HYDRONIC RV HEATERS
HYDRONIC RV HEATERS
Upgrade your motorhome with Eberspacher Hydronic water heating systems for ultimate comfort. These advanced units integrate directly into your vehicle’s coolant circuit to pre-heat the engine for smooth starts, while simultaneously providing consistent cabin warmth and domestic hot water for showers and washing. Ideally suited for larger RVs, the Hydronic series ensures efficient heat distribution on demand.
Powerful 5kW Water Heating for Engine & Living Space.
HYDRONIC S3 D5E
Transform your motorhome into a fully equipped mobile base with the Eberspacher Hydronic S3 D5E. This compact 5kW water heater integrates directly into your vehicle's coolant circuit to deliver a comprehensive solution: engine pre-heating for smooth cold starts, consistent cabin warmth, and via a calorifier continuous domestic hot water for showers and taps.
Engineered for undisturbed sleep, the S3 features advanced "stepless" performance control. By dynamically modulating heat output between 1.3kW and 5kW, it eliminates the noisy "stop-start" cycles typical of older units. Paired with a robust brushless fan motor and high-altitude capabilities (operable up to 3,000m with the EasyStart Pro), this is the definitive, whisper-quiet heating upgrade for year-round touring.
View full technical specs and installation kit options.
Space-Saving All-in-One Heating
HYDRONIC D5 WSC
Maximize your vehicle's installation space without compromising on comfort with the Eberspacher Hydronic D5WSC. This definitive "Compact" 5kW solution is engineered specifically for tight engine bays and chassis where standard modular heaters simply won't fit. Uniquely, it features internally integrated water and fuel metering pumps, drastically reducing the unit's footprint and simplifying the installation process by eliminating the need for external pump mounting.
Despite its condensed size, the D5WSC delivers serious performance. It integrates into your coolant circuit to pre-heat the engine for smooth, wear-reducing starts in freezing conditions. Simultaneously, it powers matrix blowers for cabin warmth and connects to a calorifier to provide on-demand domestic hot water for showers. With fewer external components and wiring, this robust all-in-one unit offers superior reliability and protection for year-round adventure.
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High-Power Heating for Large Motorhomes & RVs.
HYDRONIC M2
Command the comfort of your largest journeys with the Eberspacher Hydronic M2 (MII) series. Engineered specifically for A-Class motorhomes and heavy-duty expedition trucks, this powerhouse heater (available in 8kW, 10kW, and 12kW) is designed to manage the massive coolant volumes of large diesel engines. It ensures reliable engine pre-heating to reduce cold-start wear while simultaneously driving the most demanding heating circuits.
The M2 goes beyond standard climate control. Its high thermal output effortlessly powers extensive underfloor heating systems, multiple radiator networks, and large-capacity calorifiers to provide abundant domestic hot water for the whole crew. Built with commercial-grade durability, a long-life brushless motor, and biodiesel compatibility (D12L models), the M2 guarantees a warm, reliable base camp in the most remote and extreme environments.
View technical data sheets and system configuration details.
HYDRONIC S3 D5E
The modern standard 5 kW water heater for campers and motorhomes.
Features “stepless” heating control for consistent temperatures and whisper-quiet operation.
Ideal for heating the cabin via matrix blowers and providing domestic hot water through a calorifier.
Automatic altitude adjustment up to 3,000 meters (approx. 9,800 ft) when paired with the EasyStart Pro.
HYDRONIC D5 WSC
The definitive “Compact” 5 kW all-in-one heating solution.
Uniquely features internally integrated fuel and water pumps to minimize installation footprint.
Perfect for vehicles with tight engine bays or limited chassis space where modular units won’t fit.
Delivers powerful engine pre-heating and on-demand hot water with simplified wiring and plumbing.
HYDRONIC M2
Heavy-duty heating authority available in 8 kW, 10 kW, and 12 kW variants.
Engineered for A-Class motorhomes and large expedition vehicles with massive coolant volumes.
Effortlessly drives extensive underfloor heating loops, radiator networks, and large-capacity calorifiers.
Built with commercial-grade durability and offers biodiesel compatibility (D12L models) for remote travel reliability.