I’m so sorry, it must have been a terrible shock! I completely understand the panic – the sound of glass breaking is like an explosion in the kitchen. The good news is that you are not in danger and you don’t have to buy a new oven.
This phenomenon is called “spontaneous breakage” and unfortunately it sometimes happens even with modern ovens.
Why did this happen with such a new oven?
It’s not your fault and probably not the manufacturer’s fault either. The glass in the oven is tempered (stressed). Although it is designed for high temperatures, it has a specific property: internal stress.
Microscopic damage: Even a small, invisible scratch (e.g. from a sheet of metal or a wire brush) or a light impact on the edge of a pot can cause damage. The glass can withstand the impact, but the internal stress increases. Thermal shock during cooling: Paradoxically, glass often breaks only after the oven is turned off. The material shrinks as it cools. If hidden stresses or microcracks are present, the glass will eventually give way and break into a thousand pieces. Manufacturing defects: Sometimes a microscopic impurity (nickel sulfide) gets into the glass during manufacturing. This impurity expands over time until the glass cracks. How can this problem be solved cost-effectively?
If the rest of the oven is fine, you don’t need to buy a new one.
Glass replacement: The glass door can almost always be removed. You can order replacement glass directly for your model (according to the label on the side of the door or oven frame).
Repair or DIY: If you know someone with DIY skills, replacing the glass pane often only requires a few screws. This costs a fraction of the price of a new oven.
Warranty/Insurance: Even if your oven is 2-3 years old, check if you have an extended warranty or home insurance that covers glass breakage. Many people forget this!
How can you avoid glass breakage in the future?
After installing a new glass pane, please note the following:
No steel wool: Never use steel wool or aggressive abrasives on the inner pane. Even an invisible scratch can lead to a crack. Use only soft sponges and cleaning agents to remove grease.
Beware of impacts: Make sure the glass pane does not hit a metal sheet when closing.
Water Caution: Never spray hot glass with cold water (e.g. immediately after baking).
Don’t leave the door open to cool: Modern ovens have a fan. If you leave the door open, hot air will flow directly onto the top edge of the glass and hinges, causing uneven stress. Leave the oven closed until the fan automatically turns off.
Do you have the model number of your oven handy? I can try to find out how difficult it is to replace the glass on this model or where to get a replacement.