Introducing the Diesel Heater Spartan Air 12V — a high-performance marine heating solution engineered for comfort, efficiency, and reliability on medium-sized boats. With a robust 4.5 kW output, this Wallas heater delivers steady warmth for cabins up to 12 meters (40 feet) without clutter or compromise.

Why Spartan Air stands apart

• Green, clean burning — the Greenboost laminar burner ensures a smooth, efficient burn with reduced emissions. It can run on standard diesel or HVO renewable diesel, giving you flexible, cleaner fuel options.
• Smart fuel economy — a practical consumption range of 0.16–0.46 litres per hour means you spend less time refueling and more time on the water.
• Superior airflow and air quality — three 75 mm air inlets (three inlets vs. the common single inlet in many heaters) deliver higher air volume with lower resistance, enhancing heat distribution and keeping the cabin fresh.
• Quieter, smoother operation — a variable output and laminar combustion minimize cycling and noise, creating a more comfortable living space below deck or on the deck in windy conditions.
• Remote control and intelligent climate management — the Advanced Control Panel, paired with the Wallas Remote App, lets you start, monitor, and fine-tune heating from anywhere on the boat. The wireless cabin temperature sensor improves accuracy, automatically maintaining your preferred comfort level.
• Smart connectivity, simple maintenance — system updates and diagnostics can be accessed remotely via the app, keeping you informed without scrambling for manuals. The heater can integrate with boat infotainment screens like Yamarin Q-infotainment, Buster Q, and Askeladden C-command for seamless control from familiar interfaces.
• Direct fuel from the main tank — no extra fuel tanks required; feeding directly from the vessel’s primary tank saves space and reduces clutter.
• Durable Finnish engineering — built to withstand harsh marine conditions, with safety-minded design that minimizes heat and exhaust exposure indoors.

How it works

The Spartan Air 12V draws combustion air from outside the boat through an external inlet, while exhaust gases are vented outside via a dedicated inner coaxial pipe. This fully enclosed, laminar burning process delivers stable heat with minimal flame exposure, helping keep interior air clean and odor-free.

Who benefits most

• Boat owners with mid-sized cabins seeking reliable, economical warmth without constant fuel stops.
• Fishermen and live-aboards who value quieter operation and cleaner air inside the cabin.
• Owners who appreciate remote access, diagnostics, and compatibility with marine infotainment systems for effortless control.

With its open-and-close vent configuration, Spartan Air adapts to indoor installations or deck mounting, ensuring flexible placement for optimal heat distribution. The combination of Greenboost technology, multiple air intakes, and smart control creates a heating solution that’s not only powerful, but also energy-conscious and user-friendly — exactly what you need for comfortable, trouble-free sailing.