Fairfax sits at the point where three eras of Northern Virginia housing meet. There are the 1950s and 1960s colonials and split-levels that filled in around the city as the county grew, the 1970s and 1980s subdivisions that followed, and newer construction squeezed in between. What they have in common is that the older two-thirds of that stock was wired long before anyone imagined a household running two EVs, a heat pump, an induction range, and a home office at the same time.
SparkWise Electric upgrades electrical panels across Fairfax and the surrounding county. We are licensed and insured Virginia electricians (VA Master #2710064102, VA Contractor #2705160838), we pull the permit and meet the inspector, and we treat a panel upgrade as the foundation for everything else the house needs to do — not as a standalone box swap.
Signs a Fairfax Home Needs a Panel Upgrade
- The panel brand is on the known-problem list. Federal Pacific Stab-Lok and Zinsco panels turn up regularly in Fairfax homes from the 1960s and 1970s. Both have documented histories of breakers failing to trip, and both get flagged in home inspections and by insurers.
- Anything warm, buzzing, or discolored. A panel that feels hot to the touch or shows scorching around the breakers needs a licensed electrician promptly — that is not a wait-and-see condition.
- Breakers trip when two large loads run together. Dryer plus microwave, AC plus space heater. That is capacity, not coincidence.
- The panel is full. No open slots, or already stacked with tandem breakers to squeeze in circuits it was not designed for.
- You are adding load. EV charger, heat pump conversion, finished basement, hot tub, induction range — each one is a reason to check whether the service can carry it before you buy the equipment.
- You just bought the house. Panel problems are one of the most common items to surface after closing, especially in homes that have changed hands a few times without the service ever being touched.
How a Panel Upgrade Actually Works
A typical 100A-to-200A upgrade runs one day for most Fairfax homes. We start with a load calculation — not a guess — to size the new service to how the house is actually used and what you plan to add. Then the utility coordinates a disconnect, we remove the old panel, install the new one, and rebuild the service entrance: meter base, mast or riser, grounding electrode system, and bonding all brought to current code.
Circuits get transferred and labeled properly — a labeled panel is worth more than people expect the first time something trips at 10 p.m. Power is off for several hours in the middle of the day while the swap happens, so plan around the HVAC and the refrigerator, but there is no need to leave the house.
Heavy-Up, Panel Swap, or Sub-Panel?
These get used interchangeably and they are not the same job:
- A heavy-up increases the service capacity itself — 100A to 200A, for example. It involves the utility, the meter, and the service entrance, and it is the right call when the house genuinely needs more power.
- A panel swap replaces the panel at the same amperage. This is what you need when the service size is fine but the equipment is obsolete, damaged, or a problem brand.
- A sub-panel adds circuit capacity fed from the existing main — often the cleanest answer for a finished basement, a garage, or a detached building when the main service still has headroom.
We tell you which one your house needs after looking at the actual panel and running the numbers. Quoting a heavy-up when a swap would do is a way to inflate a bill, and quoting a swap when the service is genuinely undersized just moves the problem down the road.
Permits and Inspections Around Fairfax
A panel upgrade is permitted, inspected work. Which office handles it depends on your exact address: most Fairfax-area homes fall under Fairfax County, while addresses inside the City of Fairfax city limits go through the city’s own permit process. The two are not interchangeable, and using the wrong one costs you time.
We confirm the correct Authority Having Jurisdiction for your address before we file, pull the permit under our contractor license, and meet the inspector so you do not have to take a day off for it. Utility coordination for the service disconnect is handled the same way.
Recent Panel Work in the Fairfax Area
A few representative jobs, described generally to protect customer privacy:
- Federal Pacific replacement after a purchase. A homeowner who had just bought a Fairfax house discovered a Federal Pacific panel from the original build. Full service upgrade, permitted and inspected.
- A panel that overheated. Referred to us for a full replacement after the existing panel was damaged by overheating — the kind of failure that starts as a warm spot nobody investigates.
- 200A upgrade with room to grow. A residential heavy-up to a 200-amp panel with a 40-space enclosure, giving the homeowner capacity for future circuits instead of a panel that would be full again in two years.
- Service entrance corrected. Removal of an abandoned second meter base and a proper rebuild of the service drop and entrance — a common find on houses that were divided or altered decades ago.
Fairfax Panel Upgrade FAQ
What does a panel upgrade cost in Fairfax?
It depends on the service size, the condition of the service entrance, whether the meter and mast need rebuilding, and how much the panel has to move. A straight swap at the same location is the low end; a heavy-up that involves relocating the panel and rebuilding the entrance is considerably more. We quote after seeing the panel — a number given over the phone is a number that changes later.
Do I really need to replace a Federal Pacific panel if it is working?
“Working” is the difficult word. The documented concern with Stab-Lok breakers is that they may fail to trip under fault conditions — which is not something you notice until the moment you need it. Many insurers and home inspectors treat these panels as a defect regardless of apparent condition. We will give you a straight assessment of what is in your house rather than a scare.
Will 200 amps handle an EV charger?
In nearly all cases, yes — a 200-amp service comfortably supports a Level 2 EV charger alongside normal household loads. If you are planning both, doing them together means one permit and one visit instead of two.
Should I add surge protection while the panel is open?
It is the cheapest moment to do it. A whole-house surge protector mounts at the panel and protects everything downstream. Adding it later means a second service call for a device that takes minutes to install during the upgrade.
How long is the power off?
Typically several hours during the working day while the old panel comes out and the new service goes in. We schedule the utility disconnect and the inspection to keep that window as short as the work allows.
Get a Panel Upgrade Quote in Fairfax
SparkWise Electric serves Fairfax and the surrounding county. For everything else we do locally, see our Fairfax electrician page. Call (703) 915-5351 or book online for a free panel upgrade estimate. Licensed & insured — VA Master #2710064102, VA Contractor #2705160838. Permit and inspection requirements vary by jurisdiction; your local Authority Having Jurisdiction has final say.
Panel Upgrades in Nearby Areas
We handle panel upgrades and replacements across Northern Virginia. If you are outside Fairfax, these are the areas closest to you: Vienna · Reston · Arlington · Alexandria · Ashburn · Gainesville.