All 20 listings, cheapest per filter first
| Item | Size | Price | Per filter | |
|---|---|---|---|---|
| Filtrete 20x30x1 Air Filter, MERV 5, MPR 300, 6 HVAC Filters | 6 filter | $29.97 | $5.00 | Amazon → |
| Amazon Basics MERV 5 AC Furnace Air Filter, 20x30x1 inches, 6-Pack (Actual size: 19.75" x 29.75" x 0 | 6 filter | $37.79 | $6.30 | Amazon → |
| Filtrete 20x30x1 Air Filter, 3M MERV 1 HVAC AC Furnace Filter Replacement, 6-Pack (Actual Size 19.81 | 6 filter | $38.99 | $6.50 | Amazon → |
| Amazon Basics 20x30x1 Air Filter 6-Pack, MERV 11 AC Furnace Filters, Removes Dust, Pet, Allergen Con | 6 filter | $42.64 | $7.11 | Amazon → |
| ZHONG MERV 20x30x1 AC Furnace Air Filter MERV 13 Comparable with HVAC Air Condition Cabin Vent Fan 1 | 6 filter | $42.99 | $7.17 | Amazon → |
| Simply 20x30x1 Air Filter, Merv 8, 6 Pack, For Home AC Furnace & HVAC (Actual Size: 19.94"x29.94"x0. | 6 filter | $48.97 | $8.16 | Amazon → |
| Simply 20x30x1 Air Filter, Merv 8, 4 Pack, For Home AC Furnace & HVAC (Actual Size: 19.94"x29.94"x0. | 4 filter | $35.58 | $8.89 | Amazon → |
| Filterbuy 20x30x1 Air Filter MERV 8 Dust & Allergy Defense (6-Pack) | 6 filter | $54.96 | $9.16 | Amazon → |
| Honeywell 20x30x1 MERV 11 Allergen Reducer 11000 Electrostatic Pleated HVAC AC Furnace Air Filter (4 | 4 filter | $39.96 | $9.99 | Amazon → |
| Filtrete 20x30x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1 | 6 filter | $59.99 | $10.00 | Amazon → |
| Filterbuy 20x30x1 Air Filter MERV 8 Dust & Allergy Defense (4-Pack) | 4 filter | $40.46 | $10.12 | Amazon → |
| Filtrete 20x30x1 Air Filter, MERV 8, MPR 700, 4 HVAC Filters | 4 filter | $40.96 | $10.24 | Amazon → |
| Aerostar Air Filter 20x30x1 MERV 13 AC Filter, HVAC, Furnace Filter, 6 Pack | 6 filter | $61.79 | $10.30 | Amazon → |
| BNX TruFilter 20x30x1 Air Filter MERV 8 Dust, Pet & Allergy Defense 4-Pack | 4 filter | $41.39 | $10.35 | Amazon → |
| Filtrete 20x30x1 Air Filter, MERV 12, MPR 1500, 2 HVAC Filters | 2 filter | $29.62 | $14.81 | Amazon → |
| Filtrete 20x30x1 Air Filter, MERV 8, MPR 700, 6 HVAC Filters | 6 filter | $90.10 | $15.02 | Amazon → |
| Filtrete 20x30x1 Air Filter, MERV 11, MPR 1000, 2 HVAC Filters | 2 filter | $32.85 | $16.43 | Amazon → |
| Filtrete 20x30x1 Air Filter, MERV 13, MPR 1900, 2 HVAC Filters | 2 filter | $41.44 | $20.72 | Amazon → |
| Filtrete 20x30x1 Air Filter, MERV 14, MPR 2800, 2 HVAC Filters | 2 filter | $60.38 | $30.19 | Amazon → |
| TRIGHTFILTERS 20x30x1 Air Filter 4 Pack, MERV 8 Pleated HVAC Furnace Filter | 1 filter | $35.99 | $35.99 | Amazon → |
Prices as of 2026-10-24 20:54:36 UTC: Amazon item price (Amazon's own, else its lowest new offer) before shipping and tax, via Keepa. Size comes from Amazon's unit count or the listing title; check the listing before buying. Product prices and availability are accurate as of the date/time indicated and are subject to change. As an Amazon Associate, Sharpest earns from qualifying purchases.
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