Includes concentrated vinegar (dilutes to 4 gallons), Chromex pump, premium braided hoses, 5-gallon screw-top lid bucket, and instructions. Chromex pump delivers consistent water flow for effective flushing and descaling. Premium braided hoses are tear-resistant and leak-proof for secure, long-lasting performance. Large 5-gallon bucket with screw-top lid simplifies solution preparation and transport. Concentrated vinegar offers an eco-friendly, manufacturer-recommended descaling solution. Ideal for professional-grade DIY maintenance to remove limescale and restore efficiency. Replacement filter compatible with Rinnai systems included for optional use, ideal for preventative maintenance and extending system performance. Compatible with leading brands like Rinnai, Bosch, Rheem, Navien, Ecosmart, AO Smith, Noritz, Stiebel Eltron, and more. Safetech’s 5-Gallon Tankless Water Heater Flushing Kit combines a Chromex pump, premium braided hoses, and concentrated vinegar, which can be diluted to 4 gallons of household-strength solution. The screw-top lid add convenience and protection, ensuring effective flushing and descaling.