How long does a panel upgrade take?

Most residential 100A-to-200A heavy-ups are completed in a single day, with power off for roughly 4–8 hours.

Do I need a permit for a panel upgrade?

Yes - every jurisdiction in MD, DC, and VA requires a permit and final inspection for service-equipment work. We handle both.

How do I know if I have a Federal Pacific or Zinsco panel?

Federal Pacific Stab-Lok panels usually say 'FPE' or 'Stab-Lok' on the cover. Zinsco panels often have colored breaker handles (red, blue, green). Send us a photo and we'll confirm.

Are you licensed to do panel upgrades in Bethesda, MD?

Yes. Pirro Electric is fully licensed and insured to perform commercial and residential electrical work in Maryland, Virginia, and Washington, D.C., including Bethesda. We pull all required permits and coordinate inspections with the local jurisdiction on every job.

Do you handle aluminum wiring remediation in Bethesda?

Yes. Aluminum wiring remediation is one of our specialties for multi-unit buildings, condos, and single-family homes built in the late 1960s and 1970s throughout Bethesda and the broader DMV. We rewire to copper, replace outdated panels, and document everything for insurance carriers.

Bethesda, MD

Panel Upgrades in Bethesda, Maryland

200-amp upgrades, heavy-ups, sub-panels, and Federal Pacific & Zinsco replacements - done to code and inspected.

Request a Free Quote (240) 510-3131

Licensed & insured 5.0 ★ on Google Family-owned since 2003

DC Electrical Contractor #EM-40-0001168 · MD Master Electrician #7987 · VA Class A Contractor #2705198087 · EPA & OSHA Certified

Panel Upgrades & Heavy-Ups in Bethesda, MD - Pirro Electric

Looking for panel upgrades in Bethesda, MD? Pirro Electric is a family-owned electrical contractor 20+ years into serving the DMV, and Bethesda has been part of our route since we opened in 2003.

Our Bethesda portfolio spans 200-amp & 400-amp service upgrades in luxury homes - plus everyday panel work, outlet repair, and lighting across Glen Echo Heights, Westmoreland Hills, Edgemoor, and Battery Park. 200-amp upgrades, heavy-ups, sub-panels, and Federal Pacific & Zinsco replacements - done to code and inspected.

Local Angle

Common Panel Upgrades & Heavy-Ups Projects in Bethesda

Between jobs around Walter Reed (former) and the neighborhoods above, our Bethesda crew is on the road every week.

200-amp & 400-amp service upgrades in luxury homes

Neighborhoods servedGlen Echo Heights · Westmoreland Hills · Edgemoor · Battery Park

ZIP codes20814 · 20815 · 20816 · 20817

Scope of Work

What's Included

Every job in Bethesda 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

FAQ

Panel Upgrades & Heavy-Ups in Bethesda - Common Questions

Reviews

What Customers Say

Excerpts from verified Google reviews of Pirro Electric.

"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 Director

"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

Read all reviews on Google

Nearby Areas We Serve

Same panel upgrades & heavy-ups crew, next town over.

Panel Upgrades in Potomac, MD Panel Upgrades in Rockville, MD Panel Upgrades in Silver Spring, MD Panel Upgrades in Northwest, DC

Related Services in Bethesda

Often booked alongside panel upgrades & heavy-ups.

Ready to Get Started in Bethesda?

Free written quotes. Licensed & insured. Same-week scheduling for most projects.

Request a Quote (240) 510-3131