Rinnai Interior 3-Unit Free Standing Rack – Natural Gas | Commercial Hot Water System
Rinnai Interior 3-Unit Free Standing Rack – Natural Gas | Commercial Hot Water System is backordered and will ship as soon as it is back in stock.
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Price Match Guarantee
Price Match Guarantee
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Our 100% Price Match Guarantee has the following restrictions:
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Please Note: Some Exclusions May Apply
Delivery and Shipping
Delivery and Shipping
Your order processing time is 1 to 2 days. Please note that the cut-off time for order placement is 6 p.m. Orders received after this time will be processed on the following business day.
Your order will arrive within 4 to 7 days on average (free shipping over $200). Shipping for orders under $200 incurs a flat fee of $15. We currently offer shipping only within the continental United States (island deliveries may incur additional costs); international shipping is not available.
Mostly all of our orders are shipped via one of our third-party freight carriers (18-wheeler). If your order has an item that is shipped on a freight carrier, you will be contacted to schedule a curbside delivery time. Please make sure to put the correct phone number at checkout.
Upon placing your order, you will receive a confirmation e-mail. This message will confirm your order has been received by our system, and your credit card was approved for purchase. We will not charge your card until the item has shipped unless it's back ordered and we need to hold an item for you.
As soon as your order is received on our end, we process it!
Rinnai Interior 3-Unit Free Standing Rack – Natural Gas | Commercia...
• Authorized Online Dealer
• Free Shipping + No Sales Tax (exclusions may apply)
• We Beat The Lowest Price
• Fast 4-7 Day Delivery
• Manufacturer Warranty Included
• Questions? Call Our Experts: +1 (800) 484-0224
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Description
Description
Maximize your facility’s hot water output with the Rinnai Interior 3-Unit Free Standing Rack, engineered for demanding commercial and multi-unit applications. Featuring an impressive 97% thermal efficiency and a Uniform Energy Factor of 0.98, this natural-gas system provides a sustainable, cost-efficient solution for properties requiring continuous, high-volume hot water.
With a massive 597,000 BTU maximum input, 33 GPM output, built-in recirculation capability, and Wi-Fi connectivity for smart monitoring, this system is built for long-term performance. The modular design allows for easier maintenance, reduced downtime, and dependable water delivery during peak usage periods. Its ultra-low NOx rating ensures clean, environmentally responsible operation that meets strict SCAQMD standards.
Key Features:
- Ultra-Efficient Performance – 97% thermal efficiency with a 0.98 UEF for maximum energy savings.
- High-Capacity Output – Delivers up to 33 GPM, ideal for large commercial properties.
- Powerful BTU Range – 15,000 BTU (min) to 597,000 BTU (max).
- Natural Gas Operation – Reliable, cost-effective heating for continuous supply.
- Recirculation Ready – Supports built-in recirculation systems for instant hot water.
- Wi-Fi Compatible – Enables smart remote monitoring and system diagnostics.
- Free-Standing Modular Rack – Easy installation and maintenance; replaces traditional boilers.
- SCAQMD Ultra Low NOx Approved – Cleaner operation meeting strict emission standards.
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Ideal for Commercial Use – Perfect for hotels, schools, multi-family buildings, industrial facilities, and hospitality operations.
What’s Included
- (3) Rinnai High-Efficiency NG Tankless Water Heater Units
- Heavy-duty Free Standing Rack System
- Factory-assembled gas, water & vent connections
- Integrated recirculation-compatible configuration
- Wi-Fi connection capability
- Installation manual & safety documentation
Specifications
| Specification | Details |
|---|---|
| Manufacturer Trade Model (U.S.) | TRS03CUiN |
| Gas Type | Natural Gas |
| BTU Input | 15,000 (min) – 597,000 (max) |
| Domestic Hot Water Flow Rate | 33 GPM / 124.9 L/min |
| Uniform Energy Factor (UEF) | 0.98 |
| Thermal Efficiency | 97% |
| Recirculation Capable | Yes |
| Wi-Fi Capable | Yes |
| SCAQMD Rating | Ultra Low NOx |
| Product Width | 47 in / 1194 mm |
| Product Depth | 28.59 in / 726 mm |
| Product Height | 57.69 in / 1465 mm |
| Product Weight | 290 lb / 131.5 kg |
Care & Maintenance Instructions
- Schedule annual professional maintenance to ensure peak performance and safety.
- Keep all vents and air intakes clean and unobstructed.
- Inspect for gas, water, or venting leaks regularly.
- Ensure system settings and performance are monitored via Wi-Fi or control interface.
- Avoid storing chemicals, flammable materials, or corrosive agents near the unit.
- Follow all Rinnai-approved guidelines for descaling and system flushing.
Let customers speak for us
The rugged rock-like exterior blends beautifully into our deck design. The seating for six is spacious, and the 10 therapy jets deliver smooth and relaxing streams. Heats quickly and hides all the mechanicals underneath. Totally exceeded our expectations.
much better than our old open fireplace
We love it! It looks very realistic!
Love the tropical vibes it brings to my backyard. Worth every cent. Fast ship and great service.
Peaceful water sound and super easy to maintain.
Looks great in the living room. It puts out really nice flames.
This massive waterfall made our pool feel like a resort. The roar of that cascade is hypnotizing and the finish looks incredibly lifelike. We chose brown rock and it blends perfectly. Installation needed 3 people, but totally worth it.
Does exactly what it’s supposed to do.
Looks incredible in the backyard. Setup wasn’t hard
We sold our wood unit for this, and haven’t looked back. Easy pilots, no mess, looks great
This grill is a beast! Super high quality.
Works well. Sent in a timely manner. Cheapest online too!
Installation was extremely easy. Came with all the equipment needed!
We wanted something tropical, this fit perfectly!
