Commercial Water Heating Solutions

We start with completely custom, 100% guaranteed accurate system sizings, returning them within 48 hours of request. Add that to our rigorous product testing before shipping and the industry's leading warranty, and you'll see why Rinnai is the #1 in tankless in North America.

Commercial Water Heating Benefits

Consistent Hot Water

Tankless water heaters provide a constant supply of hot water. You'll never run out of hot water regardless of how many sinks, showers, and appliances are in use at any given time.

Long Lifespan

Rinnai's durable design and easily replaceable components ensure a lower total cost of ownership. For example, the Demand Duo® heat source is outside the tank, reducing thermal stress and lengthening the life of the unit.

Design Flexibility

Rinnai provides true “innovation agility,” meaning you get tailored solutions based on your specific needs and the needs of the building's occupants.

Space Savings

Tankless units will save space, especially when replacing tanks or boilers, freeing up that space for other uses.

Energy Savings

Hot water is “on demand” and not reliant upon a tank that requires constant heating to maintain set-point temperature.

Product Warranties

Get our best-in-class, 8-year warranty (or 12,000 operational hours) on heat exchangers, and a 6-year warranty on the Demand Duo tank.

Products For Any Situation

Emergency Replacement Planned Replacement and New Construction
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01DemandDuo®

Easily replace a standard tank, offering the best of both tankless and tank features in an easy, affordable upgrade.

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Tankless Water Heaters

02Tankless Water Heaters

A continuous supply of hot water with high performance and multiple venting options.

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Tankless Rack Systems

03Tankless Rack Systems

Rack systems are pre-assembled—and are simple to install on site.

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Emergency Replacement

01DemandDuo®

Easily replace a standard tank, offering the best of both tankless and tank features in an easy, affordable upgrade.

View Products
Planned Replacement and New Construction
Tankless Water Heaters View Related Products

02Tankless Water Heaters

A continuous supply of hot water with high performance and multiple venting options.

View Products
Tankless Rack Systems View Related Products

03Tankless Rack Systems

Rack systems are pre-assembled—and are simple to install on site.

View Products

Get a custom solution and a professional installation for your business from our Rinnai experts.