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.

When 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.

Will these air filters fit my system?

Most of our filters are universally compatible and will work with any furnace, air conditioner, heat pump, or HVAC system as long as you choose the proper size. But if you see a specific brand name on a listing, make sure it matches your unit model.

How many air filters do I need?

This varies for every customer depending on specific needs such as the number of vents in your home. 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.

How do I change my air filter?

After finding the right size, turn off the power supply and remove the cover from your intake vent before taking out the old filter. Then just insert your new filter to match the direction of air flow, replace the cover, and turn the power back on.

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Filterbuy 20x30x1 Air Filter MERV 11 Superior Pet & Allergy Defense (4-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 19.63 x 29.63 x 0.75)

Filterbuy 20x30x1 Air Filter MERV 11 Superior Pet & Allergy Defense (4-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 19.63 x 29.63 x 0.75)

Product ID: 295339202

Details

Brand
FilterBuy
Compatible devices
Air Cleaner
Global Trade Identification Number
Item weight
0.01 Ounces
MERV rating
11
Manufacturer
Filterbuy

♻️Long-lasting 3-Month Durability

🛡️MERV 11 Superior Filtration

🇺🇸100% Made in USA Quality

Filterbuy 20x30x1 Air Filter MERV 11 Superior Pet & Allergy Defense (4-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 19.63 x 29.63 x 0.75)

Product ID: 295339202

Details

Brand
FilterBuy
Compatible devices
Air Cleaner
Global Trade Identification Number
Item weight
0.01 Ounces
MERV rating
11
Manufacturer
Filterbuy

♻️Long-lasting 3-Month Durability

🛡️MERV 11 Superior Filtration

🇺🇸100% Made in USA Quality

Description

🛡️ Breathe Better, Live Better — Don’t Let Allergens Crash Your Space!

BUILT TO WITHSTAND - Robust beverage board frame resists humidity & temps up to 200°F.
DURABLE SYNTHETIC MEDIA - Outperforms standard cotton filters with enhanced particulate efficiency.
PROUDLY MADE IN THE USA - Crafted with 100% American components for trusted quality and reliability.
ADVANCED MERV 11 PROTECTION - Captures pet dander, pollen, smoke & more for cleaner, healthier air.
OPTIMIZED FOR PET ALLERGY DEFENSE - Perfect for pet owners and allergy sufferers craving fresher indoor air.

Filterbuy’s 20x30x1 MERV 11 pleated air filters deliver superior allergen and pet dander defense with electrostatic synthetic media. Designed for residential and commercial HVAC systems, these durable, American-made filters last up to 3 months while capturing fine particles like pollen, dust mites, and smoke. Engineered with a humidity-resistant beverage board frame, they maintain airflow and system efficiency, making them a must-have upgrade for healthier indoor environments.

Specifications

ASIN	B00CJZ5UC2
Brand Name	FilterBuy
Compatible Devices	Air Cleaner, Air Conditioner, Furnace, HVAC System, Heat Pump
Customer Reviews	4.6 4.6 out of 5 stars (805)
Global Trade Identification Number	00717267053792
Included Components	Air Filters
Item Weight	0.01 Ounces
MERV Rating	11
Manufacturer	Filterbuy
Manufacturer Part Number	AFB20x30x1M11pk4
Material Type	Synthetic
Max Temperature	200 Degrees Fahrenheit
Max Velocity	615 Cubic Feet Per Minute
Model Number	AFB20x30x1M11pk4
Number of Items	4
Number of Packs	4
UPC	717267053792
Unit Count	4.0 count

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