Founded in 1971 by Syd Spengler, The Spengler Company has been a highly rated service company for 50 years, specializing in plumbing, heating, and air conditioning services. Headquartered in O'Fallon, Illinois, The Spengler Company services the entire metro-east including local communities like Belleville, Fairview Heights, Shiloh, Swansea and outer areas like Edwardsville, Collinsville, Glen Carbon, Waterloo, Columbia, and more. Licensed plumbers and certified HVAC technicians on-call 24/7 within these areas.