Maintenance Guides / Safety & Electrical

Replace whole-house surge protector

Difficulty: moderateTime: 30 minsEst. Cost: $80 - $250

Why it matters

UL-rated SPDs have finite joule capacity; expired SPDs offer zero protection.

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How to do it

  • 1

    Turn off the main breaker.

  • 2

    Remove the old SPD from the dedicated breaker slot.

  • 3

    Install the new SPD, aligning the breaker clip.

  • 4

    Verify LED status (should be green).

  • 5

    Restore power and test LED again.