7 Signs Your NYC Home Needs a Panel Upgrade (100A to 200A)

Your electrical panel is the heart of your home's power system, and in much of New York City's housing stock it hasn't kept up with the way we actually live. A panel sized for the 1970s wasn't built for central air, an induction range, a heat pump, and an EV charger all drawing at once. Plenty of NYC homes still run 100-amp service, and a fair number of older brownstones and pre-war 1-3 family houses are still on fuse boxes. Here are the signs it's time to consider a 100A-to-200A upgrade, and what that involves in NYC.

1. Breakers that trip again and again

An occasional trip is the breaker doing its job. A breaker that trips every time you run the microwave and the toaster together, or that won't stay reset, is telling you the circuit (or the whole panel) is overloaded. If multiple breakers trip across different rooms, the panel itself is likely undersized for your current load, not just one circuit.

2. Flickering or dimming lights

Lights that dim or flicker when a big appliance kicks on — the AC compressor, a vacuum, the dishwasher — usually mean the panel is straining to deliver enough power on demand. A brief dip when central air starts can be normal, but persistent flickering tied to appliance use points to a capacity or connection problem worth a professional look.

3. You still have a fuse box

If you're replacing screw-in fuses or pulling fuse blocks, your service is decades old. Older fuse panels often top out around 60 amps, can't be expanded for modern circuits, and are a frequent flag for insurers. Many NYC homeowners discover this only when an appliance, an addition, or a home sale forces the question.

4. No capacity for AC, an EV charger, or a heat pump

This is one of the most common reasons NYC homeowners call us today. A Level 2 EV charger commonly draws around 40 amps (on a 50-amp circuit), and central AC or a heat pump can pull 30-50 amps. Stack those on a 100-amp service that's already running a kitchen, laundry, and lighting, and there's often no headroom left.

Before adding load, a licensed electrician runs a load calculation under the National Electrical Code — NEC 220.82 for the whole-house optional method, or 220.83 for adding loads to an existing dwelling — to confirm whether your service can carry it. A 200-amp panel often can; a 100-amp panel frequently can't once you add a charger plus electric heat.

This matters more than ever with New York's push toward electrification. NYSERDA's EmPower+ program can help income-eligible owners cover heat pumps and even electrical service and wiring upgrades, but the appliances still need a panel with room to feed them. If you're planning an EV charger installation, the panel check comes first.

5. A scorched, warm, or buzzing panel

These are the signs to take seriously right away:

• Scorch marks, melted spots, or a burning smell at the panel or an outlet
• A panel cover that's warm to the touch
• Buzzing, crackling, or sizzling sounds from inside
• Breakers that feel hot

Any of these can indicate arcing or overheating connections — a genuine fire risk. Don't poke around inside the panel yourself; call a licensed electrician promptly.

6. You're renovating or adding space

Finishing a basement, building a rear extension on a brownstone, adding a rental unit, or gutting a kitchen all add circuits and load. NYC's permit process makes a panel upgrade a natural part of that work, and it's far cheaper to size the service correctly during a renovation than to come back later.

7. Reliance on power strips and extension cords

If outlets are scarce and you're running daisy-chained power strips throughout the home, the underlying issue is usually too few circuits feeding off an undersized panel. Adding circuits safely starts at the panel.

What a NYC panel upgrade actually involves

A 100A-to-200A upgrade in NYC isn't a same-day swap. By law, the work must be filed by a NYC-licensed electrician through DOB NOW: Build (the ED16A electrical filing) and pass a DOB electrical inspection — electricians can't self-certify completion — before the job is signed off in DOB NOW: Inspections. The electrician also coordinates with Con Edison for the service connection and meter, and for 1-2 family homes the NEC now requires an exterior emergency disconnect (NEC 230.85). Done right, it's a clean, code-compliant job; done wrong or unpermitted, it creates safety and resale headaches down the road.

If your panel is showing any of these signs, get it evaluated before it forces the issue. Chazon Electric is licensed and insured across all five boroughs and handles panel upgrades end to end — from the load calculation to DOB sign-off and Con Edison coordination. Call (718) 924-8062 to schedule an assessment.