Filter King 22x37x1 Air Filter 4-Pack - MERV 13 Performance

In this review of the Filter King 22x37x1 Air Filter 4-pack the bottom line is simple: this is a value-oriented MERV 13 pleated filter set intended for homeowners who want stronger particle capture without compromising airflow. The reviewer found the set most useful for routine HVAC maintenance because the pleated design and MERV 13 rating capture more airborne particles and can improve perceived air quality within about 48 hours. Installation is straightforward and the filters are made in the USA, which will matter to buyers focused on domestic manufacturing.

Key Features

• MERV 13 rating: Provides high-efficiency capture of fine particles for improved indoor air cleanliness compared with lower-MERV 1 in filters.
• 4-pack convenience: Supplies multiple replacement filters so homeowners can change filters over several months without repeated orders.
• Pleated design: The pleats expand surface area to trap more particulates while helping maintain airflow and extending filter life.
• Made in USA: Fully manufactured domestically with an EPA establishment number noted, which supports quality control and traceability.
• Up to 90 day life: Rated to last up to 90 days depending on conditions, offering a low-maintenance replacement cadence for many homes.

Who It's For

This 22x37x1 Filter King 4-pack is aimed at homeowners and renters with compatible HVAC housings who want a higher-efficiency 1 in filter that balances filtration and airflow. It suits people with allergies or those wanting to reduce household dust and airborne particles without moving to thicker, specialty filters.

It is less suitable for systems that require exact factory-sized filters if a perfect fit is critical, or for buyers who need thicker filters for very heavy contamination or commercial HVAC systems. Measure your filter slot; the actual dimensions are slightly under nominal size.

Pros & Cons

Pros

• Good particle capture for a 1 in filter thanks to the MERV 13 pleated media.
• Made in USA production provides manufacturing transparency and consistent materials.
• Four filters per pack deliver straightforward value and reduce reorder frequency.
• Easy to install with a simple open, slide and close replacement workflow.

Cons

• Actual size is 21.5 in x 36.5 in x 0.75 in, which some users report as smaller than the nominal 22x37x1 and can affect fit in some frames.
• Build quality reports are mixed, with some users finding materials less sturdy than expected for a MERV 13 product.

Specifications

Brand	Filter King
Nominal size	22 in x 37 in x 1 in
Actual size	21.5 in x 36.5 in x 0.75 in
Pack quantity	4 pack
MERV rating	MERV 13
Manufacturing	Made in USA (EPA Establishment No. 103501-FL-1)
Recommended replacement	Every 30 - 90 days

Our Verdict

The Filter King 22x37x1 4-pack is a practical choice for household HVAC maintenance when you want stronger filtration than basic fiberglass pads. Its MERV 13 media and pleated construction deliver measurable reduction in airborne particles and the four-pack format offers solid value. Be mindful of the actual dimensions when fitting into frames; if precise factory sizing is essential, verify fit before relying on this pack.

Frequently Asked Questions

Are these filters truly MERV 13?
Yes, the product is specified as MERV 13 rated pleated filters for higher-efficiency particle capture.

How often should I change them?
Manufacturer guidance is every 30 to 90 days for 1 in filters; many users change every 60 to 90 days depending on dust and household conditions.

Will they fit my 22 x 37 slot?
The nominal size is 22 in x 37 in x 1 in, but actual size is 21.5 in x 36.5 in x 0.75 in, so confirm slot tolerances before purchase.