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Rheem Compatible Air Filter Replacements

Filterbuy replacement air filters offer the same high quality materials and performance as the name brand but at a fraction of the cost.

  • Available in MERV 8, 11, and 13
  • Free shipping
  • Guaranteed to fit
  • Lowest prices
  • Made in the U.S.A.
  • Family owned and operated

Customer Review

"Absolutely the best and most efficient way to purchase furnace filters! No problem finding the filter I needed, filters delivered within a couple of days, fit perfectly and shipping is FREE! What's not to like?"-Christine P.
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17.5 X 21 X 4.5 MERV 8 17.5 X 21 X 4.5 MERV 11 17.5 X 21 X 4.5 MERV 13

Actual: 17.25x20.75x4.38"

Designed to Fit:
RXHF-E17AM10 RXHF-E17AM13

Select MERV Rating
MERV
8
Standard
MERV
11
Superior
MERV
13
Best

MERV 8 (FPR 5) - filters pollen, dust mites, mold, and larger dust particles like pudding mix MERV 11 (FPR 7) - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour MERV 13 (FPR 10) - filters pollen, dust mites, mold, all bacteria, proplet nuclei (sneeze), and tobacco smoke

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21 X 21 X 4.5 MERV 8 21 X 21 X 4.5 MERV 11 21 X 21 X 4.5 MERV 13

Actual: 20.75x20.75x4.38"

Designed to Fit:
RXFH-E21AM10 RXFH-E21AM13

Select MERV Rating
MERV
8
Standard
MERV
11
Superior
MERV
13
Best

MERV 8 (FPR 5) - filters pollen, dust mites, mold, and larger dust particles like pudding mix MERV 11 (FPR 7) - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour MERV 13 (FPR 10) - filters pollen, dust mites, mold, all bacteria, proplet nuclei (sneeze), and tobacco smoke

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21 X 24.5 X 4.5 MERV 8 21 X 24.5 X 4.5 MERV 11 21 X 24.5 X 4.5 MERV 13

Actual: 20.75x24.25x4.38"

Designed to Fit:
RXHF-E24AM10 RXHF-E24AM13

Select MERV Rating
MERV
8
Standard
MERV
11
Superior
MERV
13
Best

MERV 8 (FPR 5) - filters pollen, dust mites, mold, and larger dust particles like pudding mix MERV 11 (FPR 7) - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour MERV 13 (FPR 10) - filters pollen, dust mites, mold, all bacteria, proplet nuclei (sneeze), and tobacco smoke

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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.