Furnace Filters
Best 10x20x1 Furnace Filter (2026): 5 Picks Compared
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For a 10x20x1 furnace filter, the Filtrete leads this list: it pairs MERV 5 with MPR 300 in a 6-pack with an actual size of 9.81 by 19.81 by 0.81 inches. The rest of the list runs from MERV 8 to MERV 13, with different actual sizes and pack counts. Check the exact inches and the MERV grade before ordering, since nominal size alone does not guarantee a fit.
Starting out? See the main guide: Best Furnace Air Filters
Top picks at a glance
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Best OverallFiltrete 10x20x1 Air Filter9.8 View on Amazon -
Runner-UpSimply 10x20x1 Air Filter9.7 View on Amazon -
9.6 View on Amazon -
Also GreatChenzhit (6 Pack) 10x20x1 Air Filter9.3 View on Amazon -
Also GreatMaycold MERV 13 10x20x1 Air Filter9.2 View on Amazon
Compare the specs
Ranked on pack size from each listing, plus how many buyers have rated it. A dash (—) means we could not confirm that figure from the listing.
| Pick | MERV rating | Pack size | Weight | Warranty |
|---|---|---|---|---|
| 1. Filtrete 10x20x1 Air Filter | MERV 5 | 6-pack | — | — |
| 2. Simply 10x20x1 Air Filter | MERV 8 | 6-pack | — | — |
| 3. AIRx Filters 10x20x1 Furnace AC Filter MERV | MERV 11 | 6-pack | — | — |
| 4. Chenzhit (6 Pack) 10x20x1 Air Filter | MERV 13 | 6-pack | — | — |
| 5. Maycold MERV 13 10x20x1 Air Filter | MERV 13 | 4-pack | — | — |
Filtrete 10x20x1 Air Filter
It pairs MERV 5 with MPR 300 in a 6-pack of pleated filters for standard 10x20x1 slots.
- MERV rating: MERV 5
- Pack size: 6-pack
Good for
- Buyers who want a MERV 5 filter for basic dust and lint
- Buyers who want app reminders to change a filter
Skip it if
- You want a MERV rating above 5
- You want a pack larger than 6 filters
It is a pleated polypropylene filter with an actual size of 9.81 by 19.81 by 0.81 inches, sized for 10x20x1 slots. The MERV 5 grade carries MPR 300 and uses 3-in-1 technology to pull in and trap particles. The 6-pack covers 3 months, with a change at least once every 90 days. The slide-in mount fits furnace and air conditioner systems, and the Filtrete Smart App sets 30-, 60-, or 90-day change reminders.
Simply 10x20x1 Air Filter
It pairs MERV 8 with pleated electrostatic media in a 6-pack sized 9.75 by 19.75 by 0.75 inches.
- MERV rating: MERV 8
- Pack size: 6-pack
Good for
- Buyers who want a MERV 8 filter in a 6-pack
- Buyers who want electrostatically charged synthetic media
Skip it if
- You want a MERV rating above 8
- You want a pack smaller than 6 filters
It is a pleated filter with electrostatically charged synthetic media and an actual size of 9.75 by 19.75 by 0.75 inches. The build uses 24-point beverage board with hot-rolled steel wire mesh, and the slide-in mount fits air conditioners, furnaces, and heat pumps. The 6-pack includes an installation guide and lasts up to 3 months.
AIRx Filters 10x20x1 Furnace AC Filter MERV
It pairs MERV 11 with a pleated build made in the USA that captures 85% of particles.
- MERV rating: MERV 11
- Pack size: 6-pack
Good for
- Buyers who want a MERV 11 filter made in the USA
- Buyers who want a filter rated to 180 degrees Fahrenheit
Skip it if
- You want a MERV rating above 11
- You want fewer than 6 filters in a pack
It is a pleated filter with an actual size of 9.50 by 19.50 by 0.75 inches for 10x20x1 systems. The moisture-resistant double-wall beverage board frame withstands temperatures up to 180 degrees Fahrenheit. The 6-pack is made in the USA, with replacement every 60 to 90 days.
Chenzhit (6 Pack) 10x20x1 Air Filter
It pairs MERV 13 with MPR 1900 and FPR 10 equivalence in a 6-pack for 10x20x1 systems.
- MERV rating: MERV 13
- Pack size: 6-pack
Good for
- Buyers who want a MERV 13 filter with MPR 1900 equivalence
- Buyers who want a paper pleated filter in a 6-pack
Skip it if
- You want a MERV rating above 13
- You want a pack smaller than 6 filters
It is a paper pleated filter with an actual size of 9.75 by 19.75 by 0.75 inches, rated MERV 13 and equivalent to MPR 1900 and FPR 10. The slide-in mount fits air conditioners, furnaces, HVAC units, air scrubbers, dehumidifiers, and house vents. Replacement runs every 60 to 90 days, or every 30 days during peak summer and winter. The 6-pack covers standard residential 10x20x1 slots.
Maycold MERV 13 10x20x1 Air Filter
It pairs MERV 13 with individually wrapped pleated filters in a 4-pack sized 9.70 by 19.70 by 0.75 inches.
- MERV rating: MERV 13
- Pack size: 4-pack
Good for
- Buyers who want a MERV 13 filter in a 4-pack
- Buyers who want each filter wrapped on its own
Skip it if
- You want a MERV rating above 13
- You want more than 4 filters in a pack
It is a polyester pleated filter with an actual size of 9.70 by 19.70 by 0.75 inches for standard 10x20x1 slots. The MERV 13 grade captures up to 90% of airborne particles, and the pleated design extends filter lifespan with consistent filtration. The slide-in mount fits air cleaners, air conditioners, air purifiers, and furnaces. Each filter in the 4-pack is individually wrapped in plastic for handling.
How to choose
Check actual size, not nominal size
Every filter here carries the nominal size 10x20x1, but the actual inches differ, so measure your slot against the exact figures. The Filtrete measures 9.81 by 19.81 by 0.81 inches. The Simply and Chenzhit measure 9.75 by 19.75 by 0.75 inches. The AIRx measures 9.50 by 19.50 by 0.75 inches, and the Maycold measures 9.70 by 19.70 by 0.75 inches. A filter that is too large will not slide in, and one that is too small leaves gaps.
Read MERV as capture grade
MERV grades how well a filter captures particles, and a higher number means finer capture. The Filtrete is MERV 5 with MPR 300 for basic dust and lint. The Simply is MERV 8. The Chenzhit and Maycold are MERV 13, with the Chenzhit also rated equivalent to MPR 1900 and FPR 10.
Match pack size and change interval
The Filtrete, Simply, AIRx, and Chenzhit come in 6-packs, while the Maycold comes in a 4-pack. The Filtrete runs 3 months, with a change at least once every 90 days, and the Simply lasts up to 3 months. The AIRx and Chenzhit run 60 to 90 days, with Chenzhit at 30 days during peak summer and winter. Set a reminder for the interval on the pack you pick.
FAQ
What actual size fits a 10x20x1 slot?
The Filtrete measures 9.81 by 19.81 by 0.81 inches, the Simply and Chenzhit measure 9.75 by 19.75 by 0.75 inches, the AIRx measures 9.50 by 19.50 by 0.75 inches, and the Maycold measures 9.70 by 19.70 by 0.75 inches.
What MERV grades do these filters carry?
The Filtrete is MERV 5, the Simply is MERV 8, the AIRx is MERV 11, and the Chenzhit and Maycold are MERV 13.
What change intervals do these filters carry?
The Filtrete runs 3 months, with a change at least once every 90 days. The Simply lasts up to 3 months. The AIRx and Chenzhit run 60 to 90 days, with Chenzhit at 30 days during peak summer and winter.
Do these filters come in packs?
The Filtrete, Simply, AIRx, and Chenzhit come in 6-packs, while the Maycold comes in a 4-pack.
