Smart Replacement
Built with superior quality and reliability, Rinnai's tankless rack systems offer the perfect BTU upgrade for older domestic boiler units that require reheating storage tanks. On retro-fit applications, you can keep your existing tank and pump, and simply replace the system with the lower cost and better-performing TRS.
Built for Business
Comes standard with up to six condensing CX199 Tankless Water Heaters that boast 97% thermal efficiency and a heat exchanger built for the demands of commercial applications.
Rely on Built-in Redundancy
By banking individual tankless water heaters, free-standing racks ensure your business’s hot water supply is uninterrupted — even if a unit is down.
Flexible Installation
Every CX199 Tankless Water Heater installed on the TRS rack can be installed inside or outside using natural gas or propane with multiple common venting options, including PVC or PP.
Application Engineering Center of Excellence
Our team of application engineers is available to provide quotes, size your system and provide designs for your specific project — all at no charge and backed by our 100% system sizing guarantee.