Pundmann Therm 3L AC/DC Water Heater – Compact 12V + 110V Dual-Element Boiler
Reliable Hot Water for Solo Builders & Space-Tight Van Builds
Get dependable hot water in the smallest possible footprint with the Pundmann Therm 3L Dual Water Heater. The 12V / 200W rod runs straight off your vehicle battery or solar, while the 110V / 500W element covers shore-power hookups — giving you flexible hot water whether you're off-grid or plugged in.
Built around a 3-liter food-grade 304 stainless steel tank wrapped in EPP soft-shell insulation for excellent heat retention, it's the compact option for solo builders, campervans, and overland rigs where every inch counts. Engineered in Germany by Pundmann for safe, residential-quality hot water on the road.
Key Features
✔ Dual Heating Elements (12V + 110V)
A 12V DC / 200W rod runs off your battery or solar for true off-grid hot water, while the 110V AC / 500W element heats fast on shore power — so you're covered however you camp.
✔ 3L Food-Grade 304 Stainless Steel Tank
The corrosion-resistant 304 stainless tank keeps your water clean and safe, sized at a compact 3 liters that's perfect for solo builds and tight spaces.
✔ EPP Soft-Shell Insulation
Wrapped in EPP insulation, the Therm 3L holds heat far longer and reduces the energy draw on your system between heating cycles.
✔ Safety Built In
An auto shut-off thermostat holds a safe 70–75°C, a 3.5 bar pressure relief valve makes it safe for pressurized systems, and the included mixing valve blends hot and cold to prevent scalding.
✔ Easy to Live With Year-Round
A built-in drain valve makes winterization blow-out quick and painless, and the included DC/DC switch gives you fast and slow heating modes to match your power setup.
Built for Solo Builders & Serious Van Lifers
Whether you're finishing a compact campervan or adding hot water to an overland rig where space is at a premium, the Pundmann Therm 3L delivers residential-quality hot water without taking over your build. German-engineered, dual-voltage, and ready for life on the road — it's the smart compact choice when every inch and every amp counts.
What's Included
- Pundmann Therm 3L AC/DC water heater (12V + 110V)
- DC/DC switch with fast and slow heating modes
- 3.5 bar pressure relief valve
- Mixing valve to prevent scalding
- Drain valve for winterization
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: 9.1" L x 9.0" W x 7.9" H (231 x 229 x 201 mm)
Why Choose the Pundmann Therm 3L?
- Dual 12V + 110V heating for off-grid and shore-power flexibility
- Compact 3L footprint ideal for solo builds and tight spaces
- Food-grade 304 stainless tank with EPP insulation for clean, long-lasting heat
- Thermostat, pressure relief, and mixing valves for safe everyday use
- Drain valve and DC/DC switch included for easy year-round operation
- German-engineered by Pundmann for residential-quality hot water on the road
