Find out which Onsen is right for you
Interested in our products but haven’t quite figured out which one will meet your needs? Let us help.
![](https://cdn.shopify.com/s/files/1/0261/2949/8205/files/Onsen5L.jpg?v=1627655608)
Highlights
Lightweight and portable
(the size of a briefcase)
A practical on-the-go solution suitable for temporary installation
Good for one application at a time (e.g. shower)
Outdoor use only
Recommended use
Summer
(for incoming water temp 10°C or warmer)
Productivity
16.7°C (30°F) temperature increase at 5 liters (1.3 gallons) per minute
Runs for 12 to 16 hours on a 20 pound BBQ propane tank
BTU/h
Weight
Dimensions
18.35 x 11.89 x 6.69 in.
(the size of a briefcase)
![](https://cdn.shopify.com/s/files/1/0261/2949/8205/files/Onsen7L.jpg?v=1627655608)
Highlights
Semi-permanent installation requiring extra power
Capacity to heat freezing water on demand (incoming water temp 10°C or colder)
Up to two applications at the same time (e.g. shower and sink)
Outdoor use only
Recommended use
Spring / Fall / Winter
(for incoming water temp 10°C or colder)
Productivity
16.7°C (30°F) temperature increase at 10 liters (2.6 gallons) per minute
Runs for 8 to 12 hours on a 20 pound BBQ propane tank
BTU/h
Weight
Dimensions
![](https://cdn.shopify.com/s/files/1/0261/2949/8205/files/Onsen10L.jpg?v=1627655608)
Highlights
Semi-permanent installation requiring extra power
Capacity to heat freezing water on demand (incoming water temp 10°C or colder)
Up to two applications at the same time (e.g. shower and sink)
Outdoor use only
Recommended use
Spring / Fall / Winter
(for incoming water temp 10°C or colder)
Productivity
16.7°C (30°F) temperature increase at 10 liters (2.6 gallons) per minute
Runs for 8 to 12 hours on a 20 pound BBQ propane tank
BTU/h
Weight
Dimensions
25.83 x 13.43 x 8.19 in.
(the size of a suitcase)
![](https://cdn.shopify.com/s/files/1/0642/4130/3774/files/14L_Comparison.jpg?v=1716394751)
Highlights
Lightweight and portable
(the size of a briefcase)
A practical on-the-go solution suitable for temporary installation
Good for one application at a time (e.g. shower)
Outdoor use only
Recommended use
Summer
(for incoming water temp 10°C or warmer)
Productivity
16.7°C (30°F) temperature increase at 5 liters (1.3 gallons) per minute
Runs for 12 to 16 hours on a 20 pound BBQ propane tank
BTU/h
97,000 - 100,000
Weight
Dimensions
18.35 x 11.89 x 6.69 in.
(the size of a briefcase)
![](https://cdn.shopify.com/s/files/1/0642/4130/3774/files/26L_Comparison.jpg?v=1716394751)
BTU/h