How long does a microwave last?
Typical
8 years
Range
7–10 years
A microwave typically lasts 7–10 years of normal use. The magnetron has a finite life measured in operating hours; door switches and turntable motors go first on heavily used machines.
What decides it
- Never running it empty (magnetron damage)
- Keeping the cavity and door seals clean
- Usage hours — a café microwave lives a third as long as a kitchen one
When to replace rather than repair
A failed magnetron outside warranty is a replacement — the part plus labour approaches a new unit.
Typical ranges from manufacturer guidance and industry surveys — individual machines vary with use and care. General information, not advice on a specific appliance.