Meet the Rinnai Sensei 9 GPM Outdoor Condensing Tankless Water Heater—the compact powerhouse that delivers endless hot water for your whole home while trimming energy bills. Perfect for spaces where size matters and comfort is non-negotiable.

Key Features & Design

• Flow and capacity: Up to 9 GPM with a heating capacity of 166K BTU, ensuring back-to-back showers stay warm.
• Outdoor condensing tankless design; installs inside or outside for maximum flexibility. About the size of a suitcase—fits almost anywhere.
• Efficiency and performance: Backed by a 0.97 UEF rating, one of the most efficient tankless heaters on the market.
• Smart features: WiFi control and intelligent recirculation that learns your habits to save energy and boost convenience.
• Adaptive gas usage: Adaptive valve technology automatically adjusts gas usage with no extra conversion kits needed.
• Temperature control: Custom settings from 98°F to 140°F so you get just the right temperature every time.
• Altitude performance: Works like a charm at 10,200 ft, great for high-altitude homes or cabins.
• Safety and reliability: No standing pilot light means more safety and lower bills.
• Warranty coverage: 15-year heat exchanger warranty and 5-year parts & labor coverage for peace of mind.
• Maintenance: Designed for simple and efficient preventive care, saving time and extending performance.
• Model and SKU: 351-RXP160IN (SAK63590) — the exact specification you’re shopping for.
• Shipping details: Free USA shipping; your unit is packed and shipped within 1–3 business days and delivered in 5–10 business days.