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Lennox XC21-060 Air Filter
Professionals in the industry advise that the filter that filters out particles from your home is changed four times a year so as to maintain good airflow throughout the home. The measurement proportions of the air filter can not be a choice of options due to the constraint of the availability of room of the manufacturer of your system. All air filters exist in many different filtering types which all depends on your personal demands for clean air and air handler requirements.
General warnings of a poorly working primary air filter
- The main filter looks like it is filled with dust and it would be a good idea to replace it immediately
- Professionals have suggested to replace your air filter every season of the year to keep the unit running efficiently
- If you place a light source behind it, the light cannot breach the other side of a very dirty air filter
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