Does Car Heating Work with Engine Off?
The answer is: yes, but only for a limited time.
When you turn on your car’s heater, hot coolant from the engine is pumped through a heat exchanger (also known as a heater core) in the passenger compartment. The heat exchanger transfers heat to the air in the passenger compartment, which is then blown out through the vents.
If you turn off the engine, the coolant will continue to circulate through the heat exchanger for a short period of time. This is because the coolant is still hot and there is still some residual heat in the engine. However, as the coolant cools down, the heat output from the heater will gradually decrease.
How long the heater will work with the engine off depends on a number of factors, including the outside temperature, the size of the engine, and the size of the heat exchanger. In general, the heater will work for longer in colder weather and in cars with smaller engines and smaller heat exchangers.
If you need to use the heater for an extended period of time with the engine off, you can purchase a portable heater that plugs into the cigarette lighter. Portable heaters are available in a variety of sizes and price ranges, so you can find one that fits your needs and budget.
Safety precautions
Never use a portable heater in a car that is parked in an enclosed space, such as a garage. This is because portable heaters can produce carbon monoxide, which is a poisonous gas. Symptoms of carbon monoxide poisoning include headache, nausea, dizziness, and confusion. If you experience any of these symptoms, get fresh air immediately and seek medical attention.
Also, never leave a portable heater unattended in a car. Portable heaters can overheat and start a fire.
Conclusion
Yes, car heating works with the engine off, but only for a limited time. The heater will work for longer in colder weather and in cars with smaller engines and smaller heat exchangers. If you need to use the heater for an extended period of time with the engine off, you can purchase a portable heater that plugs into the cigarette lighter. However, be sure to follow the safety precautions listed above.
