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Lennox 13ACX-024 Air Filter
All air filters are made in lots of styles and sizings, which all depends on your personal demands for clean air and the specific size of filter you need for your system. The actual dimensions of the filter is not really a choice you make because of the constraint of your HVAC blower system. HVAC specialists suggest that the filter is replaced for a clean one every 3 months because the filter can get clogged and may result in poor air flow through the ducts.
Red flags your Lennox air filter should be replaced
- Sunlight does not shine through a clogged air filter
- It is greatly advised to replace the filter about every 90 days in order for the machine to run more efficient and to breathe easier inside
- The filter looks gray or brown and it would be best to replace it right away
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