The answer to 'how much does surge protection cost in Illinois' is that the cost of surge protection can vary widely depending on several factors. In general, you can expect to pay anywhere from $50 to $500 or more for a whole-home surge protector, with the average cost being around $150-$300.
The exact cost will depend on the size and type of your home, the electrical panel capacity, the brand and features of the surge protector, and whether professional installation is required. Homeowners in Illinois should get quotes from local electrical contractors to get an accurate estimate for their specific needs.