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Filterbuy 16x20x4 Air Filter MERV 13 Optimal Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 15.38 x 19.38 x 3.63 Inches)

4.1 4.1 out of 5 stars 219 ratings

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Purchase options and add-ons

Brand Filterbuy
Material Polyester, Aluminum, Plastic
Product Dimensions 15.38"L x 19.38"W x 3.63"Th
MERV Rating 13.00
Compatible Devices Heat Pump, Air Conditioner, Air Cleaner, Furnace
Item Weight 12 Pounds
Product Grade Replacement Parts

About this item

  • 16x20x4 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 15.38" x 19.38" x 3.63")
  • MERV 13 synthetic media (comparable with MPR 1500 - 1900 & FPR 10) protects homes from bacteria and more by trapping 98% 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
3.5 3.5
Sturdiness
3.2 3.2
Value for money
2.9 2.9

Frequently bought together

$93.88 ($23.47/Count)
Get it as soon as Monday, Mar 25
In Stock
Ships from and sold by Filterbuy.
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Filterbuy 16x20x4 Air Filter MERV 13 Optimal Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 15.38 x 19.38 x 3.63 Inches)
Filterbuy 16x20x4 Air Filter MERV 13 Optimal Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 15.38 x 19.38 x 3.63 Inches)
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Filterbuy 16x20x4 Air Filter MERV 8 Dust Defense (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 15.38 x 19.38 x 3.63 Inches)
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Price$93.88$37.15$72.12$76.99$131.88$47.66
Delivery
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Customer Ratings
Easy to install
3.5
4.6
4.8
4.5
Sturdiness
3.2
4.1
4.6
4.3
Value for money
2.9
4.2
4.6
4.2
Sold By
Filterbuy
Filterbuy
Filterbuy
Filter Pro
Filterbuy
Filterbuy
compatible devices
Air Conditioner, Furnace, Heat Pump, Air Cleaner
Air Conditioner, Furnace, Heat Pump, Air Cleaner
Air Conditioner, Furnace, Heat Pump, Air Cleaner
Air Conditioner, Furnace
Air Conditioner, Furnace, Heat Pump, Air Cleaner
Air Conditioner, Furnace, Heat Pump, Air Cleaner
MERV rating
13
8
13
11
13
8
number of items
1
1
1
1
1
1
material
Plastic, Aluminum, Polyester
Plastic, Aluminum, Polyester
Plastic, Aluminum, Polyester
Carbon Fiber
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 16x20x4 (Actual Size: 15.38 x 19.38 x 3.63 Inches)

platinum merv 13 banner badge

16x20x4 MERV 13

silver merv 8 banner badge

16x20x4 MERV 8

gold merv 11 banner badge

16x20x4 MERV 11

silver merv 8 banner badge

16x25x1 MERV 8 (Popular)

silver merv 8 banner badge

20x20x1 MERV 8 (Popular)

silver merv 8 banner badge

20x25x1 MERV 8 (Popular)

Customer Reviews
4.2 out of 5 stars
970
4.5 out of 5 stars
1,540
4.5 out of 5 stars
504
4.7 out of 5 stars
11,777
4.7 out of 5 stars
13,411
4.7 out of 5 stars
7,985
Recommended Use
Optimal Home & Business Standard Home & Business Superior Home & Business Standard Home & Business Standard Home & Business Standard Home & Business
Comparable Ratings
MPR 1500-1900 & FPR 10 MPR 600 & FPR 5 MPR 1000-1200 & FPR 7 MPR 600 & FPR 5 MPR 600 & FPR 5 MPR 600 & FPR 5
Filtration Effectiveness
98% Airborne Particles 90% Airborne Particles 95% Airborne Particles 90% Airborne Particles 90% Airborne Particles 90% Airborne Particles
Particle Size
0.3 - 1 Microns 3 - 10 Microns 1 - 3 Microns 3 - 10 Microns 3 - 10 Microns 3 - 10 Microns
Dust & Debris
Mold & Pollen
Lint & Dander
Smog & Smoke
Bacteria
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 16x20x4 Air Filter MERV 13 Optimal Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 15.38 x 19.38 x 3.63 Inches)


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Customer reviews

4.1 out of 5 stars
4.1 out of 5
219 global ratings

Customers say

Customers like the value and performance of the air filter. They mention that it works just as well. However, some customers report issues with the size, saying that it's smaller than the specification. Opinions are mixed on quality.

AI-generated from the text of customer reviews

6 customers mention6 positive0 negative

Customers appreciate the value of the air filter. They say it's a good price.

"Has been an excellent filter at a reasonable price." Read more

"works as it should. Great price compared to store price or buying Honeywell filters. Works just as well." Read more

"These are great filters at a great price. Tried another brand and was disappointed. There is far less dust in the house with these." Read more

"Couldn’t find these anywhere but Amazon! And they were at a good price!" Read more

3 customers mention3 positive0 negative

Customers are satisfied with the performance of the air filter. They mention that it works well.

"...Great price compared to store price or buying Honeywell filters. Works just as well." Read more

"Works just fine." Read more

"Does the job perfectly." Read more

14 customers mention6 positive8 negative

Customers are mixed about the quality of the air filter. Some mention it's an excellent filter at a reasonable price, while others say it has terrible quality, the fit is too loose, and the construction is cheap and flimsy.

"...I do not recommend buying there filters. I think they are cheaply made. The quality is not good." Read more

"Has been an excellent filter at a reasonable price." Read more

"Fit is too loose. Construction compared to Honeywell is cheap and flimsy. Filter material appears to be half as good as Honeywell's...." Read more

"overall quality for filtering" Read more

12 customers mention0 positive12 negative

Customers are dissatisfied with the size of the air filter. They mention that it's smaller than the specification and barely fits in their furnace. Some say that the material itself does not seem to fit the class it pretends to be.

"...same as the Honeywell filter I was replacing, it was physically smaller than the Honeywell...." Read more

"Fit is too loose. Construction compared to Honeywell is cheap and flimsy. Filter material appears to be half as good as Honeywell's...." Read more

"...This 16x20x4 filter is to small. That's what I get for trying to go cheap. Won't make that mistake again." Read more

"...Looking at the filter material itself it also does not seems to fit the class it pretends to be. And then the return does not seem to be covered...." Read more

3 customers mention0 positive3 negative

Customers are dissatisfied with the spacing of the pleats and baffles in the air filter. They mention that the pleating is haphazard and irregular.

"The spacing of the pleats is haphazard at best. Can't think that this would be very efficient for air flow and filtering. Will not purchase again." Read more

"...It shouldn't matter too much, but baffles are unevenly spaced. Regretting buying a 4 pack." Read more

"...Smaller than the 16X20x4 Honeywell box filter and the pleats are irregularly spaced. Low-quality, shoddy workmanship." Read more

Much smaller than standard 16x20x4
1 Star
Much smaller than standard 16x20x4
The manufacturer appears to have "rounded" the size to 16x20x4. Unfortunately, a filter that does not fit properly in the filter box does not work. Air passes around the filter rather than through it, and so it is useless. I attached photos of this filter in my filter box as well as compared to my old honeywell so it is apparent that these are not the correct size.
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