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 — upgrade your air game now!

TRUSTED COMPATIBILITY - Seamlessly replaces Honeywell FC100A1011, Lennox X0585 & a wide range of popular models for hassle-free upgrades.
BUILT TO LAST 3 X LONGER - Electrostatically charged pleats (8 per foot) outperform fiberglass filters, saving you time & money.
MADE IN THE USA QUALITY - Crafted with premium materials and backed by manufacturer warranty for peace of mind and superior performance.
ALLERGEN DEFENSE MASTERY - MERV 11 synthetic media traps 95% of dust, pet dander & allergens without choking airflow.
EFFORTLESS FIT INSTALL - Precision sizing and dual wire-backed recyclable frames ensure a snug, durable fit in your HVAC system.

Filterbuy’s 20x20x5 MERV 11 air filters deliver advanced allergen defense by capturing 95% of airborne particles with electrostatically charged pleated media. Designed for easy installation and durability, these USA-made filters fit major HVAC brands like Honeywell and Lennox, lasting 3x longer than standard fiberglass options. Perfect for professionals who demand clean air and hassle-free maintenance.

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.

RM924

Duties & taxes incl.

Malaysiastore

Free Returns

30 daysfor PRO membership users

15 dayswithout membership

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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Brand Name	Filterbuy
Model Info	HRF20x20x5M11pk2
Item Weight	7.5 pounds
Product Dimensions	19.63 x 19.81 x 4.38 inches
Item model number	HRF20x20x5M11pk2
Is Discontinued By Manufacturer	No
Part Number	HRF20x20x5M11pk2
Special Features	Dust Collection, Easy to Install, Removable
Color	Gold
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 20x20x5 Air Filter MERV 11 Allergen Defense (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement for Honeywell FC100A1011, Lennox X0585 & More (Actual Size: 19.63 x 19.88 x 4.38 Inches)

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