Back by demand; the Improved OTG is officially back in stock.
Our fastest sell-out coil kit just returned to inventory.
Same tough field-proven design; now upgraded with a larger tube diameter for more water output and faster heat build.
This is the mid-size, mid-performance, mid-price workhorse in the lineup.
Limited batch available; once these are gone, they’re gone, again.
No wires. No motors. Just wood, water, you, and the laws of nature.
Upgraded flow. Faster heat. Same tough build.
Built for colder temps, bigger tubs, than the OTG.
Perfect for backcountry setups, remote cabins, or backyards; anywhere you want hot water without the extra gear, engines, pumps, batteries, wires, or mess.
Limited kits available in this run. Once they’re gone, they’re gone.
What’s included:
Improved coils for more water output
Push-on connection
High-heat, high-strength push-on hoses
Quick connect to your tub, with all the connections from your tub to coil
Now featuring high-heat, lightweight poly connections for quicker installs and better portability
What you need:
Drill two holes
Fill and chill
You got this.
*Heads up for international customers; your country may charge import taxes, duties, or brokerage fees on delivery. Those costs are out of our control and are the buyer’s responsibility.
Back by demand; the Improved OTG is officially back in stock.
Our fastest sell-out coil kit just returned to inventory.
Same tough field-proven design; now upgraded with a larger tube diameter for more water output and faster heat build.
This is the mid-size, mid-performance, mid-price workhorse in the lineup.
Limited batch available; once these are gone, they’re gone, again.
No wires. No motors. Just wood, water, you, and the laws of nature.
Upgraded flow. Faster heat. Same tough build.
Built for colder temps, bigger tubs, than the OTG.
Perfect for backcountry setups, remote cabins, or backyards; anywhere you want hot water without the extra gear, engines, pumps, batteries, wires, or mess.
Limited kits available in this run. Once they’re gone, they’re gone.
What’s included:
Improved coils for more water output
Push-on connection
High-heat, high-strength push-on hoses
Quick connect to your tub, with all the connections from your tub to coil
Now featuring high-heat, lightweight poly connections for quicker installs and better portability
What you need:
Drill two holes
Fill and chill
You got this.
*Heads up for international customers; your country may charge import taxes, duties, or brokerage fees on delivery. Those costs are out of our control and are the buyer’s responsibility.
