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What size filter do I need for a Rheem Classic 90 Plus?

Post created: 2014-12-09 Type of Equipment: Furnace Views: 1150

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

On 2014-12-10 Danielle wrote:

To find a replacement filter for your Rheem Classic 90 Plus see the chart below. The chart below matches the correct filter to your unit by air flow configuration and width of the furnace cabinet.

Let us know how you make out!


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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