Complete flushing kit includes a 1/6 HP submersible pump, two 6-foot color-coded hoses, 5-gallon measuring bucket, concentrated vinegar, replacement filter for Rinnai systems, and a maintenance log. Concentrated descaling vinegar dilutes to 4 gallons of househould vinegar, providing a strong, biodegradable solution to dissolve limescale, dirt, and buildup. Made in America. 1/6 HP submersible pump with strong bottom filter, thermal overload protection, and NPT adapter ensures reliable water circulation. 6-foot hot and cold color-coded rubber hoses are tear-resistant, leak-proof, and burst-proof for secure and efficient flushing. Large 5-gallon clear measuring bucket simplifies mixing with easy-to-read markings in gallons, quarts, and liters. Replacement filter compatible with Rinnai systems included for optional use, ideal for preventative maintenance and extending system performance. Maintenance log sheet helps track service dates for consistent annual or biannual flushing and upkeep. Compatible with most tankless water heater brands, including Rinnai, Bosch, Noritz, Rheem, Takagi, Tempra, Navien, Ecosmart, Stiebel Eltron, Eccotemp, Atmor, Trutankless, Marey Power, AO Smith, Bradford White, Westinghouse, Heatworks, Hoshizaki, and others The DrainX Tankless Water Heater Flushing Kit is a complete solution for maintaining and improving the performance of your tankless water heater. Featuring a powerful 1/6 HP submersible pump, two 6-foot color-coded hoses, and a spacious 5-gallon measuring bucket, this kit makes flushing simple and effective. The included concentrated vinegar dilutes to 4 gallons for a powerful, eco-friendly solution that removes limescale, dirt, and buildup. A replacement filter for Rinnai systems is included for preventative maintenance if needed. With a maintenance log sheet and universal compatibility for most brands, this kit offers everything you need for routine water heater upkeep, saving time and costs.