Hercules 35230 Haymaker DESCALER Product, Clear 32 oz HAYMAKER DESCALER PRODUCT Features Hercules Haymaker Tankless Water Heater Descaler quickly and easily dissolves inorganic deposits that restrict flow to restore circulation and heat transfer efficiency. Citric acid-based, non-corrosive and VOC-free. Removes carbonates, sulfates, phosphates, rust, oxides and other mineral deposits. Compatabile with most commonly found plumbing-related materials including PVC, CPVC, ABS, rubber, steel and most metals. Other applications include descaling non-aluminum heat exchangers and water heaters. Extends the life of the appliance when used as part of a regularly scheduled preventative maintenance program. Safe for septic systems and sewers. USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.