Air fryers have taken over modern kitchens, and Ninja’s latest portable glass air fryer—the Ninja Crispi—was designed to be a game-changer. By replacing traditional non-stick metal baskets with clear, heat-resistant glass containers, it promised toxic-free, easy-to-clean cooking where you can watch your food crisp up in real time.
However, a viral video posted by TikTok user Kelsey (@kwkelsey) has sparked a major conversation around the safety and durability of glass air fryers after her unit shattered during its second use.
What Happened in the Viral Video?
In her video, Kelsey demonstrated the aftermath of cooking with her new Ninja Crispi. On only her second attempt using the device, the glass container suffered a massive structural failure, cracking and shattering across her kitchen counter.
The video quickly racked up millions of views, with thousands of home cooks dropping into the comments to voice concerns about glass cookware in high-heat appliances.
Why Do Glass Air Fryers Crack?
While tempered glass and borosilicate glass are designed to withstand high temperatures, glass remains susceptible to a phenomenon known as thermal shock. Thermal shock occurs when different parts of a glass vessel expand or contract at drastically different rates due to rapid temperature changes.
Common triggers for glass failure in appliances include:
- Extreme Temperature Swings: Placing a cold or frozen glass bowl straight into a hot heating unit, or running cold water over a hot glass container right after cooking.
- Micro-Fractures: Hairline cracks caused during transit, shipping, or minor bumps that compromise the structural integrity before heating even begins.
- Uneven Moisture Exposure: Placing a hot glass container onto a wet surface, granite countertop, or damp towel.
Safety Tips for Glass Air Fryer Owners
If you own or are considering a glass air fryer like the Ninja Crispi, keep these essential safety practices in mind:
- Avoid Rapid Temperature Shifts: Never place frozen-solid glass containers into a hot unit, and allow hot glass to cool completely at room temperature before washing it.
- Rest on Protected Surfaces: Always set hot glass containers on a heat-resistant trivet, wooden block, or silicone mat—never directly onto cold granite or metal counters.
- Inspect Before Cooking: Check your glass vessel for minor chips, deep scratches, or hairline fractures before turning on high heat.
- Follow Manufacturer Limits: Stick strictly to recommended preheat times and temperature ceilings outlined in the user manual.
Have you experienced any issues with glass air fryers, or do you prefer traditional metal baskets? Share your thoughts and experiences in the comments below!
