Rinnai CU Series Super High-Efficiency 3-Unit Interior Wall Hanging Rack (Propane)
- Authorized Online Dealer
- Free Shipping (exclusions may apply)
- We Beat The Lowest Price
- Fast 4–7 Day Delivery
- Manufacturer Warranty Included
- Questions? Call Our Experts: +1 (800) 484-0224
Rinnai CU Series Super High-Efficiency 3-Unit Interior Wall Hanging Rack (Propane) 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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The Price Match Guarantee includes will be calculated based on item price, sales tax, shipping charges
Price Matches Do Not Apply For Exchange Orders, or replacements
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 CU Series Super High-Efficiency 3-Unit Interior Wall Hanging...
• 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
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Description
Description
Experience unmatched performance and energy savings with the Rinnai CU Series Super High-Efficiency 3-Unit Interior Wall Hanging Rack. Engineered for demanding food service and hospitality applications, this modular wall-mounted design delivers continuous hot water while maximizing space and efficiency.
With an impressive Uniform Energy Factor (UEF) of 0.98 and 97% thermal efficiency, the Rinnai CU Series ensures reduced energy costs and superior performance. This 3-unit rack system offers a combined output up to 597,000 BTU, capable of delivering 33 GPM for high-demand commercial kitchens.
Ideal for replacing traditional storage tanks or older HE systems, the CU Series’ advanced features — including Wi-Fi capability, recirculation readiness, and Ultra Low NOx compliance — make it a smart, sustainable, and future-proof investment for your business.
Key Features:
- Super High-Efficiency Performance – 0.98 UEF and 97% thermal efficiency for lower energy consumption.
- Compact Wall-Mounted Design – Frees up valuable floor space while providing easy maintenance access.
- High BTU Output – 15,000 to 597,000 BTU range for consistent hot water in high-demand environments.
- Smart Connectivity – Wi-Fi capable for convenient system monitoring and control.
- Recirculation Ready – Designed to reduce wait times and water waste.
- Ultra Low NOx Emissions – Environmentally responsible and SCAQMD approved.
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Ideal for Commercial Use – Perfect for restaurants, hotels, and industrial kitchens.
What’s Included![]()
- (3) Rinnai CU Series Tankless Units (Propane)
- Wall Hanging Mounting Rack System
- Pre-Assembled Manifold Connections
- User & Installation Manual
- Wi-Fi Module (pre-integrated)
Specifications:
| Specification | Details |
|---|---|
| Manufacturer Model Number | TRW03CUiP |
| Product Type | 3-Unit Wall Hanging Rack (Interior) |
| Gas Type | Propane |
| Uniform Energy Factor (UEF) | 0.98 |
| Thermal Efficiency | 97% |
| BTU Range | 15,000 (min) – 597,000 (max) |
| Max Hot Water Flow Rate | 33 GPM / 124.9 L/min |
| Recirculation Capable | Yes |
| Wi-Fi Capable | Yes |
| SCAQMD Approved | Ultra Low NOx |
| Product Height | 56.67 in / 1439 mm |
| Product Width | 65 in / 1651 mm |
| Product Depth | 13 in / 330 mm |
| Product Weight | 248 lb / 112.5 kg |
Care & Maintenance Instructions
- Schedule annual professional servicing to ensure maximum efficiency.
- Inspect for debris or dust around vents and air intakes regularly.
- Use only approved Rinnai cleaning solutions for internal flushing and descaling.
- Check and clean water filters and recirculation lines periodically.
- Keep Wi-Fi connection active for system alerts and performance monitoring.
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
This grill is a beast! Super high quality.
We sold our wood unit for this, and haven’t looked back. Easy pilots, no mess, looks great
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!
