and well-built installation can lose performance due to small mechanical drifts or poorly managed vibrations. These details, often neglected, end up affecting comfort and reducing the machine's lifespan .
At AirGreen , we emphasize the importance of precise technical monitoring, especially for wall-mounted heat pumps installed on balconies or terraces . The exposure conditions (wind, dust, reflected heat) are often more demanding than on the ground.
AirGreen expertise: complete diagnosis and guaranteed durability
Thanks to our recognized HVAC expertise in Montreal, Laval, Longueuil , and throughout the North Shore and South Shore , our teams intervene quickly to bring your systems back to life while ensuring their energy efficiency and longevity .
Each repair is also an opportunity to optimize performance: calibration, airflow verification, and pressure adjustment often allow for increased efficiency while reducing electrical consumption .