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LG LAU091CNP Filter
The filter in the wall unit is designed to be good at removing microscopic dust and other miniscule particles as it is being forced through the system. The filter can both make the unit cleaner and make it operate much more efficient while also filtering the air you breathe in your house. Because of this, it should be swapped out for a new one or perhaps cleaned thoroughly at least twice a year if not more, in order to keep things clean.
Warnings of a poor main filter
- It looks dusty and maybe should be replaced soon
- Light will almost not show on the other side the filter
- Manufacturers have suggested to replace the filter every three months in order to have clean air in the home
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