Furnace Filters
Best 16x25x1 MERV 11 Furnace Filter (2026): 5 Picks Compared
As an Amazon Associate we earn from qualifying purchases. Specs below come from each product's Amazon listing; we do not test products in person.
For a 16x25x1 MERV 11 furnace filter, the Filtrete leads with MERV 11 and MPR 1000 in a 4-pack, plus a smart app for change reminders. The Aerostar follows with MERV 11 and MPR 1200 in a 6-pack. All five picks carry MERV 11, so compare pack size, actual size and change interval before you buy.
Starting out? See the main guide: Best Furnace Air Filters
Top picks at a glance
-
Best OverallFiltrete 16x25x1 Air Filter9.8 View on Amazon -
9.7 View on Amazon -
Also GreatSimply 16x25x1 Air Filter9.7 View on Amazon -
Also GreatAmazon Basics 16x25x1 Air Filter 6-Pack9.4 View on Amazon -
Also GreatLennox X66709.2 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 16x25x1 Air Filter | MERV 11 | 4-pack | — | — |
| 2. Aerostar Air Filter 16x25x1 MERV 11 AC | MERV 11 | 6-pack | — | — |
| 3. Simply 16x25x1 Air Filter | MERV 11 | 6-pack | — | — |
| 4. Amazon Basics 16x25x1 Air Filter 6-Pack | MERV 11 | 6-pack | — | — |
| 5. Lennox X6670 | MERV 11 | 2-pack | — | — |
Filtrete 16x25x1 Air Filter
It pairs MERV 11 with MPR 1000 in a 4-pack, plus 3-in-1 technology and a smart app for reminders.
- MERV rating: MERV 11
- Pack size: 4-pack
Good for
- Buyers who want MERV 11 with MPR 1000
- Buyers who want a 4-pack with app reminders
Skip it if
- You need a pack larger than 4 filters
- You want MPR above 1000
It uses pleated construction with 3-in-1 technology to pull in and trap particles. The actual size is 15.68 by 24.68 by 0.81 inches, and the pack holds 4 filters. Change it at least once every 90 days, and the smart app sets 30-, 60- or 90-day reminders. It works with furnaces, air conditioners and heating systems.
Aerostar Air Filter 16x25x1 MERV 11 AC
It pairs MERV 11 with MPR 1200 in a 6-pack, plus pleated construction and a beverage board frame.
- MERV rating: MERV 11
- Pack size: 6-pack
Good for
- Buyers who want MERV 11 with MPR 1200
- Buyers who want a 6-pack for standard 1-inch slots
Skip it if
- You need a pack smaller than 6 filters
- You want MPR above 1200
It uses electrostatically charged synthetic media in a pleated design with a beverage board frame and wire backing. The actual size is 15.75 by 24.75 by 0.75 inches, and the pack holds 6 filters. It fits standard 1-inch filter slots, and the listing gives a 2 to 3 month change interval.
Simply 16x25x1 Air Filter
It pairs MERV 11 with MPR 1000 in a 6-pack, plus pleated construction and airflow arrows for install.
- MERV rating: MERV 11
- Pack size: 6-pack
Good for
- Buyers who want MERV 11 with MPR 1000
- Buyers who want a 6-pack for up to 3 months
Skip it if
- You need a pack smaller than 6 filters
- You want MPR above 1000
It uses pleated construction with a beverage board frame and hot-rolled steel wire mesh. The actual size is 15.75 by 24.75 by 0.75 inches, and the pack holds 6 filters with an installation guide. It fits filter slots and return grilles, and filtration lasts up to 3 months.
Amazon Basics 16x25x1 Air Filter 6-Pack
It pairs MERV 11 with a 6-pack, plus electrostatic material and a beverage board frame.
- MERV rating: MERV 11
- Pack size: 6-pack
Good for
- Buyers who want MERV 11 in a 6-pack
- Buyers who want electrostatic material for lint and dust
Skip it if
- You need a pack smaller than 6 filters
- You want a change interval under 60 days
It uses synthetic material that is electrostatically charged, with a beverage board frame and wire mesh support. The actual size is 15.75 by 24.75 by 0.75 inches, and the pack holds 6 filters. Insert it with the airflow arrow toward the furnace or blower, and change it every 60 to 90 days.
Lennox X6670
It pairs MERV 11 with a 2-pack in a 5-inch thickness, plus pleated fiberglass construction.
- MERV rating: MERV 11
- Pack size: 2-pack
Good for
- Buyers who want a Lennox 16 by 25 by 5 inch filter
- Buyers who want MERV 11 in a 2-pack
Skip it if
- You need a filter 1 inch thick
- You need a pack larger than 2 filters
It uses pleated fiberglass construction in a rectangular shape for slide-in mounting. The actual size is 25 by 16 by 5 inches, and the pack holds 2 filters. It works with air conditioners in residential systems, and it carries MERV 11.
How to choose
Match MERV and MPR
MERV and MPR both describe a filter, but they are different scales. All five picks carry MERV 11. The Filtrete and Simply carry MPR 1000, while the Aerostar carries MPR 1200 and FPR 7. Compare MERV across all five, and MPR where the listing gives it.
Check actual size and pack size
Nominal size is not the exact size, so check the actual size before you buy. The Filtrete measures 15.68 by 24.68 by 0.81 inches, and the Aerostar, Simply and Amazon Basics measure 15.75 by 24.75 by 0.75 inches. The Lennox measures 25 by 16 by 5 inches, so it fits a different slot depth. Pack size matters too: the Filtrete holds 4 filters, the Lennox holds 2, and the Aerostar, Simply and Amazon Basics hold 6 each.
Change interval and install
The Filtrete changes at least once every 90 days, the Aerostar every 2 to 3 months, the Simply up to 3 months, and the Amazon Basics every 60 to 90 days. Slide the filter in with the airflow arrow toward the furnace or blower, and check the slot size before you buy.
FAQ
What does MERV 11 mean for these filters?
MERV is a scale for filter capture, and each pick here carries MERV 11. The Filtrete and Simply also carry MPR 1000, while the Aerostar carries MPR 1200 and FPR 7. Match the figure to your system.
When should I change these filters?
The Filtrete changes at least once every 90 days, the Aerostar every 2 to 3 months, the Simply up to 3 months, and the Amazon Basics every 60 to 90 days. Follow the interval for the filter you buy.
Do these filters fit a 1-inch slot?
The Filtrete, Aerostar, Simply and Amazon Basics measure under 1 inch thick, while the Lennox measures 5 inches thick. Check the actual size against your slot before you buy.
How many filters come in each pack?
The Filtrete pack holds 4 filters, the Aerostar, Simply and Amazon Basics packs hold 6 each, and the Lennox pack holds 2 filters. A larger pack covers more change cycles.
