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Deal.ai › Aerostar
Aerostar
20x25x1 Aerostar Air Filter
Aerostar

20x25x1 Aerostar Air Filter

4.9(97 ratings)

Best price now

$99.99at AmazonObserved at 9:51 PM

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Our take on the 20x25x1 Aerostar Air Filter

The Aerostar 20x25x1 is a basic pleated furnace and AC filter with a MERV 6 rating and electrostatically charged synthetic media. It catches larger debris like dust, lint and pollen but not fine particles or smoke, so it suits homes without allergy concerns. The best new price is $99.99 at Amazon as of November 7, 2026, with only one store listing it new, so there is no recent range to compare against.

Best forBudget furnace and AC filter changesRentals and light-use homesHouseholds without allergy or asthma concernsBuyers who want a simple 1-inch pleated filter
Pros
  • MERV 6 traps dust, lint and pollen without straining most blowers
  • Electrostatically charged media helps hold larger particles
  • Standard 20x25x1 nominal size fits many common return grilles
  • Rated for a 60-90 day change interval
  • High owner rating of 4.9 from 97 ratings
Cons
  • MERV 6 misses fine particles, smoke and most allergens
  • MPR 600 / FPR 5 is a low filtration tier
  • Only one store lists it new, so price competition is thin
  • Actual size is slightly under nominal, which can leave small gaps

20x25x1 Aerostar Air Filter prices at every store

  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $99.99Free shippingObserved at 9:51 PM
    Visit Amazon

Also available at

  • Aerostar Air FiltersCheck price at Aerostar Air Filters
  • AeroStarCheck price at AeroStar
  • airfiltersdelivered.comCheck price at airfiltersdelivered.com
  • Factory Direct FiltersCheck price at Factory Direct Filters

20x25x1 Aerostar Air Filter price history

Lowest price we've seen: $31.97 on Nov 8 at airfiltersdelivered.com. Tracked across 4 stores since Nov 8.

What reviewers say

  • 4.9 / 597 ratings

Owners rate the Aerostar 20x25x1 highly, with 4.9 out of 5 from 97 ratings. Most comments center on fit and value as a routine replacement filter.

What people mention
  • FitPraisedOwners say it drops into standard 20x25x1 grilles without trimming.
  • ValuePraisedBuyers see it as a cheap way to keep up with regular filter changes.
  • FiltrationMixedIt handles dust and pollen, but owners note it does little for fine particles or smoke.

About the 20x25x1 Aerostar Air Filter

The Aerostar 20x25x1 pleated air filter delivers clean air by replacing your air system’s vent intake filter. Designed to work with most home and office AC and furnace systems with compatible intake vent sizes, filtering out dust, pollen, bacteria, and other airborne particles. Great indoor air quality is as easy as changing your air filter to Aerostar.

Specifications

Type
Furnace
Actual Size
19 3/4"x24 3/4"x3/4"Source
Air Filter Type
Electrostatically Charged Synthetic MediaSource
Change Frequency
Every 60-90 DaysSource
FPR Rating
FPR 5Source

Questions and answers

Is MERV 6 enough for a home with allergies?
No. MERV 6 captures particles in the 3-10 micron range, so it misses fine dust, smoke and most pollen allergens. Allergy sufferers usually want MERV 11 or higher.
How often should I change it?
Aerostar recommends every 60 to 90 days. Change sooner if you have pets, heavy dust or run the system constantly.
Will it fit my 20x25x1 return grille?
The actual size is 19 3/4 by 24 3/4 by 3/4 inches, slightly under nominal. That is normal for 1-inch filters and fits most standard grilles.
Is this the same as MPR 600 or FPR 5?
Yes. Aerostar lists it as MPR 600 and FPR 5, which are store-specific ratings roughly matching MERV 6.
Is $99.99 a good price?
That is the only new price listed, at Amazon as of November 7, 2026, and it is high for a single MERV 6 filter. Compare against multi-packs before buying.
Does it work in both furnaces and AC units?
Yes. It is a standard 1-inch pleated filter for most home and office furnace and AC return intakes.
Where is the 20x25x1 Aerostar Air Filter cheapest?
At Amazon, for $99.99, as of our latest check.
What do buyers say about the 20x25x1 Aerostar Air Filter?
Rated 4.9 out of 5 from 97 ratings.
Where can I buy the 20x25x1 Aerostar Air Filter?
4 stores we checked sell it, including Amazon, Aerostar Air Filters, airfiltersdelivered.com, Factory Direct Filters.

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All Aerostar deals and products →
Captured Particle Size
3-10 MicronsSource
Capacity
Standard CapacitySource
MPR Rating
MPR 600Source
Nominal Size
20 x 25 x 1Source
MERV Rating
6Source
Microparticle Performance Rating
300Source
Thickness
1 inSource