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expired Posted by Meowssi | Staff • Feb 27, 2025
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expired Posted by Meowssi | Staff • Feb 27, 2025

4-Pack Aerostar 20" x 20" x 1" MERV 13 Pleated Air Filter

$20

$46

56% off
Amazon
31 Comments 15,200 Views
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Deal Details
Amazon has 4-Pack Aerostar 20" x 20" x 1" MERV 13 Pleated Air Filter on sale for $20.38. Shipping is free w/ Prime or on $35+ orders.

Walmart also has 4-Pack Aerostar 20" x 20" x 1" MERV 13 Pleated Air Filter on sale for $20.38. Shipping is free w/ Walmart+ (free 30-day trial) or on orders of $35+.

Thanks to Deal Hunter Meowssi for finding this deal.

Features:
  • Nominal: 20 x 20 x 1, Size: 19 3/4"x19 3/4"x3/4" 20x20x1, AC Furnace Air Filter
  • Comparable to 3M Filtrete MPR 1500 to 1900 Ultimate Allergen Defense
  • Comparable to Honeywell Allergen Elite FPR 10
  • Fights lint, dust mites, mold spores, pollen, pet dander, fine dust, smoke, viruses, and bacteria.
  • Change frequency 60-90 days.

Editor's Notes

Written by ValPal2011 | Staff

Original Post

Written by Meowssi | Staff
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Amazon has 4-Pack Aerostar 20" x 20" x 1" MERV 13 Pleated Air Filter on sale for $20.38. Shipping is free w/ Prime or on $35+ orders.

Walmart also has 4-Pack Aerostar 20" x 20" x 1" MERV 13 Pleated Air Filter on sale for $20.38. Shipping is free w/ Walmart+ (free 30-day trial) or on orders of $35+.

Thanks to Deal Hunter Meowssi for finding this deal.

Features:
  • Nominal: 20 x 20 x 1, Size: 19 3/4"x19 3/4"x3/4" 20x20x1, AC Furnace Air Filter
  • Comparable to 3M Filtrete MPR 1500 to 1900 Ultimate Allergen Defense
  • Comparable to Honeywell Allergen Elite FPR 10
  • Fights lint, dust mites, mold spores, pollen, pet dander, fine dust, smoke, viruses, and bacteria.
  • Change frequency 60-90 days.

Editor's Notes

Written by ValPal2011 | Staff

Original Post

Written by Meowssi | Staff

Community Voting

Deal Score
+23
Good Deal
Visit Amazon

Price Intelligence

Model: Aerostar 20x20x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 4 Pack (Actual Size: 19 3/4" x 19 3/4" x 3/4")

Current Prices

Sort: Lowest to Highest | Last Updated 6/24/2025, 02:26 AM
Sold By Sale Price
Amazon$41.40

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Top Comments

Nintendo1474
Oh boy, not this again.

They compensate for the more restrictive filter material by using pleats. The lower MERV filters are flatter. More surface area means more paths for the air to go through. It's not exactly the same, but it's not gonna kill your fan unless you don't replace it when it's clogged.
a2bondfn
Never have I seen the SD experience quite described so clearly
Return0fTheKing
Are either of you previous two comments HVAC specialists? Trying to figure out which stranger to believe

30 Comments

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Feb 27, 2025
549 Posts
Joined Feb 2016
Feb 27, 2025
slickaroon
Feb 27, 2025
549 Posts
Great price for merv 13. Thanks!
Feb 27, 2025
190 Posts
Joined Mar 2015
Feb 27, 2025
JayD3014
Feb 27, 2025
190 Posts
Super cheap for MERV 13. Seems to be a legit brand, though not the best.
Feb 28, 2025
40 Posts
Joined Nov 2010
Feb 28, 2025
pioneer732
Feb 28, 2025
40 Posts

Our community has rated this post as helpful. If you agree, why not thank pioneer732

Do not buy these if you're system wasn't designed for high Merv filters… you really only need 5-6 if you have older equipment. Better air flow and machine doesn't have to work as hard.
1
Feb 28, 2025
663 Posts
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Feb 28, 2025
Nintendo1474
Feb 28, 2025
663 Posts

Our community has rated this post as helpful. If you agree, why not thank Nintendo1474

Quote from pioneer732 :
Do not buy these if you're system wasn't designed for high Merv filters… you really only need 5-6 if you have older equipment. Better air flow and machine doesn't have to work as hard.
Oh boy, not this again.

They compensate for the more restrictive filter material by using pleats. The lower MERV filters are flatter. More surface area means more paths for the air to go through. It's not exactly the same, but it's not gonna kill your fan unless you don't replace it when it's clogged.
Last edited by Nintendo1474 February 28, 2025 at 07:21 AM.
3
3
Feb 28, 2025
452 Posts
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Feb 28, 2025
Return0fTheKing
Feb 28, 2025
452 Posts
Are either of you previous two comments HVAC specialists? Trying to figure out which stranger to believe
11
Pro
Feb 28, 2025
1,117 Posts
Joined Dec 2009
Feb 28, 2025
a2bondfn
Pro
Feb 28, 2025
1,117 Posts
Quote from Return0fTheKing :
Are either of you previous two comments HVAC specialists? Trying to figure out which stranger to believe
Never have I seen the SD experience quite described so clearly
3
Feb 28, 2025
41 Posts
Joined Apr 2011
Feb 28, 2025
biggzzz7
Feb 28, 2025
41 Posts
Thanks, going to give these a shot

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Feb 28, 2025
1,417 Posts
Joined Jan 2018
Feb 28, 2025
Sugartoes
Feb 28, 2025
1,417 Posts
Quote from Return0fTheKing :
Are either of you previous two comments HVAC specialists? Trying to figure out which stranger to believe
lol. I'm going with the first comment. Not all merv13 filters have way more pleats like the filtrete ones. If your system is older, I would go with merv 8 or lower or filtrete brand merv 13.
Feb 28, 2025
8 Posts
Joined Jul 2021
Feb 28, 2025
UniqueAppliance567
Feb 28, 2025
8 Posts
Project Farm on YouTube did a review on all of these filters and a good quality 3M or Honeywell does a better job of filtration along with less strain on the HVAC system. Most of the cheaper ones only do a great job of putting a lower strain on the HVAC system. Not much in terms of particle filtration.
Feb 28, 2025
1,911 Posts
Joined Aug 2005
Feb 28, 2025
tunnie
Feb 28, 2025
1,911 Posts

Our community has rated this post as helpful. If you agree, why not thank tunnie

Quote from Return0fTheKing :
Are either of you previous two comments HVAC specialists? Trying to figure out which stranger to believe
Believe the first, I had a 2018 unit put a brand new Merv 13; I started to get icing. Thought it was my unit. Had a bunch of techs come in they all said replace the unit. One finally said put a Merv 8 that one is too restrictive. I did and boom. Worked fine, no icing. I'm still using the same HVAC system now. Yes, I think newer blowers can handle merv13+ no issues but I'm sure it still puts some level of restriction on the airflow meaning the unit will have to work more if not harder.
1
Feb 28, 2025
1,525 Posts
Joined Apr 2016
Feb 28, 2025
Rontron
Feb 28, 2025
1,525 Posts

Our community has rated this post as helpful. If you agree, why not thank Rontron

Great for sticking against 20" box fans
1
2
Feb 28, 2025
72 Posts
Joined Dec 2007
Feb 28, 2025
BrekkFU
Feb 28, 2025
72 Posts
"usually ships within 1-2 months"

Big oof!
Feb 28, 2025
1,223 Posts
Joined Jun 2006
Feb 28, 2025
v0vax
Feb 28, 2025
1,223 Posts
Anyone see any deals on 20x20x20x4?
1
Feb 28, 2025
6 Posts
Joined Jun 2021
Feb 28, 2025
UniquePenguin974
Feb 28, 2025
6 Posts
Good deal. Thanks.

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Feb 28, 2025
2,884 Posts
Joined Dec 2007
Feb 28, 2025
erishun
Feb 28, 2025
2,884 Posts
Quote from Rontron :
Great for sticking against 20" box fans
you can use all 4 and build a Corsi-Rosenthal Box, but 2" are better as the filters end up being "structural".

good for emergency situations (like smoke from a wildfire) https://www.reddit.com/r/Spokane/...box_guide/

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