6699 Tankless Water Heater Flushing Kit | Submersible Pump, Adapters & Hoses

Effortless Tankless Water Heater Maintenance

Keeping a tankless heater operating at peak efficiency can be simple and tidy with the 6699 Tankless Water Heater Flushing Kit. This ready-to-use kit is designed to help you flush sediment and sustain performance, using a straightforward cleaning approach. You can mix 1 gallon of vinegar or a biodegradable cleaner with 1 gallon of water and run the solution through the system to flush the lines. (Cleaning agents are not included.) The result is a calmer, cleaner flushing process that fits a typical home maintenance routine.

What is in the kit and how it helps

• 1/4 HP Submersible Sump Pump Compact power with a maximum head of 16.5 ft and a flow up to 1500 GPH, designed for quiet operation and reliable drainage.
• Two Adapters and Two 6 ft PVC Hoses Quick, secure connections to tankless isolation valves for a streamlined flush.
• 3 Gallon Bucket with Lid Opener Ergonomic design that makes lid handling easier and keeps the workspace tidy.

• Bucket Lid Opener Long handle and anti-slip grip to reduce effort when prying lids.
• Specifications Model SUB1500KIT01; 115V/60Hz; 1/4 HP; Max Head 16.5 ft; Max Submersion 23 ft; Max Fluid Temp 95 °F.

In real-world use, this kit supports seasonal maintenance, quick flush sessions, and routine upkeep that may help sustain hot water system performance while keeping noise and mess to a minimum. The included hoses and adapters are designed for straightforward setup and work with standard isolation valves, making the process accessible to many DIY homeowners.

Beyond the basic setup, the kit offers practical touches that improve the maintenance experience. The submersible pump is designed to handle the task without occupying valuable cabinet space, while the bucket and opener provide a stable, ergonomic workflow. The compact assembly is easy to store between uses, and the clear connections help you verify a secure fit before you begin flushing. While results can vary by system, this kit provides a comprehensive, ready-to-use solution for those looking to simplify tankless heater care without specialized tools.