Nautilus Direct Water Heater With 2-3" Flue Kit by Suburban brings unlimited hot water to your RV adventures and everyday tasks without the weight of a storage tank. Designed for on-demand utility, this compact system delivers hot water exactly when you need it—whether you’re showering after a long day on the road or running dishes and laundry simultaneously across fixtures. What makes Nautilus unique - Exclusive 60,000 BTU Two-Stage Self-Modulating Combustion System (MCS): The unit smartly adjusts LP gas input in real time to match your hot water demand. You get steady, comfortable temperatures without overshooting or wasting energy, whether you’re rinsing off quickly or filling the tub for a long soak. - On-Demand efficiency with no storage tank: By heating water only as needed, the Nautilus reduces overall weight and improves efficiency—perfect for RVs where every pound matters and space is precious. - Built-in freeze protection and reliable ignition: A robust freeze-protection mechanism guards against cold-weather water lines, while the 3-Try Direct Spark Ignition provides safe, dependable startup every time. - Lightweight and compact design: Weighing just 36 pounds with the vent assembly, it’s easier to install and ideal for tight spaces in motor homes or lightweight cabins. The installed dimensions (about 318 x 318 x 521 mm) fit smaller mechanical spaces without sacrificing capacity. - Ready-to-install kit with venting included: The package includes the Nautilus Direct Water Heater (RVC605), the Black Control Panel (RVC606), and the 2-3" Vent (RVC607), giving you a complete solution for immediate setup. Real-world use cases - RV living and travel: Enjoy continuous hot water for showers, washup, and laundry on extended trips without worrying about reheat cycles or running out. - Small-space homes and cabins: In off-grid or limited-space environments, you’ll appreciate the light footprint and instant hot water whenever the need arises. - Multi-fixture scenarios: With on-demand heating, you can run showers, dishes, and laundry at the same time and still maintain comfortable water temperatures at each outlet. Why this matters to you - Consistent comfort across every fixture: The two-stage modulation system ensures hot water temperature stays steady even as multiple taps demand heat. That means fewer temperature swings and a more predictable experience. - Easy maintenance, safer operation: The direct spark ignition and integrated freeze protection reduce maintenance headaches and provide peace of mind in variable climates. - Clear value in your RV setup: Lightweight, efficient, and designed for RV plumbing configurations, Nautilus helps you maximize available cargo space while delivering reliable hot water on demand. What you’ll receive in the kit - Nautilus Direct Water Heater (RVC605) - Nautilus Control Panel Black (RVC606) - Nautilus 2-3" Vent (RVC607) Specifications and practical notes - BTU: 60,000, two-stage modulation for responsive heating - Weight: 36 pounds (including vent) - Vent size: 2–3 inches - Warranty: Two-year limited warranty for added confidence - Installation footprint: Compact box designed for tight RV or small-space installations Who this is ideal for - RV owners who want a reliable, unlimited supply of hot water without carrying a bulky storage tank - Campers and tiny homes seeking a lightweight, efficient, on-demand water heating solution - Anyone upgrading from a traditional tank heater who needs faster hot water delivery and better overall energy efficiency In short, Nautilus Direct Water Heater With 2-3" Flue Kit is a purpose-built, on-demand solution that aligns with mobile living and compact spaces. It delivers consistent hot water, reduces weight, and simplifies RV plumbing—all while keeping you comfortably outdoors, free from the constraints of limited hot water.