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I have filters in all my returns is a filter needed in my furnace Rheem Classic 90 plus.

Post created: 2014-12-01 Type of Equipment: Furnace Views: 143

This question was created on the page: https://www.furnacecompare.com/furnaces/rheem/classic-90-plus.html.

I just moved in to this house

On 2014-12-01 Danielle wrote:

The filter location for the Rheem Classic Plus 90 depends on the air flow configuration. If your unit is an upflow unit then there are additional filters within the furnace cabinet on the bottom and side. If your unit is a downflow unit then the filters are located in the ductwork.


Furnace Filters for the Rheem Classic 90 Plus

Air Flow Configuration Cabinet Width Filters
Upflow 17-1/2" 2 15-3/4x25x1 filters
Downflow / Horizontal 17-1/2" 2 12x20x1 filters
Upflow 21" 1 15-3/4x25x1 filter
Downflow / Horizontal 21" 2 12x20x1 filters
Upflow 24-1/2" 1 15-3/4x25x1 filter 1 22-3/4x25x1 filter
Downflow / Horizontal 24-1/2" buy now on amazon 2 14x20x1 filters
Upflow 25" 1 19-1/4x25x1 filter

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