Knowledge Base
Tankless Flush Kit
Guides & Resources
Step-by-step guides, how-to articles, and product deep-dives on the Chromex Tankless Flush Kit — everything to keep your tankless heater running at peak efficiency.
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Get the complete Chromex Flush Kit — pump, hoses, bucket, and solution in one box. Reusable hardware, works on all brands. Free shipping.
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Flush Kit Guides
Step-by-step how-to guides, maintenance schedules, and product comparisons — everything you need to keep your tankless heater scale-free and running efficiently.
How to Flush a Tankless Water Heater — Step by Step
Complete DIY walkthrough with tools list, safety tips, and brand-specific notes for Rinnai, Navien, Noritz, and all major brands.
Read MoreWhy Your Tankless Heater Needs Annual Flushing
Mineral scale quietly builds inside your heat exchanger — here's what it costs you in efficiency, energy bills, and lifespan if you skip the annual flush.
Read MoreChromex Flush Kit vs. Hiring a Plumber: The True Cost
A plumber charges $150–300 per flush visit. The Chromex kit is a one-time purchase. See the full 10-year cost breakdown side by side.
Coming SoonIs the Chromex Kit Compatible with My Heater?
Full compatibility table for Rinnai, Navien, Noritz, Rheem, Bradford White, A.O. Smith, and all brands with standard ¾-inch service valves.
Coming SoonHow Often Should You Flush a Tankless Water Heater?
The answer depends on your water hardness and usage. Here's the complete schedule — plus the warning signs that mean you're overdue.
Coming SoonWhat Does Mineral Scale Actually Do to a Tankless Heater?
Scale buildup coats the heat exchanger, reducing efficiency by up to 25%, raising your energy bills, and eventually causing premature failure.
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Skip the Plumber.
Flush It Yourself in 60 Minutes.
The complete Chromex kit has everything you need. Buy the hardware once — restock only the solution for each annual flush. Free shipping on every order.