6x6x1
$35.78
Shop by Filters Size
6X8X1
$35.78
6X10X1
$21.39
6X12X1
$21.39
8x8x1
$27.96
8x10x1
$21.39
8x12x1
$21.39
8x14x1
$27.96
8x16x1
$27.96
8x18x1
$27.96
8x20x1
$27.96
9x11x1
$21.39
10X10X1
$11.21
10X12X1
$21.39
10X14X1
$27.96
10X16X1
$27.96
10X18X1
$29.14
10X20X1
$26.65
10X22X1
$27.96
10X24X1
$31.03
10x25x1
$26.45
10X30X1
$30.11
10X36X1
$35.59
12X12X1
$21.95
12X14X1
$24.95
12X16X1
$30.42
12X18X1
$31.01
12X20X1
$31.01
12X24X1
$22.15
12X30X1
$35.18
12X36X1
$41.01
13X20X1
$31.03
13X21X1
$29.91
13X21.5X1
$29.91
13X22X1
$24.98
14X14X1
$20.75
14X16X1
$23.19
14X18X1
$27.55
14X20X1
$27.45
14X22X1
$31.99
14X24X1
$28.00
14X25X1
$32.11
14X30X1
$38.12
14X36X1
$49.51
15X15X1
$31.61
15X20X1
$27.00
15X24X1
$27.25
15X25X1
$31.00
16X16X1
$25.11
16X18X1
$30.00
16X19X1
$32.75
16X20X1
$22.75
16X21X1
$37.75
16X21.5X1
$32.70
16X22X1
$28.75
16X24X1
$31.00
16X25X1
$25.95
16X30X1
$31.09
16X36X1
$45.95
16.25X21.5X1
$34.75
17X20X1
$31.09
17X22X1
$30.75
17.5X21X1
$21.95
17.5x22x1
$45.00
18X18X1
$29.55
18X20X1
$26.55
18X22X1
$29.95
18X24X1
$27.00
18X25X1
$29.95
18X30X1
$33.11
18.5X21X1
$25.15
18.5X21.5X1
$32.55
18.5X22X1
$32.76
19X19X1
$25.00
19X20X1
$33.95
19X21X1
$25.00
19X21.5X1
$29.95
19X22X1
$32.00
19X23X1
$24.00
19X25X1
$39.11
19.5X21X1
$34.11
19.25X23.25X1
$34.00
19.5x22x1
$45.00
19.875X21.5X1
$27.11
20X20X1
$25.40
20X22X1
$27.55
20x23x1
$29.95
20X23X1
$29.95
20X24X1
$34.11
20X25X1
$27.00
20X30X1
$31.85
20X36X1
$25.35
20.5x22x1
$25.35
21X21X1
$38.79
21X22X1
$38.47
21X23X1
$41.55
21X23.5X1
$41.55
21X24.5X1
$29.37
21.25×21.25×1
$36.65
21.5x22x1
$36.65
21.5X23X1
$43.75
21.5X23.25X1
$38.90
21.5X24X1
$42.33
21.5X24.5X1
$42.33
22X22X1
$33.41
22X24X1
$33.63
22X24X1
$38.47
23x23x1
$29.39
24x24x1
$29.39
24x28x1
$50.71
24x30x1
$29.17
24x36x1
$42.15
24x36x1
$42.15
25x25x1
$30.73
25x32x1
$51.55
28x28x1
$33.59
28x30x1
$41.45
30x30x1
$52.51
30x36x1
$55.19
12X12X2
$22.93
12X24X2
$45.97
14X14X2
$25.93
14X20X2
$43.11
14X24X2
$56.45
14X25X2
$27.93
14X30X2
$56.45
15X20X2
$46.37
16X16X2
$24.93
16X20X2
$37.95
16X24X2
$25.95
16X25X2
$41.75
16X30X2
$35.95
18X18X2
$28.95
18X20X2
$56.45
18X24X2
$26.95
18X25X2
$54.09
18X30X2
$59.75
20X20X2
$39.99
20X22X2
$57.85
20X24X2
$28.45
20X25X2
$57.85
20X30X2
$50.00
20X35X2
$31.95
24X24X2
$49.15
24X30X2
$54.57
25X25X2
$53.50
28X30X2
$67.71
30X30X2
$69.38
30X36X2
$65.76
12X16X4
$49.11
12X20X4
$45.95
12X24X4
$65.99
14X14X4
$34.80
14X20X4
$45.95
14X24X4
$55.13
14X25X4
$66.15
16X20X4
$47.63
16X24X4
$47.03
16X25X4
$39.47
18X18X4
$42.93
18X20X4
$69.37
18X24X4
$54.21
19X19X4
$69.37
20X20X4
$46.85
20X24X4
$39.95
20X25X4
$40.17
20X30X4
$69.93
24X24X4
$57.33
24X25X4
$78.37
25X25X4
$78.37
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Shop By Category
MERV 8 filters these affordable filters capture 90% of dust, pollen, and pet dander. Perfect for homes, businesses, and workplaces, they enhance air quality and HVAC performance. Ideal for environments with pets, MERV 8 filters are your go-to for reliable, budget-friendly air filtration.
MERV 11 filters effectively capture dust, pollen, dust mites, and pet dander, making them ideal for commercial buildings, homes, industrial workplaces, and paint booths. They remove 85% of micron-sized particles, enhancing indoor air quality and maintaining HVAC efficiency. Highly recommended for homes with pets.
MERV 13 filters efficiently capture airborne bacteria, tobacco smoke, and sneeze-released pollutants, along with dust, pollen, dust mites, and pet dander. They trap 90% of micron-sized particles, making them suitable for residential homes, surgical suites, smoking areas, and commercial buildings with advanced HVAC systems.
Shop by Brand Compatibility
Every equipment brand has a “Designfilters” for every unique size. Start by selecting your brand below to find the perfect match for your system.
Welcome to Design Filters, where clean air is not just our passion—it's our promise.
Founded by brothers Stephen and Justin Perez right here in sunny Miami, Florida, Design Filters is the culmination of our lifelong dedication to indoor air safety. Growing up in the heart of South Florida’s air purification industry, we witnessed firsthand the critical importance of effective air filtration.
Reviews From Satisfied Customers
Solutions for Every Size
Design Filters manufactures 4″ pleated air filters that are guaranteed to fit your AC or furnace perfectly. If you don’t find your size listed below, don’t worry! You can easily create a custom filter using our custom filter tool.
Frequently Asked Questions (FAQS)
Q: When should I change my air filter?
Determining when to replace your air filters depends on the air quality levels you wish to maintain indoors. Although Design Filters are designed to last up to 90 days, there are circumstances where you might need to change them more frequently. Various factors influence the ideal time to replace your air filter. For individuals with allergies or asthma, a new filter can significantly enhance indoor air quality. Households with pets or smokers should consider changing air filters more often to ensure fresher air.
If you need assistance or have any questions, feel free to contact us directly at 786-932-1993.
Q: How do i change out my air filter?
Air filters can be found in vents on your interior walls or ceilings, often concealed behind a cover that may be white or painted to blend in. To replace it, open the cover by pulling the lever or latch, remove the old filter, and insert a new one.
For filters located in the AC handler, first turn off your system for safety. Locate the handler unit, typically found in a utility closet or basement. Open the access panel, remove the old filter, and slide in a new one.
If you need assistance or have any questions, feel free to contact us directly at 786-932-1993.
Q: How often should I change out my air filter?
Generally, it’s advisable to replace your air filters every 90 days. However, several factors can influence how often you should change them. For households with smokers, vapers, or pets, it’s beneficial to switch out the filters every 60 days. If someone in your home suffers from allergies or asthma, consider changing the filters monthly to maintain optimal air quality. Using a filter with a higher MERV rating can also help in these situations.
If you have any questions or need assistance, please contact us at 786-932-1993.
Q: What happens if the air filter is backwards or installed incorrectly?
Air filters are designed with a specific direction for airflow to ensure optimal filtration. When installed correctly, air passes through the porous side first, allowing the tight mesh weave to capture and absorb incoming particles efficiently. However, if the filter is installed backwards, the air struggles to pass through the dense mesh, causing the system to work harder. This not only reduces the efficiency of air filtration but also increases energy consumption, leading to higher utility bills. Additionally, the strain on the system can result in potential mechanical damage over time.
For any questions or assistance, feel free to contact us at 786-932-1993.
Q: Will a dirty air filter affect my AC?
Yes, a dirty air filter can significantly impact your AC system over time. As an air filter collects dust and debris, it becomes less efficient, causing your AC to work harder to circulate air. This increased strain can lead to higher energy bills and potential wear and tear on the system. The lifespan of an air filter depends on various factors, including the type of filter, its material, the size of your home, and your daily habits. Filters with higher ratings, such as those using the FPR (Filter Performance Rating) or MERV (Minimum Efficiency Reporting Value) systems, typically last longer and perform better.
For any questions or assistance, feel free to contact us at 786-932-1993.
Q: What happens when the AC filter is dirty?
A dirty air filter clogs up with dirt and debris, making it difficult for air to pass through. This restriction forces your AC system to work harder, consuming more energy and raising your utility bills. Over time, the reduced airflow can cause the air inside your home to become stagnant and less clean, as the system struggles to bring in fresh air. This not only affects indoor air quality but also puts additional strain on the AC unit, potentially leading to mechanical issues.
If you have any questions or need assistance, please contact us at 786-932-1993.
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