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Lennox CB28UH-042 Air Filter
It is advised that the air filter is swapped out every 3 months due to the filter clogging up and restricting the flow of air in the home. Filters for your Lennox CB28UH-042 are available in many filtering levels, which all depends on your personal demands for clean air and whether anyone suffers from allergies in the home. The actual size of the filter is not a optional choice due to the requirement of whoever designed your heating and cooling system.
Clues to watch for to know the primary air filter is in need of replacing
- It is advised to switch out the air filter in your unit about every 90 days to help purify the air indoors
- When you face it toward a light, the light cannot show on the other side a dirt-packed filter
- The air filter looks bad and perhaps should be replaced as soon as you can
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