Best 16x25x1 Furnace Filter

Buy the Amazon Basics 16x25x1 MERV 11 6-pack: $5.73 a filter on November 11, 2026, or $23 to $34 a year. For allergies or pets, buy the Filter King MERV 13 6-pack at $7.99 a filter, if your furnace manual allows MERV 13.[1]

See Aerostar on Amazon

Aerostar 16x25x1 MERV 8 furnace filter

MERV 8

MERV 8 catches dust, lint and pollen at $5.99 a filter. MERV 11 costs $0.26 less today, so buy MERV 11.

Aerostar 16x25x1, 6-pack

$5.99 per filter

$35.95 for 6 · about $24 to $36 a year

A 6-pack of 16x25x1 lasts about 1 to 1.5 years.

Bigger pack, lower price per filter: Filtrete 12-pack, $5.64 each ($67.63).

Check price on Amazon
Amazon Basics 16x25x1 MERV 11 furnace filter

MERV 11

MERV 11 catches fine dust, mold spores and pet dander, and costs $0.26 less a filter than MERV 8.

Amazon Basics 16x25x1, 6-pack

$5.73 per filter

$34.38 for 6 · about $23 to $34 a year

A 6-pack of 16x25x1 lasts about 1 to 1.5 years.

Bigger pack, lower price per filter: AIRx 12-pack, $5.33 each ($63.99).

See Aerostar on Amazon
Filter King 16x25x1 MERV 13 furnace filter

MERV 13

MERV 13 also catches smoke and bacteria, at $2.26 more a filter than MERV 11.

Filter King 16x25x1, 6-pack

$7.99 per filter

$47.94 for 6 · about $32 to $48 a year

A 6-pack of 16x25x1 lasts about 1 to 1.5 years.

See BNX on Amazon

16x25x1 price per filter is the buy-box price divided by the filters in the pack, read November 11, 2026.[3]

By Erin Rose · Updated

Filtrete vs Filterbuy vs our pick, 16x25x1

Filtrete MERV 11 (MPR 1000) is $9.89 a filter in a 2-pack, $4.16 more than our pick, about $40 to $59 a year. Filterbuy MERV 11 is $7.08 a filter in a 12-pack, about $28 to $42 a year.[3]

Filtrete, Filterbuy and our pick for 16x25x1: pack, price per filter and cost a year
FilterPackPer filterA yearBuy
Amazon Basics 16x25x1 MERV 11 furnace filterOur pick: Amazon Basics 16x25x1, MERV 11 6 $5.73 $23 to $34 See Aerostar on Amazon
Filterbuy 16x25x1 MERV 11 furnace filterFilterbuy 16x25x1, MERV 11 12 $7.08 $28 to $42 See Aerostar on Amazon
Filtrete 16x25x1 MERV 11 furnace filterFiltrete 16x25x1 MPR 1000, MERV 11 2 $9.89 $40 to $59 See Aerostar on Amazon
Filter King 16x25x1 MERV 13 furnace filterOur pick: Filter King 16x25x1, MERV 13 6 $7.99 $32 to $48 See BNX on Amazon
Filterbuy 16x25x1 MERV 13 furnace filterFilterbuy 16x25x1, MERV 13 12 $8.16 $33 to $49 See BNX on Amazon
Filtrete 16x25x1 MERV 13 furnace filterFiltrete 16x25x1 MPR 1900, MERV 13 4 $11.28 $45 to $68 See BNX on Amazon

A year of 16x25x1 is 4 to 6 filters (a change every 60 to 90 days). Each row is the lowest 16x25x1 price per filter we read for that brand and MERV on November 11, 2026.

What 16x25x1 means, and what it measures

15.5 × 24.5 real size, inches label: 16 × 25 depth: label 1 in, real about 0.75 in
The label is the size you order by, and a real 16x25x1 filter is a little smaller, so it slides in.[4]
  • Match all three numbers on your old filter. A 16x25x1 is 16 inches wide, 25 tall and 1 deep by its label, and about 15.5 x 24.5 x 0.75 inches in real size, so it drops into the slot with a little room.
  • Depth matters. A 16x25x2 or 16x25x4 is thicker than a 1-inch slot, so only a 16x25x1 goes in. A good fit sits snug, with no gap and no bending.[1]
  • Will MERV 13 work in your furnace? Look for the top MERV on the furnace label or in its manual before you pick MERV 13. Today the 16x25x1 MERV 13 pick costs $2.26 more a filter than MERV 11, or $32 to $48 a year against $23 to $34.

MERV 8, 11 or 13 in 16x25x1: what each catches and what it costs

MERV 13 costs $2.00 more per filter than MERV 8 and $2.26 more than MERV 11. The picks above run $5.99 for MERV 8, $5.73 for MERV 11 and $7.99 for MERV 13.[3]

MERV is a lab score (ASHRAE 52.2). The table gives the EPA minimum for the three scores the 16x25x1 picks above carry.[2]

Minimum capture efficiency by particle size for MERV 8, 11 and 13 (EPA)
MERVSmallest, 0.3–1 microns (smoke, bacteria)Fine, 1–3 microns (fine dust, mold spores)Large, 3–10 microns (pollen, dust)
8not required20% or more70% or more
1120% or more65% or more85% or more
1350% or more85% or more90% or more

We priced 20 16x25x1 listings today, from $5.33 a filter (AIRx) to $11.28 (Filtrete), across MERV 8, 11 and 13. The EPA minimum follows the MERV number, not the brand, so price per filter is the fair way to compare. To convert Filtrete's MPR numbers, see What MERV rating do I need?

All 16x25x1 filters, lowest price per filter first

16x25x1 furnace filters on Amazon with MERV, pack, price and price per filter
FilterMERVPackPricePer filterBuy
AIRx 11 12 $63.99 $5.33 See Aerostar on Amazon
Filtrete 8 12 $67.63 $5.64 Check price
Amazon Basics 11 6 $34.38 $5.73 See Aerostar on Amazon
Aerostar 8 12 $70.99 $5.92 Check price
Aerostar 8 6 $35.95 $5.99 Check price
Filterbuy 8 12 $71.88 $5.99 Check price
Simply 11 6 $39.97 $6.66 See Aerostar on Amazon
Aerostar 11 6 $39.99 $6.67 Check price
BNX 8 6 $41.96 $6.99 Check price
Filterbuy 11 12 $84.96 $7.08 See Aerostar on Amazon
Show all 20 16x25x1 filters
The rest of the 16x25x1 furnace filters on Amazon, by price per filter
FilterMERVPackPricePer filterBuy
Filter King 8 6 $44.94 $7.49 Check price
BNX 11 6 $45.96 $7.66 See Aerostar on Amazon
Filter King 13 6 $47.94 $7.99 See BNX on Amazon
Filterbuy 13 12 $97.92 $8.16 See BNX on Amazon
Aerostar 13 6 $49.97 $8.33 See BNX on Amazon
Simply 13 6 $52.27 $8.71 See BNX on Amazon
Filterbuy 8 4 $35.96 $8.99 Check price
Filtrete 11 2 $19.79 $9.89 See Aerostar on Amazon
BNX 13 4 $44.96 $11.24 Check price
Filtrete 13 4 $45.11 $11.28 See BNX on Amazon

Each 16x25x1 filter's size, MERV and pack count come from its listing title. 16x25x1 prices read November 11, 2026; they change, so the button shows today's.

Frequently asked

Which MERV goes in a 16x25x1 slot?
MERV 11 at $5.73 a filter (Amazon Basics 6-pack), about $23 to $34 a year at 4 to 6 changes. MERV 13 is $7.99 (Filter King 6-pack). The EPA says to choose MERV 13 or the highest your system accommodates, so read your furnace manual for its top MERV. [2][1]
How big is a 16x25x1 filter really?
Real size is 15.5 x 24.5 inches and 0.75 deep. Modern Air Filters lists about 15.5 x 24.5 x 0.75; the BNX listing prints 15.69 x 24.69 x 0.75. Measure your slot, or look for 16x25x1 on your old filter. [4][3]
Can a thicker filter go in a 16x25x1 slot?
No. A 16x25x2 is twice as deep as the slot and a 16x25x4 is four times as deep. Match the 16x25x1 printed on the edge of your old filter.
When should I change a 16x25x1?
The EPA says makers recommend a new 1-inch filter every 60 to 90 days, so an Amazon Basics 6-pack lasts 1 to 1.5 years. Change it early with pets, smoke or heavy dust. [1]
Is a bigger pack of 16x25x1 filters cheaper?
For MERV 11, the Amazon Basics 6-pack is $5.73 a filter and the AIRx 12-pack is $5.33, $0.40 less a filter. A 12-pack of 16x25x1 is 2 to 3 years of filters, so buy it only if you will use them. [3]

Where these numbers come from

  1. 1

    U.S. EPA: Guide to Air Cleaners in the Home (furnace and HVAC filters)

    Read October 28, 2026. "Select a filter rated at least MERV 13 or as high as your system will accommodate"; "Most furnaces and HVAC systems can accommodate a MERV 13 filter without creating equipment problems, provided that the filter is replaced frequently"; makers "typically recommend replacement every 60 to 90 days"; the filter should fit snugly, with no bending or crushing.

  2. 2

    U.S. EPA: What is a MERV rating?

    Read October 28, 2026. The capture table below is copied from the EPA table for MERV 8, 11 and 13.

  3. 3

    Amazon.com product listings (size, MERV and pack from each listing title; price, seller and stock from the buy box)

    Buy boxes read November 11, 2026. Prices change; the button shows today's. Filtrete's MERV equivalents (MPR 1000 = MERV 11, MPR 1900 = MERV 13) are taken from each listing's title.

  4. 4

    Modern Air Filters: 16x25x1 air filter

    Read October 28, 2026. Actual size about 15.5 x 24.5 x 0.75 inches; order by the nominal 16x25x1; MERV 8, 11 and 13 pleated filters; a pleated filter typically lasts 60 to 90 days.

Related: furnace filters in every size · what MERV rating do I need? · is MERV 13 too restrictive? · 4-inch filters for Aprilaire, Honeywell and Lennox cabinets