Electrical Panel Upgrades in Orange County, CA

Your electrical panel is the heart of your home’s power — and the 100-amp panels installed in most Orange County homes between the 1960s and the 1980s were never designed for an EV charger, a heat pump, an induction range or an ADU. Smartchoice Air Conditioning, Heating & Electrical provides safe, code-compliant electrical panel upgrades across Orange County: 100-amp to 200-amp service upgrades, 400-amp service for larger homes, sub-panels, and replacement of recalled Federal Pacific and Zinsco panels. As licensed C-10 electricians (CSLB #1120145) we pull the permit, coordinate the shutoff and meter release with Southern California Edison, and pass the city inspection — start to finish, usually in one day.

Why Choose Smartchoice for Your Panel Upgrade?

• Licensed & permit-handled: C-10 electricians who file the permit, coordinate the meter shutoff with Southern California Edison, and pass inspection for you.
• Right-sized for your home: we calculate your real electrical load so your new panel — 200A for most homes, 400A where it’s warranted — fits your needs today and leaves room to grow.
• Safety & code first: every install meets current NEC and Orange County code — no shortcuts on the equipment that protects your home from electrical fire.
• Clean, guaranteed work: tidy, clearly labeled Siemens panels backed by a one-year labor warranty.
• Both trades under one roof: if the upgrade is for a heat pump or EV charger, the same company sizes the panel and installs the equipment — one crew, one permit, one schedule.

Our Electrical Panel Services

• 200-amp panel upgrades: replace a 100-amp panel or fuse box with a modern 200-amp service — the standard for an Orange County home today.
• 400-amp service: for large homes, homes with an ADU, or households running two EV chargers, a heat pump and a pool or spa together.
• Sub-panel installation: add capacity for a garage, workshop, ADU, or a dedicated EV-charger circuit without replacing the main panel.
• Federal Pacific, Zinsco and Sylvania replacement: swap out the recalled and insurance-flagged panels common in 1960s–80s tract homes.
• Panel repairs: failing breakers, double-tapped breakers, corroded bus bars, and meter-main problems.

200-Amp Panel Upgrade Cost in Orange County

Most 200-amp panel upgrades with Smartchoice cost $4,500 to $5,000. That price includes the new Siemens panel, grounding and bonding to current code, the permit and inspection, and clear labeling of every circuit, plus a one-year labor warranty. What moves the number: relocating the meter or main, a 400-amp service, adding a sub-panel, or a home where Southern California Edison requires the overhead riser or underground service conductors to be replaced — that utility-side work is quoted separately once SCE has looked at the service. We give you a flat written price after a free on-site assessment; there’s no charge to find out what you need.

SCE Charge Ready Home: A Panel Upgrade That Can Cost You Nothing

If the upgrade is for an EV charger, Southern California Edison’s Charge Ready Home program can pay for it. Smartchoice is a participating contractor. Income-qualified households — under 80% of area median income, or enrolled in a public-assistance program — can have up to 100% of eligible costs covered, capped at $4,200, which includes a 200-amp panel replacement, the dedicated 240-volt circuit and the charging outlet. Homes in designated disadvantaged communities qualify for 50%, capped at $2,100. How it works: you apply with SCE and receive a prequalification ID; we verify it, then handle the permit, the installation and all utility coordination. Ask us about it before you pay for a panel out of pocket — see our EV charger installation page for the full picture.

When a 200-Amp Upgrade Is Worth It

If you’re adding any one of these, almost certainly: a Level 2 EV charger (40–60 amps), a heat pump (30–60 amps), an induction range, an electric dryer or water heater, an ADU, or home battery storage. Most 100-amp panels in 1970s–80s homes in Yorba Linda, Anaheim Hills, Fullerton and Placentia are already near their limit with the original loads. A 200-amp service gives you headroom for the next twenty years, and it’s the first thing an inspector, insurer or buyer looks at. If you’re planning two EVs plus a heat pump plus an ADU, that’s when we talk about 400 amps.

The “80% Rule” for Electrical Panels

Electrical code treats anything that runs for three hours or more — an EV charger, a heat pump, a pool pump — as a continuous load, and a continuous load may only use 80% of its circuit’s rating. So a 48-amp EV charger needs a 60-amp breaker, and a panel’s total continuous loads can’t exceed 80% of its main breaker. This is why a 100-amp panel that “has open slots” still can’t take an EV charger: the slots aren’t the limit, the capacity is. Our load calculation applies this rule to your actual appliances before we recommend a panel size.

Old Panels and Home Insurance

Federal Pacific (Stab-Lok), Zinsco and some Sylvania panels have documented failure rates — breakers that don’t trip under fault — and they are common in Orange County homes built from the 1960s through the early 1980s. Many California insurers now decline new policies, or non-renew existing ones, on homes with these panels, and buyers’ inspectors flag them every time. If you have one, a panel replacement has stopped being an upgrade and become a requirement — and it’s the same one-day job as a 200-amp upgrade, at the same price.

What Happens on Install Day

We coordinate the shutoff with Southern California Edison in advance. On the day, power is off for roughly four to eight hours while the old panel comes out and the new one goes in, grounding and bonding are brought to code, and every circuit is labeled. You have power back the same day, as soon as the installation is complete. The city inspection and SCE’s formal meter release follow within a couple of days — we schedule both and meet the inspector, so there’s nothing for you to chase. One day on site for a standard 200-amp upgrade; longer only if the service entrance or meter is being relocated.

One note on tax credits: the federal 25C credit that covered panel upgrades (up to $600) ended for installations after December 31, 2025. For 2026, the real money is Charge Ready Home for EV-related upgrades, and our 0% financing on HVAC projects that include a panel upgrade.

Electrical Panel Upgrade FAQs