Ask House Spouse · Safety & Prevention · GFCI & AFCI
What is an AFCI breaker and do I need one?
Short answer
An AFCI (arc-fault circuit interrupter) breaker detects the tiny electrical arcs that precede electrical fires — the kind that happen inside walls where you can't see them. Modern electrical code requires them on most living-space circuits. Homes built before ~2008 typically don't have them; retrofit is a licensed-electrician job worth doing.
AFCI vs GFCI
GFCI protects people from shock (bathrooms, kitchens, outdoor). AFCI protects the house from arc-fault fires (bedrooms, living rooms, hallways). They're different problems and both are required in modern construction.
When to retrofit
If you're already updating a panel, replacing breakers, or doing an electrical service upgrade — add AFCIs during that work. Standalone retrofit runs $50–$120 per breaker plus labor. Not required, but insurance discounts sometimes apply, and the fire prevention is real.
Nuisance trips
First-generation AFCIs tripped on things like vacuum cleaners. Current-generation ones are dramatically better. If you have an older AFCI that trips constantly, replacing with a new one usually solves it — don't just bypass it with a standard breaker.
What we see on Home Health Assessments
Based on real experience across Snohomish and King County, safety & prevention issues like this are among the ones homeowners most often miss until they become expensive. Our Home Health Assessment catches them early — while they're still a maintenance item, not a repair.
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We answer this question on real Home Health Assessments across Snohomish and King County.
Related questions
Electrical · Outlets & Switches
Why is only one outlet in my bathroom dead?
Nine times out of ten a bathroom outlet is dead because a GFCI upstream tripped — sometimes on a different floor. Find the nearest GFCI outlet (or a GFCI breaker in your panel), press RESET, and the bathroom outlets tied to it come back. If it trips again immediately, stop resetting — you have a ground fault to diagnose.
Safety & Prevention · Smoke & CO Detectors
How often should smoke and CO detectors be replaced?
Smoke detectors: replace the whole unit every 10 years (the sensor degrades regardless of battery). CO detectors: 5–7 years depending on brand — check the sticker on the back for the exact replace-by date. If either detector is over its date, replace it now, then set a calendar reminder for the next one.