A Neglected Outdoor Unit, a System in Distress
In the vibrant neighborhood of La Petite-Patrie in Montréal, a residential client recently contacted us for an urgent service call on a Samsung wall-mounted heat pump. Upon arrival, we immediately noticed a common but often overlooked issue: an outdoor unit clogged with dirt, dust, and seasonal debris. The equipment, a Samsung Smart Inverter model, showed clear signs of wear due to a lack of maintenance.
The unit was installed on a concrete balcony, attached to a brick wall, and fully exposed to the elements. The fan struggled to operate efficiently, and the refrigerant lines appeared weakened over time due to poorly insulated refrigerant tubing.
Technical Diagnosis of the Outdoor Unit
Our certified technicians began with a full diagnostic inspection of the unit. Here’s what we found:
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Dust buildup on the condenser fins, preventing proper heat dissipation.
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Fan partially blocked by leaf debris and dust.
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Yellowed and cracked casing, exposing some components to moisture.
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Refrigerant lines in poor condition, with deteriorated insulation sleeves that caused cold air loss and compromised energy efficiency.
The unit was also making unusual noises and vibrating, due to an unbalanced fan motor caused by embedded debris in the fins. We also suspected a compressor malfunction, since the unit was no longer producing cold air despite an active indoor demand.
Specific Steps Taken by AirGreen
Thorough and Safe Unit Cleaning
At AirGreen, we follow a methodical approach. We began by cutting power to the heat pump to ensure a safe working environment. Then we proceeded with:
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Partially dismantling the casing to access the interior of the unit.
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A high-pressure rinse with clean water, combined with a biodegradable HVAC degreaser, to dislodge deeply embedded dirt from the condenser fins.
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Manual brushing of the fan blades, to remove all debris and rebalance the unit.
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Complete replacement of the refrigerant line insulation sleeves, to restore thermal sealing.
Electrical and Thermal System Checks
We then tested the electrical components:
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Checked the start capacitor.
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Measured the current draw of the fan motor.
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Tested the compressor using gauges to monitor refrigerant pressure.
No refrigerant leaks were found, but the compressor had overheated due to lack of ventilation. Once cleaned, the system was able to restart normally, gradually bringing cool air back into the home.
Result: Comfort Restored and System Stabilized
The client, who believed he would need to replace his Samsung wall-mounted heat pump, was relieved to learn that AirGreen’s targeted intervention was enough to extend the lifespan of his system. We also recommended annual preventive maintenance, especially before the summer season, to avoid further interruptions.
What This Situation Reminds Us
This service call illustrates the importance of preventive maintenance for outdoor units, especially when exposed on urban balconies. Even a high-quality wall-mounted heat pump like Samsung’s can quickly lose efficiency if it’s not kept clean and protected.
At AirGreen, we emphasize the regular cleaning of condensers, checking refrigerant insulation, and comprehensive electrical diagnostics before each season. These simple steps help avoid costly breakdowns and can reduce energy consumption by up to 20%.
Why Choose AirGreen for Your HVAC Repairs in Montréal
We respond quickly throughout Montréal, Laval, Longueuil, the North Shore, and the South Shore. Our technicians specialize in repairing wall-mounted heat pumps of all brands, including Samsung, Gree, Fujitsu, Tosot, and more. Every service call is handled with in-depth technical expertise and a constant focus on transparency.
Our clients know that with AirGreen, every visit is followed by a detailed report, practical advice, and accessible post-service support whenever needed.
Service Call Highlights
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Location: La Petite-Patrie, Montréal
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Type of unit: Wall-mounted heat pump
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Brand: Samsung Smart Inverter
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Issues found: dirt accumulation, unbalanced fan, deteriorated insulation, compressor overheating
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AirGreen solutions: full cleaning, fan rebalancing, replacement of insulation sleeves, full compressor check
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Final result: system fully operational, indoor comfort restored, maintenance recommended before summer
Taking Care of Your System Means Extending Its Lifespan
If you notice signs of poor performance, strange noises, or visible buildup on your outdoor unit, don’t wait for a full breakdown. Call our team for a preventive inspection and fast, professional, and guaranteed repair.
We are available for all types of HVAC repairs, whether it’s wall-mounted, central, multisplit, or commercial systems.
