Complete flushing kit includes a 1/6 HP submersible pump, two 6-foot color-coded rubber hoses, 3.5-gallon measuring bucket, replacement filter, and maintenance log. Replacement filter compatible with Rinnai tankless water heater systems, ideal for preventative maintenance and improved performance. Just add vinegar or your preferred descaler for an effective, budget-friendly solution to remove limescale and buildup. 1/6 HP submersible pump with thermal overload protection, strong bottom filter, and included NPT adapter for reliable water circulation. Hot and cold color-coded rubber hoses are tear-resistant, leak-proof, and burst-proof, ensuring secure and efficient water flow. 3.5-gallon clear measuring bucket simplifies solution preparation with markings in gallons, quarts, and liters for precision. Maintenance log sheet included to help track flushing dates and ensure consistent annual or biannual maintenance. Works with most all tankless water heaters such as Rinnai, Bosch, Noritz, Rheem, Takagi, Tempra, Navien, Ecosmart, Stiebel, Eccotemp, Atmor, Trutankless, Marey Power, and others. The DrainX Tankless Water Heater Flushing Kit provides everything you need for easy, DIY maintenance to keep your water heater running efficiently. This all-in-one kit includes a powerful 1/6 HP submersible pump with a strong bottom filter, two 6-foot color-coded rubber hoses for hot and cold water, and a 3.5-gallon clear measuring bucket for precise solution mixing. Also included is a replacement filter compatible with many water heater systems to ensure reliable performance. Just add vinegar or your preferred descaler to prevent limescale buildup, improve efficiency, and extend the life of your tankless water heater. A maintenance log is included to help you track service history for worry-free upkeep