Safety & diagnosis — sizing guideline

Power Surge Risk Checker

Check off what applies to your home to see whether whole-home surge protection is likely worth it for you.

You have expensive electronics (TVs, computers, home theatre, smart home hub)

You have modern appliances with electronic control boards (fridge, washer, HVAC, induction stove)

You live somewhere with frequent thunderstorms or lightning

You've had power flickers, brownouts, or outages that damaged something before

You're on overhead utility lines (not underground)

You have solar, a generator, or an EV charger installed

0 of 6 factors

Check off what applies to see your recommendation.

Most surges come from inside the home — a large appliance motor (fridge, A/C) cycling on creates a brief internal spike.
Lightning strikes and utility grid switching cause less frequent but much larger surges.
A whole-home surge protector at the panel catches both, while point-of-use power bars only protect what's plugged into them.