Geothermal in Action: Residential

Garnavillo, Iowa

Type of home: Single family, one story Unique features: Finished walk-out basement with supplemental electric heat Living space: 3,600 square feet Winter design heat loss: 45,599 Btu/hour Summer design heat gain: 29,774 Btu/hour Installation: Three-ton Water Furnace Horizontal loop: 2,500 feet of polyethylene pipe Heating season: $370.83 (7,385 kWh) Cooling season: $97.93 (1,262 kWh) Owner comment: "We are very pleased with the efficiency, cleanliness and steadiness of temperature."

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Learn more about:

What It Is: Economic Advantages

Resources: Incentives & Financing

Resources: Dealer Locator

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Brochures and fact sheets:

GeoThermal: Bringing Comfort to Your World
By Alliant Energy
[PDF format – 7 pages, 174kb]

More brochures and fact sheets….