Our friendly and knowledgeable technicians always put your needs first. Are you in need of some serious temperature adjustments? In Des Plaines IL , Arlington Heights, IL and surrounding areas, the summers are sweltering and the winters are brutal. Don’t spend another uncomfortable minute sweating or freezing. When you need dependable HVAC services in Des Plaines, IL, choose Alltech HVAC, Inc. Don’t settle for generic HVAC services from a big conglomerate. We’re a family-owned and -operated HVAC company with over 25 years of heating and cooling experience. We love our community, and we work hard to provide affordable prices. You can turn to us for residential or commercial HVAC service, no matter the size of the project.