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Lennox CB30U-51 Air Filter
Lennox CB30U-51 filters are made in lots of filtering levels, in which the one you choose will depend on your desire for cleaner air and air handler size requirements. It is recommended that the filter is changed four times a year so as to maintain good airflow in the home. The size of the filter is not a choice that needs to be made due to the requirement of whoever designed your heating and cooling system.
What signals that my air filter is failing?
- Professionals have advised to replace your air filter every season of the year to help clean the indoor air
- The filter looks like it is filled with dust and could be replaced without delay
- With a light behind the air filter, the light will almost not shine on the opposite side of the filter at all
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