The Onsen 10L Portable Tankless Water Heater is Onsen's most powerful portable water heater and can turn freezing water into instant hot water so you can enjoy a hot shower on all your outdoor adventures.
Ideal for heating spring / fall water temperatures below 45°F / 7°C, the Onsen 10L turns freezing 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.
Designed for the ultimate portability and accessibility wherever you roam, Onsen is the only portable water heater on the market featuring a dual-ignition system with two convenient options to choose from when you're venturing outdoors. Get started with two "D" cell batteries or connect to a 12 volt power source.
Featuring a premium shower head, digital screen and included 12V battery clips, the Onsen 10L 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!
| Model | 10L |
| BTUs | 75,000 |
| Fuel type | Liquid propane |
| Portable | Yes |
| Water pressure requirement | 10-80 PSI |
| Ignition system | 2 “D” batteries / 12 volts |
| Max temperature | 60°C / 140°F |
| Indoor/Outdoor | Outdoor |
| Vent type | None required |
| Weight | 19 lbs / 8.62 kg |
| Dimensions | 25.83 x 13.43 x 8.19 in. |
| Warranty | 2-year limited |
Orders ship the following day from our warehouse in Canada via Purolator, Canpar, UPS, GLS, or Canada Post.
1-2 business days to QC & ON
3-5 business days to MB, SK, & Atlantic Provinces
5-8 business days to AB, BC & Territories
*Excludes remote regions and subject to stock availability.
Orders ship the following day from our warehouse in Canada via Purolator, Canpar, UPS, GLS, or Canada Post.
1-2 business days to QC & ON
3-5 business days to MB, SK, & Atlantic Provinces
5-8 business days to AB, BC & Territories
*Excludes remote regions and subject to stock availability.
Dual ignition system
The only portable tankless water heater on the market to feature both "D" and 12-volt battery ignition.
12-volt alligator clips
Includes 12-volt alligator clips.
LED screen
Simple and precise display of water temperature and battery life.
Premium showerhead
Includes a superior quality On/Off shower head.
Onsen portable water heaters come in three models, each with different heating capacities: the 10L offers maximum heating power, the 7L provides moderate heating, and the 5L has basic heating power. The temperature of the incoming water affects how much power is needed to heat it. For example, during the warmer summer months when water temperature is around 20°C (typical for Canada), the 5L model will deliver comfortably hot water. However, in the colder seasons, when water temperature drops to about 10°C, you'll want a 7L or 10L model for sufficient heating to reach a comfortable temperature.
If your incoming water source will be a garden tap, which is connected to pressurized municipal water, a pump will not be necessary. However, if your incoming water source will be a lake or rain barrel, you will need a pump to pressurize the incoming water.
Onsen portable tankless water heaters are classified as "Portable Water Heaters for Outdoor Use" and are not intended for indoor installation.
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