Panel Upgrade
Modern panel upgrades, service replacements, EV-ready load calculations, and residential and commercial electrical infrastructure.
Safe, code-compliant upgrades for older homes, remodels, HVAC additions, EV chargers, backup power, and increased electrical demand across the Bay Area.
Services We Provide
Main Panel Replacement
We replace recalled and obsolete panels (FPE, Zinsco, Pushmatic) with modern, serviceable gear.
Service Upgrade (100A → 200A)
We coordinate full service upgrades with PG&E — meter-main, weatherhead, and mast work included.
Sub-Panel Installation
We install sub-panels for ADUs, garages, workshops, EV charging, and high-load appliances.
NEC 220 Load Calculation
We size service to the real load — not the default — so capacity matches future electrification plans.
Ready to schedule panel upgrade?
Talk to a specialist today. We respond the same business day with a clear scope and timeline.
Authorized SPAN Smart Panel Installer
Upgrade once, future-proof for everything: EV chargers, solar, battery backup, and per-circuit app control with a SPAN Smart Panel.
Not just new equipment — a system done correctly.
Main Panel Replacement
Federal Pacific, Zinsco, Pushmatic, and certain Challenger panels are documented fire hazards. Replacement is a safety upgrade, not just a capacity upgrade — and a known item on most home inspection reports.
Replacement scope includes service grounding, bonding, and main bonding-jumper work that aging panels almost universally lack. Inspectors flag these items consistently, and quietly fixing them during a panel upgrade is part of how we close out the permit cleanly.
Service Upgrade (100A → 200A)
We coordinate full 100A→200A and 225A service upgrades with PG&E, including meter-main, weatherhead, mast, and grounding work. Permits are pulled, inspections are scheduled, and the work is documented.
PG&E coordination, meter spotting, temporary disconnect scheduling, and permit closeout are handled by our project manager — not the homeowner. We have run enough of these to know how each utility yard processes the paperwork and how to keep the project on schedule.
Sub-Panel Installation
We install sub-panels for ADUs, garages, workshops, EV charging, and high-load appliances. Smart load management is deployed where capacity is tight so projects can proceed without a full service change.
Sub-panel installs are routed for minimum conductor length, code-required working clearance, and future serviceability. Where we deploy smart panels or load-management devices, the configuration is documented in the panel directory and on the homeowner's records.
NEC 220 Load Calculation
ABC Service performs NEC 220 load calculations against your real and planned loads — heat pumps, induction, EV charging, HPWH. A panel upgrade should be sized for what comes next, not just what plugs in today.
Our load calculations include planned EV charging, induction cooking, heat-pump conversion, and ADU loads — the work that determines whether a 200A service is genuinely adequate or just adequate today. The upgrade is sized so the homeowner isn't back in a panel discussion five years from now.
Thinking about panel upgrade?
Get a fixed-price proposal from a licensed specialist. Same-day response.
Why this is worth doing right.
Capacity for electrification
Heat pumps, induction, EV charging, and HPWH all need real capacity. A panel upgrade unlocks the rest.
Removes known fire risk
Older and recalled panels are documented fire hazards. Replacement is a safety upgrade, not just capacity.
Code compliance
Modern panels include the AFCI, GFCI, and bonding required by current code — not by 1985 code.
Resale value
An inspected 200A+ service is documented value at sale and removes a common inspection-report flag.
Manufacturers We Service
How a panel upgrade project runs.
- 01Evaluate
We assess existing equipment, loads, venting, electrical, and site constraints on-site.
- 02Design
We size and specify equipment to the building — with options and trade-offs explained plainly.
- 03Install
A dedicated lead tech handles a permitted, clean install with finish-grade workmanship.
- 04Commission
We start up, balance, and verify the system against design intent with calibrated instruments.
- 05Support
We walk you through operation, file rebates, and stand behind the system long-term.
Panel Upgrade: frequently asked
Trusted Across the Bay Area
Homeowners and businesses across the Bay Area trust ABC Service for hydronic heating, HVAC, boilers, heat pumps, and electrical work.
Extremely clean boiler installation and excellent communication throughout. They engineered the system properly instead of just swapping a unit on the wall.
Fast response and genuinely knowledgeable about radiant heating. Heat pump retrofit and panel upgrade done in one project — permits and rebates included.
Professional team, clean work, and honest diagnostics. Upsized our service for the EV charger — on time, on budget, and inspected the same week.
Tankless install with recirculation done right. Coordinated cleanly with our GC and walked us through every decision. Easily the most professional trade we worked with.
Radiant floors throughout a remodel. They designed the manifold layout properly and the comfort is incredible. Quietest system we've ever had.
Furnace replacement plus new ductwork. Quiet, efficient, and the crew treated our house better than we would have. Inspection passed first try.
Honest diagnostics and skilled HVAC technicians. They took the time to walk through the system and explain every recommendation.
Engineered for the Bay Area
From the Peninsula to the South Bay, San Francisco, and the Santa Cruz coast — we design, install, and service premium mechanical and electrical systems across six counties. Our team supports high-efficiency boilers, hydronic heating, HVAC, heat pumps, and electrical upgrades for modern Bay Area homes and light commercial properties.
- Santa Clara County
- San Mateo County
- San Francisco County
- Santa Cruz County
- Contra Costa County
- Alameda County
* Additional service areas available upon request.
