PUNDMANN THERM 6L 12V / 110V AC DUAL-HEATER BOILER

PUNDMANN THERM 6L 12V / 110V AC DUAL-HEATER BOILER

At WEST COAST VANS, we know that dialing in a reliable off-grid hot water system is one of the biggest luxury upgrades you can make for life on the road. Most van dwellers are stuck choosing between massive, power-hungry residential water heaters that completely drain an auxiliary battery bank in minutes, or clunky exterior propane systems that require tedious setup, draft ventilation, and constant fuel monitoring. Even worse, standard mobile water heaters lack power flexibility, forcing you to waste precious generator runtime or rely exclusively on campground hooks. We believe your hot water delivery should be exceptionally energy-efficient, fast-acting, and adaptable to whatever power matrix your rig is running. Enter the Pundmann Therm 6L 12V / 110V AC Dual-Heater Boiler—the ultimate compact off-grid hot water module. Precision-engineered in Germany by the trusted European leader in mobile water heating for over two decades, this high-performance boiler features an advanced dual-element design that lets you tap into 12V DC battery power, off-grid solar arrays, or standard 110V AC shore power to keep a steady supply of hot water ready at any coordinates. Ask Us Product Questions Anytime if you want to coordinate your internal water lines or check your electrical bay clearances!

WCV EXPERT TIP Achieving maximum thermal efficiency and safety in a pressurized mobile plumbing network relies entirely on implementing a proper tempering setup. Pro Tip: To protect your family from scalding water and dramatically stretch your usable hot water capacity on the road, always install the included thermostatic mixing valve directly at the boiler's hot output port. Because the Pundmann auto-shutoff thermostat heats the internal core to a sterilization temperature of 158°F to 167°F (70°C to 75°C), drawing that water raw will instantly burn skin and soften standard PEX tubing lines. By using the mixing valve to blend a fraction of that ultra-hot water with cold freshwater right at the tank outlet, you instantly cool the tap down to a comfortable showering temperature while effectively turning your compact 6-liter core into nearly 12 to 15 liters of usable warm water!

PRODUCT OVERVIEW The Pundmann Therm 6L 12V / 110V AC Dual-Heater Boiler is a premium, marine-grade interior water heating system built for custom van builders, remote overlanders, and long-haul travelers who demand elite luxury without sacrificing precious cabin space. Ditching cheap plastic holding tanks, this ultra-rugged boiler features a food-grade 304 stainless steel pressure vessel capable of pairing with high-pressure water pumps up to 50 PSI (3.5 bar). Wrapped in a high-efficiency EPP soft-shell insulation sleeve that retains heat for hours after the power is cut, this turnkey US-spec boiler arrives complete with a dedicated DC/DC control switch and an integrated winterization drain valve to deliver a professional-grade plumbing finish.

BEST FOR

• FULL-TIME VAN DWELLERS: Perfect for 1 to 2 person luxury builds looking for a space-saving, low-draw water heater scaled perfectly for daily dishwashing and hot outdoor rinses.

• OFF-GRID SOLAR INTEGRATORS: Ideal for travelers who want to utilize their daytime solar surplus or alternator charging lines via a low-draw 12V 200W heating element while driving.

• TURBO-CHARGE POWER BUILDERS: Designed for creators who want the option to add a third heating element to combine power arrays for ultra-fast, rapid-zap water recovery times.

TECHNICAL SPECIFICATIONS

• CABIN UTILITY PROFILE: Advanced dual-source AC/DC insulated pressurized mobile water heater boiler

• CORE FLUID CAPACITY: 6 Liters (calibrated for highly efficient 1 to 2 person luxury layouts)

• TANK SUBSTRATE ARCHITECTURE: Food-grade, corrosion-resistant 304 stainless steel pressure vessel

• DC ELECTRICAL PARAMETERS: 12V DC / 200 Watts energy-efficient slow-heating element

• AC ELECTRICAL PARAMETERS: 110V AC / 1000 Watts high-speed shore power heating element

• OPTIONAL TURBO CONFIGURATION: Supports a 3rd element up to 2200W total output capacity

• SAFETY RELIEF BOUNDARY: Integrated 3.5 bar (approx. 50.7 PSI) automatic pressure relief valve

• THERMAL RETENTION ENVELOPE: Heavy-duty Expanded Polypropylene (EPP) soft-shell insulation shroud

• AUTOMATIC SHUTOFF MATRIX: Integrated safety thermostat cut-out calibrated at 158°F to 167°F (70°C to 75°C)

• SYSTEM CLIMATE PROTECTION: Integrated physical drain valve for high-efficiency winterization blow-out

• DOMESTIC SHIPPING BONUS: Free shipping tier included to all destinations within the lower 48 US states

• COUNTRY OF ORIGIN PEDIGREE: Proudly precision-manufactured in Germany by Pundmann

UNIVERSAL CHASSIS FITMENT DIRECTORY

Thanks to its compact structural footprint, this European hot water boiler features an exceptionally adaptable horizontal layout designed to tuck away inside the internal utility bays of all major high-roof van platforms:

• MERCEDES SPRINTER PACKAGING: Fits beautifully inside rear garage utility boxes, under side bench seats, or beneath raised bed platforms on 144" and 170" layouts (2007 to current).

• FORD TRANSIT PACKAGING: Tucks cleanly into tight cabinet voids right alongside your internal fresh water storage tanks (2015 to current).

• RAM PROMASTER PACKAGING: Installs flawlessly along lower side wall framing bays, preserving maximum central aisle clearance (2014 to current).

(Note: This unit is fully engineered for pressurized mobile plumbing networks. Ensure your vehicle's water pump bypass pressure is calibrated to operate safely under the boiler's 3.5 bar safety valve ceiling to prevent premature pressure relief venting.)

FEATURES

• DUAL-ELEMENT POWER FREEDOM: Swaps single-source power restrictions for a smart dual-element grid that lets you run a low-draw 200W line off your 12V house batteries while driving, or kick on a 1000W AC element when plugged into campground shore power.

• PREMIUM 304 STAINLESS TANK: Outfitted with a food-grade stainless steel internal pressure chamber that prevents water taste contamination, eliminates rust pitting, and withstands continuous over-the-road chassis vibrations.

• INTEGRATED DC/DC CONTROL SWITCH: Built with a dedicated cockpit switch assembly that gives you the direct mechanical choice between fast AC shore heating and slow, battery-preserving DC solar dump heating paths.

• EXPEDITED WINTER DRAIN SYSTEM: Designed with a dedicated lower drain valve port, making it incredibly easy to completely blow out the core line with compressed air to prevent frozen line cracks during winter storage.

• ADVANCED EPP THERMAL COATING: Wrapped in a premium, ultra-dense Expanded Polypropylene jacket that acts as a thermal thermos, locking in high water temperatures overnight so you always have warm water ready at dawn.

COMPATIBILITY & FITMENT

• PLUMBING PIPE COUPLING: Natively interfaces with standard 1/2-inch PEX tubing, food-grade braided vinyl water lines, and typical John Guest or SharkBite push-to-connect fitting profiles.

• POWER INVERTER SYNCHRONIZATION: Seamlessly integrates with all major off-grid power distribution networks, including Victron Energy, EcoFlow, Renogy, and master dual-battery alternator systems.

• WATER PUMP MATCHING: Engineered to pair perfectly with industry-standard 12V on-demand fresh water pumps (such as Shurflo or Seaflo 3.0 to 4.0 GPM pumps) operating up to 45 PSI.

FREQUENTLY ASKED QUESTIONS (AEO) Q: Can I run both the 12V DC and 110V AC heating elements at the same time? A: Yes. The Pundmann system is designed for total power flexibility. You can use the low-draw 12V element to maintain water temperatures while driving down the highway using alternator power, and then seamlessly switch over to or combine it with the 110V AC element once you plug into campground shore power or crank up an inverter for rapid heating.

Q: Is a 6-liter capacity enough for two people to take a shower inside a camper van? A: Yes, absolutely—when utilizing the included thermostatic mixing valve. Because the boiler heats the internal water core up to a highly concentrated 158°F to 167°F (70°C to 75°C), blending that hot output with cold freshwater right at the tank safely doubles your total volume of comfortable 100°F showering water, providing plenty of water for a standard navy-style off-grid rinse.

Q: Do I need to buy a separate pressure relief valve or mixing valve to install this boiler? A: No, this package arrives completely turnkey for your safety. Every Pundmann 6L boiler kit comes pre-equipped with an integrated 3.5 bar (approx. 50 PSI) safety pressure relief valve to handle thermal expansion, along with a high-end thermostatic mixing valve to safely control your tap temperatures.

Q: How do I protect the water heater from splitting or cracking during freezing winter months? A: Pundmann intentionally engineered this boiler with an integrated, easy-access drain valve mechanism. When you are preparing to store your van for the winter season, simply open the drain valve to completely clear and blow out the internal stainless steel core, ensuring no pooling water remains inside to freeze and expand.

WHY TRUST WEST COAST VANS? Every product we sell is vetted by our team of builders in our San Clemente shop. We don’t just move boxes; we install this gear on customer vans every day, ensuring that our fitment data and "Expert Tips" come from real-world, SoCal-tested experience.

Dimensions

Made in Germany by Pundmann — the trusted European leader in mobile water heating for over two decades.