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Lennox 13HPD-024 Air Filter
It is recommended that the air filter is changed every 90 days or so as to maintain good airflow inside the house. All air filters come in many varieties and specific sizes, in which the one you choose will depend on your demands for clean air and the specific size of filter you need for your system. The dimensions of the air filter can not be a personal choice because it is based on the declared size of your system.
Important hints the dust filter needs a replacement ASAP
- The air filter looks brown and could be replaced ASAP
- It is highly recommended to replace the filter about every three months for clean air inside the house
- When you hold the filter up to the light, it cannot infiltrate to the opposite side of the filter
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