• Hydrogen Peroxide Hydrogen peroxide can be used as an alternative sanitizer instead of chlorine, bromine, and other sanitation systems.
  • Hydrochloric Acid Hydrochloric acid is commonly called muriatic acid, and is used to lower the pH level in swimming pools.
  • Heat Exchanger A heat exchanger is a metal component inside swimming pool heaters, where pool water flows through a series of metal tubes heated by the pool heating elements.
  • Hardness Reagent A hardness reagent is often found in swimming pool test kits and mixed into the pads found on test strips, and is used in testing the hardness of swimming pool water.
  • Hard Water Hard water describes the extent to which various minerals are dissolved in water.