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Is it OK to start the car with block heater plugged in?

Author of the blog (work in a car repair shop)
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Is it OK to start the car with block heater plugged in?

It won't hurt anything to start it while plugged in.

Can you leave an engine block heater plugged in overnight?

It is not necessary to keep an engine block heater plugged in overnight. Once the engine reaches a certain temperature, the extra heat will be lost to the cold air, and electricity is wasted. In regions with deep freezes, it’s best to turn the engine block heater on approximately 3-4 hours before you plan to drive the vehicle.

Should I unplug the heater before starting the truck?

This morning was -40 so I'm not about to go out and unplug my truck before I start it haha Leaving your heater plugged in when you start the truck won't hurt the engine. It could, however, hurt the block heater. The water around the heater is really warm, and when you start your pickup the water pump could push a bunch of ice cold water by it.

What is an engine block heater?

An engine block heater is an electrical device designed to warm a part of the engine and/or the motor oil when the vehicle is not in use. There are numerous types of engine block heaters that use various methods to provide the heat. What Does an Engine Block Heater Do?

Can a 1500 watt block heater overheat a truck?

You should not overheat your truck if you have it running with the block heater plugged in. The truck has a cooling system that can handle a 300 hp engine that may be 60% efficient. I am sure the cooling system can handle a 1500 watt heater.

Below you will find two interesting articles on a similar topic 👇

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Can I start my car while it's plugged in?

Tired of looking for a video for your question?

Video Answer below 👇

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