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Haier CPN12XH9 Air Filter
It is recommended that the air filter is swapped out every 90 days or so for optimal air quality in the home. The size of the filter is not really a optional choice but rather a requirement of your furnace or handler. Haier CPN12XH9 filters come in many types and sizes, depending on your demands for clean air and air handler requirements.
Indications of a bad air filter
- If you place a light source behind it, the light cannot infiltrate to the opposite side of a completely clogged filter
- Manufacturers have recommended to replace your air filter four times a year for clean air inside the house
- The unit air filter looks dusty and probably should be replaced as soon as humanly possible
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