Electrical panel upgrade in Chelmsford, MA
24/7 availability • Licensed Master Electricians • No subcontractors
Most Chelmsford homes were built between 1940–1970 - older panels that can't handle today's electrical demands
Panel & Service upgrades (100A to 400A) - support modern appliances, heat pumps, home additions & more
Upfront pricing, no surprise bills | Trusted by 2,000+ MA & NH homeowners
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Trusted Since 1979
Locally-Owned
Is your panel keeping up?
The majority of Chelmsford's homes were built between 1940 and 1970 - a time when 60-amp and 100-amp panels were standard. Today's homes run heat pumps, EV chargers, home offices, and modern appliances that those panels were never designed to handle.
Here are the signs that it's time for an upgrade:
Adding an EV Charger or Generator
EV chargers and standby generators require dedicated circuits and significant amperage. Most Chelmsford homes built before 1980 need a service upgrade before these can be safely installed.
Burning Smell or Warm Panel
Heat or a burning smell near your electrical panel is a serious fire hazard — especially in older Chelmsford homes where wiring and breakers haven't been touched in decades. Call us immediately.
Federal Pacific or Zinsco Panel
These recalled panels are common in Chelmsford homes built in the 1960s and 70s. They're known fire hazards that fail to trip during overloads - most insurance companies now require replacement.
Lights Dim When Appliances Run
If your lights flicker when the AC, dishwasher, or dryer kicks on, your electrical service is undersized for the demands of your home. This is especially common in Chelmsford's older ranch and colonial-style homes.
Planning a Renovation or Addition
Chelmsford's strong homeowner market means a lot of kitchen and basement renovations. New living space means new circuits and most older panels don't have room to support them safely.
Breakers Keep Tripping
Frequent trips mean your panel is being pushed beyond its capacity. In a home built in the 1950s or 60s, that's not just an inconvenience — it's a sign your electrical system hasn't kept pace with modern demand.
Why Chelmsford homeowners
choose Sylvester Electric
On- time Guarantee
We respect your time. We arrive within the scheduled time window.
Upfront Pricing
We give you a firm price before we unscrew a single panel. No surprise hourly overages.
Family owned since '79
We aren't a franchise. We live in Dracut. We treat your home like it's our neighbor's—because it is.
Planning a Panel or Service Upgrade?
A real person will answer your call, no AI agent.
Current wait time: <2 minutes
What to expect from your panel or service upgrade
We believe in clear communication at every step. Here's exactly what happens when you hire Sylvester Electric for a panel or service upgrade in Chelmsford.
Step 1
Free In-Home Estimate
We visit your Chelmsford home, assess your current panel and power needs, and give you a clear upfront price. No obligation.
Step 2
Permit Filing
We handle the permit with the Town of Chelmsford's building department. You don't have to manage any paperwork.
Step 3
Power Company Coordination
We coordinate directly with your local power company to schedule the service disconnect and manage all scheduling on your behalf.
Step 4
Installation Day
Our licensed electricians complete the panel replacement efficiently — most jobs are done in a single day.
Step 5
Town Inspection
We schedule and pass the Chelmsford building inspection so your upgrade is fully code-compliant and documented.
Step 6
Final Walkthrough
We walk you through the new panel, label every circuit clearly, and answer any questions before we leave.
How much does a panel or service upgrade cost in Chelmsford?
Panel upgrade costs vary based on your current setup, the amperage you're upgrading to, and whether any additional wiring is needed. Here's what most Chelmsford homeowners pay:
Service upgrades — panel & meter
Replaces both the exterior meter base and interior panel. Required when upgrading your electrical service capacity.
Panel replacements — inside panel only
Replaces the interior breaker panel only. No meter or exterior work involved. Common when the panel is outdated but service capacity is sufficient.
Every home is different. Call us at (978) 957-3422 for a free in-home estimate — we'll give you an exact price before any work begins.
Call Us for your Electric Panel Upgrade in Chelmsford, MA
Honest work at fair prices. We handle everything from 60-year-old fuse boxes to full 400-amp service upgrades.
⚡ 200-Amp Upgrade
The most common upgrade. Replaces undersized 100-amp service with modern 200-amp capacity - handles today's appliances, EV chargers, and more.
⚠️ Federal Pacific & Zinsco Panel Replacement
Known fire hazards found in many older Chelmsford homes. We safely remove and replace these recalled panels.
🔋 400-Amp Upgrade
For larger Chelmsford homes with high electrical demand. Ideal if you're adding solar, multiple EV chargers, or a large addition.
🔌 Subpanel Installation
Need power in a detached garage, workshop, or addition? We install subpanels to get power exactly where you need it.
If you’re upgrading your panel, it may also be the perfect time to install a standby generator →
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Panel or Service Upgrade FAQ's
Do I need a permit for a panel upgrade in Chelmsford?
Yes, all panel upgrades in Chelmsford, MA require a permit and a town inspection. Sylvester Electric handles all permit filing and scheduling with the Town of Chelmsford's building department as part of every job. You don't have to manage any paperwork.
How long does a panel upgrade take?
Most residential panel upgrades in Chelmsford are completed in a single day. You'll be without power for a few hours while the old panel is removed and the new one is installed and tested. We coordinate with your utility company in advance so the process runs smoothly
What size panel does my Chelmsford home need?
Most Chelmsford homes built before 1980 are running on 100-amp or even 60-amp service — neither of which can safely support a modern home with EV chargers, heat pumps, and updated appliances. A 200-amp service upgrade is the most common solution and handles virtually everything a modern Chelmsford household needs. Larger homes with high electrical demand may benefit from a 400-amp service. We'll assess your specific setup during your free in-home estimate and recommend exactly what you need.
Is a Federal Pacific or Zinsco panel dangerous?
Yes, Federal Pacific (FPE) and Zinsco panels are known fire hazards and are very common in Chelmsford homes built in the 1960s and 70s. These panels can fail to trip during overloads, creating a serious fire risk. Many insurance companies in Massachusetts now require replacement before they'll renew a policy. Sylvester Electric safely removes and replaces these panels
Does Sylvester Electric offer emergency panel service in Chelmsford?
Yes, Sylvester Electric offers 24/7 emergency electrical service in Chelmsford, MA. If you're dealing with a burning smell, warm panel, or sudden power loss, call (978) 957-3422 any time. A real person will answer.
Schedule your free panel upgrade estimate in Chelmsford
Don't wait for a panel failure to force your hand. If your Chelmsford home is showing any of the warning signs above, or you're planning a project that needs more power, reach out to Sylvester Electric today.
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We’ve built our reputation through safe, honest electrical work — one home at a time.
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Other Electrical Services we Offer in Chelmsford
Level 2 home charger installation. We handle capacity checks, wiring, and permits.
🏠 Standby Generator Installation
Whole-home generator hookup with transfer switch. Be ready for the next outage.
Upgrade your electrical service from the meter to the panel.
🔧 Other Electrical Services
Troubleshooting, breaker replacement, outlets, wiring issues.
Master Electricians
Code Certified
Established 1979
Locally Owned