Question 1

How does geothermal heating and cooling work?

Accepted Answer

Geothermal systems use the constant temperature of the earth (about 55°F in New England) to heat and cool buildings. A ground loop circulates fluid through underground pipes, exchanging heat with the earth via a heat pump.

Question 2

How much does a geothermal system cost in Massachusetts?

Accepted Answer

Typical residential geothermal systems cost $8-12 per square foot including drilling, ground loop, and heat pump. After available incentives and tax credits, most homeowners see payback in 5-8 years.

Question 3

What is a standing column well?

Accepted Answer

A standing column well is an open-loop geothermal system where water is drawn from a deep well, passes through a heat pump, and returns to the same well. They are particularly effective in the bedrock geology found throughout New England.

Question 4

Does geothermal work in cold New England winters?

Accepted Answer

Yes. Geothermal is ideal for New England because it uses the constant underground temperature of approximately 55°F, which doesn't change regardless of outdoor conditions. Unlike air-source heat pumps, geothermal efficiency doesn't degrade in cold weather.

Question 5

What areas does GDNE serve?

Accepted Answer

GDNE serves all six New England states: Massachusetts, Connecticut, New Hampshire, Vermont, Rhode Island, and Maine. Our headquarters are in Tewksbury, MA.

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