Tankless Water Heater Flushing Kit - Complete 6-Piece Set
With a 4.8-star rating from verified buyers, this is the tankless water heater flush kit that thousands of homeowners and contractors return to season after season. The proven formula: a complete 6-piece descaling kit, citric acid solution included, with no complicated setup and reliable results every time.
What's Included
- 5-gallon bucket with lid
- 1/6 HP submersible pump
- 2 PVC-coated hoses
- 1 qt (32 fl oz) citric acid descaling solution
- Elevated pump grate
Key Features & Benefits
- 4.8 stars from 79+ reviews — consistently praised for ease of use and cleaning effectiveness
- Citric acid descaling solution — 1 qt (32 fl oz) of concentrated formula dissolves calcium scale, lime buildup, and mineral deposits from the heat exchanger
- PVC-coated hoses — durable, flexible, and resistant to solution degradation; connect securely to standard tankless heater service valves
- Elevated pump grate — suspends the pump off the bucket floor for clean, consistent solution draw throughout the entire flush
- Flush in 30 minutes or less — clear infographic instructions walk you through each step
- No plumber required — designed for confident DIY use by homeowners, with the build quality contractors trust
Compatible Tankless Water Heater Brands
Works with virtually every major brand on the market, including Rinnai, Navien, Rheem, Bosch, Noritz, Takagi, Tempra, Ecosmart, Stiebel Eltron, Eccotemp, and others. Whether you need a Rinnai, Rheem, or Navien tankless water heater flush kit, this kit delivers.
The Trusted Standard
Some products earn their reputation through clever marketing. This one earned its 4.8-star rating through consistent performance. If you're looking for the best tankless water heater flush kit that balances value, completeness, and proven results — this is the one. Regular annual flushing removes scale buildup, restores hot water flow, and extends the life of your tankless unit significantly.
Backed by the Chromex Tools satisfaction guarantee. Trusted by homeowners and professionals across North America.
Frequently Asked Questions
How long does it take to flush a tankless water heater? A full flush takes 45 to 60 minutes from start to finish. This includes setup, the 30 to 45 minute circulation cycle, and rinsing. Most homeowners complete the process in under an hour on their first attempt.
Is this kit compatible with my water heater brand? Yes. This tankless water heater flushing kit is compatible with all major brands including Rinnai, Navien, Noritz, Rheem, Bradford White, A.O. Smith, Bosch, and EcoSmart. As long as your unit has standard service port valves, which most tankless heaters do, this kit will connect and work correctly.
How often should I flush my tankless water heater? Manufacturers recommend flushing once per year in areas with average water hardness. If you have hard water, common in Texas, Arizona, Florida, and California, flush every 6 months for best performance and to maintain your warranty.
Can a beginner do this without a plumber? Absolutely. This kit was designed specifically for DIY homeowners. The pump, hoses, and bucket are all pre-matched for compatibility, and step-by-step instructions are included. No special tools or plumbing knowledge required.
What descaling solution is included? The kit includes 1 quart of Chromex citric acid descaling solution, which is non-toxic, biodegradable, and safe for potable water systems. It is more effective than vinegar and rinses cleanly without leaving residue or odor.
