Pundmann Therm Boiler 3L – AC/DC Water Heater 12V+110V
The Pundmann Therm 3L Dual-Heater Boiler is the compact hot water solution purpose-built for van builds, campervans, overlanding rigs, and off-grid adventures. This US-spec unit features two independent heating elements — a 12V/200W DC rod for charging off your vehicle battery or solar, and a 110V/500W AC rod for shore power or generator hookups — giving you total flexibility wherever the trail leads.
Key Features
- Dual heating: 12V DC / 200W + 110V AC / 500W
- 3-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: 3 Liters
- Voltage: 12V DC / 110V AC (US spec)
- Power: 200W (12V) / 500W (110V)
- Max Pressure: 3.5 bar
- Water Connection: 10mm diameter
Dimensions

Whether you're crossing remote terrain or boondocking in the backcountry, the Pundmann Therm 3L ensures a hot shower is always within reach. Made in Germany, engineered for reliability.
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The Pundmann Therm 3L Dual-Heater Boiler is the compact hot water solution purpose-built for van builds, campervans, overlanding rigs, and off-grid adventures. This US-spec unit features two independent heating elements — a 12V/200W DC rod for charging off your vehicle battery or solar, and a 110V/500W AC rod for shore power or generator hookups — giving you total flexibility wherever the trail leads.
Key Features
- Dual heating: 12V DC / 200W + 110V AC / 500W
- 3-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: 3 Liters
- Voltage: 12V DC / 110V AC (US spec)
- Power: 200W (12V) / 500W (110V)
- Max Pressure: 3.5 bar
- Water Connection: 10mm diameter
Dimensions

Whether you're crossing remote terrain or boondocking in the backcountry, the Pundmann Therm 3L ensures a hot shower is always within reach. Made in Germany, engineered for reliability.
Share some information about your product
Share some information about your product
Customers Reviews
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