Contact Us Fairfield Heating & Cooling 512 S. Broad St. Lancaster, OH 43130 740-653-6421 Thank you for your interest in Fairfield Heating & Cooling 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 Central and the surrounding region. Required Required Not a valid email Required Not a valid phone number Secret Answer Mailing Address is my Home Address Favorite National Publication