For more than three decades, Tri-State Water, Power & Air has helped families improve their quality of life with cutting edge products and excellent customer service. From our facilities in Cape Girardeau MO, St. Louis MO, Springfield MO, Chicago IL, Indianapolis IN, Nashville TN, Little Rock AR, Dallas TX, Longview TX, and multiple locations across South Florida, Tri-State offers water purification systems, air purification systems, whole house generators, tankless and solar water heaters, storm shelters, safe rooms, and solar power systems.