Cleaning a wall-mounted air conditioner in Sainte-Julie

An essential cleaning intervention to restore the breathability and performance of a wall-mounted air conditioner

At AirGreen , we know that even the most reliable appliances can lose efficiency over time due to the accumulation of dust, dirt, and debris in their internal components. This complete cleaning service for a wall-mounted air conditioner , performed in Sainte-Julie on Montreal's South Shore , perfectly illustrates how thorough maintenance can transform a tired system into a high-performing and quiet appliance.

Initial diagnosis: a dirty wall-mounted air conditioner

Our team was called to inspect a wall-mounted air conditioner whose performance had visibly decreased. The customer reported:

• A lower airflow than usual;

• A slightly unpleasant odor when switched on;

• And rising energy consumption.

Upon our arrival, an initial visual inspection revealed:

• Air filters completely clogged with household dust;

• Evaporator fins covered with a greyish deposit ;

• Traces of moisture and light mold on the lower blower flap.

This type of accumulation is not uncommon, especially in appliances used intensively throughout the year, as is often the case in homes in Sainte-Julie.

Complete cleaning and professional method

To ensure safe and effective cleaning , we followed our AirGreen maintenance protocol in several precise steps:

1. Preparation and protection of the work area

Before any handling, we installed a waterproof wash cover under the wall unit to contain the water and cleaning products. The surrounding furniture and walls were carefully protected.

2. Partial disassembly of the device

The filters, flaps, and front covers were removed to access all internal components. This minimal disassembly allows for thorough cleaning without voiding the manufacturer's warranty .

3. Washing the filters and fins

The filters were washed in warm water with an environmentally friendly biodegradable detergent , then rinsed and air-dried.
The evaporator fins were cleaned with a gentle jet of antibacterial solution specially designed for HVAC systems, effectively removing fine dust and bacteria.

4. Disinfection of the fan and drainage tray

Using a directional jet nozzle, we removed the deposits stuck to the fan blades. The partially blocked condensation drain was flushed until the water flowed freely.

5. Rinse, dry, and check functionality

Once the cleaning was complete, we thoroughly rinsed the coil and dried it carefully. The device was then tested:

• The airflow has become strong and uniform again;

• The unpleasant smell has disappeared;

• The air conditioner now operates more quietly and energy-efficiently .

Results: restored comfort and improved air quality

The customer immediately noticed the difference: a more stable temperature, noticeably cooler air, and a reduction in fan noise.
In addition to comfort, this cleaning also has a measurable impact on durability : a clean device consumes less energy and undergoes less mechanical stress, thus reducing the risk of future breakdowns.

Why regular cleaning is essential

Many homeowners neglect cleaning their wall-mounted air conditioner , thinking that simply dusting the exterior is enough. In reality:

• Accumulated dust reduces heat exchange and increases electricity consumption;

• Stagnant moisture promotes mold growth;

• And the bacteria can spread throughout the entire dwelling.

At AirGreen, we recommend a complete cleaning once a year (ideally before the warmer months). This preventative maintenance:

• Improves indoor air quality;

• Extends the system's lifespan;

• And ensures optimal performance while reducing energy costs.

AirGreen's expertise at your service

Thanks to our certified HVAC maintenance technicians , we use specialized tools and safe products that meet Quebec's environmental standards. Whether your unit is a wall-mounted heat pump , a multi-zone air conditioner , or a ducted system , we adapt our methods to guarantee impeccable results.

At AirGreen, we believe that proper maintenance is the key to lasting comfort and healthy air in every home on the South Shore , in Montreal and in Laval .