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Haier ESA412K Filter
The filter in the wall unit was created for filtering tiny dust fragments and other tiny particles as it passes through. This helps keep the unit dust-free and make it run more efficient while cleaning the air breathe in and out everyday. Because of this, the filter should be replaced or cleaned at least twice a year if not more, in order to keep things clean.
Clues of a weakening dust filter
- It is highly recommended to swap out your air filter four times a year in order for the machine to run more efficient and to breathe easier inside
- If you lift the air filter up to a source of bright light, the light will barely breach the other side of the dirt filled filter
- The filter looks brown and perhaps should be replaced immediately
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