Filter King 22x36x1 Air Filter 4-Pack - MERV 8 Home HVAC

In this review the Filter King 22x36x1 Air Filter 4-pack is evaluated for homeowners and renters who want an affordable, reliable replacement for 1 in HVAC systems. The single biggest reason to consider these filters is the combination of a MERV 8 rating and pleated construction that captures more dust and airborne particles while maintaining airflow, with the convenience of a four-pack that is fully manufactured in the United States. The reviewer focuses on fit, build, and real-world performance over a typical replacement cycle.

Key Features

• MERV 8 rating: Provides moderate particle filtration suitable for common household dust, pollen, and pet dander without heavy restriction to airflow.
• Pleated design: The pleats increase surface area so the filter captures more particles and extends usable life between changes.
• Actual size accuracy: Lists actual dimensions as 21.5 in x 35.5 in x 0.75 in, which helps ensure a proper fit for grills and housings that require precise sizing.
• Made in USA: Fully manufactured domestically with an EPA establishment number noted, which may matter to buyers seeking US-made building supplies.
• Long service interval: Rated to last up to 90 days under ideal conditions, giving flexibility to change between 30 and 90 days based on household needs.
• Easy installation: The open, slide and close design makes swaps quick and simple for DIY maintenance.

Who It's For

These filters are best for typical single-family homes, apartments, or light-commercial spaces that need a balance between filtration and airflow. Buyers who have allergies to common particles, pets, or dusty conditions will appreciate the MERV 8 performance and pleated media without the pressure drop of higher-MERV options.

People who need HEPA-level filtration, specialized industrial filtration, or thicker-than-1-in filters should look elsewhere. Also, if a vent or filter slot requires nonstandard exact dimensions, confirm the actual 21.5 in x 35.5 in x 0.75 in size before purchasing.

Pros & Cons

Pros

• Good balance of particle capture and airflow thanks to the pleated media and MERV 8 rating.
• Four-pack format delivers clear value for regular replacement over a year.
• Made in the USA construction and clear actual dimensions help with fit and quality expectations.
• Simple, quick installation makes routine maintenance painless for most homeowners.

Cons

• Some buyers report mixed fit experiences, so the listed actual size should be verified against the unit before ordering.
• Not intended for high-risk medical or industrial filtration where higher MERV or HEPA performance would be required.

Specifications

Brand	Filter King
Pack Quantity	4
Nominal Size	22 in x 36 in x 1 in
Actual Size	21.5 in x 35.5 in x 0.75 in
MERV Rating	8
Made	Made in USA (EPA Establishment No. 103501-FL-1)
Recommended Change Interval	30 - 90 days

Our Verdict

The Filter King 22x36x1 4-pack is a practical, good-value option for most homes that need dependable filtration without sacrificing airflow. With MERV 8 performance, pleated media, and US manufacturing, it suits routine HVAC maintenance and offers a sensible service life when changed every 30 to 90 days. Verify the actual dimensions before purchase to ensure a clean fit in your system.

Frequently Asked Questions

How often should these filters be changed?
Change every 30 to 90 days depending on household dust, pets, and usage; the filter can last up to 90 days under light conditions.

Will a MERV 8 filter affect airflow?
MERV 8 is designed to improve filtration of common particles while maintaining airflow suitable for most residential A/C and furnace systems.

Are these filters truly made in the USA?
Yes, the product is fully manufactured in the United States and lists an EPA establishment number for reference.