Contact Us Hottinger Geothermal 8216 Panhandle Road Newark, OH 43056 740-323-2330 Thank you for your interest in Hottinger Geothermal and a geothermal comfort system. Please fill out the form below and someone will contact you shortly. We'll answer any questions you have and can provide you with a free estimate for your unique geothermal situation in Columbus and the surrounding region. Required Required Not a valid email Required Not a valid phone number Height in meters Keyboard Layout Preference Weight in Kilograms