Do I need some form of surge protection for my home appliances? This is one of the questions that we tend to get consistently. Surge protection is one of those things that is better to have than not have. A whole surge protector guards all your home appliances against voltage spikes—limiting excess electrical current by blocking its flow or shorting it. Power surges occur when something disrupts the electrical flow and the voltage spikes. High-energy appliances and lighting are two common causes of power surges affecting your valuables. Installing a whole-house surge protector can prevent surges from affecting your home.