How often should you test AFCI breakers?
Updated July 2026
Press the TEST button on every arc-fault (AFCI) breaker or receptacle once a month: it should trip instantly and cut power to the circuit. AFCIs exist to catch the erratic arcing in loose connections, nicked cables, and chewed cords, the low-grade sparking that ignites fires inside walls where no breaker or GFCI would react. The U.S. Consumer Product Safety Commission has tied arcing faults to more than 28,000 home fires a year. A breaker that will not trip on TEST is a silent loss of that protection, and a replacement is a $40–60 part.
What changes the interval
| Your situation | Interval | Why |
|---|---|---|
| AFCI breaker in the panel | Press TEST monthly | Should trip instantly to the middle or off position |
| Dual-function AFCI/GFCI breaker | TEST monthly | One button verifies both arc and ground-fault protection |
| AFCI receptacle (outlet type) | TEST and RESET monthly | Same routine as a GFCI outlet |
| After the power flickers back on | Re-test that week | Confirm it reset and still trips |
| Nuisance-trips on a vacuum or motor | Investigate, do not disable | Could be a real arc or a sensitive older unit |
| Will not trip on the TEST button | Replace the breaker | Protection is gone; a $40–60 part |
The cost of skipping it
What skipping it costs: an AFCI that no longer trips leaves you exposed to the one hazard it uniquely guards, the arcing inside walls and behind outlets that a standard breaker never sees. Given the CPSC's 28,000-fire figure, that is not a theoretical risk. The temptation to watch for is swapping a nuisance-tripping AFCI back to a plain breaker to make the annoyance stop; that trades a code-required fire protection for silence. A replacement AFCI is $40–60, a dual-function AFCI/GFCI $50–70. A wall fire is the alternative.
How to do it (2 min/month · $40–60 breaker to replace)
- Once a month, press the TEST button on each AFCI breaker; it should trip to the middle or off position.
- Push it fully to OFF, then back to ON to restore power to the circuit.
- For an AFCI receptacle, press TEST (power cuts) then RESET, just like a GFCI outlet.
- If it will not trip on TEST, replace the breaker, or call an electrician for the panel work.
- Do not confuse a real arc-fault trip with a nuisance trip; investigate anything that trips repeatedly.
- Never swap an AFCI for a standard breaker just to stop nuisance trips.
Knowing the interval is the easy half. OnOtto reminds you at the right interval, and it won't let you snooze it into next year. Tasks persist until they're done, and completing AFCI tests schedules the next one automatically.
Put this on autopilot, free for 30 daysFrequently asked questions
What is the difference between an AFCI and a GFCI?
They protect against different failures. A GFCI trips when current leaks to ground, the sign that electricity is running through a person or water instead of the wire, and it stops shocks. An AFCI reads the current's waveform for the erratic signature of arcing, the sparking of loose or damaged wiring that starts fires. So GFCIs are about shock in wet areas, AFCIs about fire in general circuits. A dual-function device does both jobs in one breaker or outlet. Learn more on what an AFCI is.
Why does my AFCI breaker keep tripping?
Sometimes it is doing its job, catching a genuine arc from a damaged cable, a loose backstab connection, or a failing appliance cord. Sometimes it is a wiring quirk: a shared neutral between two circuits, a long wire run, or the electrical noise from a vacuum or treadmill motor can trip sensitive older AFCIs. Unplug everything on the circuit and reset; if it holds, add loads back one at a time to find the culprit. If it trips bare, call an electrician, because that points to a fault in the wiring itself.
Are AFCIs even required in my house?
It depends on when your home was built or rewired. The National Electrical Code first required AFCIs on bedroom circuits in the early 2000s, then expanded them across most living-area circuits: bedrooms, living rooms, kitchens, laundry, and more. Older homes are generally not forced to retrofit, but any new circuit or major remodel triggers the current rules. If your panel has breakers with a TEST button and a pigtail wire, those are your AFCIs (or dual-function units), and they get the monthly test.
Can I replace an AFCI breaker myself?
Working inside a live panel is where DIY gets genuinely dangerous, because the main lugs stay energized even with the main breaker off. Swapping a breaker is straightforward for someone comfortable and trained around panels, but for most homeowners this is the job to hand an electrician, roughly $100–200 for the visit plus the $40–70 part. If you do it yourself, kill the main, verify dead with a meter, and match the breaker to your exact panel brand and bus.