But he can't say exactly how people should go about protecting their homes and electronics from lightning. The experts agree on the importance of protecting homes and electronics, but not on the best way to do it. Also there is currently no information about compatibility levels and points of vulnerability for many modern residential electronic appliances and systems. Consequently, specific installation methods and precise recommendations on how to protect these electronic systems from surge threats are not yet fully developed. But it won't help much if lightning hits your house.
Price is no guarantee of effectiveness for a surge protector.
It just means it won't kill you. With so many devices on the market and no national standard, Uman said, it's tough on consumers. There's no way for a non-expert to know. Protection is also needed for telephone and cable TV lines. Lightning rods and proper grounding are also important for such whole-house protection.