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Nordyne M3RL-060A-BW Air Filter
All air filters come in many filtering types depending on your air quality needs and air handler requirements. The height, length and width of the main system air filter optional choice because it is based on the declared size of whoever designed your heating and cooling system. It is recommended that the filter is exchanged for a new one every 90 days or so for optimal air quality through the ducts.
Some clues the air filter is on its last leg
- Professionals have recommended to switch out the air filter in your unit about every three months to keep the house clean and less dusty
- Sunlight does not shine through to the other side of the filter
- The main filter looks gross and should be replaced real soon
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