Terms of use
Last updated November 8, 2026.
These terms apply to your use of IndoorAirLab.org (the "site"). By using the site, you agree to them. If you do not agree, please do not use the site.
Information only, not medical or professional advice
Everything on this site is general educational information. It is not medical, engineering, HVAC, legal, or other professional advice, and it does not create a doctor-patient or any other professional relationship. Talk to a qualified professional about your health, your home, and your equipment. Never ignore professional advice or delay getting it because of something you read here.
In an emergency, call 911. If a carbon monoxide alarm sounds or you have symptoms of CO poisoning, leave the building right away and call 911 from outside. Follow official guidance from public health and emergency agencies during wildfire smoke events.
Accuracy
We work to keep our information accurate, cite our sources, and correct mistakes. Product specifications, prices, certifications, and availability change, and some figures we report come from manufacturers or third parties that we have not independently verified. We label those where we can. The site is provided "as is" and "as available," and we make no warranties, express or implied, about its completeness, accuracy, or fitness for a particular purpose.
Products and third-party sites
We do not sell products. Purchases you make through links on this site are between you and the retailer or manufacturer, and their terms, warranties, and return policies apply. We are not responsible for the content, products, or practices of third-party sites. Always read and follow the manufacturer's instructions and safety warnings, including for any do-it-yourself filter or fan setup.
Affiliate links
Some links earn us a commission at no extra cost to you. See our affiliate disclosure.
Tools and calculators
Our purifier finder and calculator give estimates based on published guidance and the numbers you enter. Real-world results depend on your room, your equipment, and outdoor conditions.
Limitation of liability
To the fullest extent allowed by law, IndoorAirLab.org and its owner are not liable for any direct, indirect, incidental, or consequential damages arising from your use of the site or your reliance on its content, products you buy, or sites you visit from it. Some places do not allow certain limitations, so some of these may not apply to you.
Our content
The text, charts, graphics, and design on this site belong to IndoorAirLab.org unless noted otherwise. You are welcome to link to our pages and quote short passages with credit and a link. Please do not copy whole articles or graphics, or republish them, without written permission. Product names, logos, and trademarks belong to their owners and are used only to identify products.
Acceptable use
Please do not misuse the site, including by trying to disrupt it, gain unauthorized access, or scrape it in ways that overload it.
Changes
We may update these terms. The date at the top shows the latest version. Continuing to use the site after a change means you accept the updated terms.
Governing law
These terms are governed by the laws of the State of Colorado, USA, without regard to its conflict-of-law rules.