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Primary address: 200 Fifth St. Michigan Center, MI, 49254 517-764-1500 800-764-1565 - toll free 517-764-3474 - fax Adrian office: 7250 W. U.S. 223 Adrian MI, 49221 517-263-3040 800-913-9333 - toll free Member of International Ground Source Heat Pump Association and Michigan Geothermal Energy Association |
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