GeneralAire 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.
Thumb

16x25x3 MERV 8 16x25x3 MERV 11 16x25x3 MERV 13

Actual: 15 3/4 x 24 1/4 x 3

Designed to Replace:
14164, 3FM1625, 4521
Designed to Fit:
MAC1200 Mini-MAC

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

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

ea
Thumb

20x25x5 MERV 8 20x25x5 MERV 11 20x25x5 MERV 13

Actual: 19 5/8 x 24 3/8 x 4 3/4

Designed to Replace:
4356, GA100A37, 14201, 4501, 5FM2025
Designed to Fit:
MAC2000 Mega-MAC

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

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

ea
Thumb

16x25x5 MERV 8 16x25x5 MERV 11 16x25x5 MERV 13

Actual: 15 5/8 x 24 1/8 x 4 7/8

Designed to Replace:
4352, GA100A29, 5FM1625 14161, 4511
Designed to Fit:
MAC1400 Mighty-MAC

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

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

ea