Microwave: lifespan, maintenance and replacement

Typical lifespan: 7–12 years (about 9 years).

Maintenance schedule

• Clean interior with damp cloth — Weekly
• Clean or replace grease filter (over-range) — Every 3 months
• Inspect door seal — Every 6 months
• Check turntable operation — Monthly

Signs it needs replacing

• Food heats unevenly or slowly
• Sparking inside the cavity
• Door doesn't close or seal properly
• Keypad buttons not responding
• Burning smell during use
• Loud buzzing or humming noises

Tips

Over-the-range microwaves also serve as range hoods. Replace the grease filter regularly for proper ventilation.