6699 Tankless Water Heater Flushing Kit | 1/4 HP Submersible Pump, Adapters & 6 ft Hoses

6699 Tankless Water Heater Flushing Kit

Keep your tankless water heater performing at its best with a complete flushing solution designed for ease and reliability. This kit combines a rugged 1/4 HP submersible sump pump housed in stainless steel, a pair of adapters for quick attachment to standard isolation valves, and durable 6-foot PVC hoses with washers. A 3-gallon bucket plus a bucket lid opener add practical convenience to the flushing process. When paired with a biodegradable cleaner or vinegar solution (cleaning agents not included), it enables a controlled flush that helps minimize mineral buildup and support steady hot water delivery.

Real-life scenarios where this kit shines include seasonal homes that sit idle for periods, apartment buildings, or any setting where regular maintenance can help avoid performance dips. The setup is designed for straightforward use: attach the hoses to isolation valves, prepare your cleaning solution, and begin the flush with minimal effort. It’s not a guaranteed outcome, but many users report smoother operation after routine maintenance with a simple flush.

What’s inside and how it helps

• 1/4 HP submersible pump with a stainless steel housing for durability and quiet operation.
• Two adapters to fasten connections to standard tankless isolation valves, reducing setup time.
• Two 6-foot PVC hoses with washers to ensure a secure, leak-resistant flow.
• A 3-gallon bucket with a lid opener to simplify lid removal and keep cleanup neat.
• Ergonomic bucket lid opener designed for safer handling and easier leverage.
• Specifications: 115V/60Hz; Max Head 21 ft; Max Flow 1500 GPH; Max Submersion 16 ft; Max Fluid Temp 95°F.

How to use (quick overview): connect the hoses to the isolation valves, mix one gallon of vinegar or a biodegradable cleaner with one gallon of water (cleaning agents not included), and run the pump to flush. After flushing, rinse with clean water and resume normal operation. Always follow your heater manufacturer’s guidelines for flushing intervals and cleaning agents.

Why choose 6699 for your maintenance toolkit

This kit is built for durability and ease of use, supporting homeowners and service pros who value straightforward setup and reliable parts. The stainless steel sump pump resists corrosion, the bucket lid opener reduces strain during lid removal, and the hoses with washers provide a snug, leak-resistant connection. The result is a practical, all-in-one solution you can trust for routine tankless heater care.

Specifications at a glance

• Pump: 115V/60Hz; 1/4 HP; max head 21 ft; max flow 1500 GPH; submersion depth 16 ft; max fluid temp 95°F.
• Bucket: 3 gallons; bucket lid opener included; hoses: 6 ft x 2 pcs; washers included.
• Includes: 2 adapters for valve connections; ergonomic lid opener; durable hardware.