Rinnai SE Series 6.5 GPM Outdoor Condensing Tankless Water Heater – Natural Gas (RUS65EN)
- 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 SE Series 6.5 GPM Outdoor Condensing Tankless Water Heater – Natural Gas (RUS65EN) 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 SE Series 6.5 GPM Outdoor Condensing Tankless Water Heater –...
• 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
Upgrade your home’s hot water performance with the Rinnai SE Series 6.5 GPM Outdoor Condensing Tankless Water Heater (RUS65EN)—engineered for efficiency, durability, and continuous comfort. Designed for outdoor installation, this ENERGY STAR® certified unit delivers endless hot water while reducing energy costs through advanced condensing technology.
Perfect for small to mid-size homes, the SE Series reliably supports 2–3 bathrooms simultaneously, ensuring consistent water temperature even during peak demand. Its Wi-Fi compatibility offers full remote monitoring, system control, and diagnostics, giving you total convenience at your fingertips. Compact, long-lasting, and built for performance, this tankless solution is an ideal upgrade for modern households.
Key Features:
- Endless Hot Water: Supplies up to 6.5 GPM, ideal for 2–3 bathrooms.
- Wi-Fi Ready: Optional accessory allows remote monitoring and temperature control.
- Advanced Remote Diagnostics: Helps prevent downtime and simplifies maintenance.
- ENERGY STAR® Certified: High-efficiency condensing system reduces energy consumption.
- 2X Longer Service Life: Built with premium components for extended durability.
- Outdoor Installation Ready: No venting system required; compact design saves space.
- Flexible Compatibility: Wi-Fi module works with multiple Rinnai tankless models.
- High Heating Power: 130,000 BTUs with a hot water flow range of 0.26 to 6.5 GPM.
- Reliable Performance: Uniform Energy Factor (UEF) of 0.86 for optimized efficiency.
What’s Included![]()
- Rinnai SE Series RUS65EN Outdoor Tankless Water Heater
- Installation manual
- Outdoor mounting hardware
- Safety & operation documentation
(Wi-Fi module sold separately)
Specifications
| Category | Details |
|---|---|
| Model Number | RUS65EN |
| Series | Rinnai SE Series |
| Hot Water Capacity | 0.26 – 6.5 GPM |
| BTUs | 130,000 |
| Fuel Type | Natural Gas |
| Energy Factor (UEF) | 0.86 |
| Installation Location | Outdoor |
| Color / Finish | White |
| Venting Type | Condensing |
| Bathrooms Supported | 2–3 bathrooms |
| Size Category | 130 |
| Dimensions (W × H × D) | 18.5" × 27" × 10.5" |
| Wi-Fi Capability | Wi-Fi Ready (accessory required) |
Care & Maintenance Instructions
To maximize performance and extend the life of your tankless water heater:
- Flush the system annually to remove scale and mineral buildup.
- Inspect the venting, connections, and exterior for debris or corrosion.
- Check filters and inlet screens every 6–12 months.
- Use only qualified technicians for diagnostics or servicing.
- Keep the unit clear of obstructions to maintain proper airflow.
- Enable Wi-Fi monitoring for early detection of service needs.
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!
