Can you use an oven if the glass is cracked?
Also, how much does it cost to replace the glass on an oven door?
Be sure you know the brand and model number when purchasing the replacement parts. Doors - $65 to $400 - Let a technician replace doors. Door Glass $50 to $300 - Have a professional replace the glass. Drip Pans - $10 to $40.
Keeping this in consideration, why did my oven door glass crack?
The difference in temperature around the glass causes it to shutter. Other causes can be accidental hitting of the glass, which causes it to shatter. Or it might cause a crack that develops and eventually breaks. Glass oven door shuttering is most common in the low range oven types.
Spontaneous glass breakage is a phenomenon by which toughened glass (or tempered) may spontaneously break without any apparent reason. The most common causes are: Binding of the glass in the frame, causing stresses to develop as the glass expands and contracts due to thermal changes or deflects due to wind.