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Lennox 14ACX-036 Air Filter
All air filters are made in lots of varieties and specific sizes, in which the one you choose will depend on your demands for clean air and the specific size of filter you need for your system. It is highly recommended the your furnace filter is changed every 90 days or so as to maintain good airflow in the home. Exact measurements of the filter is not really a personal choice because it is based on the declared size of your system.
What warnings should I watch out for to know if my filter is not working right?
- The unit air filter looks dirty and should be replaced today
- It is highly advised to swap out your air filter every 90 days to help prevent mold and bacteria build-up
- Sunlight cannot shine through the air filter
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