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Lennox G40UH-24A-045 Air Filter
All air filters exist in many different varieties and specific sizes, which depends on your particular air quality needs and air handler size requirements. It is recommended that the air filter is exchanged for a new one every 3 months because the filter can get clogged and may result in poor air flow in the home. The dimensions of the air filter can not be a choice that needs to be made because it is based on the declared size of your air handler.
Warnings of a worsening primary air filter
- Many pros have suggested to switch out the air filter in your unit every three months for clean air inside the house
- It looks very bad and the best thing to do would be to replace it immediately
- As you face it toward a light source, it cannot break through to the other side of a completely clogged filter
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