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Lennox CB29M-46 Air Filter
It is recommended that the air filter is replaced for a clean one every 90 days or so due to the filter clogging up and restricting the flow of air through the ducts. The measurement proportions of the filter is not really a choice that needs to be made due to the requirement of your HVAC blower system. Air Filters come in a wide array of styles and sizings, depending on your choice for how clean you want the air and whether anyone suffers from allergies in the home.
Some warnings of a poorly working filter
- Manufacturers have recommended to replace the filter every season of the year so as to have cleaner breathable air
- The unit air filter looks gray or brown and replacing it would be best as soon as humanly possible
- With a light behind the air filter, the light will hardly shine through to the other side of a completely clogged filter
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