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Q&A About Filters for American Standard Furnaces

Question: How / where do I change the filters for my American Standard Freedom 80 furnace and humidifier?

Answer: Depending on the type of air flow for your American Standard Freedom 80 determines where the filter would be located. For upright upflow models the filter can be internal bottom of the unit or an external rack on the side. For upright counterflow models the filter may be located in the return ductwork.

If you're not sure if you have an upflow or counterflow model, this article can help explain the difference.

If you still have questions, the owner's manual has pictures and instructions for changing your filter starting on page 4.

See the chart below for the correct filter size for the American Standard Freedom 80. This chart matches the correct filter by the width of your furnace cabinet.

Furnace Filters for the American Standard Freedom 80

Air Flow Configuration Cabinet Width Filters
Upflow / Horizontal 16-1/2" buy now on amazon 1 16x25x1 filter
Upflow / Horizontal 19-1/2" buy now on amazon 1 17x25x1 filter
Upflow / Horizontal 23" buy now on amazon 1 20x25x1 filter
Upflow / Horizontal 26-1/2" buy now on amazon 1 24x25x1 filter

Question: How do I replace the filter on the American Standard Freedom 90?

Answer: For most upflow models the filter will be found in the bottom or side of the blower cabinet. For downflow models the filters are found in the blower vent. The replacement filters for the American Standard Freedom 90 is found in the chart below. The chart corresponds to the airflow configuration and cabinet width of your unit.

Furnace Filters for the American Standard Freedom 90

Air Flow Configuration Cabinet Width Filters
Upflow / Horizontal 17-1/2" buy now on amazon 1 17x25x1 filter
(bottom air return)
buy now on amazon 1 17x25x1 filter
(side air return)
Upflow / Horizontal 21" buy now on amazon 1 20x25x1 filter
(bottom air return)
buy now on amazon 1 20x25x1 filter
(side air return)
Upflow / Horizontal 24-1/2" buy now on amazon 1 24x25x1 filter
(bottom air return)
buy now on amazon 1 24x25x1 filter
(side air return)
Downflow / Horizontal All buy now on amazon 2 16x20x1 filters
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