Allied Science Tank-less Water Heater Flush Kit helps maintain and extend the lifespan of your tank-less water heater. Kit comes with 5 gallon bucket, 1/6 HP Pump, 2 durable steel hoses. Just add your own descaling solution or vinegar (not included). Our cleaning solution removes scale deposits from tankless water heaters, which helps improve its efficacy and lifespan. Its citric acid based and solvent free formula is safe for use with most metals such as PVC, Rubber and ABS plastic hoses and materials. Its also non corrosive and safe for portable water systems. 6 Foot hoses easily connect to tankless heater valves, and the kit will clean most heaters in 30 minutes or less! Usage instructions are included as an info-graphic on this listing as well as with your kit. Allied Science manufactures thoughtful tools and accessories for both the do-it-yourselfer and the professional. 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. This tankless water-heater cleaning kit includes everything you need to fully maintain your water-heating system. It comes with step-by-step instructions that are easy to follow, and it connects easily to the tankless isolation valves using the supplied 6-foot hoses.