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Rheem Air Filter Replacements

FilterBuy has the perfect replacement for any Rheem furnace. Simply choose the model of the filter you are replacing below. If you have a standard 1", 2", or 4" filter, then any of our FilterBuy replacements will do - just search for your filter by size.

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17.5 X 21 X 4.5

Actual: 17.25x20.75x4.38"

Designed to Fit:
RXHF-E17AM10 RXHF-E17AM13

Prices From as low as
$22.99

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21 X 21 X 4.5

Actual: 20.75x20.75x4.38"

Designed to Fit:
RXFH-E21AM10 RXFH-E21AM13

Prices From as low as
$23.99

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21 X 24.5 X 4.5

Actual: 20.75x24.25x4.38"

Designed to Fit:
RXHF-E24AM10 RXHF-E24AM13

Prices From as low as
$23.99

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Rheem Filter Questions

1. How often should I change my Rheem filter?

No matter which Rheem HVAC unit you have, our replacement filters should be changed after 6 to 9 months, depending on the air quality in your home. This is longer than the usual 3-6 months because the filters are thicker – they have more surface area to capture air contaminants before they fill up and need to be replaced. It’s recommended that the filter be changed more frequently if there are pets or smokers in your house. HVAC professional can assist with changing your filter, but you can do it by following the steps below:

2. Where is the filter on a Rheem furnace?

The furnace filter is located in or just under the blower section.

3. How do you change the air filter on a Rheem furnace?

To change a Rheem furnace filter:
  • 1 Locate the Rheem air filter inside of your unit or furnace
  • 2 Remove any screws or latches keeping the unit/furnace closed (this could require the use of a screwdriver)
  • 3 Take the lid off and pull the filter out
  • 4 Replace the old filter with the new one and attach the lid back on the unit/furnace
  • 5 Repeat the changing process every three months

4. What MERV rating does Rheem recommend?

Rheem recommends filters of MERV 8 and above. This MERV level is strong enough to remove substances like pollen, dust mites, dust and pet dander from the air. Higher MERV filters are better suited for minimizing allergy symptoms and improving indoor air quality — however, you'll need to check and see the maximum MERV rating supported by your Rheem furnace model.