Photo Credits

Photos

The photos below are used under Creative Commons Attribution (CC BY) or Attribution-ShareAlike (CC BY-SA) licenses. Each line gives the subject, the photographer as named on the file page, the license with the web address of its license deed at creativecommons.org, and the Wikimedia Commons file page. All photos were cropped, resized and converted to WebP for this site; on two equipment photos, small printed maker names were also blurred.

• Expansion tank, circulator pumps and radiant manifold in a basement: photo by Audetat, CC BY-SA 3.0 (license deed); Commons file page
• Carbon monoxide alarm on wooden boards: photo by Santeri Viinamäki, CC BY-SA 4.0 (license deed); Commons file page
• Carbondale with Mount Sopris behind: photo by Pierre Hollard, CC BY-SA 3.0 (license deed); Commons file page
• Condensing furnace exhaust with ice above snow: photo by Wtshymanski, CC BY-SA 4.0 (license deed); Commons file page
• Downtown Basalt in winter, from the air: photo by Barry Stevenson, CC BY-SA 4.0 (license deed); Commons file page
• Ductless mini-split indoor unit high on a wall: photo by ArnoldReinhold, CC BY-SA 4.0 (license deed); Commons file page
• Fryingpan and Roaring Fork confluence, Basalt: photo by Jeffrey Beall, CC BY 4.0 (license deed); Commons file page
• Glenwood Springs and the Colorado River from above: photo by Nils Huenerfuerst, CC BY 4.0 (license deed); Commons file page
• Heat pump outdoor unit caked in snow: photo by PeterEastern, CC BY-SA 4.0 (license deed); Commons file page
• Heated brick sidewalk clear of snow: photo by Daniel Morrison, CC BY 2.0 (license deed); Commons file page
• Ice on a heat pump coil guard: photo by Shixart1985, CC BY 2.0 (license deed); Commons file page
• Icicles along a roof edge: photo by Santeri Viinamäki, CC BY-SA 4.0 (license deed); Commons file page
• Maroon Bells above Maroon Lake in summer: photo by Rhododendrites, CC BY-SA 4.0 (license deed); Commons file page
• Portable humidifier, close view: photo by Shixart1985, CC BY 2.0 (license deed); Commons file page
• Radiant tubing on mesh before a concrete pour: photo by Maisire, CC BY-SA 4.0 (license deed); Commons file page
• Roaring Fork River in Aspen: photo by Rhododendrites, CC BY-SA 4.0 (license deed); Commons file page
• Snow-covered house and street lamp at night: photo by robmcm, CC BY-SA 2.0 (license deed); Commons file page
• Snow-laden branches in Aspen after a blizzard: photo by CameraHound, CC BY-SA 3.0 (license deed); Commons file page
• Snowmass Village ski base and chairlift: photo by Werdna, CC BY-SA 4.0 (license deed); Commons file page
• Tower air purifier by a window: photo by ajay_suresh, CC BY 2.0 (license deed); Commons file page
• Wall-hung condensing boiler with copper piping: photo by Boulderhydronics, CC BY-SA 3.0 (license deed); Commons file page

These photos are in the public domain or released under the CC0 public domain dedication, so no attribution is required; they are credited here anyway.

• Air filter held beside a furnace: Wikideas1, CC0 public domain dedication (license deed); Commons file page
• Digital thermostat on a wall: Ente75, CC0 public domain dedication (license deed); Commons file page
• Grizzly Creek Fire in Glenwood Canyon at night, August 2020: White River National Forest U.S. Forest Service, public domain, as marked on its Commons file page; Commons file page
• Peaks from the Independence Pass overlook: DimiTalen, CC0 public domain dedication (license deed); Commons file page
• Snow-damaged power poles on a prairie: USFWS Mountain Prairie, public domain, as marked on its Commons file page; Commons file page

Illustrations and charts

Illustrations and charts are generated for this site. Every illustration is captioned "Illustration" where it appears. The charts (infographics) show figures taken from the public sources named on each page, and each chart carries its own source line. If a credit above is wrong or incomplete, the file page on Wikimedia Commons is the record this page follows.