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International Comfort Products NTPM050FFA1 Air Filter
It is suggested the your furnace filter is changed every 90 days or so because the filter can get clogged and may result in poor air flow throughout the home. All air filters are made in lots of types and sizes, which all depends on your personal choice for how clean you want the air and air handler size requirements. The actual size of the filter is not a choice that needs to be made due to the constraint of the availability of room of whoever designed your heating and cooling system.
Hints of a deteriorating primary air filter
- Manufacturers have recommended to switch out the air filter in your unit every three months in order to have cleaner breathable air inside
- When you face it toward a light, the light cannot shine through to the other side of a dirty filter
- The unit air filter looks gray or brown and could be replaced right away
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