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Frigidaire FRA12EZU211 Filter
The filter in the wall unit has the basic duty of trapping really small dust parts and other unwanted bits from the air in the house. This helps help keep the wall unit from building up too much dust and make it run a lot better at doing its job while, at the same time, filtering the air you breathe in your house. Because of the nature of filtering air, the air filter must be replaced or cleaned at least twice a year if not more, in order to keep things clean.
Signs of a defective main filter
- The system air filter looks very bad and replacing it would be best now
- When you face it toward a light, the light will hardly break through to the other side of a dirt-packed filter
- It is highly advised to replace your air filter every 90 days to help clean the indoor air
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