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International Comfort Products HAC442AKA1 Air Filter
HVAC specialists suggest the your furnace filter is changed every 90 days or so because the filter can get clogged and may result in poor air flow inside the house. The main filter should filter dust and other particles from the air handler as well as the home. The dimensions of the filter is not really a choice that needs to be made because it is based on the declared size of your HVAC blower system.
Warnings of a deteriorating air filter
- When you hold it up, the light does not break through to the other side of the filter at all
- The system filter looks dirty and it would be a good idea to replace it immediately
- It is greatly recommended to replace the filter four times a year in order to keep the air free from too much dust
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