Contact Us Denver Geothermal Heating Denver, Colorado 80002 Thank you for your interest in Denver Geothermal Heating 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 Denver and the surrounding region. Required Required Not a valid email Required Not a valid phone number Favorite Comedian Fire or Ice Height in meters