A Calix engine heater is an electric device that preheats the engine before starting. By warming up the engine in advance, it reduces wear during cold starts, improves fuel efficiency, and lowers emissions.

A hose heater is a unit that warms the engine via the cooling system. It is installed in one of the radiator hoses and uses a heating element to warm the coolant, which then circulates through the engine. This type of heater is effective in cold climates and makes starting the engine easier by keeping the coolant warm.

A block heater is an engine heater mounted directly on the engine block, warming the engine from within. It heats the coolant in the engine, helping to maintain a warm engine and reducing wear during cold starts. Block heaters are commonly used in both cars and larger machines like tractors and are particularly effective in extreme cold.

An oil heater warms up the engine oil, making it circulate more easily during a cold start. When the oil is warm, it lubricates engine components better, reducing friction and wear. Oil heaters are especially useful for diesel engines, where motor oil can become very thick in cold temperatures.

A fuel tank heater warms the fuel tank to prevent fuel from solidifying or becoming difficult to handle in extremely cold temperatures. This is particularly important for diesel engines, where diesel fuel can start to gel in low temperatures. A tank heater ensures that the fuel remains liquid and can be efficiently pumped to the engine.