Thomas Heating & Air Share: Heating & Air ServicesHome Improvement & Maintenance Thomas Heating & Air Visit Website Ava, MO 65608 (417) 251-1721 Facebook Hours: Mon - Fri, 9:00 am - 5 pm; Call for appointment. About About HVAC Technician. Preventative maintenance, service and repairs. Call The Office (417) 683-4594 Office Location 810 Collins Avenue Ava, MO 65608 Email Us director@avachamber.org