Can Heat Crack A: Windshield Patched

A $50 chip repair today can save you a $500 windshield replacement tomorrow. The Bottom Line

The biggest danger isn't just the heat itself, but . Imagine a car sitting in 100°F sun. You jump in and immediately blast the air conditioning on its coldest setting. The glass on the inside contracts rapidly while the outside remains expanded. This violent tug-of-war between the glass layers can cause a "stress crack" to form instantly. 3. Expansion of Existing Damage can heat crack a windshield

Back at the truck, she cranked the ignition and turned the air conditioning to max. Cold air blasted out of the vents, hitting the inside of the windshield like a winter gust. For a moment, nothing happened. Then— ping . A $50 chip repair today can save you

If you're concerned about heat-related windshield damage, look out for these signs: You jump in and immediately blast the air

The short answer is

You might think parking in the shade is the solution, but it can sometimes backfire.

Avoid the temptation to blast the A/C the second you get in the car.