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International Comfort Products H9MPT075F12A1 Air Filter
It is highly recommended the your furnace filter is exchanged for a new one four times a year for optimal air quality through the ducts. The measurement proportions of the filter is not really a personal choice because of the constraint of your air handler. Air Filters are made in lots of varieties and specific sizes, which all depends on your personal choice for how clean you want the air and air handler requirements.
Important signs the dust filter probably needs to be replaced
- Professionals have advised to replace the filter every three months to help prevent mold and bacteria build-up
- The filter looks dusty and it would be a good idea to replace it ASAP
- When you hold it up, the light will hardly breach the other side of a dirty filter
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