Wall-mounted air conditioning unit cleaning

Do you have doubts about the efficiency of your wall-mounted air conditioner?
Check out the common problems and our solutions.

Common problems

1 Power loss and vibration of your wall-mounted air conditioner

Probable causes :
1. Fan blade obstructed or blocked by dust
2. Filter clogged or blocked by dust
3. Frost on coil

A fan clogged with dust can considerably reduce the performance of your wall-mounted air conditioner, causing vibrations and frosting on the coil.

During production on the assembly line, the fan is balanced at the factory, with small balancers installed directly on the fan blades, despite the presence of a filter that is only up to 15% efficient. As the fan clogs, it causes an unbalance, creating a vibration that will increase over time. As a result, the more clogged the fan, the less efficient the wall-mounted air conditioner will be, and the more its efficiency will be put to the test, causing frosting on the wall-mounted air conditioner coil and potentially costly repairs.

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2 Frost forming on the coil of your wall-mounted air conditioner

Probable causes :
1. Coil clogged or blocked by dust
2. Filter clogged or blocked by dust
3. Fan blade clogged or blocked by dust

After using your wall-mounted air conditioner, you may notice water dripping down the wall or onto the floor underneath. There are several reasons for this problem:

Clogged filter

A filter clogged with dust can restrict airflow and create frost (ice) on the coil of your wall-mounted air conditioner and your outdoor evaporator. At the same time, it causes a loss of power and efficiency. Sometimes a simple cleaning of your filters can solve the problem!

If the problem persists, and since there could be several causes of these problems, it would be best to consult us, because in 90% of cases, a thorough cleaning is the only solution to your problems.

Sanding dust (new construction or renovation)

Sandblasting dust can be harmful to a wall-mounted air conditioner. If, during construction or renovation, your wall-mounted air conditioner was exposed to sandblasting dust and your coil was never cleaned afterwards, this is exactly what could happen!

Condensation mixed with sandblasting dust creates a mixture that looks like joint compound. This joint compound hardens inside the coil, giving the wall-mounted air conditioner no chance. As a result, the efficiency of your wall-mounted air conditioner is reduced to a minimum, and its lifespan is greatly affected.

3 Mould growth and unpleasant odours

Do you have dirt and unpleasant odors around the coil of your wall-mounted air conditioner? It’s probably mold!

Wall air conditioner filter efficiency rate

The efficiency rate of a wall-mounted air conditioner filter is no more than 15%, so 85% of the dust passes through the filter and into the coil of your wall-mounted air conditioner.

Coil clogged with dust mixed with condensation

Given the close relationship between the components of a wall-mounted air conditioner (filter, coil, drain valve), it’s normal to see mold around the coil, since dust mixed with condensation from your wall-mounted air conditioner becomes a source of prolific bacteria.

This can be very harmful to your health, especially if you suffer from allergies or asthma. Despite the precautions we take when cleaning our filters, mold always comes back every year.

4 Water slide under wall-mounted or floor-mounted air conditioner

There are several possible causes for this problem.

Wall-mounted air conditioner drain is blocked

When your wall-mounted air conditioner is running, the difference between the cold temperature of the coil and the warm temperature of the room creates condensation inside the coil.

The condensation water is directed into a drain under the coil and then discharged to the outside via a hose. If this pipe is clogged with dirt, it may be blocked, preventing the condensate from draining normally to the outside. The water then rises to the drain under the coil and eventually overflows down your wall and onto the floor beneath the wall-mounted air conditioner.

Frost on the coil of a wall-mounted air conditioner

If, after switching off your wall-mounted air conditioner, you see water dripping down the wall below the unit, the problem is much more serious.

The frost (ice) that has formed on the coil during use will thaw and overflow outside the drain pan, then run down the wall and onto the floor beneath the wall unit.

Outdoor evaporator

Your outdoor evaporator is not immune to the elements. An evaporator clogged with dust or pollen can lead to low pressure, creating frost on the coil of your wall-mounted air conditioner and evaporator.

The first reaction would be to contact your technician, but did you know that over 90% of the above-mentioned problems are related to dust accumulated on the filters, the air-conditioning coil and your fan, creating all the above-mentioned problems?

Cleaning procedure

Our cleaning technique is unique, exclusive and effective

Our dry steam cleaning process won’t damage your wall-mounted air conditioner. It restores it to its former efficiency, eliminates the above-mentioned problems and extends its service life. If you have any doubts about the efficiency of your wall-mounted air conditioner, don’t hesitate to contact us. Our specialist technicians are trained to detect this kind of anomaly.
It all starts with preventive maintenance!

Preventive maintenance

Preventive maintenance can significantly extend the life of your wall-mounted air conditioner.

Our preventive maintenance includes :

  • Cleaning your filters
  • Checking flow failure
  • Checking the drum (fan)
  • Checking the coil of your wall-mounted air conditioner