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International Comfort Products NAC218AKA1 Air Filter
All air filters come in a wide array of filtering types which depends on your particular desire for cleaner air and whether anyone suffers from allergies in the home. Measurements of the filter is not a choice of options because it is based on the declared size of your system. It is recommended the your furnace filter is swapped out every 90 days or so to maintain the best air quality through the ducts.
Simple warnings that your main filter is about to stop working?
- If you lift the air filter up to a source of bright light, the light will barely breach the other side of the air filter
- The filter looks like it is filled with dust and it would be best to replace it immediately
- It is highly advised to replace the filter every three months for to keep the air inside the house cleaner
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