In the current pantheon of white accessories, the pointy pump may be the one with most legs.

WSJ: White Accessories: Do the White Thing

At current electricity prices, an investment in a geothermal heat pump system can be paid off in less than eight years, says Trane, which like other energy service providers has seen a big uptick in interest for geothermal systems in recent years, from the military, schools, corporations and even residential customers.

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