Here’s The Fastest Way To Defog Your Car Windshield According to Science

It’s that time of year when you get into your car and the windows are all fogged up.  The simple (and slow) way is to hit the defog button and just wait it out.  Unfortunately, that can take a little too long.

Thankfully, Mark Rober decided to figure out what is the fastest and most efficient way to get the windows cleared up.  His method is said to be twice as fast as using the traditional defroster.

In the video above, Rober explains his different tests and why his recommended method works so well.  The basic process is pretty simple.  Just do these four steps:

  1. Turn the heater on at full power
  2. Turn on the AC
  3. Turn off the inside air circulation (there’s typically a little button for this).
  4. Crack the windows open slightly

Be sure to watch the video as it’s helpful and answered some of my questions.