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Williams 6257732 Filter
The filter in the wall unit is there for filtering tiny dust fragments and other unwanted bits from the air in the house. This filtering system will help keep the unit clean and make it run more efficient while cleaning the air breathe in and out everyday. While doing regular cleaning of the houseZZZcommmaZZZ the air filter must be replaced or possible scrubbed clean every so often in order to keep things clean.
Indications of a bad main filter
- Many pros have advised to replace the filter about every three months so as to have cleaner breathable air
- Sunlight is unable to breach the other side of a dirty filter
- The system filter looks bad and it would be a good idea to replace it right now
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