ProServe LLC - Heating and Air Share: Heating & Air ServicesHome Improvement & Maintenance ProServe LLC - Heating and Air Thornfield, MO 65762 (417) 989-9167 Hours: By appointment About About Serving All Your Heating and Cooling Needs - Commercial & Residential. Propane and natural gas installation and Repair. Licensed and Insured. Over 35 years experience. Call The Office (417) 683-4594 Office Location 810 Collins Avenue Ava, MO 65608 Email Us director@avachamber.org