Natural Ovens reports the building is very energy efficient. They have no A/C except for in a few offices, and no heating system installed. They are able to maintain temperature with one large exhaust fan at the top of the dome.

Natural Ovens reports the building is very energy efficient. They have no A/C except for in a few offices, and no heating system installed. They are able to maintain temperature with one large exhaust fan at the top of the dome. (vitophoto.com)

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