Defogger

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Defogger" – news · newspapers · books · scholar · JSTOR (October 2021) (Learn how and when to remove this message)

A front windshield defroster (left) and A rear window defroster (right) symbol.

A defogger, demister, or defroster is a system to clear condensation and thaw frost from the windshield, backglass, or side windows of a motor vehicle. The rear window defroster was invented by German automobile engineer Heinz Kunert.^[1]