Contact Us Schlatters Plumbing Heating & AC Defiance, OH 43512 419-393-4690 Thank you for your interest in Schlatters Plumbing Heating & AC 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 Defiance and the surrounding region. Required Required Not a valid email Required Not a valid phone number Favorite Comedian Fire or Ice Height in meters