Suburban Nautilus On Demand Water Heater

Enjoy endless hot water with Suburban’s 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.

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.

The NAUTILUS On Demand RV Water Heater uses an exclusive 60,000 BTU 2-Stage Modulating Combustion System (MCS)
which instantaneously adjusts the LP gas input to provide consistent and endless comfort regardless of your hot water needs.

Suburban’s NAUTILUS On Demand Water Heater - developed with INDUSTRY-BEST:

  • Exclusive 60,000 BTU Two-Stage Self Modulating Combustion System
  • Built-In Freeze Protection
  • Only 16.3kg Installed (including optional accessories)
  • Two-Year Warranty

The EXCLUSIVE 2-Stage Modulating Combustion System (MCS) Monitors:

  • Inlet water temperature
  • Inlet water flow
  • Output water temperature
  • Combustion air fan speed
  • Heat exchanger & burner operation



  • MODEL Nautilus IW60A, 5187A MAXIMUM MJ/hr
  • 64 (5) burners TWO-STAGE
  • Self Modulating Combustion System YES
  • Stage 1 Operation: 2 Burners
  • Stage 2 Operation: 5 Burners
  • Fuel Source Universal LP Gas
  • Dry Weight 15 kg with vent assembly
  • Optional access panel 2.3 Kg shipping weight 
  • 12 VDC = AMPS 2.1 AMPS
  • Operational Voltage Range 10.2 - 14.5 VDC
  • MAXIMUM Output Water Temperature 50°C
  • Output Water Temperature - Factory Setting 50°C
  • Digital Control Center Temperature Range 35° - 50° (C)
  • Liters Per Minute (LPM) Required Flow 1.9 LPM
  • Freeze Protection Standard
  • Warranty 2 Years
  • Product Dimensions 316.6 mm W x 317.8 mm H x 464.9 mm D 
  • (includes inlet & discharge water lines)
  • Suburban Nautilus Control Centre (Sold Separately)

The ON DEMAND CONTROL CENTER provides precise temperature control, reliable and consistent comfort from the convenience of your RV.


SKU 950-03000
Brand Coast to Coast RV
Shipping Weight 15.0000kg
Shipping Width 0.317m
Shipping Height 0.318m
Shipping Length 0.465m
Shipping Cubic 0.046874790m3

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