This cabin retreat in the woods of Ontario, Canada has windows that were recycled from a Toronto skyscraper. It is outfitted with self-powered Ecofans, a 65-gallon pressurized tank with a pump that doesn’t require constant power to operate, on-demand propane water heater and refrigerator, and a 19,000 BTU commercial-grade Wolf stove has been converted from natural gas to propane. Photo 2 of 9 in 9 Eco-Friendly Homes With Smart, Sustainable Features

9 Eco-Friendly Homes With Smart, Sustainable Features

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This cabin retreat in the woods of Ontario, Canada, has windows that were recycled from a Toronto skyscraper. It's outfitted with self-powered Ecofans, a 65-gallon pressurized tank with a pump that doesn’t require constant power to operate, an on-demand propane water heater and refrigerator, and a 19,000 BTU commercial-grade Wolf stove that's been converted from natural gas to propane.