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Réparation d’un climatiseur mural Midea à Sainte-Julie
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Repair of a Midea wall-mounted air conditioner in Sainte-Julie

A deep cleaning to bring a dirty air conditioner back to life

At AirGreen , we know that proper maintenance is key to ensuring the longevity and performance of a wall-mounted air conditioning system. Recently, our team traveled to Sainte-Julie , on the South Shore of Montreal , for a service call regarding a Midea wall-mounted air conditioner whose performance had drastically dropped.

The customer contacted us after noticing a drop in cooling efficiency and water leaking from the bottom of the wall unit. These symptoms suggested a buildup of dirt and a condensate drainage problem , a typical occurrence in spring when the units were not cleaned before the summer restart.

Diagnosis: A system clogged with dust and mold

Upon opening the unit, our technicians immediately noticed that the evaporator and turbine were covered with a grayish, sticky deposit, a sign of a lack of professional cleaning for several seasons .
This type of fouling prevents proper air circulation, overloads the compressor and increases energy consumption.

The condensate tray was also clogged, which explained the observed water leaks. Finally, the coil fins were slightly dirty, requiring gentle steam cleaning.

Intervention: complete cleaning under professional washing tarpaulin

For this type of intervention, our technicians use a waterproof cleaning tarpaulin , specially designed to protect the walls and collect wastewater during washing. This blue tarpaulin, fitted around the wall unit, allows for deep cleaning at high pressure without the risk of splashing water into the room.

Here are the main steps of the intervention:

  1. Work area protection : waterproof tarpaulin and drainage pipe directed to a bucket.

  2. Cleaning the evaporator coil with a biodegradable product that eliminates mold and bacteria.

  3. Rinse with clean water using a professional sprayer.

  4. Cleaning the turbine (often the dirtiest part) with a brush and a gentle jet.

  5. Antibacterial disinfection of the entire unit to prevent unpleasant odors.

  6. Checking the drain and condensate discharge flow rate .

  7. Midea air conditioner fully recommissioned and tested .

The whole operation lasted about 1 hour 15 minutes , and as soon as the cleaning was finished, the air blown by the air conditioner became fresh, powerful and free of odors.

Result: restored performance and healthier air

After cleaning, we checked the blowing temperature , refrigerant pressure and air flow . The values ​​were again in line with the Midea manufacturer's specifications.
The customer immediately noticed the difference: faster cooling , cleaner air and no water leaks .

We took the opportunity to recommend:

  • An annual interview before summer;

  • Regular replacement of the washable filter ;

  • A drainage check in the spring.

These tips not only help prevent breakdowns, but also extend the life of the appliance and save on the electricity bill .

Why entrust the cleaning of your wall-mounted air conditioner to AirGreen?

At AirGreen , we specialize in maintenance, repair and installation of residential and commercial HVAC systems in Montreal, Laval, Longueuil, the North Shore and the South Shore .
Our technicians:

  • Use professional tools and safe products ;

  • Are trained on all major brands (Midea, Gree, Fujitsu, Sharp, LG, Goodman, etc.);

  • Offer fast, clean and guaranteed interventions ;

  • Can detect circuit board, sensor or motor problems in advance .

Every complete wall-mounted air conditioner cleaning includes a full functional diagnosis —a service AirGreen consistently offers to ensure customer peace of mind.

Conclusion: Preventive maintenance, lasting comfort

This intervention in Sainte-Julie perfectly illustrates the importance of preventive maintenance for wall-mounted air conditioners. A simple accumulation of dust can lead to a series of problems—loss of efficiency, leaks, odors, and increased electricity consumption.

Thanks to our rigorous approach and the use of specialized tools such as the professional cleaning tarpaulin , we guarantee visible and lasting results.

For a complete cleaning of your Midea wall-mounted air conditioner or any other brand , contact AirGreen today. We serve the entire Greater Montreal area , with fast, professional service that meets your expectations.