Main Panel Upgrades in Fresno — Is It Time to Power Up?
Your electrical service panel is the heart of your home's power distribution. If your Fresno home was built before 1995, it most likely operates on a 100-amp (or even an obsolete 60-amp) breaker panel. In 2026, modern Central Valley households demand significantly more power: central air conditioners running through 105°F summers, Level 2 EV chargers, induction ranges, home offices, and heat pumps.
Apex Air, Heating & Electric specializes in seamless main panel upgrades in Fresno, CA from 100A to 200A or 400A. We handle the entire end-to-end process: precision load calculations, City of Fresno or Fresno County permit applications, PG&E service coordination, clean one-day physical installation, and final city inspection sign-off.
Electrical Panel & Control Solutions
100A → 200A Panel Upgrades
Double your electrical capacity. Safely power new EV chargers, mini-splits, heat pumps, and modern appliances without tripping main breakers or dimming lights.
Hazardous Panel Replacement
Immediate replacement for dangerous Federal Pacific (FPE Stab-Lok) and Zinsco breaker boxes known to fail under overloads and cause house fires.
Electrical Subpanel Installation
Expand circuit space for ADUs, workshops, garages, swimming pools, spas, and outdoor kitchens with dedicated 60A–100A subpanels.
Meter-Main & Mast Replacement
Replace corroded utility meter bases, damaged overhead service masts, or weatherheads to meet current PG&E and municipal utility clearance standards.
Agricultural & Pump Control Panels
Custom control panel design, motor starters, irrigation pump panels, Variable Frequency Drives (VFDs), and automation controls for Valley farms and facilities.
Whole-Home Surge Protection
Industrial-grade Type 2 surge protectors installed directly inside your new panel to shield expensive AC inverters, smart TVs, and EV chargers from grid surges.
2026 Electrical Panel Upgrade Cost in Fresno, CA
Transparent pricing is core to how Apex operates. Most Fresno homeowners invest between $2,000 and $4,500 for a standard 100A-to-200A service upgrade. Here is how installed costs typically break down in the Central Valley:
| Service Type | Typical Installed Cost | Scope of Work & What's Included |
|---|---|---|
| Like-for-Like Panel Replacement | $1,500 – $3,000 | Replaces a failing or unsafe panel with a new 100A or 125A panel without upgrading main service conductors. |
| 100A to 200A Service Upgrade | $2,000 – $4,500 | Most popular upgrade: new 200A panel, 200A main breaker, AFCI/GFCI breakers, city permit, PG&E coordination, inspection. |
| Electrical Subpanel Installation | $650 – $1,500 | Adds 60A to 100A breaker capacity for ADUs, shops, additions, or pools without replacing the main panel. |
| Meter / Main Combo Replacement | $2,500 – $5,000 | Required when the meter socket is rusted, burned, or failing to seat the utility meter properly. |
| Heavy-Up Service Entrance (Mast / Riser) | +$1,000 – $3,000 | Upgrades overhead service mast, weatherhead, or underground lateral conduit to support 200A utility connection. |
| Commercial & Pump Control Panels | Custom Estimate | VFD integration, agricultural pump starters, 3-phase commercial distribution panels tailored to specific horsepower. |
*All quotes from Apex Air, Heating & Electric are comprehensive and include city permit fees, PG&E coordination, grounding rods, cold-water bonds, and a full 1-year workmanship warranty.
Do You Have a Federal Pacific or Zinsco Panel?
If your home was constructed between 1950 and 1990, inspect your electrical panel branding immediately. Millions of homes were equipped with panels manufactured by Federal Pacific Electric (FPE Stab-Lok) or Zinsco / GTE Sylvania.
Federal Pacific (FPE Stab-Lok)
In independent tests conducted by fire investigators and the CPSC, FPE breakers failed to trip in up to 60% of overcurrent conditions. When breakers fail to trip, wiring overheats inside your walls, leading to electrical fires. Most California insurance companies refuse to insure homes with FPE panels.
Zinsco & Sylvania Panels
Zinsco panels feature aluminum bus bars that corrode and melt. Breakers frequently weld themselves to the bus bar, making it impossible for the breaker to trip or be manually turned off. Buzzing sounds or scorching on Zinsco panels indicate imminent electrical failure.
Commercial & Agricultural Control Panels in the Central Valley
Fresno and the surrounding San Joaquin Valley represent the agricultural and food processing capital of California. Apex Air, Heating & Electric provides specialized electrical control panel services for agricultural irrigation, packing houses, cold storage facilities, and light industrial plants:
Agricultural Well Pump Panels
Deep well turbine and submersible irrigation pump panels, magnetic starters, lightning arrestors, and phase-loss protection modules.
Variable Frequency Drives (VFDs)
Precision motor speed controllers that slash electrical demand charges on large agricultural and industrial motors while smoothing startups.
Motor Control Centers (MCC)
Centralized distribution assemblies housing motor starters, disconnects, and programmable automation controllers for commercial facilities.
Automatic Transfer Switches (ATS)
Emergency generator integration ensuring agricultural pumps and commercial refrigeration stay powered during PG&E Public Safety Power Shutoffs (PSPS).