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Filterbuy 12x20x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 11.50 x 19.50 x 0.75 Inches)

4.7 4.7 out of 5 stars 3,327 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Furnace Filters by Filterbuy

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Purchase options and add-ons

Brand Filterbuy
Material Polyester, Aluminum, Plastic
Product Dimensions 11.5"L x 19.5"W x 0.75"Th
MERV Rating 8.00
Compatible Devices Heat Pump, Air Conditioner, Air Cleaner, Furnace
Item Weight 1.2 Pounds
Product Grade Replacement Parts

About this item

  • 12x20x1 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 11.50" x 19.50" x 0.75")
  • MERV 8 synthetic media (comparable with MPR 600 & FPR 5) protects homes from dust, pollen, and more by trapping 90% of airborne particles without impacting air flow
  • High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products lifespan by 3 times that of fiberglass models
  • Industrial-grade beverage board frames with dual wire backings outperform standard cardboard designs
  • All components are manufactured within the United States and designed with recyclable materials
See more product details

Customer ratings by feature

Easy to install
4.8 4.8
Sturdiness
4.6 4.6
Value for money
4.5 4.5

Frequently bought together

$31.64 ($7.91/Count)
Get it as soon as Tomorrow, Mar 28
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$31.12 ($7.78/Count)
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$32.92 ($8.23/Count)
Get it as soon as Tomorrow, Mar 28
In Stock
Ships from and sold by Filterbuy.
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This Item
Filterbuy 12x20x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 11.50 x 19.50 x 0.75 Inches)
Filterbuy 12x20x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 11.50 x 19.50 x 0.75 Inches)
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Filterbuy 20x20x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 19.50 x 19.50 x 0.75 Inches)
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Filterbuy 16x25x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 15.50 x 24.50 x 0.75 Inches)
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Price$31.64$30.48-7% $40.72
List:$43.57
$34.95-23% $31.48
List:$40.92
-23% $32.28
List:$41.96
Delivery
Get it as soon as Tomorrow, Mar 28
Get it as soon as Tomorrow, Mar 28
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Tomorrow, Mar 28
Get it as soon as Tomorrow, Mar 28
Customer Ratings
Easy to install
4.8
5.0
4.5
4.6
4.8
4.8
Sturdiness
4.6
4.6
4.0
4.3
4.6
4.7
Value for money
4.5
4.4
4.2
4.4
4.6
4.7
Sold By
Filterbuy
Filterbuy
Amazon.com
Amazon.com
Filterbuy
Filterbuy
compatible devices
Air Conditioner, Furnace, Heat Pump, Air Cleaner
Air Conditioner, Furnace, Heat Pump, Air Cleaner
Furnace, Air Conditioner
Air Conditioner, Furnace, Heat Pump
Air Conditioner, Furnace, Heat Pump, Air Cleaner
Air Conditioner, Furnace, Heat Pump, Air Cleaner
MERV rating
8
8
8
8
8
8
number of items
1
1
1
6
1
1
material
Plastic, Aluminum, Polyester
Plastic, Aluminum, Polyester
Pleated
Electrostatically Charged Synthetic Pleated Media
Plastic, Aluminum, Polyester
Plastic, Aluminum, Polyester

From the brand


Product Description

smiling man piggybacks daughter in clean house as filterbuy air filters help them breathe freely

Replacement Air Filter 12x20x1 (Actual Size: 11.50 x 19.50 x 0.75 Inches)

silver merv 8 banner badge

12x20x1 MERV 8

gold merv 11 banner badge

12x20x1 MERV 11

platinum merv 13 banner badge

12x20x1 MERV 13

black merv 8 odor eliminator banner badge

12x20x1 Odor Eliminator

Customer Reviews
4.7 out of 5 stars
3,327
4.7 out of 5 stars
532
4.6 out of 5 stars
374
4.3 out of 5 stars
54
Recommended Use
Standard Home & Business Superior Home & Business Optimal Home & Business Standard Home & Business
Comparable Ratings
MPR 600 & FPR 5 MPR 1000-1200 & FPR 7 MPR 1500-1900 & FPR 10 MPR 600 & FPR 5
Filtration Effectiveness
90% Airborne Particles 95% Airborne Particles 98% Airborne Particles 90% Airborne Particles
Particle Size
3 - 10 Microns 1 - 3 Microns 0.3 - 1 Microns 3 - 10 Microns
Dust & Debris
Mold & Pollen
Lint & Dander
Smog & Smoke
Bacteria
Odors
anatomy of an air filter blown out photo where the wiring pleats and frame are all shown separately

Choosing the Correct Filter Size

zoomed photo of white air filter frame showing nominal and actual size of 16x16x1 filter in green

Nominal Size vs. Actual Size

The nominal size is a shorthand number rounded to the nearest whole or half inch, normally in a larger font (ex: 16 x 16 x 1). Whereas the actual size is an exact measurement, normally in a smaller font, that depicts the filter's precise dimensions (ex: 15.75 x 15.75 x .75). All filters have both.

smiling man in blue holds extended tape measure in front of him to show how to measure an air filter

Measuring Your Air Filters

If your current air filter does not have a dimension listed on the frame, use a tape measure to record the length x width x depth to find the actual size. Then round these measurements up to the nearest inch to find a corresponding nominal size, which will be easier to locate when searching online.

Why should I change my air filter?

To maintain a healthy lifestyle, as breathing dirty air can put you at risk to develop asthma, allergies, and other respiratory ailments. Plus, old filters can cause system defects which may lead to unwanted expenses via energy costs and repairs.

Will these air filters fit my system?

Most of our filters are universally compatible, and will work with virtually any furnace, air conditioner, heat pump, or HVAC system. But if you see a specific brand name like Honeywell within a product title, then it is designed for an exact model.

How do I change my air filter?

Once you find the right size, turn off your power supply and remove the cover from your intake vent. You can then take out the old filter and dispose of it safely. Finally, just insert your new filter, replace the cover, and turn the power back on.

How often should I change my air filter?

We generally recommend replacing your filter every 90 days to keep your system running efficiently and air clean. But, this is subject to change based on filter size and variable factors for pet owners, allergy-sufferers, homes with children, etc.

How many air filters do I need?

This varies for every customer depending on specific needs like those referenced in the prior answer. However, our selection includes package quantities that range from 1 to 12 filters, so no matter what your situation may be, we've got you covered.

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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Filterbuy 12x20x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 11.50 x 19.50 x 0.75 Inches)


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Customer reviews

4.7 out of 5 stars
4.7 out of 5
3,327 global ratings

Customers say

Customers like the fit, value, quality and ease of installation of the HVAC air filter. For example, they mention that it fits perfectly, it's good value and that it'll pop right in.

AI-generated from the text of customer reviews

142 customers mention139 positive3 negative

Customers are satisfied with the quality of the air filter. They mention that it does a great job, is heavy-duty, and reliable. Some say that the filters are sturdy and easy to pop right in. Overall, most are happy with their purchase and recommend it to others.

"The filters were exactly as advertised, work perfectly and reasonably priced. A great experience." Read more

"Good quality" Read more

"Great product. Description is accurate." Read more

"...I accepted the order. The filters are fine, but now I have enough for a year." Read more

93 customers mention86 positive7 negative

Customers appreciate the value of the air filter. They mention that it works well and is good quality at a good price.

"The filters were exactly as advertised, work perfectly and reasonably priced. A great experience." Read more

"Easy to find,quick delivery and price" Read more

"Good price" Read more

"I ordered these before and they work great...4 pack at a great value price.Definitely recommend" Read more

51 customers mention39 positive12 negative

Customers like the fit of the air filter. They say it fits perfectly, is sized correctly, and easy to install. Customers also mention that it's convenient to find the right size.

"Exactly what I needed fits perfectly.Will order again." Read more

"...They operate fine and are sized as advertised...." Read more

"...These fit just right." Read more

"...One complaint I have is that the measurement wasn't exact. My filters were to be 12x20x1, but were closer to 11x19x1...." Read more

24 customers mention24 positive0 negative

Customers find the installation of the air filter to be easy. They mention that the filters are sturdy, and easy to pop right in. Customers also appreciate the great price and convenient installation process.

"Helpful. Easy to order." Read more

"Quick easy and great value" Read more

"...They were reasonably priced. Easy to pop right in and filters were sturdy." Read more

"...able to receive these in the mail without having to remember is extremely convenient and the price for them is great too" Read more

7 customers mention7 positive0 negative

Customers are satisfied with the cleanliness of the air filter. They mention that it keeps their home dust free and perfectly packaged.

"Catches a lot of dust and doesnt give so easily" Read more

"...dirt on the filter and the air seems filtered enough, no unusual dust being passed through or anything...." Read more

"These are great! Wonderful value. They keep the dust out without over straining the HVAC. I’ll keep buying these as long as they are available." Read more

"It keeps my home dust free." Read more

7 customers mention4 positive3 negative

Customers have mixed opinions about the filtering of the air filter. Some mention that the air seems filtered enough, with no unusual dust being passed. They also say that the filters allow for the proper airflow for the a/c, and they feel good about the air quality in their home. Others however, say that it blocks too much air flow and causes their ac unit to freeze up.

"...So I can see dirt on the filter and the air seems filtered enough, no unusual dust being passed through or anything...." Read more

"Seems to block too much air for my needs even while brand new." Read more

"...I feel good about the air quality in my home because these filters are effective." Read more

"...have bought a lot of filters, this is the only filter that has restricted my airflow and caused my heater to go into a short cycle which means that..." Read more

Good Value
4 Stars
Good Value
Since 12x20 filters are not that common, these ones are a great deal compared to the mark up at most retailers. They operate fine and are sized as advertised. The diagonal cardboard braces are much larger than they appear in the product photo and probably cover 20% of the filter pleat area so it restricts airflow a bit more than more expensive filters with wire cross braces.
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Top reviews from the United States

Reviewed in the United States on January 4, 2024
Reviewed in the United States on March 17, 2024
Reviewed in the United States on July 21, 2023
Reviewed in the United States on July 28, 2023
Reviewed in the United States on November 14, 2023
Reviewed in the United States on December 1, 2023

Top reviews from other countries

Translate all reviews to English
Gerry
5.0 out of 5 stars Product was as described
Reviewed in Canada on February 11, 2024
Michael Grohn
5.0 out of 5 stars You get exactly what you order
Reviewed in Canada on May 18, 2023
Bill
5.0 out of 5 stars Good filters
Reviewed in Canada on May 19, 2022
Daniele marceau
4.0 out of 5 stars Arrivés brisés mais encore installables
Reviewed in Canada on December 17, 2022
John H.
5.0 out of 5 stars Value Buy
Reviewed in Canada on July 18, 2021