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Actual Size: 9.5x19.5x3.75"
3 month filters
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Made in the USA
Ships in 24 hours
Available In MERV Rating: 8, 11, 13
Made in the USA
Ships in 24 hours
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 MERV 8 |  MERV 11 |  MERV 13 | |
|---|---|---|---|
| Best for | Standard Residential/Commercial Healthy Families | Superior Residential/Commercial Allergy Sufferers | Optimal Residential/Commercial Hospital Grade |
| Comparable ratings | MPR 600 & FPR 5 | MPR 1000-1200 & FPR 7 | MPR 1500 - 1900 & FPR 10 |
| Filtration | Captures 90% of Airborne Particles | Captures 95% of Airborne Particles | Captures 98% of Airborne Particles |
| Dust, lint & debris | |||
| Mold, pollen | |||
| Dander, dust mites | |||
| Smoke & Smog | |||
| Bacteria | |||
| Odor, vocs |
Generally, we recommend you replace your air filters every 90 days. Find out below if you should change your filters more often.
Change your filter every
6 weeks
to ensure indoor air quality is at its best.
Change your filter every
2 months
to avoid shedding and odor buildup.
Change your filter every
2-3 months
as having clean air is even more important with children in your home.
Change your filter every
6 weeks
to ensure indoor air quality is at its best.
Change your filter every
2 months
to avoid shedding and odor buildup.
Change your filter every
2-3 months
as having clean air is even more important with children in your home.
Indoor air quality affects daily comfort, especially in homes with pets. Many rely on purifiers or frequent cleaning. Many overlook one of the most effective solutions: a high-efficiency air filter.
Standard filters often miss microscopic allergens. The high-performance models featured here are designed to trap the tiny airborne particles that trigger allergies.
This guide will help you find a filter that transforms your home into a cleaner and healthier space.
MERV 13 filters capture pet allergens.
Real relief seen in days.
4" depth = better performance.
Replace every 60–90 days.
In homes with pets, pet dander is a proven respiratory irritant. It is one of the causes of asthma, especially in children and older adults.
We’ve consistently seen that standard filters just don’t cut it. Upgrading to Filterbuy high-quality MERV-rated filters produces results in just a few days. Filters like these trap microscopic dander and airborne proteins.
What made the biggest difference in this case wasn’t just the MERV rating—it was the 4-inch depth of the Filterbuy air conditioner filter 10x20x4. That extra surface area gives allergens fewer places to hide. They have more chances to get trapped. When you live with shedding pets, a filter like this doesn’t just clean your air. It changes how you feel in your own home.
NIEHS confirms MERV-rated filters are essential for pet allergen control. In-field tests show that deeper filters reduce airborne particles by up to 60%. Filterbuy 10x20x4 MERV-rated filter captures at least 50% of particles 0.3–1.0 microns. This includes allergens like pet dander and hair proteinsFilterbuy offers replacements in MERV 8, 11, and 13.
Filterbuy 10x20x4 air filter MERV 8 for basic filtration
Filterbuy 10x20x4 air filter MERV 11 for improved air quality
Filterbuy 10x20x4 air filter MERV 13 for maximum protection against allergens, bacteria, and smoke particles
For allergy relief in a pet-loving home, Filterbuy 10x20x4 pleated air filter is not just smart—it’s essential.
Maintaining Filterbuy air conditioner filter 10x20x4 improves your home's air quality by reducing airborne particles.
Dust Containment: Filterbuy 10x20x4 pleated air filter traps dust. Stopping it from spreading in your home. You'll have less dust and particles in your air.
Allergy Mitigation: They trap pet dander and mold. Making you easier to breathe.
Scent Neutralization: They absorb unwanted odors. Creating a more pleasant indoor atmosphere.
Infection Control: Filterbuy 10x20x4 air filter for allergies to catch harmful bacteria and viruses. Meaning reduced disease spread.
Changing your filter is simple:
Turn off your HVAC.
Locate the filter slot.
Remove the old filter. Note the direction of the airflow arrows.
Slide the best 10x20x4 air filter. Ensure the airflow arrows are pointing in the correct direction.
Replace your filter every 2-3 months, or more often if you have pets, allergies.
Here at Filterbuy, we believe in better air for all.
We're a family-owned company. Passionate about providing clean air for every home in America. We offer a wide range of air filters in every size imaginable, including hard to find custom options.
That's why we offer fast and free shipping straight to your door. Plus, all our filters are proudly made right here in the USA. We use the highest quality American-made materials. We're proud of the products we sell with over 85,000 5-star reviews from happy customers.
A high-efficiency pleated filter with a MERV 13 rating is ideal. It captures pet dander, hair, and allergens far better than standard filters.
MERV 13 is the best. It’s designed to trap fine particles like pet dander and airborne proteins that trigger allergies.
Yes. Especially those rated MERV 11 or higher—they remove microscopic allergens from the air, reducing sneezing, coughing, and irritation.
Every 60–90 days is recommended. But monthly changes may be needed in homes with multiple pets or heavy shedding.
A 4-inch deep MERV 13 filter is highly effective. It traps fine pet allergens, lasts longer, and improves overall indoor air quality.
Turn off your HVAC system's power.
Have your best 10x20x4 air filter ready.
Carefully remove the old air filter.
Note the direction of the airflow arrows on the old filter.
Insert the new air filter into the slot.
If there is a cover over the filter, replace it securely.
Turn the power back on.
