Geothermal heating and cooling systems have been successfully implemented for at least 70 years in the United States, but for many homeowners, they are still a “new” option. And when an energy efficient technology is new or more expensive, regardless of the benefits, it becomes a novelty of sorts for those with an adventurous spirit and plenty of money, leaving the rest of us paying our higher energy bills. (See related post: “10 Myths About Geothermal Heating and Cooling.”)
The US now has a corp of skilled geo-exchange engineers and tradesmen, thanks in part to the stimulus act of 2009, and homeowners now have more access to information about designing an energy-efficient home. Still, even with an impressive 30 percent tax credit implemented at the federal level, U.S. homeowners need to pay the up-front cost and find a trustworthy contractor to install a geothermal HVAC system.
For the entire story on Geothermal for Homes on the NatGeo blog