Disclaimer & disclosures
Affiliate disclosure (FTC material-connection statement)
As an Amazon Associate, this site earns from qualifying purchases. Pages may also contain affiliate links to other retailers and to filter-subscription services. If you click an affiliate link and buy or sign up, we may earn a commission at no extra cost to you. That commercial relationship is a "material connection" under the US Federal Trade Commission's endorsement guides (16 CFR Part 255); this page, plus labels in any section containing the links, is our disclosure of it. Our commitments: links appear only where genuinely relevant to the page's topic, and no affiliate relationship alters a recommendation — the performance data we cite comes from published tests, not partners.
Advertising disclosure
The site displays advertising served by Google AdSense. Placements are selected by Google's systems, not us; an ad appearing here is not our endorsement. We don't write content to please advertisers or publish sponsored content disguised as editorial. Cookie details and opt-outs are in the privacy policy.
DIY safety disclaimer
Build guides describe community-developed designs (notably the Corsi-Rosenthal box) that have been independently safety-tested in the configurations described. Your build is your responsibility: use UL- or ETL-listed electrical equipment in good condition, follow its manufacturer's instructions, and supervise appropriately around children and pets. If anything about your equipment seems wrong — heat, smells, damaged cords — stop using it. We accept no responsibility for builds, modifications, or uses beyond what the guides describe.
Not medical advice
Filtration affects air; only a clinician can advise a person. Content here is general information, not a diagnosis, treatment, or substitute for medical guidance — particularly for readers with asthma, COPD, cardiac conditions, or other smoke-sensitive health situations.
Accuracy, errors and corrections
Performance figures cite their source tests and pages carry verification dates, but standards revise, products change, and mistakes are possible. Errors reported to corrections@airfilterkits.com are checked against sources and fixed with a visible note. See the terms of use for the full liability position.
Editorial independence
No filter brand, retailer, or manufacturer pays for placement, reviews, or rankings. Revenue (ads, affiliate commissions) funds hosting and research time; it buys no influence. Full sourcing rules: about & editorial policy.
No affiliation
AirFilterKits.com is independent — not affiliated with ASHRAE, the EPA, Amazon (beyond the Associates program), or any company named in our guides. Names appear to identify products and sources.
Questions
hello@airfilterkits.com, or the contact page.