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Friedrich P12B-A Air Filter
All air filters exist in many different filtering types in which the one you choose will depend on your choice for how clean you want the air and whether anyone suffers from allergies in the home. Professionals in the industry advise the your furnace filter is exchanged for a new one every 3 months for optimal air quality inside the house. The size of the whole house filter choice of options due to the constraint of the availability of room of your furnace or handler.
Major symptoms of a weak main filter
- The system filter looks bad and replacing it would be best right away
- It is greatly advised to replace your air filter four times a year in order to have clean air in the home
- When you hold it up, the light cannot show through a dirty filter
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