Power strip surge protectors only protect the devices plugged directly into them, while whole-house surge protection guards your entire electrical system at the main panel level. Power strips also wear out quickly – their protective components degrade with each surge they absorb.Whole-house systems protect everything in your home, including hardwired appliances like your HVAC system, water heater, and garage door opener that can’t be plugged into power strips. They also provide protection against surges that enter through your home’s wiring, not just through individual outlets. For comprehensive protection, many homeowners use whole-house surge protection as their primary defense, with power strips providing an additional layer for sensitive electronics.