GeneralAire Furnace Filters
Genuine GeneralAire OEM replacement media filters, many also sold under the Reservepro name: the 4541, 4551 and 4556 at MERV 11, MERV 13 cartridges such as 4547 and 4557, and 6-inch filters such as the 13415 and 12758. Depths run from 3 to 6 inches. Shop by part number.
Browse all furnace filters, other 5 inch furnace filters, or more MERV 11 filters.
GeneralAire filter guide: part numbers and sizes ▾
How to find the right GeneralAire filter
GeneralAire makes several filters in the same nominal size, for example 16x25x5 as the 4541, 4366 and 4547, each for a different cabinet or rating. Match the part number printed on your old filter or on the cabinet label rather than size alone.
GeneralAire filters in this collection
| Part # | Size | MERV |
|---|---|---|
| 4541 | 16x25x5 | 11 |
| 4366 | 16x25x5 | 11 |
| 4547 | 16x25x5 | 13 |
| 4551 | 20x25x5 | 11 |
| 4368 | 20x25x5 | 11 |
| 4557 | 20x25x5 | 13 |
| 4556 | 20x20x5 | 11 |
| 4367 | 20x20x5 | 11 |
| GA100A11 | 20x20x5 | 10 |
| GA100A03 | 16x20x5 | 10 |
| 13415 | 16x25x6 | 11 |
| 13156 | 16x25x6 | 11 |
| 12758 | 20x25x6 | 11 |
| 12880 | 20x25x6 | 11 |
| 4572 | 16x25x4 | 13 |
| 4562 | 20x25x4 | 13 |
| GA104 | 16x28x4 | 8 |
| 4521 | 16x25x3 | 8 |
How often to change
Deep media filters like these typically last 6 to 12 months. Change sooner if you have pets or allergies, or after renovations, and note the date on the frame when you install a new one.
