6699 Tankless Water Heater Flush Kit – Sump Pump, Hoses, Adapters & Bucket Lid Opener

Complete Tankless Heater Maintenance Solution

Keep your tankless hot water system performing reliably with the 6699 Tankless Water Heater Flush Kit. This all-in-one package combines essential tools for an efficient flush, helping you manage routine maintenance with greater ease. The kit centers on a compact 1/4 HP submersible pump, two adapters to fit common isolation valves, two stainless steel braided hoses with washers, and a 3-gallon bucket paired with a dedicated lid opener. A purpose-built bucket keeps your setup organized and minimizes mess, making the process smoother from start to finish.

Setup is straightforward and designed for versatility. Attach the hoses to the heater’s isolation valves, then prepare a flush solution by mixing one gallon of vinegar or a biodegradable cleaner with one gallon of water (cleaning agents are not included). The submersible pump delivers water up to 18 feet high and moves up to 1600 gallons per hour, providing steady flow without requiring bulky equipment. The hoses’ stainless steel braid resists rust and features universal 3/4 inch NPT copper connections for broad compatibility with common fittings.

What’s Included and How It Helps

• Tankless heater clean kit with everything needed to start a flush and maintain system performance
• Submersible pump with a 1/4 HP motor for effective water circulation
• Two adapters to connect to standard isolation valves
• Two 6-foot stainless steel braided hoses with washers for secure, durable connections
• Three-gallon bucket with a lid opener for easy access and cleanup
• Ergonomic bucket lid opener offering leverage and a confident grip

In addition to tankless heater maintenance, the kit’s portability and robust components make it suitable for draining water from other setups such as hot tubs, pools, or basements during needed flushes or drain tasks. The compact design supports a tidy workspace and helps you approach maintenance with clarity and control.

Usage Tips and Realistic Expectations

For best results, follow a simple setup sequence: connect the hoses to your heater’s isolation valves, prepare the flush solution as described, and run the pump to circulate the cleaner through the system. While the kit is built to reduce setup friction and improve handling, outcomes depend on your specific heater model and water quality. This kit is intended to support routine maintenance as a preventative practice, not to guarantee a particular result.

Note: Vinegar or biodegradable cleaning agents and any model-specific instructions are not included. The kit provides the tools to perform a flush safely and efficiently while you follow your equipment manufacturer guidance.