A dirty wall-mounted air conditioner: a common problem in Brossard
At AirGreen , we frequently perform complete cleaning of wall-mounted air conditioners in Brossard . This photo shows the interior of a unit where the evaporator fins and internal walls are covered in compacted dust and grayish deposits . These accumulations are typical of units that operate for several months without maintenance: the vacuumed dust sticks to the fins, hindering airflow and degrading indoor air quality.
This type of soiling affects not only the appliance's performance but also the health of the occupants. The air circulated by the unit then carries fine particles and allergens , which can worsen respiratory symptoms and create an unpleasant odor when the unit is switched on.
Diagnosis before cleaning
During our inspection, we observed:
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A thick layer of dust on the evaporator fins ;
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Visibly saturated filters , limiting airflow;
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An accumulation of dirt in the corners of the casing and around the temperature sensor;
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A noticeable decrease in cooling performance was reported by the customer.
We confirmed that the condensate drainage was still functional, but at risk of clogging due to dust and microparticle deposits accumulated on the base of the drain pan.
Steps for a complete cleaning
1. Securing and dismantling the unit
We begin by cutting off the power supply and protecting the wall and floor. The front panels and filters are carefully removed to expose the heart of the unit: the evaporator , the cylindrical fan , and the exhaust ducts.
2. Initial dusting and vacuuming
Using a vacuum cleaner with a soft, anti-static brush , we removed the surface dust that had accumulated on the fins and around the motor. This step reduces the risk of dirt being thrown up during wet washing.
3. Deep cleaning of the evaporator
We spray a biodegradable cleaning product specifically designed for HVAC systems , formulated to dissolve grease and ingrained dust without damaging the aluminum fins. After a few minutes, we rinse using a controlled-pressure washing system .
This process allows the dirt trapped in the micro-interstices of the evaporator to be extracted, thus restoring the optimal airflow and thermal efficiency of the machine.
4. Cleaning the fan (turbine)
The cylindrical turbine was also clogged. We disassembled it for manual cleaning , using a neutral solution and a gentle rinse with lukewarm water. A clean turbine ensures quieter ventilation and a consistent airflow .
5. Disinfection and antibacterial treatment
We then apply a certified eco-friendly disinfectant , eliminating bacteria and mold that can develop in a humid environment. This treatment helps to purify indoor air and prevent unpleasant odors .
6. Reassembly and final testing
Once the unit is perfectly clean and dry, we reassemble everything and perform a complete functional test : measuring the airflow, checking the outlet temperature, and verifying proper drainage. This concludes with a meticulous visual inspection to ensure no traces of dirt remain.
Results after intervention
After our cleaning, the client immediately noticed:
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Fresher, cleaner air ;
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A significant reduction in operating noise ;
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Improved cooling capacity , even at low speeds;
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Complete elimination of persistent odors .
From a technical point of view, the evaporator's efficiency has been restored to its original performance , and the cold air outlet temperature has returned to normal levels (around 9-10 °C depending on ambient conditions).
Why regular cleaning of a wall-mounted air conditioner is essential
A poorly maintained wall-mounted air conditioner loses performance, consumes more electricity, and reduces indoor air quality. Accumulated dust acts as a thermal barrier and can:
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Make the compressor work harder ;
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Increase energy consumption by up to 30% ;
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Promotes the formation of mold on damp fins;
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To prematurely damage internal components .
At AirGreen , we recommend having your unit cleaned at least once a year , ideally before the warmer months. Regular preventative maintenance helps extend the system's lifespan and ensures healthy air throughout your home.
AirGreen's expertise in Brossard and Greater Montreal
Our certified technicians operate in Brossard, Montreal, Laval, Longueuil, on the North Shore and the South Shore , for all types of cleaning and maintenance of HVAC systems : heat pumps, wall-mounted air conditioners, central systems and multi-split systems.
Each intervention is carried out with environmentally friendly products , specialized tools and in full compliance with the manufacturer's recommendations .
Our approach is based on three pillars:
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Technical efficiency : thorough cleaning to restore maximum performance;
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Safety : procedures compliant with RBQ standards and electrical protocols;
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Respect for the environment : use of non-corrosive and biodegradable products.
In conclusion
This wall-mounted air conditioner cleaning in Brossard demonstrates the positive impact of regular professional maintenance. By removing accumulated dust, we not only restored cooling power but also improved indoor air quality and reduced energy consumption .
At AirGreen , we believe that proper maintenance is the key to lasting comfort and a high-performing HVAC system, summer and winter.