Electrical Panel Replacement & Heavy-Ups
Licensed Master Electricians
Your home’s electrical panel is the backbone of everything that runs on power — your lights, appliances, HVAC, EV charger, and more. When it’s outdated, undersized, or failing, it’s not just an inconvenience. It’s a safety risk.
Need more power for an EV charger, heat pump, generator or addition? We also handle heavy-ups, the full electrical service upgrade that increases the amps coming into your home.
We Do the Work the Right Way
Ryan Electric performs electrical panel and service replacements throughout Frederick, Montgomery, Carroll, and Washington Counties — from straightforward breaker replacements to full 400-amp service upgrades with new meters, service disconnects, smart breakers, and surge protection. Every panel replacement option includes a complimentary Safety & Savings Plan membership and a multi-year parts and labor warranty. As a family-owned, local business with master electricians on every job, we do this work the right way: to code, with no surprises on the final bill.
What Is an Electrical Heavy-Up?
A heavy-up is an electrical service upgrade. It increases how much power your home can draw from the utility, most often from 100 or 150 amps up to 200 amps, or from 200 up to 400 amps.
A panel replacement swaps the panel but keeps the same amps. A heavy-up goes further, replacing the parts that bring power into the house so the home can safely run bigger loads.
Panel Replacement vs. Heavy-Up
| Panel replacement | Heavy-up (service upgrade) | |
|---|---|---|
| Amps | Stays the same | Increases (e.g., 100 to 200, or 200 to 400) |
| Main panel | New | New |
| Meter base and service entrance cable | Usually stays | Replaced |
| Utility coordination | Sometimes | Always |
| Permit and inspection | Yes | Yes |
When Do You Need a Heavy-Up?
- Adding a Level 2 EV charger
- Switching to a heat pump or other electric heating and cooling
- Installing a whole-house generator
- Building an addition, finishing a basement or adding a hot tub or pool
- Moving from gas to electric appliances
- Living in an older home that still has 100-amp service
Not sure? We check your current service and loads during the evaluation and tell you whether a heavy-up is needed or a panel replacement is enough.
What is the Cost?
How Much Does It Cost to Replace an Electrical Panel in Maryland?
Panel and service replacement at Ryan Electric ranges from $2,933 to $19,880 or more, depending on the scope of work involved. Every project is quoted at a flat rate before any work begins — no hourly billing, no surprise charges at the end of the job.
Most heavy-ups to 200-amp service fall between about $6,000 and $12,000. Upgrades to 400 amps, underground services and jobs that need the meter or mast relocated typically run $12,000 to $20,000 or more. Every heavy-up is quoted at a flat rate after an on-site evaluation.
The wide range reflects just how different these projects can be. Replacing the circuit breakers inside an existing single panel is a very different job from a full 400-amp service replacement involving a new meter, overhead or underground service, service disconnects, smart breakers, surge protection, and relocated equipment. Every Ryan Electric panel replacement option includes a complimentary Safety & Savings Plan membership (1-3 years depending on the option selected) and a parts and labor warranty of 2-10 years depending on the option selected.
What Drives the Price?
What Drives the Cost of Panel and Service Replacement?
No two homes are the same. Here’s what determines where your project falls in the price range:
Scope of the Replacement
At the lower end of the range, a panel replacement may involve only swapping out the existing circuit breakers in a single panel with new standard breakers — restoring safe, reliable operation without major structural changes. At the higher end, a full service replacement can involve removing and replacing the meter, service entrance equipment, service disconnects, all breakers (including arc-fault and smart breakers), and surge protection across a 400-amp service. These are two very different projects in terms of materials, labor, and time.
Panel Size and Amperage
The size of your electrical service — measured in amps — is one of the biggest cost drivers. A 100-amp service replacement is significantly less involved than a 200-amp or 400-amp upgrade. Larger homes and homes with high electrical demand (EV chargers, whole-house generators, electric HVAC, hot tubs) often require 200-amp or 400-amp service to safely handle the load.
Overhead vs. Underground Service
Electrical service enters your home either overhead (from utility lines through a service mast on the roof or exterior wall) or underground (through conduit buried beneath the ground). Underground services are generally more labor-intensive to access and replace. Overhead services have their own complexities, including the condition and position of the service mast.
Service Mast Replacement
When the overhead service mast — the conduit that carries the utility wires into your home — is damaged, corroded, or no longer meets current code, it must be replaced as part of the service upgrade. This adds material and labor costs and may require coordination with your utility company to temporarily disconnect power.
Code-Required Upgrades — Surge Protection and Service Disconnects
Current Maryland electrical code requires surge protection and service disconnects on panel and service replacements. These are not optional add-ons — they are mandatory safety requirements that protect your home and your family. Ryan Electric includes all code-required components in your quote so there are no surprises after the work begins.
Complete Grounding System
Every Ryan Electric panel and service replacement includes a complete new grounding system — new ground rods driven into the earth and proper bonding to the incoming water line as required by code. A solid grounding system is fundamental to electrical safety: it provides the path that allows overcurrent devices to trip during a fault, protecting your home and everyone in it. This is included in every option, not an add-on.
Arc-Fault Breakers — Required in Some Cases, Recommended in All
Arc-fault circuit interrupter (AFCI) breakers detect dangerous electrical arcs — caused by damaged wiring, loose connections, or faulty appliances — and shut the circuit down before a fire can ignite. Maryland electrical code requires AFCI breakers when a panel is relocated more than 6 feet from its current position. Even when not required by code, Ryan Electric strongly recommends arc-fault breakers on every panel replacement. The added layer of fire protection they provide is significant, and the cost difference is modest relative to the safety benefit.
Number of Panels
Some homes have more than one electrical panel — a main panel and one or more sub-panels. If multiple panels are being replaced or upgraded, materials and labor increase accordingly.
Meter Relocation
In some cases, the utility meter must be relocated to meet clearance requirements, access requirements, or because of structural changes to the home. Meter relocation requires coordination with the utility company and adds to the scope of the project.
Overhead Attachment Point Relocation
When the point where the utility’s overhead wires attach to the home needs to be moved — due to code requirements, structural issues, or renovation work — this adds both electrical work and coordination with the utility provider to the project.
Panel Relocation for Workspace Compliance
Electrical code requires a specific amount of clear working space in front of every electrical panel. When an existing panel is located in a closet, finished space, or area that doesn’t meet workspace requirements, the panel must be relocated. This can involve new conduit runs, drywall work, and coordination with other trades.
Panel Labeling
Every circuit in your panel should be clearly and accurately labeled. In larger homes with many circuits, complete and accurate panel labeling takes more time — and doing it right matters for both safety and future service work.
Request Service
Get Your Custom Quote
Unsure what price point your project falls into? Get in touch with us today to receive a custom quote from one of our licensed electricians.
What's Included
What Ryan Electric Includes in Every Panel and Service Replacement
- Full evaluation of your existing electrical service and panel(s)
- All required permits and coordination with the utility company
- Removal and disposal of old equipment
- Installation of new panel(s), breakers, and service equipment
- Code-required surge protection
- Code-required service disconnect installation
- Arc-fault breakers where required by code (and recommended for all replacements)
- Complete new grounding system — new ground rods and bonding to the incoming water line as required by code
- Accurate circuit labeling throughout
- Final inspection coordination
- System testing and commissioning
- Complimentary Safety & Savings Plan membership (1-3 years depending on option selected)
- Cleanup — we leave your home the way we found it
All work is performed by licensed master electricians who are background-checked and drug-tested. Every panel and service replacement is backed by a 2-10 year parts and labor warranty depending on the option selected — significantly beyond the industry standard.
Signs You May Need a Replacement
How Do You Know If Your Electrical Panel Needs to Be Replaced?
Many homeowners don’t think about their electrical panel until something goes wrong. Here are the signs that your panel may be due for replacement or upgrade:
- Breakers that trip frequently or won't reset
- Lights that flicker or dim when appliances run
- A panel that feels warm or hot to the touch
- Burning smell near the panel
- Breakers or fuses that are difficult to find or no longer available
- A Federal Pacific, Zinsco, or pushmatic panel (known safety concerns)
- A split bus panel (older design that lacks a single main breaker — a safety and code concern)
- An older home with a fuse box rather than a circuit breaker panel
- Planning to add a major load like an EV charger, generator, hot tub or large HVAC system (these often need a heavy-up)
- A home inspection flagged the panel as undersized or outdated
- You're purchasing a home and the panel is original or unknown age
If any of these apply to your home, a panel evaluation by a licensed electrician is the right first step. Ryan Electric offers a Whole-House Electrical Safety Evaluation that includes a thorough assessment of your panel and service equipment.
Panel Replacement and Heavy-Ups Throughout Maryland and Loudoun County, VA
Ryan Electric performs panel and service replacements throughout:
- Frederick County (Frederick, Urbana, Middletown, Walkersville, Brunswick, Thurmont, Emmitsburg, and more)
- Montgomery County (Rockville, Bethesda, Potomac, Germantown, Gaithersburg)
- Carroll County
- Washington County
- Howard County
- Loudoun County, VA (Leesburg, Ashburn, Purcellville, Sterling; licensed in VA)
Why Choose Ryan Electric?
Why Central Maryland Homeowners Trust Ryan Electric for Panel and Service Replacement
Panel and service replacement is high-stakes work. It involves your home’s main connection to the utility grid, mandatory permits, utility coordination, and safety requirements that protect your family and your home’s value. This is not the job for the lowest bid — it’s the job for the team that will do it right.
Master Electricians on Every Job
Ryan Electric’s family has been in the electrical trade since the 1970s. Ryan Electric itself has been serving Frederick County and surrounding areas since 2006. Panel and service replacement is core work for our team — not a specialty we bring in someone else to handle.
Code-Compliant, Permit-Ready Work
We pull all required permits, coordinate with your utility company, and schedule final inspections. When the job is done, your new panel meets current Maryland electrical code — and you have the documentation to prove it. This matters for home sales, insurance, and your family’s safety.
Licensed, Background-Checked, and Drug-Tested
Every technician who works in your home is fully licensed in Maryland and Virginia, background-checked, and drug-tested. You’ll know who’s coming before they arrive.
Flat-Rate Pricing — No Surprises
We quote panel and service replacement at a flat rate before any work begins. The number on your quote is the number on your invoice. No hourly overruns, no change orders for things we should have anticipated.
Local and Family-Owned
Ryan Electric is not a franchise. We’re a family business rooted in Frederick, Maryland, and we’ve built our reputation job by job over nearly two decades. When you call us, you’re talking to people who will still be here long after the job is done.
Leviton Panels — Exclusively
Ryan Electric installs Leviton panels exclusively. We’ve chosen Leviton because of their consistent quality, robust warranty support, and compatibility with the arc-fault and smart breaker technology today’s homes require.
Frequently Asked Questions: Panel & Service Replacement
What is a heavy-up?
A heavy-up is an electrical service upgrade that increases the amps coming into your home, such as 100 to 200 amps or 200 to 400 amps. It includes a new meter base, service entrance cable, main panel and grounding, plus coordination with your utility.
Will my EV charger require a heavy-up?
Not always. Many homes with 200-amp service can add a Level 2 charger without one. Homes with 100-amp service, or panels already near capacity, often need a heavy-up first. We check this as part of every EV charger quote.
How much does a heavy-up cost?
Most heavy-ups to 200-amp service fall between about $6,000 and $12,000. Upgrades to 400 amps, underground services and jobs that need the meter or mast relocated typically run $12,000 to $20,000 or more. Every heavy-up is quoted at a flat rate after an on-site evaluation.
How long does a heavy-up take?
The work itself usually takes one full day, with power off for most of it. Larger 400-amp or underground jobs can take two days. From signed quote to finished job, plan on about 2 to 6 weeks for the permit, your utility's disconnect and reconnect and the final inspection.
How long does an electrical panel replacement take?
A straightforward panel replacement — swapping breakers in an existing enclosure — can often be completed in a single day. A full service replacement involving the meter, service entrance, disconnects, and full panel is typically a full day or more, depending on complexity. Jobs requiring utility coordination (such as meter relocation or overhead attachment point changes) may require scheduling around your utility company's availability.
Will I be without power during the replacement?
Yes, your power will need to be off for the portion of the work involving the panel and service entrance. Ryan Electric plans and schedules the work to minimize the duration of the outage and will coordinate with your utility company when a utility disconnect is required.
Do I need a permit to replace my electrical panel in Maryland?
Yes. Panel and service replacements require an electrical permit in Maryland. Ryan Electric handles all permitting as part of every project. The permit process also triggers a final inspection by your local jurisdiction, which confirms the work meets current code — a valuable document for your records and for future home sales.
What is a service disconnect, and why is it required?
A service disconnect is a switch or breaker that allows power to be shut off to the entire home from a single location outside the panel. Current Maryland electrical code requires service disconnects on new panel and service installations. They provide an important safety feature for utility workers, firefighters, and homeowners.
What is arc-fault protection and do I need it?
Arc-fault circuit interrupter (AFCI) breakers detect dangerous electrical arcs — which can occur from damaged wiring, loose connections, or faulty appliances — and cut power before a fire can ignite. Maryland electrical code requires AFCI breakers when a panel is relocated more than 6 feet from its existing location. However, Ryan Electric strongly recommends arc-fault breakers on every panel replacement regardless of whether relocation is involved. The protection they provide against electrical fires is significant, and for most homeowners, the added peace of mind is well worth it.
What is whole-home surge protection and is it included?
A whole-home surge protector is installed at the panel and protects every circuit in your home from voltage spikes — from lightning, utility switching, or large appliances cycling on and off. Current code requires surge protection on panel replacements in Maryland. Ryan Electric includes all code-required components in your quote.
What brands of panels does Ryan Electric install?
Ryan Electric installs Leviton panels exclusively. We've standardized on Leviton for their quality, safety record, and compatibility with modern arc-fault and smart breaker technology.
My home has a Federal Pacific, Zinsco, or split bus panel — is that a problem?
Yes, in all three cases replacement is strongly recommended. Federal Pacific Stab-Lok and Zinsco panels have well-documented safety concerns, including breakers that may fail to trip during overloads — a leading cause of electrical fires. Split bus panels are an older panel design that lacks a single main breaker to shut off all power at once, which is both a safety limitation and increasingly a code concern. If your home has any of these panel types, Ryan Electric recommends replacement and can provide a flat-rate quote after evaluating your system.
What is a 400-amp service and does my home need it?
400-amp service is a heavy-up to twice the capacity of a standard 200-amp home, using either two 200-amp panels or one 400-amp panel. It's typical for large homes or homes with several big loads like EV chargers, pools, generators or electric HVAC.
What happens if my meter or overhead attachment point has to be moved?
Meter and overhead attachment point relocations require coordination with your utility company, who must disconnect and reconnect service at the utility side. Ryan Electric manages this coordination as part of the project. Relocation adds to the overall project scope and cost, but is sometimes required to meet code clearance requirements or to accommodate changes to the home's structure.
Does a panel replacement include a new grounding system?
Yes — every Ryan Electric panel and service replacement includes a complete new grounding system. That means new ground rods and proper bonding to the incoming water line as required by code. Grounding is one of the most important safety elements of any electrical system, providing the fault path that allows breakers to trip and protecting against shock and fire. Many older homes have inadequate or deteriorated grounding systems, so installing a new one as part of every panel replacement is something we include as a matter of course — not an optional upgrade.
How do I get a quote?
Call us at 301-463-4289 or request service online. We'll schedule an evaluation of your home's existing electrical service and panel, and provide a detailed flat-rate quote before any work begins.
Ready to Get Started?
If your home's electrical panel is outdated, undersized, or showing signs of trouble, don't wait. Ryan Electric provides flat-rate panel and service replacement with licensed master electricians, full permitting, and a team that treats your home like their own.
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