// Compare · GFCI vs AFCI · NYC
GFCI vs AFCI
GFCI and AFCI sound similar and both can live in your outlets or breakers — but they protect against completely different dangers. Here's what each does and where your NYC home needs them.
GFCI
Protects people from shock — wet areas
AFCI
Protects the home from arc-fault fires
It's not either/or — most homes need both. GFCI stops shocks; AFCI stops fires.
A GFCI (Ground Fault Circuit Interrupter) protects people from electric shock by cutting power the instant current leaks to ground — essential in wet areas like kitchens, baths, garages, and outdoors. An AFCI (Arc Fault Circuit Interrupter) protects the home from fire by detecting the dangerous arcing of damaged or loose wiring — required on most living-area circuits. They solve different problems, and modern code requires each where its risk lives. Dual-function devices provide both at once.
GFCI vs AFCI: the full comparison
| Factor | GFCI | AFCI |
|---|---|---|
| Protects against | Electric shock to people | Arc-fault fires from damaged wiring |
| How it works | Detects current leaking to ground | Detects dangerous arcing signatures |
| Where code requires it | Kitchens, baths, garages, outdoors, wet areas | Bedrooms, living rooms, most living-area circuits |
| Where installed | Outlet or breaker | Outlet or breaker |
| Saves | Lives (shock prevention) | Property (fire prevention) |
| Typical NYC cost | $120–$220 per GFCI outlet; $220–$450 GFCI breaker | $220–$450 per AFCI breaker |
| Best in pre-war homes | Wet areas — almost always missing | High-value upgrade — aging wiring arcs more |
| Combined option | Dual-function AFCI/GFCI device covers both | Dual-function AFCI/GFCI device covers both |
How to choose
✅ Choose GFCI if…
- You're missing GFCI protection in kitchen, bath, or outdoors
- You have outlets near water without test/reset buttons
- You're updating a pre-war kitchen or bathroom
- You want shock protection where it legally belongs
✅ Choose AFCI if…
- You have an older home with aging branch wiring
- You're upgrading your panel and can add AFCI breakers
- You want fire protection on bedroom and living-area circuits
- You're modernizing to current code during a renovation
The NYC angle
In NYC's pre-war housing, two things are almost universally true: wet areas lack GFCI protection (the buildings predate the requirement), and aging branch wiring is exactly the kind that arcs — making AFCI breakers one of the highest-value safety upgrades per dollar.
We add GFCI protection during outlet work and AFCI breakers during breaker and panel upgrades — or both at once with dual-function devices. If you're modernizing a pre-war home, this protection is part of bringing it up to today's code. Either device installs in about an hour per location.
Make sure your home has the right protection.
We assess where your home is missing GFCI shock protection and AFCI fire protection, then add exactly what code and safety require — usually in a single visit.
GFCI vs AFCI: common questions
GFCI protects people from electric shock by detecting current leaking to ground — used in wet areas. AFCI protects the home from fire by detecting dangerous electrical arcing from damaged or loose wiring — used on living-area circuits. Different dangers, different jobs; most homes need both.
Most modern homes do — code requires GFCI in wet areas (kitchens, baths, garages, outdoors) and AFCI on most living-area circuits (bedrooms, living rooms). Dual-function AFCI/GFCI devices provide both protections in one unit where appropriate.
GFCI outlets run $120–$220 installed; GFCI and AFCI breakers run $220–$450 each. Dual-function devices that combine both fall in a similar range. Costs depend on whether your panel accepts modern breakers — we confirm compatibility first.
Often yes, if the panel accepts compatible modern AFCI breakers — brand and panel must match. Some older or recalled panels don't, in which case AFCI protection comes with a panel upgrade. We confirm compatibility before quoting.
AFCI breakers can trip on genuine arcing (good — it's protecting you) or on nuisance trips from certain motors or shared neutrals. We diagnose which it is: a real wiring fault gets repaired; a nuisance trip gets resolved by correcting the circuit, never by removing the protection.
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