Yes, once installed at your main electrical panel, whole-house surge protection covers every outlet, hardwired appliance, and electrical device in your home. This includes your HVAC system, water heater, garage door opener, security system, and all your plugged-in electronics. The system works by intercepting surges before they enter your home’s wiring. Unlike power strips that only protect what’s plugged into them, whole-house protection creates a barrier at the source. Everything electrical in your home benefits from this protection automatically, including appliances you can’t easily unplug during storms.