Pundmann Therm Boiler 9L – 12V+110V Water Heater TOWER
The Pundmann Therm 9L Dual-Heater Boiler is the largest standard Pundmann Therm, delivering ample hot water capacity for couples or those who don't want to ration their showers on the road. This version is a vertically oriented tower. The upgraded 110V/1000W element heats water faster on shore power, while the 12V/200W rod keeps you self-sufficient off-grid.
You can standardize with 2 rods, which is very efficient, or you could opt to add an additional heating rod to zap water quickly.
Key Features
- Dual heating: 12V DC / 200W + 110V AC / 1000W
- Option for 3rd 1000W Element for 2200W total
- 9-liter food-grade 304 stainless steel tank
- 3.5 bar pressure relief valve — safe for pressurized water systems
- EPP soft-shell insulation for excellent heat retention
- Auto shut-off thermostat at 70–75°C
- Ideal capacity for 1–2 person van or overland builds
- Drain valve opening to blow out for winterization
- Mixing valve Included to avoid scolding temperatures
- DC/DC switch included to optionally turn on heating elements (Fast and Slow energy-efficient heating options)
Specifications
- Capacity: 9 Liters
- Voltage: 12V DC / 110V AC (US spec)
- Power: 200W (12V) / 1000W (110V)
- Max Pressure: 3.5 bar
Dimensions

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The Pundmann Therm 9L Dual-Heater Boiler is the largest standard Pundmann Therm, delivering ample hot water capacity for couples or those who don't want to ration their showers on the road. This version is a vertically oriented tower. The upgraded 110V/1000W element heats water faster on shore power, while the 12V/200W rod keeps you self-sufficient off-grid.
You can standardize with 2 rods, which is very efficient, or you could opt to add an additional heating rod to zap water quickly.
Key Features
- Dual heating: 12V DC / 200W + 110V AC / 1000W
- Option for 3rd 1000W Element for 2200W total
- 9-liter food-grade 304 stainless steel tank
- 3.5 bar pressure relief valve — safe for pressurized water systems
- EPP soft-shell insulation for excellent heat retention
- Auto shut-off thermostat at 70–75°C
- Ideal capacity for 1–2 person van or overland builds
- Drain valve opening to blow out for winterization
- Mixing valve Included to avoid scolding temperatures
- DC/DC switch included to optionally turn on heating elements (Fast and Slow energy-efficient heating options)
Specifications
- Capacity: 9 Liters
- Voltage: 12V DC / 110V AC (US spec)
- Power: 200W (12V) / 1000W (110V)
- Max Pressure: 3.5 bar
Dimensions

Share some information about your product
Share some information about your product
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