Terms & Conditions

Last updated: August 16, 2026

These terms cover your use of this website and the filter information published on it. Read them before relying on any specification here to order a replacement.

Acceptance of Terms

By reaching this site and reading what is on it, you accept these terms. If any part of them does not work for you, stop here and use the manufacturer or retailer channels instead.

We may revise these terms as the site changes. The date at the top of this page tells you when the current version took effect.

Use of the Website

This site publishes filter specifications, MERV explanations, and buying guidance for personal, non-commercial reading. Copying whole sections for republication, scraping the pages in bulk, or using them to train a commercial model is not permitted.

Do not attempt to interfere with the site, its hosting, or any security measure protecting it.

Product Information

Specifications, MERV ratings, capture percentages, dimensions, and review counts shown here come from manufacturer bullet points, published spec sheets, and retailer listings. Those sources change without notice, and errors are possible.

This site does not sell filters, does not hold stock, and does not display prices or availability. Confirm the current dimension, rating, pack count, and price on the retailer page before you buy. Where a printed actual size and a nominal size disagree, measure your own slot and trust the tape.

Capture figures describe laboratory test conditions under ASHRAE Standard 52.2. Performance in a specific house depends on duct sizing, blower capacity, seal quality at the frame, and how long the filter stays in the slot.

Intellectual Property

The text, layout, and original photography on this site belong to their respective owners. Brand names, product names, and trademarks referenced here remain the property of their holders, and their use is descriptive rather than an assertion of ownership or endorsement.

Limitation of Liability

This is an informational site, not a seller, an installer, or an HVAC contractor. Nothing here is professional advice about your specific heating and cooling system.

Fitting a finer filter than a duct run tolerates can restrict airflow and cause a furnace to cycle on its high-limit switch. Decisions about rating, sizing, and replacement interval are yours, and where a system is old or the duct run is undersized, a licensed HVAC technician should make the call.

To the fullest extent the law allows, the operators of this site are not liable for equipment damage, service costs, or indirect losses arising from use of the information published here.

Third-Party Links

Pages here link out to retailer product pages. Those destinations run under their own terms, their own privacy practices, and their own return policies, none of which we control. Purchases made after following a link are transactions between you and that retailer.

This site takes part in affiliate programs, which is disclosed in the footer of every page. A qualifying purchase made through an outbound link may earn a commission at no additional cost to you. That arrangement does not change the specifications published here.

Changes to These Terms

Terms may be updated as the site or its affiliate arrangements change. Continued use after an update means you accept the revised version.

Governing Law

These terms are governed by the laws of the State of Ohio, United States, without regard to conflict-of-law provisions. Disputes fall to the courts of Ohio.

Contact

Questions about these terms go to [email protected] or 214 Auglaize Street, Wapakoneta, OH 45895, United States.