When it's cold out, it's important to turn on the heater in your car. While some cars have an automatic climate control system that will keep the temperature of your cabin comfortable, other models will require you to manually activate the heater controls. In general, this is done by turning on the ignition and then locating the heater controls on the dashboard. From there, you can toggle the heater button, spin a dial or digital display, or press the increase temperature button to start pumping out hot air.
Before you turn on the heater, you should make sure that all of your windows are closed and the sunroof is closed as well. This will help insulate the cabin so that the heating process is faster and more effective. Once the heat is turned on, it's a good idea to adjust the fan speed so that you can get the most out of it. However, remember that the higher the fan setting, the more air is moving, not necessarily a higher temperature.
Once the heater and fan are adjusted, you're ready to head out in your warm car! Just be sure to leave the engine running for a minute or two to give it time to warm up and begin pumping out heated air. If you turn on the heater without the engine running, you could be wasting valuable gas and also draining your battery. You can use the climate controls without starting the engine, but it's not as efficient and will take longer to warm up your cabin.