Regular cleaning is extremely necessary for air conditioners, the purpose is to keep the air conditioner in the best condition, remove mold, dirt, limit bacteria growth, help the air conditioner stay fresh and operate at full capacity. However, not everyone can do this basic task regularly, for many objective reasons such as forgetting, being stingy with money or because the outside of the machine still looks clean and works well, so they ignore cleaning.

Most air conditioners always have one or more air filters, such as enzyme filters or deodorizing filters, which help retain dust, pollen, allergens, etc. when sucked in, and return fresh, clean air when blown out.
However, after a period of use, due to holding too much dust, pollen, allergens, etc., these filters will lose their inherent effect if not cleaned or replaced promptly, and even have the opposite effect when the accumulated dust creates bacteria nests that blow back into the body, affecting the respiratory tract and health of the user.
In addition to the indoor unit, the outdoor unit, the outdoor unit, also needs to be cleaned periodically. This is an important part that determines the ability to dissipate heat and consume electricity of an air conditioner. However, due to frequent exposure to external factors such as sun, rain, dust, insects, etc., it hinders and reduces the performance of the machine. For example, even when the temperature is adjusted to the lowest level, the machine still does not achieve the desired coolness and also consumes a lot of electricity. Therefore, cleaning the condenser not only helps the air conditioner operate smoothly but also helps reduce the monthly electricity bill a lot.
As mentioned above, the accumulation of a lot of dust will hinder the performance of the air conditioner, causing the machine to always have to work at full capacity to cool, leading to overload, rapid damage, and reduced life... As a result, you have to spend a lot of other costs to repair, replace components or worse, have to buy a new air conditioner.
Everyone knows that the purpose of using air conditioning is to relieve the uncomfortable hot air, especially on the hottest summer days. But an air conditioner that cannot perform its function properly will greatly affect the quality of life, not only in residential areas but also in offices, shops, restaurants... that use air conditioning.
According to the recommendation of experts from Mitsubishi Heavy Industries air conditioners, for wall-mounted household models, it should be cleaned after 3-4 months of use if it is turned on all day or about 6 months if it is used less.