(WESTERVILLE, OH — June 30, 2011)
Mechanical engineers, architects, developers, HVAC contractors, and others
involved in geothermal heat pump installations should evaluate the
qualifications of drilling contractors to protect groundwater and optimize heat
pump system operation.
The National Ground Water
Association has developed a list of pertinent questions professionals should
ask drilling contractors. The list can be accessed at NGWA’s Wellowner.org Web site.
Estimates by the HVAC industry
suggest that as much as 50 percent of the total geothermal heat pump market
involves the use of vertical borehole subsystems. There are several different
configurations of geothermal heat pump system installations involving vertical
Experienced geothermal heat pump
installers confirm that it is critical these systems (1) be installed with a
properly constructed borehole, (2) equipped with a properly placed loop tube
assembly, and (3) have properly grouted boreholes, not only for optimal heat
transfer but also for groundwater protection.
a nonprofit organization composed of U.S. and international groundwater
professionals — contractors, equipment manufacturers, suppliers, scientists,
and engineers — is dedicated to advancing groundwater knowledge. NGWA’s vision
is to be the leading groundwater association that advocates the responsible
development, management, and use of water.
800 551.7379 (614 898.7791 outside the United States)
8 a.m.-5 p.m. ET Monday through Friday
fax 614 898.7786
PO Box 715435
Columbus, OH 43271-5435
National Ground Water Association
601 Dempsey Rd.
Westerville, OH 43081
(614 898.7791 outside the US)
fax 614 898.7786