The hexagonal home built of honey-colored swamp wood and sandstone includes features he invented - radiant floor heating and the carport - plus Wright-made furniture.

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But intrepid travelers will be rewarded with stunning snowy landscapes as well as a "Tree Sauna" and under-floor heating in every room delivered by renewable energy.

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His company's website lists among their achievements not just corded and cordless kettles, but under-floor heating with a cordless connector and a new coating to make kettles boil less noisily.

BBC: Inventing the basics

The money raised would go towards installing double glazing, a new floor, toilets and heating, said Mr Steel.

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The laundry list of green features of each Oil Silo Home is exhaustive: super-thick insulated wall panels, rainwater recycling systems, rooftop gardens, natural ventilation, EV charging stations, radiant floor heating, green walls, and the list goes on and on.

FORBES: Written by Matt Hickman

Completed in 2011, the other end of the structure is a four-story, 4, 000-square-foot house with under-floor heating, solar panels, low-energy appliances and the latest in triple-glazed windows.

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