Using an engine heater on agricultural machinery is essential to ensure reliable starts in cold temperatures, reduce engine wear, and lower fuel consumption. Preheating the engine improves combustion, resulting in lower emissions and a longer lifespan for the machine.

The main difference between Calix and Defa engine heaters lies in their connection types—Calix uses flat pins, while Defa uses round pins, making them incompatible with each other.

Calix primarily focuses on hose heaters, which heat the coolant.
Defa offers both block heaters and hose heaters.
It’s crucial to use the same brand throughout the system, as Calix and Defa components are not interchangeable due to their different connection systems.
The best choice depends on your vehicle's requirements and which heater type is most effective for your engine.