No. A crack can admit liquid to energized components and can spread under heat. Turn all elements off, disconnect power safely and arrange exact-model replacement. Look at the glass from the side with a flashlight to see whether the crack goes through the surface, and note where it runs.
What this covers
- Ranges & ovens · urgent damage
What it does not cover
Differential
Likely causes of “Can I use a glass cooktop with a crack?”, and how to tell them apart
- 1
An impact or dropped pan cracked the glass
What separates it A line or chip appears in the surface after a heavy pan, a dropped item or a sharp knock, and it may run to an edge.
How to confirm Look at the glass from the side with a flashlight to see whether the crack goes through the surface, and note where it runs.
- 2
Thermal shock from a sudden temperature change
What separates it A crack appears after cold liquid met a hot surface, or a hot pan was placed on a cold area, often starting near a burner.
How to confirm Recall what happened just before the crack and whether the surface was hot at the time.
- 3
Residue that only looks like a crack
What separates it A mark or scratch that wipes away with a cooktop cleaner and does not catch a fingernail, and shows no depth.
How to confirm Try a cleaner made for glass cooktops and a soft cloth without scraping hard; a mark that disappears was not a crack.
- 4
Melted sugar or plastic has fused and pitted the surface
What separates it A rough, crater-like patch appears after melted sugar, foil or plastic cooled on the glass.
How to confirm Follow the manual's method for fused residue; do not chip it with a hard tool because that can crack the glass.
Before you touch a setting
Record this first — changing settings destroys the evidence
- Where the crack is and whether it runs to an edge or under a burner.
- What happened just before, such as an impact, a boil-over or a hot pan on a cold surface.
- Whether any liquid has run into the crack or under the glass.
Try in this order
0 of 4 completedObserve before changing anything
ReversibleConfirm it is a true crack rather than removable residue without scraping aggressively.
Isolate the failing boundary
ReversibleKeep liquid and cookware off the surface and isolate power at the approved disconnect.
Apply the narrow correction
ReversibleUse manufacturer service and the exact replacement assembly; surface patch products are not a safe repair.
Verify the result and stop at the boundary
ReversibleDo not use any burner on a cracked glass cooking surface.
Stop boundary
When this stops being a self-service repair
- !Do not use any burner on a cracked glass surface. Turn all elements off, disconnect power at the breaker and arrange service.
- !Keep liquids away from the crack because they can reach live electrical parts.
Evidence ledger
Sources behind this answer
Exact questions
Common questions
Can a cracked glass cooktop be repaired?+
No. Surface patches and sealants are not a safe repair for heating glass. The glass is replaced as an assembly with the exact part for your model.
Does a chip in the corner matter?+
Yes. Chips and cracks concentrate stress and can spread when the glass heats and cools, so treat any crack as a reason to stop using that surface.
Is a small crack safe?+
No. Even a small crack can admit liquid to live parts and spread with heat.
What should I do first?+
Turn off all elements, disconnect power and avoid using it.
Is a crack covered by warranty?+
It may be if caused by a defect. Ask the manufacturer.