Cassette air conditioning units are very similarly to split system air con units with a key difference being the placement of the unit. Cassette units are typically found on the ceiling and blows air through two, three or even four sides of the unit. The regular use of a cassette air conditioner causes a build-up of dirt, dust and other similar contaminants in the coils, fans and filters of the unit decreasing the efficiency of the unit and costing you money in energy costs.
In addition to increasing the running costs of your unit, a blocked unit is a breeding ground for harmful bacteria and mound that feed off the hair, pet fur, skin cells, carpet fibres and other contaminants that naturally flow into their air conditioner. This build-up of dirt and debris as well as the amount of moisture present in the unit is a breeding ground for mould and bacteria. When the air conditioner is turned on, the unit circulates through the room blowing air that is contaminated with the bacteria and mould growing in the fans, coils and in the filter.