Experience endless hot water with the Rinnai 8.5 GPM Non Condensing 180K BTU Outdoor Tankless Water Heater [351-RE180EN] (SAK35621). This compact, outdoor-ready unit heats water on demand, saving energy and space while keeping busy mornings under control.

Key Features & Design

• Capacity: 8.5 GPM with up to 180K BTU input for fast hot water even during multiple uses.
• Efficiency: Uniform Energy Factor of 0.82 helps you save energy and lower utility bills.
• Outdoor, vent-free: Designed for outdoor use with no venting required, making installation quicker and more affordable.
• Smart control: Pair with the Control-R Wi‑Fi module to monitor and adjust your water heater right from your smartphone.
• Temperature range: Easily adjust water temps between 98°F and 140°F for customized comfort.
• Water pressure range: Handles pressures from 20 psi to 150 psi, ensuring a consistent flow.
• Warranty: 15-year limited residential warranty on the heat exchanger with additional coverage when you register.
• Made in America: Proudly crafted in the USA with durability and reliability you can trust.
• Space-saving design: Ideal for small to medium homes or remodels—big comfort without taking up valuable indoor space.
• On-demand operation: Only runs when hot water is needed, reducing unnecessary energy use and helping the environment.
• Model: 351-RE180EN (SAK35621) — part of the Rinnai Sensei lineup.

Specs and shipping: FREE USA SHIPPING. Your Rinnai Sensei 8.5 GPM Non Condensing Outdoor Tankless Water Heater will be packed and shipped within 1-3 business days and delivered to you between 5-10 business days.