An intervention under the sun to breathe new life into a Toshiba unit
At AirGreen , we were recently called to Sainte-Julie to perform a complete cleaning of a Toshiba wall-mounted heat pump installed on the exterior wall of a single-family home. The unit, facing south and directly into the sun, showed clear signs of soiling due to dust, pollution, and weathering.
Initial diagnosis: a heat pump worn out by dust accumulation
Upon our arrival, we observed:
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A clogged external ventilation grille , reducing airflow;
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Slightly greasy fins clogged with fine dust;
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Traces of moisture that have encouraged a thin layer of dirt to stick to the surface;
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An irregular flow of water from a partially blocked drain.
These combined factors negatively impacted the overall efficiency of the heat pump, forcing the compressor to work harder to maintain the indoor temperature. The customer also noted an increase in electricity consumption and a slight decrease in performance in cooling mode .
Cleaning steps: precision and adherence to the manufacturer's instructions
To restore the device's optimal performance, our team followed a structured and safe method , adapted to the Toshiba brand:
1. Preparation and inspection
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Complete power-off of the device.
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Check the wiring and the wall bracket attachment.
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Protection of surrounding surfaces against splashes.
2. Cleaning the outdoor unit
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Gentle suction of the fins and grille using a soft bristle nozzle;
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Application of a biodegradable degreaser designed for HVAC condensers;
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Low-pressure rinsing with a controlled water jet to remove dust and greasy residue;
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Cleaning the drainage tray and checking the flow.
3. Technical inspection
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Checking the fan's rotation and the absence of abnormal noises;
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Air outlet temperature test to confirm performance recovery;
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Observation of the defrost cycle in heating mode.
Results: restored efficiency and reduced consumption
After the intervention, the Toshiba heat pump was once again operating smoothly and quietly. The measurements taken indicated:
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An improvement of 20 to 25% in airflow ;
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A more stable blowing temperature ;
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A reduction in mechanical noise related to compressor effort.
The customer immediately noticed improved interior comfort and a faster system startup, especially in warm weather.
The importance of regular maintenance
This case in Sainte-Julie perfectly illustrates the importance of preventative cleaning of wall-mounted heat pumps . Even high-quality units like Toshiba can see their performance drop after only one or two seasons without maintenance.
An annual maintenance check by AirGreen allows you to:
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Prevent costly compressor breakdowns;
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Maintain optimal energy efficiency;
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To ensure cleaner air free from contaminants;
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Extend the system's lifespan.
At AirGreen, precision makes the difference
Our specialized technicians follow a meticulous approach, combining experience, professional tools, and environmentally friendly products . Whether you are in Sainte-Julie, on the South Shore, in Laval, or in Montreal , our goal is the same: to ensure each client's lasting comfort and maximum performance from their HVAC system.