The answer to 'how much is surge protection upgrade' is that the cost can vary significantly depending on several factors. Generally, a basic whole-home surge protector installation can range from $200 to $500, while more advanced systems with additional features may cost $500 to $1,000 or more.
The specific cost will depend on the size and configuration of your home, the type of surge protection system needed, the complexity of the electrical work required, and the labor rates in your local area. Upgrading an existing system or installing a new one from scratch can also impact the final price. It's best to get quotes from licensed electricians in your local area to get an accurate estimate for your particular situation.