Onsen 5L Outdoor Portable Propane Tankless Water Heater 1.3 Gal/Min 32K BTU with 3.0 Pump


The Onsen 5L Portable Propane Water Heater with 12V Pump turns cool water into instant hot water so you can enjoy a hot shower on all your outdoor adventures.

Ideal for heating summer water temperatures of 60°F / 15°C and warmer, this lightweight, portable water heater turns cool water into instant hot water on demand and features an electronic ignition (no pilot light and no wasted gas) activated by water pressure and flow.

Bring water pressure to your tankless water heater! The Onsen 3.0 RV / Marine Diaphragm 12V Water Pump is an integral part of any off-grid water system. Factory calibrated for seamless installation. It features noise-absorbing mounts and a pressure switch to turn the pump on automatically when the tap is opened.

Featuring a premium shower head, digital screen and included 12V battery clips, the Onsen 5L runs on a standard propane tank and is perfect for hunting camps, off-grid cabins, camping, boating, pet grooming, horse trailers, stables or simply rinsing off by the pool.

Bring the comfort of Onsen to all your outdoor adventures!

Please note that pump water hoses shown in image are not included.

SKU: ON-PWH-5L-DP30 Category:

Additional information

Weight 10.5 lbs
Dimensions 14.6 × 11.8 × 4.9 in

Default Title


Model 5L
BTUs 32,000
Fuel type Liquid propane
Portable Yes
Water Pressure Requirement 10-80 PSI
Ignition system 2 “D” batteries / 12 volts
Max temperature 50°C / 122°F
CSA Listed Yes
Indoor/Outdoor Outdoor
Vent Type None required
Weight 10.5 lbs / 4.76 kg
Dimensions 14.6 x 11.8 x 4.9 in.
Warranty 2-year limited

Operating Manual

Operating Manual 5L Portable Tankless Water Heater Operation Manual Diaphragm RV / Marine Water Pump Onsen 1.0L Accumulator Tank


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