Do all breakers need to be AFCI?

What circuits don't need AFCI?

Not all breakers need to be AFCI. Arc-fault circuit interrupter (AFCI) rules cover 15- and 20-amp, 120-volt circuits in named rooms, not every breaker in the panel. Under the 2023 National Electrical Code (NEC), bathroom, garage and outdoor outlets are not on the list. Which rooms depends on the building code your city or county has adopted, says the International Association of Certified Home Inspectors (InterNACHI). Before your deadline, have a licensed electrician open the panel, list the circuits missing AFCI protection, and price the fix in writing.

Key takeaways

• Bedrooms came first. Later editions of the NEC added living areas in 2008, then kitchens and laundry rooms in 2014.
• InstaElectricians, a nationwide electrician service, puts a whole-home retrofit of 10 to 20 circuits at $1,000 to $4,000.
• Ask the electrician whether your panel takes AFCI breakers at all. If it doesn't, the job becomes a panel upgrade.

How much does it cost to add AFCI breakers?

The price turns on how many circuits need protection and whether your panel takes AFCI breakers.

Price the other findings before you write the request. Kept prices every line of an inspection report for $79, usually under 4 hours, and marks the ones that need a professional's quote.

Say your electrician finds ten circuits in covered rooms without protection. At InstaElectricians' $110 to $215 a circuit, that comes to $1,100 to $2,150 (10 x $110 and 10 x $215), before any permit fee or wiring fixes the bid lists. If your panel can't take AFCI breakers, add the $2,000 to $4,000 upgrade, for $3,100 to $6,150 ($1,100 + $2,000 and $2,150 + $4,000). InstaElectricians says some older panel brands, including Zinsco and Federal Pacific, "have limited AFCI breaker options."

An outlet can stand in for a breaker on some circuits. When wiring is extended or replaced, the 2023 NEC accepts an AFCI outlet at the first outlet of the existing circuit. InstaElectricians puts an installed AFCI outlet at $150 to $300. Ask the electrician whether that works for your circuits before you accept a panel bid.

Wiring problems can also raise the bill. Empire Electric says its estimate depends on "the complexity of your wiring and whether any circuit tracing is necessary." Ask for a written bid that lists the circuits, the breaker type, the permit and any wiring fixes. The same visit can check other panel lines on your report, such as an overfused breaker. The guide to getting repair estimates during the inspection period covers how to get a visit fast.

What does a missing AFCI finding mean?

An AFCI is a breaker or outlet that watches a circuit for arcing and cuts the power when it finds it. It "protects people from fires that could result from electrical arcing of wiring inside walls," as Mike Holt's code training site puts it. InterNACHI adds that these arcs "are undetectable by traditional (non-AFCI) circuit breakers."

InterNACHI's inspection standards have its inspectors test outlets that look AFCI-protected "using the AFCI test button, where possible." InterNACHI also tells inspectors to "refrain from quoting exact code in their reports." So your report may name rooms or circuits without naming a code edition.

If an outlet or the panel is sparking or smells of burning, stop using that circuit. Call 911 if there is smoke or fire, then a licensed electrician. For how this fits with other panel and wiring lines, see electrical findings on an inspection report.

Which rooms need AFCI protection?

The list grew with each edition of the NEC. McGarry and Madsen, a home inspection firm, traces it this way:

The 2023 edition lists all of those rooms, plus "similar areas." That rule covers 15- and 20-amp, 120-volt circuits in those rooms. Some places stay off the list. Under the 2023 NEC, AFCI protection "is not required for outlets in bathroom areas, garages, or outside."

Your city or county may not use the newest edition. Local codes "don't necessarily adopt the latest edition of the NEC immediately," McGarry and Madsen note. Your local building department can tell you which edition applies at your address.

Are AFCI breakers required in older homes?

The code ties older circuits to the rule when someone works on them. Under the 2023 NEC, if circuit wiring in a covered room "is extended, modified, or replaced," then "the wiring must be AFCI protected." So a kitchen remodel or new outlets in a bedroom can bring AFCI work with them.

For wiring nobody touches, the answer is local. InterNACHI notes that "Some jurisdictions do not yet require their implementation in locations where they can be helpful." The same building department call settles it for your address.

What do I ask the seller for?

Ask for the electrician's bid total, and attach the bid. A credit lets you pick the electrician and the breakers. If the seller does the work instead, ask for a licensed electrician, a permit where one is needed, and the invoice and permit sign-off before closing.

The buyer repair request letter template has the wording, and what to ask for after a home inspection covers the rest of your list. Your contract sets the exact deadline and terms, so confirm them with your agent.

What if the seller says no?

Expect the seller to say the panel met code when it was built. In an older home, circuits nobody has touched often had no retrofit requirement, because the 2023 NEC ties the rule to wiring that is extended, modified or replaced. So frame the ask as a fire-safety upgrade and attach the electrician's bid. A bid gives this finding a number and a scope, which makes it a line to negotiate. If the seller won't repair or credit it, the cost is yours after closing. If the bid turns into a panel upgrade, weigh it against your budget with when to walk away after a home inspection.

Should all breakers be AFCI?

Not automatically. InterNACHI warns an AFCI "might activate in situations that are not dangerous." That "can be particularly annoying when an AFCI stalls power to a freezer or refrigerator, allowing its contents to spoil." It lists wiring checks an electrician can run to cut down that nuisance tripping. One is making sure the wiring has no shared neutral connections. Ask your electrician which circuits beyond the code list are worth protecting.

How do I know what the rest of my list is worth?

If AFCI is one line of many, upload your inspection report to Kept and spend your remaining days on the electrician's visit.

Sources

• InterNACHI, Arc-Fault Circuit Interrupters (AFCIs)
• InterNACHI, Inspecting GFCI and AFCI Protection
• Mike Holt Enterprises, GFCI and AFCI, based on the 2023 NEC
• McGarry and Madsen, When did AFCI protection first become required for kitchens and laundry rooms?
• InstaElectricians, Cost to Install AFCI Breaker
• Empire Electric, AFCI Breaker Installation Cost