5581A Suburban RV Tankless, Continuous Hot Water Heater

Suburban Nautilus IW60 On-Demand Water Heater

Enjoy endless hot water with the Suburban Nautilus On-Demand RV Water Heater. Say good-bye to waiting for water to reheat in a conventional tank. Showers and baths are best enjoyed slowly, so live free from the restraints of limited hot water supplies. Dishes and even the laundry can be done with an infinite supply of hot water whenever and wherever, simultaneously from every fixture.

Use with Thermostat 162291 (White) or 162292 (Black)

Key Functional Features

• Continuous hot water with on‑demand heating—no tank, no recovery time

• Propane‑powered burner system for high‑output heating

• Electronic ignition (no pilot light)

• Compact, lightweight design suitable for RV retrofits

• Indoor installation per your product metafields

• Horizontal orientation (from your Shopify category data)

• Energy‑efficient burner system optimized for RV use

With no storage tank to heat water, the Nautilus On-Demand RV Water Heater reduces weight and increases efficiency by only operating when the need for hot water arises. Weighing just 36 lbs. with the vent assembly, the Nautilus On-Demand RV Water Heater comes standard with a freeze protection mechanism and state-of-the-art 3-Try Direct Spark Ignition for safe and reliable operation.

• Exclusive 60,000-BTU two-stage self-modulating combustion system (MCS)
• Built-in freeze protection
• MCS monitors inlet water temperature and water flow, output water temperature, heat exchanger, and burner operation
• Instantaneously adjusts LP gas input for consistent and endless comfort regardless of hot water needs
• Only 36 lbs. installed
• Porcelain-lined steel tank for long life
• Anode rod to "absorb" electrolytical action
• Tank is pressure-tested twice to ensure integrity

Specs
Type: LP Gas
Ignition Type: Pilot and Direct Spark Ignition
BTU Level: 60,000 BTUs
Dimensions: 20"D x 12.5"W x 12.5"H