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Protecting Appliances and Extending Their Lifespan—Saving on “Hidden Repair Costs”

Voltage fluctuations are the “hidden killers” of electrical appliances. Normal household voltage should be 220V, but when the power grid load suddenly changes or large equipment nearby starts or stops, the voltage can spike or drop instantly. For example, in summer, if all the air conditioners in a building start simultaneously, the voltage may drop to 180V. The refrigerator compressor, due to insufficient power, will repeatedly try to start, leading to motor overheating and aging. Case Study: Ms. Li’s washing machine required repairs twice within three years. During the third malfunction, an engineer discovered that several components on the control board had burned out due to prolonged low-voltage operation. The engineer told her, “If it had been fitted with a voltage stabilizer, the probability of this type of failure would have been reduced by at least half.”