Image Credits
Air in the House uses ten real photographs under Creative Commons or public-domain terms, AI-made pictures where no fitting photo existed, and charts drawn from each page's cited numbers.
Updated
Photographs
These are real photographs from Wikimedia Commons, used under the license shown. Each was resized and converted for the web; where a brand logo or model marking was visible, it was blurred so no product is promoted.
- Image 3: looking up at a stainless island range hood with a curved glass canopy and baffle filters. By Stilfehler, CC BY-SA 4.0. Source page. Logo or marking blurred.
- Image 8: a bathroom ceiling with a white exhaust fan grille between recessed lights. By Tomwsulcer, released into the public domain by the author. Source page.
- Image 19: window glass fogged with condensation behind white muntins. By Shixart1985, CC BY 2.0. Source page.
- Image 23: a round white portable air cleaner on a wood floor beside an armchair. By Home Air Quality Guides, CC BY-SA 2.0. Source page. Logo or marking blurred.
- Image 25: an orange, smoke-filled daytime sky seen from a dim living room. By btwashburn, CC BY 2.0. Source page. Logo or marking blurred.
- Image 31: a home-made air cleaner, a box fan on a taped cube of pleated furnace filters. By Festucarubra, CC BY-SA 4.0. Source page.
- Image 32: a white tabletop humidifier with a blue water tank. By ajay_suresh, CC BY 2.0. Source page. Logo or marking blurred.
- Image 34: an aluminum mesh range hood filter clogged with grease. By Veikk0.ma, CC BY-SA 4.0. Source page.
Where a license is CC BY-SA, the edited versions shown here are shared under the same license.
AI-made pictures
Where no suitable photograph could be found, pages use photo-realistic pictures made with an image model. Each one carries the caption "AI-made picture, not a photo of a real house." They show typical equipment and rooms, such as a range hood, a furnace, a ventilator or a radon pipe, not anyone's actual home, and they are not product photos.
These images are AI-made: 1, 2, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 21, 22, 24, 26, 27, 28, 29 and 30. They include the lead pictures in the radon section, such as the test canister on radon testing and the slab pipe on radon mitigation.
An AI-made picture is there to help you recognize a kind of equipment or a situation. It is never evidence of how a particular product performs, and labels or gauges in it should not be read as real measurements.
Charts
The figure cards on article pages are drawn by the site itself from the numbers on that page. Each value on a card also appears in the page's text, next to the source that published it, such as EPA, the Department of Energy or the building code, and the card names that source underneath.
No chart uses data from a store or from an unnamed survey. When a source updates a figure, the page and its card are updated together. How pages choose and date their sources is described on who writes this site.