Thunderstorms and lightning are the most dramatic and destructive causes of power line problems. However, downed utility poles, birds or even large industrial motors switching on and off can create power surges. In the Lower Florida Keys, electrical problems and bad weather to the North of our service area also contribute to voltage fluctuations. Yes, today's computerized appliances and electronics can be damaged or destroyed by overvoltage surges. Large appliances like air conditioners or refrigerators are less susceptible, but can be damaged as well.
Surges can damage appliances like refrigerators, washers, dryers, fans, dishwashers and ovens.
Some manufacturers say to unplug their products every time lightning threatens. Yes, many electrical devices have electronic timers, clocks, or remote controls, which remain in operation even when it is not in use. Also, some appliances cycle off and on at random like air conditioners, water heaters, pumps or refrigerators, and they could be on during a surge. We recommend the use of surge protection devices. CES offers several different surge protection devices through its Power Sentry Program.