The Rinnai 119-Gallon Gray Storage Tank (Model ST119) is engineered for performance, durability, and reliability. Designed for commercial applications, this high-capacity tank works seamlessly with Rinnai commercial water heating systems to provide consistent hot water storage and dependable flow.

Crafted with premium materials and a corrosion-resistant finish, the Rinnai ST119 ensures long-lasting performance and minimal maintenance. Its sleek gray exterior complements professional settings while its efficient thermal retention reduces energy loss — making it the perfect choice for restaurants, hotels, and industrial facilities.

Key Features:

• Large 119-Gallon Capacity – Ideal for high-demand commercial water systems.
• Durable Gray Finish – Built with corrosion-resistant materials for longevity.
• Seamless Compatibility – Designed to integrate perfectly with Rinnai commercial units.
• Efficient Heat Retention – Minimizes energy loss for optimal performance.
• Commercial-Grade Reliability – Engineered to meet heavy-duty daily use demands.
• Low Maintenance – Simple design and construction for hassle-free upkeep.
  

What’s Included

• 1 × Rinnai 119-Gallon Gray Storage Tank (Model ST119)
• Installation and operation manual
• Factory warranty documentation
  

Specification

Care & Maintenance Instructions

• Inspect regularly for signs of corrosion or leaks.
• Flush the tank annually to remove sediment build-up.
• Ensure all fittings and connections are properly sealed.
• Avoid exposure to harsh chemicals or abrasive cleaners.
• Follow all Rinnai manufacturer maintenance guidelines for best performance.