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Frigidaire LRA18HMU218 Filter
The unit filter has a main job of trapping really small dust parts and other tiny bits from the air in the house. This can both keep the unit clean and make it run much more efficient while also cleaning the air in your home. During regular maintenance the filter should be simply replaced or possible scrubbed clean at least twice a year if not more, depending on how much you use it.
Indications of an ineffective main filter
- The main filter looks dirty and could be replaced soon
- It is recommended to replace your air filter every three months to help clean the indoor air
- When you hold the filter up to the light, it will not shine through to the other side of a completely clogged filter
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