Filter King 17.25x35.25x1 Air Filter 4-Pack - MERV 13 Performance

In this review the Filter King 17.25x35.25x1 air filter 4-pack is evaluated for homeowners and renters who need a reliable HVAC filter that balances particle capture with airflow. The single biggest reason to consider these filters is their MERV 13 rating combined with a pleated design that aims to remove a wide range of airborne particles without restricting system performance. Reviewed here are build quality, fit, longevity claims and real-world usability for typical A/C and furnace applications.

Key Features

• MERV 13 rating: Provides higher filtration efficiency to capture small particles such as pollen, dust and some airborne contaminants for cleaner indoor air.
• Pleated design: Increases filter surface area so it traps more particles and extends the useful life between changes.
• Made in USA: Fully manufactured in the United States under EPA establishment number 103501-FL-1 for local quality control and materials sourcing.
• 4-pack convenience: Supplied as four filters, which simplifies scheduled replacements and ensures spare filters are on hand for up to a year of typical use.
• Easy installation: Simple slide-in replacement fits standard 1 in filter slots and installs quickly without tools.
• Replacement interval guidance: Rated to last up to 90 days depending on conditions, with a recommended 30-90 day change window for 1 in filters.

Who It's For

This filter set is best for homeowners, renters and small households with central A/C or furnace systems who want improved indoor air quality and reduced airborne particles. It is a practical choice for people sensitive to allergens who still need a filter that preserves system airflow.

Those who require a heavier duty or thicker filter for industrial settings, or who need absolute assurance of rigid frame sturdiness under heavy airflow, may want to compare thicker or metal-framed options. People with nonstandard or slightly off-size filter slots should verify actual measurements before buying.

Pros & Cons

Pros

• High MERV 13 rating offers strong particle capture for better air clarity within days.
• Pleated construction increases surface area and extends the useful life between changes.
• Made in USA manufacturing offers reliable material and build provenance.
• Four-pack supply is convenient and cost-effective for scheduled maintenance.

Cons

• Some customers report mixed experiences with exact sizing, so measure the slot carefully before ordering.
• There are occasional comments about sturdiness under heavy conditions, so extremely high-flow or dusty industrial environments might require a sturdier frame.

Specifications

Our Verdict

The Filter King 17.25x35.25x1 4-pack is a solid choice for residential HVAC users who want a MERV 13 upgrade without sacrificing airflow. It delivers measurable air clarity, simple installation and the convenience of four replacements, making it a good value for typical home use; verify slot dimensions and consider heavier framed options only if your system faces extreme dust or airflow demands.

Frequently Asked Questions

Are these filters true to size?
They are labeled with both nominal and actual sizes; the actual size listed is 17.25 in x 35.25 in x 0.75 in, so measure your filter slot before purchase.

How often should they be changed?
The manufacturer recommends changing 1 in filters every 30 to 90 days depending on use and air quality, with potential for up to 90 days in light conditions.

Will a MERV 13 filter affect my HVAC airflow?
MERV 13 pleated filters are designed to capture more particles without significantly impacting airflow in typical residential systems, but check compatibility with your system if airflow is a concern.