“Our house by the river was always muggy. They added a dehumidifier and sealed the ducts, came up from Seguin same week, and the price matched the quote exactly. Comfortable for the first time.”
If your San Marcos home still has a Federal Pacific or Zinsco panel, your insurer probably already knows. We replace them, size the upgrade to your real load, and pull the permit.
Thanks for reaching out. We've got your request and we'll be in touch shortly, usually the same day. Need us right now? Call (830) 587-5790 — we're open 24/7.
Permitted + inspected
Federal Pacific and Zinsco panels — common in San Marcos homes built from the 1950s through the 1980s — have a documented failure-to-trip problem, and carriers increasingly refuse to cover them.
We replace the panel, size the new service to your actual load including AC and any EV charger, and handle the permit and inspection.
Call (830) 587-5790A panel upgrade is not glamorous, but it is the spine of a safe, modern home. Here is when San Marcos homes need one.
These panels can fail to trip under a fault — a real fire risk and a reason insurers balk. If you have one, replacing it is one of the highest-value safety upgrades in the house. We document it with a permit so it is on record for resale.
A lot of older San Marcos homes run a service that was fine for 1970 and is overwhelmed by central AC, a modern kitchen, and a charger. We size a 200-amp service to what your home actually draws now.
Being licensed for HVAC and electrical, we size the panel to carry the AC properly — the part panel-only electricians often get wrong. The breaker box and the condenser are the same job to us.
Every panel upgrade gets the local permit and inspection, wired to NEC 2023. It protects you, it is required, and it is the difference between a real upgrade and a liability hidden behind a cover.
The older neighborhoods around Belvin Street and downtown have homes that predate central air entirely. That means undersized panels, two-prong outlets, ungrounded circuits, and sometimes knob-and-tube still in service. We modernize it safely and pull the City of San Marcos permit so it is documented for resale.
| Service | Notes | Price |
|---|---|---|
| FPE / Zinsco panel evaluation | Safety report + replacement quote | $100–$150 |
| Whole-home surge protector | Type 2, panel-mounted, tested | $250–$450 |
| 200-amp panel upgrade | Written quote after load assessment | Quoted on site |
All prices flat-rate, all-in, written and approved before work starts. No travel surcharge for San Marcos.



From the rental streets around Texas State to the historic Square and the new builds toward the Blanco River, we cover San Marcos along the IH-35 corridor. A few of the areas:
“Our house by the river was always muggy. They added a dehumidifier and sealed the ducts, came up from Seguin same week, and the price matched the quote exactly. Comfortable for the first time.”
“Bought a 1920s home near the Square and the wiring was a patchwork. Moorhead brought it up to code, kept all the original charm, and pulled the permit. They clearly respect old houses.”
“Our house by the river was always muggy. They added a dehumidifier and sealed the ducts, came up from Seguin same week, and the price matched the quote exactly. Comfortable for the first time.”
Tell us what the system's doing and we'll get right back to you — usually same day, anywhere in San Marcos. Prefer to talk? Call (830) 587-5790, day or night.
Thanks for reaching out. We've got your request and we'll be in touch shortly, usually the same day. Need us right now? Call (830) 587-5790 — we're open 24/7.
FPE/Zinsco replacement and 200-amp upgrades, permitted.