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Lennox 13ACD-036 Air Filter
It is suggested that the air filter is replaced for a clean one four times a year because the filter can get clogged and may result in poor air flow in the home. Filters come in many filtering types which all depends on your personal desire for cleaner air and the specific size of filter you need for your system. The actual size of the air filter can not be a choice of options but rather a requirement of your furnace or handler.
Major signs of an ineffective filter
- When you hold it up, the light will hardly penetrate through a completely clogged filter
- The air filter looks gray or brown and should be replaced real soon
- Many pros have suggested to replace your air filter every season of the year to keep the unit running efficiently
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