The Trane CHM0545 5 Gallon Rydlyme Descaler is a liquid cleaning solution designed to remove mineral scale, deposits, and buildup from compatible HVAC and water-based equipment. It works by dissolving accumulated scale inside heat exchangers, condensers, boilers, and related water circuits, helping restore proper heat transfer and fluid flow. Suitable for commercial and industrial HVA... https://www.partshnc.com/chm0545-trane-5-gallon-rydlyme-descaler