Rinnai RE Series 8.5 GPM Outdoor Natural Gas Tankless Water Heater (RE180EN)
Rinnai RE Series 8.5 GPM Outdoor Natural Gas Tankless Water Heater (RE180EN) is backordered and will ship as soon as it is back in stock.
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Price Match Guarantee
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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 RE Series 8.5 GPM Outdoor Natural Gas Tankless Water Heater ...
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Description
Description
Upgrade your home’s hot water system with the Rinnai RE Series 8.5 GPM Outdoor Natural Gas Tankless Water Heater (RE180EN) — a high-efficiency, space-saving solution engineered for performance and durability. Designed to deliver continuous hot water for multiple applications, this non-condensing outdoor water heater is perfect for modern households seeking reliability, energy efficiency, and convenience.
With a compact copper heat exchanger, LED display, and programmable service reminders, the Rinnai RE180EN combines innovation with simplicity. Built with safety features and optional freeze protection, it ensures dependable performance in all climates.
Ideal for outdoor installations, this unit provides an impressive 180,000 BTUs of heating power and up to 8.5 gallons per minute (GPM) of hot water capacity — enough to handle multiple showers, faucets, and appliances simultaneously.
Why Choose Rinnai RE180EN?
The Rinnai RE180EN delivers endless hot water, lower energy costs, and superior reliability in a compact outdoor-ready design — making it an ideal upgrade for homeowners who value performance and efficiency.
Key Features:
- Powerful Hot Water Output: Delivers up to 8.5 GPM for consistent water flow across multiple fixtures.
- Compact, Space-Saving Design: Sleek 14.05" x 22.87" x 10.77" body fits outdoor setups with ease.
- High Efficiency: 0.82 Uniform Energy Factor (UEF) for energy savings and performance.
- Smart Maintenance: LED screen and programmable service reminders simplify upkeep.
- Durable Copper Heat Exchanger: Provides long-lasting performance and efficient heat transfer.
- Safety-First Design: Includes safety handle, seating bracket, and optional leak detection kit.
- All-Climate Use: Optional freeze protection available for cold environments.
- Reliable Power: Rated at 180,000 BTUs for powerful, consistent heating.
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Outdoor-Ready: Specifically designed for outdoor installation and natural gas operation.
What’s Included
- Rinnai RE Series 8.5 GPM Indoor Tankless Water Heater (Model RE180EN)
- Safety handle and seating bracket
- User manual and installation guide
(Isolation Valve MIVK-T-LW and optional accessories sold separately.)
Specifications:
| Specification | Details |
|---|---|
| Model Number | RE180EN |
| Series | Rinnai RE Series |
| Product Type | Outdoor Tankless Water Heater |
| Fuel Type | Natural Gas |
| Venting Type | Non-Condensing |
| Hot Water Capacity Range | 0.13 GPM – 8.5 GPM |
| BTU Rating | 180,000 BTUs |
| Uniform Energy Factor (UEF) | 0.82 |
| Color/Finish | Silver |
| Installation Type | Outdoor |
| Dimensions (W × H × D) | 14.05" × 22.87" × 10.77" |
| Required Accessory (Sold Separately) | Isolation Valve Kit (MIVK-T-LW) |
Care & Maintenance Instructions
- Inspect Annually: Have a licensed technician perform a yearly maintenance check for optimal performance.
- Clean Exterior: Wipe the outer surface with a soft, damp cloth; avoid harsh chemicals or abrasives.
- Flush System: Descale the unit annually to prevent mineral buildup, especially in hard-water areas.
- Monitor Filters: Check and clean air and water filters regularly.
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Winter Care: Use the optional freeze protection kit in colder climates to safeguard the heater.
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!
