Talk:Double envelope house

External links modified
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 * Added archive https://web.archive.org/web/20070807075315/http://users.chartertn.net/dhrivnak/first_home.htm to http://users.chartertn.net/dhrivnak/first_home.htm

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Cheers.— InternetArchiveBot  (Report bug) 07:50, 13 September 2017 (UTC)

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Re: "Warm air rises by natural convection. It does not go down and around. They are fire traps and are against building codes in places like Aurora CO."

Warm air is more dense than hot air. It does go down and around if it's cooler than the air on the other side of a closed loop.

Also, regarding word choice of "fire trap"...seems a little "heated," right?