Furnace Filters
Best 14x25x1 Furnace Filter (2026): 3 Picks Compared
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For the best 14x25x1 furnace filter, the Filtrete pairs MERV 11 with MPR 1000 in a 2-pack of 3-month pleated filters, with a Smart App for change reminders. The Amazon Basics pairs MERV 5 with a 6-pack, and the Simply pairs MERV 8 with a 4-pack, so pack size and MERV figure narrow the choice first.
Starting out? See the main guide: Best Furnace Air Filters
Top picks at a glance
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Best OverallFiltrete 14x25x1 Air Filter9.8 View on Amazon -
Runner-UpAmazon Basics MERV 5 AC Furnace Air9.5 View on Amazon -
Also GreatSimply 14x25x1 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 14x25x1 Air Filter | MERV 11 | 2-pack | — | — |
| 2. Amazon Basics MERV 5 AC Furnace Air | MERV 5 | 6-pack | — | — |
| 3. Simply 14x25x1 Air Filter | MERV 8 | — | — | — |
Filtrete 14x25x1 Air Filter
It pairs MERV 11 with MPR 1000, a 2-pack of 3-month pleated filters, and a Smart App for reminders.
- MERV rating: MERV 11
- Pack size: 2-pack
Good for
- Buyers who want MERV 11 with MPR 1000
- Owners of 14x25x1 slots who want a 2-pack
Skip it if
- You want a 6-pack for repeat changes
- You want a MERV figure below 11
It pairs MERV 11 with MPR 1000 in a pleated 14x25x1 filter, and its 3-in-1 technology pulls in and traps particles. Change it at least once every 90 days, and the Filtrete Smart App sets 30-, 60- or 90-day reminders. The box holds 2 filters for furnace, air conditioner, or HVAC systems, with an actual size of 13.68x24.68x0.81 in.
Amazon Basics MERV 5 AC Furnace Air
It pairs MERV 5 with a 6-pack, a beverage board frame, and wire mesh support for 14x25x1 slots.
- MERV rating: MERV 5
- Pack size: 6-pack
Good for
- Buyers who want a 6-pack for repeat changes
- Owners of 14x25x1 slots who want MERV 5
Skip it if
- You want a MERV figure above 5
- You want a change interval past 90 days
It is a MERV 5 filter in a 6-pack for 14x25x1 slots, with an actual size of 13.75 x 24.75 x 0.75 in. The beverage board frame with wire mesh support gives durable construction, and the airflow arrow points toward the furnace for a snug fit. Replace it every 60 to 90 days for optimal performance.
Simply 14x25x1 Air Filter
It pairs MERV 8 with a 4-pack, pleated media, and capture of 90% of airborne particles.
- MERV rating: MERV 8
Good for
- Buyers who want MERV 8 with a 4-pack
- Owners of 14x25x1 slots who want pleated media
Skip it if
- You want a MERV figure above 8
- You want a 6-pack for repeat changes
It is a MERV 8 filter in a 4-pack for 14x25x1 slots, with an actual size of 13.75 x 24.75 x 0.75 in. Its electrostatically charged pleated media traps 90% of airborne particles, and its particle size range is 3.0 to 10.0 microns. It gives up to 3 months of filtration, and the box includes an installation guide.
How to choose
Match the size to your slot
Start with the nominal size your slot takes. All three filters are 14x25x1 nominal, with actual sizes that vary slightly: the Filtrete is 13.68x24.68x0.81 in, and the Amazon Basics and Simply are 13.75 x 24.75 x 0.75 in. Check the actual size against your slot before ordering, since a filter sized for one slot will not fit another.
What MERV figures mean
MERV is a scale for how well a filter captures particles, and higher figures capture smaller particles. The Filtrete is MERV 11 with MPR 1000, the Simply is MERV 8, and the Amazon Basics is MERV 5. MERV figures run from 5 to 13 and higher, so compare the figure with the capture claims each maker gives, not the figure alone.
Change intervals and upkeep
Change intervals set how much handling a filter needs. The Filtrete changes at least once every 90 days, with Smart App reminders at 30, 60 or 90 days. The Amazon Basics changes every 60 to 90 days, and the Simply gives up to 3 months of filtration. Match the interval to how much handling you want to do. The Amazon Basics inserts with the airflow arrow pointing toward the furnace.
FAQ
What MERV figures do these filters have?
The Filtrete is MERV 11 with MPR 1000, the Simply is MERV 8, and the Amazon Basics is MERV 5.
What change intervals do these filters list?
The Filtrete changes at least once every 90 days, the Amazon Basics changes every 60 to 90 days, and the Simply gives up to 3 months of filtration.
What size furnace filter do I need?
Match the nominal size to your slot. All three picks here are 14x25x1 nominal, so check your current filter size first.
How many filters come in each box?
The Filtrete comes in a 2-pack, the Simply comes in a 4-pack, and the Amazon Basics comes in a 6-pack.
