A workshop on residential geothermal energy systems – which capture the nearly constant 50- to 60-degree temperature trapped below the earth’s surface and use it to heat and cool the home – will be offered by two local experts on Saturday, April 6, between 10 AM and noon in the Andover Town Hall meeting room. The workshop is open to the public at no charge.

The workshop is the second in a series sponsored by the Andover Energy Group, a local organization of volunteers. The first, held in February and focusing on solar energy, drew over 80 attendees.

Leading the workshop will be Dan Grace of Dunbarton, whose Capital Well Clean Water Center is described as “one of New Hampshire’s most experienced geothermal well installers, with over 16 years of time-tested, successful geothermal well installations”; and

Bill Wenzel, head of a Merrimack heating and air-conditioning company that bears his name, and a certified installer for the International Ground Source Heat Pump Association, a non-profit organization established to advance geothermal heat pump technology.

Experienced in team presentations, Dan and Bill will offer an illustrated “Geothermal 101” session describing “the magic that is geothermal heating and cooling” and answering questions from attendees. Refreshments and handout materials will be offered.

To help the presenters with logistics, advance registration is encouraged, although non-registrants are welcome as well. To register, or for additional information, e-mail Maria Glorioso at Glorioso@nulltds.net, or call 735-6128.