Suburban Nautilus On Demand Water Heater

Suburban Nautilus On Demand Water Heater. Enjoy endless hot water with the Suburban Nautilus on demand RV water heater. Say “goodbye” to waiting for water to reheat in a conventional tank.


$1,400.00 incl. GST

In stock

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SKU 413-1009 Category


The Suburban Nautilus On Demand Water Heater is for endless hot water on demand. 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.

The EXCLUSIVE 2-Stage Modulating Combustion System (MCS) Monitors: Inlet water temperature, Inlet water flow, Output water temperature, Combustion air fan speed and Heat exchanger & burner operation.


  • Exclusive 60,000 BTU Two-Stage Self Modulating Combustion System
  • Built-In Freeze Protection
  • Only 16.3kg Installed (including optional accessories)
  • Optional access panel 2.3 Kg shipping weight
  • Freeze Protection – Standard
  • Two-Year Warranty


  • MODEL – Nautilus IW60A, 5187A
  • MAXIMUM MJ/hr – 64 (5) burners
  • TWO-STAGE – Self Modulating Combustion System
  • Fuel Source – Universal LP Gas
  • Dry Weight – 15 kg with vent assembly
  • 12VDC = 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
  • Product Dimensions 316.6 mm W x 317.8 mm H x 464.9 mm D


  • 1 x Suburban Nautilus On Demand Water Heater


    This is the Unit ONLY.
    Door, Control Panel, Vents Sold Separately. Please see our other listings for these items.

    Photos of Unit including the Vent is for Illustration purposes ONLY…….

    Click on the link below to learn more.




Please ensure that this product is installed by a Licensed Technician and compliant with Australian Standards, as improper installation can lead to serious injury or death.

Additional information

Weight 15 kg
Dimensions 32 × 32 × 50 cm
Manufacturer Part Number

950-03000, 5187A

Product Length


Product Width


Product Height


Product Weight




Manufacturers Warranty

2 Year


Qualified Electrician Required


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Warehouse only

Warehouse only products are stocked in our off-site warehouse only, and require transfer to our Showroom for collection. If you wish to visit us in store to purchase one of these products, please contact us prior to organise a transfer. Please note that transfers are available for purchases, not for viewing purposes. Transfers occur daily.

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Products marked as available in store are stocked in our Showroom at 33 Fishermans Road, Kuluin. Some products may be out of stock at the time of your visit, so please confirm stock availability prior.

Display available

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Dropship Item

Products marked as dropship items are sent direct from the Manufacturer. This can add an additional 1-3 days processing before your order is despatched.

Please ensure your shipping details are correct when placing an order. We will always endeavour to include a tracking number for your order, however with dropship items this is not always available.

Please contact us if you have any questions or concerns about the shipping of this product.

Made to Order (MTO) Item

Products marked as made to order are manufactured specifically for your order by the Manufacturer. 

If you require an ETA on these items, please contact us prior to placing your order.

IMPORTANT: We are unable to approve returns or refunds on MTO items.

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