Instant hot water for outdoor and off-grid use.
The Onsen 5L Portable Tankless Water Heater delivers instant hot water on demand, making it ideal for camping, hunting camps, off-grid cabins, boats, horse trailers, and other outdoor applications. Designed for heating typical summer water temperatures (around 60°F / 15°C and warmer), this lightweight unit is easy to transport, quick to set up, and perfect for temporary outdoor installations.
Fueled by propane, the Onsen 5L provides 32,000 BTU/hr of heating power, runs on a standard 20 lb BBQ propane tank, and can provide up to 16 hours of hot water runtime (usage varies by temperature settings, inlet water temperature, and flow rate).
| Model | 5L |
| BTUs | 32,000 |
| Fuel type | Liquid propane |
| Portable | Yes |
| Gas/water fittings | 1/2" |
| 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 | 18.35 x 11.89 x 6.69 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.
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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