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April 21, 2020This ad was originally published on this date and may contain an offer that is no longer valid. To learn more about this business and its most recent offers, click here.
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Environmentally friendly. Budget smart. A geothermal heat pump pulls energy from the earth, making it the most efficient and environmentally friendly way to stretch your heating and cooling dollars. OTTER TAIL POWER COMPANY otpco.com/Geothermal 800-493-3299 O in Environmentally friendly. Budget smart. A geothermal heat pump pulls energy from the earth, making it the most efficient and environmentally friendly way to stretch your heating and cooling dollars. OTTER TAIL POWER COMPANY otpco.com/Geothermal 800-493-3299 O in