Pundmann Therm Boiler 9L TOWER 12V/230V – Hot Water for Campers & Boats

Product Description

Do you want a reliable supply of hot water—whether at a campsite, in a food truck, or on board? The Pundmann Therm Boiler 9L TOWER delivers exactly that: 9 liters of hot water on demand, powered by 12V/200W from the vehicle battery or 230V/500W from shore power—no need to switch plugs, no compromises. The slim, vertical design fits where conventional horizontal boilers simply don’t have room. Manufactured in the EU, with a stainless steel inner tank and CE certification—that’s mobile hot water at a truly high level of quality.

Customers who have switched from horizontally mounted water heaters to the Pundmann TOWER report significantly more storage space in their vehicle conversions and noticeably greater convenience in everyday use. Especially in family-oriented conversions and commercial vehicles such as food trucks, the 9-liter capacity has established itself as the ideal compromise between capacity and installation space—proven in practice in numerous conversion projects across Germany, Austria, and Switzerland.

Application

The Pundmann Therm Boiler 9L TOWER was developed for mobile applications where installation space is limited but the need for hot water is real. In RV conversions, it replaces bulky horizontal boilers and fits into narrow cabinet niches or utility shafts. In food trucks and catering vehicles, it reliably supplies dishwashing and hygiene stations—even without mains power. On boats and yachts, its vertical design ensures seamless integration into cabin interiors. Mobile service vehicles—from mobile hair salons to tradespeople’s vans—benefit from its compact 9-liter capacity, which easily lasts a full workday. Even in off-grid applications with a solar system and battery backup, the TOWER fully leverages its 12V capability.

Advantages

• 9-liter tank capacity—enough for a water-saving camping shower, dishwashing, and laundry
• Dual-Power 12V DC / 230V AC – maximum flexibility on the road and at the campsite
• 200W at 12V – efficient operation without overloading the vehicle’s electrical system
• 500W at 230V – fast heating when connected to shore power in about 45–60 minutes
• Vertical TOWER design saves up to 30% in installation depth compared to horizontal models
• Stainless steel inner tank – corrosion-resistant, durable, no flaking due to temperature fluctuations
• Compact dimensions of 228 × 500 × 200 mm for tight installation niches and utility shafts
• Integrated thermostat and safety temperature limiter for safe continuous operation
• Suitable for RVs, vans, boats, food trucks, and mobile service vehicles
• Manufactured in the EU by Pundmann—certified quality, strict quality control, short supply chains

Advantages over previous solutions

• Compared to instantaneous water heaters, the 9L tank provides a buffered heat supply—no drop in water pressure when drawing water from multiple outlets simultaneously
• Compared to 12V-only water heaters, the 230V option allows for significantly faster heating when connected to shore power—in about 45–60 minutes instead of several hours
• Compared to horizontally mounted water heaters, the TOWER design saves up to 30% in installation depth—ideal for narrow cabinets and niches in vehicle interiors
• Compared to gas water heaters, there is no need for time-consuming gas installation, gas connection, or exhaust venting
• Compared to external heating solutions such as electric kettles or kettles on the stove, the water heater delivers hygienically safe, constant-temperature hot water at the touch of a button

Why PUNDMANN?

• Pundmann manufactures in the EU—stricter quality control and shorter supply chains than with many imports from the Far East
• The TOWER design is specifically engineered for tight installation spaces—not every competitor offers this vertical option
• Stainless steel inner tank instead of enameled steel—no chipping, no risk of rust due to temperature fluctuations during mobile use
• True dual-power operation (12V + 230V) without external adapters or retrofitting—integrated at the factory and CE-certified
• Pundmann support in German—direct contact with specialists, without language barriers or long ticket wait times

Technical Specifications

Shipping costs:

Normal package: 9.
PRIO Normal package: 15.
Bulky goods package: 29.
Prio bulky goods package: 39.00
3x or more bulky goods parcels: 49.00
Prio 3x or more bulky goods parcels: 69.00
Piece goods: 99.
Collection: Free of charge

We deliver throughout Switzerland and to Liechtenstein. 

The costs are displayed in the checkout BEFORE payment. 

Bulky goods packages Parts with one side longer than 1 meter, e.g. Armaflex, solar, felt, aluminum profiles... 

General cargo: These are some batteries or large items that have to be shipped by freight forwarder. (Air conditioners...)

PRIO (selectable in the checkout at an additional cost) means that we pack these parcels first and hand over orders to the post office by 16:00 on the same day. These parcels are handed over to the post office with PRIO stickers and should arrive the next day. 

A pick-up in Winterthur can be selected at check-out. Please leave your email so that our system can let you know when it is ready for collection. (Usually happens within 24 hours)