Experience reliable, high-performance hot water on demand with the Rinnai RE Series Smart-Circ™ 6.6 GPM Outdoor Tankless Water Heater. Designed for efficiency, convenience, and durability, this tankless water heater ensures your home always has hot water when you need it, without the wasted energy of traditional storage tanks.

Equipped with Smart-Circ™ technology, the unit intelligently learns your household’s hot water usage patterns and schedules recirculation automatically—no external controller needed. Its compact copper heat exchanger, LED display, and programmable service reminders make maintenance easy while maximizing energy efficiency. The built-in pump and recirculation-ready design provide fast hot water delivery, reducing wait times at every faucet.

Perfect for outdoor installation, this Rinnai model is durable, compact, and designed with safety in mind, featuring a clean internal layout, sliding wall bracket, safety handle, and seating bracket. Whether upgrading an existing system or installing a new one, the RE Series delivers convenience, reliability, and efficiency for modern households.

Key Features:

• Smart-Circ™ Intelligent Recirculation – Learns hot water usage patterns and schedules recirculation automatically; external controller not required.
• Clean Internal Layout – Simplifies maintenance and ensures long-lasting performance.
• LED Screen – Provides clear, easy-to-read information and system status.
• New Sliding Wall Bracket – Simplifies installation and wall mounting.
• Safety Handle and Seating Bracket – Ensures secure handling during maintenance.
• Built-In Recirculation Control & Pump – Recirculation-ready models include a built-in pump for immediate comfort.
• Easy Open/Close Access – Quick maintenance access without complicated disassembly.
• Programmable Service Reminders – Alerts you when routine maintenance is needed.
• Compact Copper Heat Exchanger – Delivers reliable hot water with energy efficiency.
• Optional Kits – Leak Detection and Freeze Protection available.
• High Performance – 160,000 BTUs with hot water capacity from 0.26 GPM to 6.6 GPM.
• Energy Efficiency – Uniform Energy Factor (UEF) of 0.81 ensures energy savings.
  

What’s Included

• Rinnai RE Series 6.6 GPM Outdoor Tankless Water Heater (NG)
• Built-in Recirculation Pump
• Sliding Wall Mounting Bracket
• Safety Handle and Seating Bracket
• Valve Kit
• User Manual with Installation & Maintenance Instructions
  

Specifications:

Care & Maintenance Instructions

• Routine Inspection: Check unit and connections monthly for leaks or damage.
• Filter Cleaning: Clean water inlet filter every 6 months to maintain optimal performance.
• Flushing: Flush unit annually with a descaling solution to prevent mineral buildup.
• Recirculation Maintenance: Ensure Smart-Circ™ pump is functioning correctly; check LED status indicators regularly.
• Professional Service: For major servicing, contact a licensed plumber familiar with Rinnai tankless systems.