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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We remain fully operational. Our teams are working around the clock to ensure your deliveries continue safely.

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan

Customer Services

About Us

Customer Support

Our Other Brands:Hewyn|Selfship

Filterbuy 13x21.5x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 12.88 x 21.50 x 0.75 Inches)

Filterbuy 13x21.5x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 12.88 x 21.50 x 0.75 Inches)

Product ID: 251085001

Details

Air Filter Construction
Pleated
Brand
FilterBuy
Compatible devices
Air Cleaner
Item weight
531 g
MERV rating
8
Material
Plastic

📏Precise 12.88x21.5x0.75 in fit

♻️Eco-friendly recyclable materials

🛡️MERV 8 blocks 90% dust & allergens

Description

🛡️ Breathe smarter, live cleaner — don’t let dust crash your vibe!

BUILT TO ENDURE - Dual wire-backed beverage board frame resists heat & moisture for lasting durability.
TRIPLE LIFESPAN TECH - 14 pleats per foot + electrostatic charge last 3x longer than fiberglass filters.
ADVANCED DUST DEFENSE - MERV 8 synthetic media traps 90% of dust, pollen, and mold without airflow loss.
TAILORED FIT ZERO HASSLE - Exact dimensions ensure seamless HVAC compatibility for peak performance.
MADE IN THE USA MADE FOR YOU - 100% American-made with recyclable materials for eco-conscious air quality upgrades.

Filterbuy’s 13x21.5x1 MERV 8 pleated air filters deliver superior dust and allergen capture with 90% efficiency, thanks to electrostatically charged synthetic media and 14 pleats per foot. Designed for easy installation and durability, their dual wire-backed beverage board frames withstand heat and moisture, extending filter life threefold compared to fiberglass. Proudly made in the USA with recyclable materials, these filters fit furnaces, ACs, heat pumps, and HVAC systems precisely, ensuring cleaner air and a healthier home environment.

Specifications

ASIN	B00CJZ7R14
Batteries Required?	No
Batteries included?	No
Best Sellers Rank	785,817 in DIY & Tools ( See Top 100 in DIY & Tools ) 91 in Boiler Filters
Colour	Silver
Customer Reviews	4.7 4.7 out of 5 stars (62,768)
Date First Available	27 April 2013
Finish	Pleated
Included Components	Air Filters
Item Package Quantity	1
Item Weight	531 g
Item model number	AFB13x21.5x1M8Apk4
Manufacturer	FilterBuy
Material	Plastic Aluminum Polypropylene
Minimum Efficiency Reporting Values (MERV)	8
Part Number	FBA_AFB13x21.5x1M8Apk4
Pattern	Electrostatic
Plug profile	Embedded
Product Dimensions	54.61 x 32.72 x 1.91 cm; 530.7 g
Size	4 Count (Pack of 1)
Special Features	Dust Collection, Easy to Install, Removable
Style	13x21.5x1
Usage	Commercial/Residential

Reviews

G**G

Item was on-time and as advertised. Excellent service and quality.

9.08.2025

M**Y

Why run around looking for this size filter when I can use Amazon to order on my phone and have it delivered to my door in two days? Never out of stock with a variety of sizes and brand names. I don’t have to select what’s available, it’s always there and priced to buy either individually or bulk.

31.01.2026

G**C

Works as expected and was a good price

14.09.2023

T**K

Excellent purchase.

19.11.2025

J**D

Extensive searching found these filters for our trailer which were not available in any RV store we went to in southern Ontario! Fits & works!

22.09.2022

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