Preassembled Rack Systems

The Rinnai Tankless Rack System (TRS) has multiple tankless water heaters mounted to a sturdy, durable rack that arrives ready to meet your most demanding commercial hot water requirements.

Tankless Rack System Benefits

Why Choose a Rinnai System?

  • Lower cost of ownership 
  • Energy savings Durability for the demands of business 
  • Redundancy of units eliminates downtime 
  • Multiple venting options 
  • Superior modulation and load tracking 
  • Longer life 
  • Space Savings

New Construction or Planned Replacement

Rinnai can assit you in the design of your water heating system.

  • 100% Gaurenteed Sizing from our application engineering team
  • Sizings completed within 24-48 hours
  • Audit existing equipment to prevent unplanned failures and unnecessary repairs
  • Turnkey delivery and installation from sizing to start-up

How Modulation Works...

The chart demonstrates the efficiencey that a fully modulating tankless system can provide. The chart generally shows the gas usage of a traditional boiler compared to that of a Rinnai Tankless Water heater. 

  • Peaks represent the tankless unit meeting user demands
  • Valleys represent the saved energy in between

Meeting Your Commercial Needs

Superior Reliability

The Tankless Rack System offers the perfect BTU upgrade of an old-fashioned domestic water boiler. For retrofit applications, you can often keep your existing tank and pump and simply replace with the lower cost and better performing system.

Preassembled with one connection point for gas, water, electrical and the condensate drain, the Rinnai Tankless Rack System offers simple installation while reducing labor time and cost.

Fully Assembled Options


Solve problems like capacity, need for redundancy, plumbing configuration or meeting code requirements with a custom design solution. Let our application engineers handle your project from design to documentation to ensure a smooth installation.

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