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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🛡️ Breathe smarter, live better—filter like a pro!

ELITE MERV 13 DEFENSE - Blocks 98% of dust & bacteria for pristine air quality
ROBUST DUAL WIRE FRAME - Engineered for easy install and extreme temperature resistance—no warping, no hassle
PRECISION PLEATED DESIGN - 16 pleats per foot maximize particle capture without airflow loss
TRIPLE DURATION DURABILITY - Lasts 3x longer than standard fiberglass filters—replace quarterly, not monthly
ECO CONSCIOUS CRAFTSMANSHIP - Made with recyclable materials and proudly manufactured in the USA

Filterbuy’s 20x20x1 MERV 13 air filters deliver hospital-grade filtration by capturing 98% of airborne dust and bacteria. Featuring an electrostatically charged synthetic media with 16 pleats per foot, these filters last three times longer than fiberglass alternatives. Designed with a durable dual-wire frame and made entirely in the USA from recyclable materials, they ensure easy installation and reliable performance for HVAC, furnace, and AC systems.

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

3396740₫

Duties & taxes incl.

Vietnamstore

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30 daysfor PRO membership users

15 dayswithout membership

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

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Brand Name	Filterbuy
Model Info	AFB20x20x1M13pk4
Item Weight	0.01 ounces
Product Dimensions	19.5 x 19.5 x 0.75 inches
Item model number	AFB20x20x1M13pk4
Is Discontinued By Manufacturer	No
Part Number	AFB20x20x1M13pk4
Special Features	Dust Collection, Easy to Install, Removable
Color	Blue
Compatible Device	Air Cleaner, Air Conditioner, Furnace, HVAC System, Heat Pump
Material Type	Aluminum, Plastic, Polypropylene
Included Components	Air Filters
Batteries Included?	No
Batteries Required?	No
Manufacturer Warranty	Parts

Filterbuy 20x20x1 Air Filter MERV 13 Optimal 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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