Whole-House Surge Protector
A device installed at the main panel that clamps voltage spikes from the grid or lightning before they reach household wiring.
Quick answer
Whole-House Surge Protector: A device installed at the main panel that clamps voltage spikes from the grid or lightning before they reach household wiring. Typical cost: $250–$600 installed..
Why it matters
Single events like nearby lightning or transformer failures destroy thousands in electronics; a $300 device prevents most of it.
Typical cost
$250–$600 installed.
Pros
- • Cheap insurance for whole-home electronics
- • Code-required on new panels (NEC 230.67)
Cons
- • Doesn't replace point-of-use surge strips for sensitive gear
Common uses
- • Any home with significant electronics or solar
Alternatives
Plug-in surge strips only (limited)
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Frequently asked questions
- Does insurance cover surge damage?
- Most policies have caps of $500–$2,500 for electronics — a surge protector pays for itself in one event.
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