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GE AKH25DNT1 Filter
The filter has a main job of removing small dust molecules and other unwanted bits as it is being forced through the system. This filtering system will help keep the wall unit from building up too much dust and help it be more efficient while, at the same time, filtering the air breathe in and out everyday. During regular maintenance it should be exchanged or simply cleaned at least twice a year if not more, depending on how much you use it.
Subtle hints your filter has very little life left
- The unit air filter looks dirty and maybe should be replaced before tomorrow
- If you place a light source behind it, the light cannot shine through to the other side of a very dirty air filter
- Many pros have advised to replace the filter about every 90 days for clean air inside the house
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