About us. Overholt Heating & Air is a small, family owned and operated HVAC business in Collinsville, OK. ```Job Summary```. We are seeking a reliable and detail-oriented Service Dispatcher to join our team. As a Service Dispatcher, you will play a crucial role in coordinating and dispatching service requests to our team of technicians. Your excellent organizational skills and ability to multitask will ensure that our customers receive prompt and...