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

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Thumb

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

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Thumb

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

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