Unfortunately, all three women faced challenges when dealing with manufacturers afterward. Truesdale had to pay for a new door even though her oven was still under warranty. Cheryl’s oven was replaced by Bosch only after media intervention, while Wheat had to cover repair costs herself since her warranty had expired.
Mark Meshulam, a glass expert from Chicago Window Expert, identifies two main causes of spontaneous oven glass breakage. Many oven doors use soda-lime glass, which has limited tolerance for rapid heating and cooling cycles. In contrast, borosilicate glass, once commonly used in Pyrex and laboratory glassware, is much more heat-resistant. Another possible cause is nickel sulfide inclusions—tiny imperfections in the glass that can lead to breakage, especially during high-heat events like the self-cleaning cycle.
Meshulam emphasizes that self-cleaning features are generally safe. However, microscopic flaws can cause explosions long after the initial damage occurs, even when the oven is not in use. This delayed reaction makes such incidents particularly alarming.
Prevention Tips
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