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Block warmers are essentially engines that heat up the engine block and associated fluids before starting the vehicle. This may do a lot of helpful jobs depending on the external climatic state, such as how chilly the surroundings are. An engine block heater's primary use is to pre-heat the engine block, which reduces emissions, wear and tear on internal engine components caused by antifreeze, and improves the comfort of the interior of the car by allowing the heater to start blowing hot air sooner.