What lies beneath? Efficient heating and cooling.

Can Earth’s geothermal heat warm - and cool - your home?The hottest day ever recorded on Earth was on July 10, 1913. Thermometers in California’s Death Valley measured 134oF. The coldest day ever recorded on land (not on an Antarctic ice sheet) was in the tiny Siberian settlement of Oymyakon, which got as cold as -90oF on February 6, 1933. But anyone standing in either of these locations, on these days of extreme hot and cold, were a mere 30 feet away from much more reasonable temperatures - ...