"I concluded that the EarthLinked® heat pump system was the most efficient and most likely to work in my installation. My research showed that EarthLinked® is 20 to 25 percent more efficient than other geothermal options and is virtually maintenance-free.? "I’m amazed at how low our electric bills have been in New York City, where we pay $0.14/kwh. My neighbours are paying a lot more to heat and cool their homes." — Mike Yoder, Manhattan, NY