Panel Upgrades in Silver Spring, Maryland
200-amp upgrades, heavy-ups, sub-panels, and Federal Pacific & Zinsco replacements - done to code and inspected.
DC Electrical Contractor #EM-40-0001168 · MD Master Electrician #7987 · VA Class A Contractor #2705198087 · EPA & OSHA Certified

Homeowners and property managers across Silver Spring, Maryland rely on Pirro Electric for panel upgrades. Silver Spring is dense with mid-century single-family homes and 1960s-80s multi-unit apartment and condo buildings. Woodside and Forest Glen have early-1900s to 1940s houses with knob-and-tube remnants and two-prong ungrounded outlets still in daily use. Four Corners and Kemp Mill have a lot of 1950s-60s ramblers wired with aluminum branch circuits and running on original, undersized panels. The apartment and condo towers around Downtown Silver Spring and White Oak, many built in the 1960s through 1980s, have aging shared feeders and meter banks that need upgrading as units turn over, plus tenant fit-out work in the ground-floor retail. All of this runs through Montgomery County DPS for permitting, with Pepco as the utility.
From Downtown Silver Spring, Woodside, Four Corners, and Takoma Park (adjacent), our licensed electricians deliver the same permitted, code-compliant work that has kept us in business across the DMV since 2003. 200-amp upgrades, heavy-ups, sub-panels, and Federal Pacific & Zinsco replacements - done to code and inspected.
Common Panel Upgrades & Heavy-Ups Projects in Silver Spring
Between jobs around Downtown Silver Spring Plaza and the neighborhoods above, our Silver Spring crew is on the road every week.
- Panel upgrades
Neighborhoods servedDowntown Silver Spring · Woodside · Four Corners · Takoma Park (adjacent)
ZIP codes20901 · 20902 · 20903 · 20904 · 20905 · 20906 · 20910
What's Included
Every job in Silver Spring comes scoped, permitted, and inspected - no shortcuts.
- 100-amp to 200-amp service upgrades ("heavy-ups")
- Federal Pacific Stab-Lok panel replacement
- Zinsco panel replacement
- Main breaker panel and meter base swaps
- Sub-panel installation for additions and detached structures
- Whole-home surge protection at the panel
- Panel relabeling and circuit mapping
- AFCI and GFCI breaker upgrades
Panel Upgrades & Heavy-Ups in Silver Spring - Common Questions
What Customers Say
Excerpts from verified Google reviews of Pirro Electric.
"We use Pirro across our portfolio of 50+ commercial retail buildings. Excellent work, responsive, priced competitively, and they get it right the first time."
Timothy M.
Google Review · Commercial Property Manager"Pirro re-wired my whole townhouse, updated the panel, and replaced every outlet and switch. Professional, friendly, and on time. Couldn't ask for a better company."
JMW
Google Review · Verified Homeowner"If you're thinking of going with Pirro - do it. You won't be sorry. I run a medium-sized HOA and wouldn't use any other company for our electric."
Amanda S.
Google Review · HOA Board DirectorNearby Areas We Serve
Same panel upgrades & heavy-ups crew, next town over.
Related Services in Silver Spring
Often booked alongside panel upgrades & heavy-ups.
Ready to Get Started in Silver Spring?
Free written quotes. Licensed & insured. Same-week scheduling for most projects.