Located in Charleston, W.Va., Casto Technical Services is a parts store operated by Trane, which is a global provider of heating, ventilation and air conditioning solutions and building management systems and controls. Formerly known as American Standard Companies, Trane offers dehumidifying and air cleaning products, service and parts support and financing solutions. The company markets its products, services and systems under the Trane and American Standard brands. It serves the commercial, residential, institutional and industrial markets primarily through company-owned offices, independent agents and wholesale distributors. The company has more than 29,000 employees and over 30 production facilities worldwide. Trane is headquartered in Piscataway, N.J.