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Surge Protection
Premium Electrical Service

Surge Protection in Northern Virginia | Expert Installation

Whole-home protection against damaging power spikes.

40+ Years
Licensed & Insured
5-Year Warranty
Same-Day Service
Upfront Pricing
1,200+ Reviews

Why is this important?

AJ Long Team Working

Modern homes contain tens of thousands of dollars in sensitive electronics, from smart appliances and HVAC systems to home theaters and computer networks. A single lightning strike or utility grid surge can destroy this equipment in milliseconds. Our whole-home surge protection installations use commercial-grade surge protective devices (SPDs) installed directly at your main electrical panel to intercept damaging voltage spikes before they reach any device in your home. We implement a layered protection strategy using both Type 1 SPDs (installed before the main breaker for external surge events) and Type 2 SPDs (installed after the main breaker for internal and utility surges) to provide comprehensive coverage. Every installation begins with a thorough grounding system verification, because surge protection is only as effective as your home's grounding. We also protect secondary entry points including cable, telephone, and data lines where surges can bypass panel-mounted protection. Our installed units feature joule ratings of 50,000 or higher and include connected equipment warranties up to $100,000 from the manufacturer, giving you financial protection alongside electrical protection. With the NEC 2020 now requiring surge protection in all new dwelling units, upgrading your existing home puts you ahead of code and protects your investment.

Total Protection

Covers every outlet and appliance in the house.

Cost Savings

Cheaper than replacing fried appliances.

Warranty

Many units come with connected equipment warranties.

Layered Defense

Type 1 and Type 2 SPDs work together to stop surges from both external events and internal appliance cycling.

Equipment Warranty

Manufacturer connected equipment warranties up to $100,000 provide financial protection if a surge damages your electronics.

Code Compliance

The NEC 2020 requires surge protection for new dwelling units -- installing now brings your home up to the latest standard.

Signs You Need This

You have expensive computers or home theater equipment
You live in an area with lightning storms
You've lost appliances to power surges before
Your home has sensitive smart home devices or a home automation system
You have a high-efficiency HVAC system with electronic control boards
Your area experiences frequent power flickers or utility switching events
You work from home and cannot afford equipment downtime

Need Help Now?

Our licensed electricians are ready to assist you in Northern Virginia.

Service Areas

Serving Fairfax, Arlington, Alexandria, Loudoun, and Prince William Counties.

Local Expertise

Northern Virginia Service Context

Serving the DMV Region

Fairfax, Arlington, Alexandria, Loudoun & Prince William Counties

Northern Virginia's combination of severe thunderstorm activity, aging utility infrastructure, and high-value home electronics makes whole-home surge protection especially important in the DC metro area. Fairfax County, Loudoun County, and Prince William County experience an average of 30-40 thunderstorm days per year, each carrying the potential for damaging voltage spikes. The rapid residential development in Loudoun and Prince William counties puts additional strain on the power grid, causing utility switching events that generate internal surges. Meanwhile, the high concentration of technology professionals in areas like Reston, Herndon, and Ashburn means Northern Virginia homes contain significantly more sensitive electronics than the national average -- home offices with multiple monitors, networking equipment, smart home systems, and EV charging stations all vulnerable to surge damage. Dominion Energy's grid modernization efforts are ongoing, but older substations serving established neighborhoods in McLean, Vienna, Arlington, and Falls Church still produce power quality fluctuations that accelerate electronic wear. Installing whole-home surge protection is one of the most cost-effective investments a Northern Virginia homeowner can make, protecting equipment worth tens of thousands of dollars with a device that costs a fraction of a single appliance replacement.

Licensed in Virginia
Master Electrician
Same-Day Available
Local Since 1985
Real Projects

Surge Protection Case Studies

See how we have helped homeowners across Northern Virginia with their surge protection needs.

Lightning Season Protection for Smart Home in McLean

colonial
McLean, VA, Fairfax County

Challenge

A McLean homeowner with over $80,000 in smart home equipment, including a Savant whole-home automation system, Lutron lighting, and a Sonos distributed audio setup, had already lost a $2,500 HVAC control board to a nearby lightning strike. The home had no surge protection beyond a few power strip protectors at the desk.

Solution

We installed a layered surge protection system with an Eaton Type 1 SPD at the meter base and a Siemens Type 2 SPD inside the main 400-amp panel. We also added dedicated point-of-use protection for the home theater rack and network closet, and installed surge-protected receptacles at the two subpanels serving the pool house and detached garage.

Result

The system has intercepted over a dozen recorded surge events in two storm seasons. Zero equipment losses since installation, and the homeowner's insurance provider reduced their premium by 8%.

Whole-Home Surge Protection for Ashburn Townhome Community

townhome
Ashburn, VA, Loudoun County

Challenge

A townhome owner in the Broadlands community experienced repeated damage to garage door openers and smart thermostats. Utility switching events on the rapidly developing Loudoun County grid were causing frequent low-level surges that degraded electronics over time. The shared utility infrastructure made the home especially vulnerable.

Solution

We installed a Square D Type 2 SPD rated at 80,000 joules at the 200-amp main panel and added secondary surge protection on the cable and Ethernet entry points. We also verified the grounding electrode system and added a supplemental ground rod to improve the surge dissipation path.

Result

No further appliance failures in 18 months of operation. The homeowner estimates saving over $1,200 in avoided replacement costs for garage door openers and smart devices.

Multi-Panel Surge Protection for Manassas Split-Level

split-level
Manassas, VA, Prince William County

Challenge

A 1970s split-level home with a main panel and two subpanels had experienced a power surge during a summer thunderstorm that destroyed a refrigerator, washer control board, and home office computer. The home's grounding system was original and had not been inspected in decades, limiting any surge protection effectiveness.

Solution

We first upgraded the grounding electrode system with two new 8-foot ground rods bonded with #4 copper. Then we installed Type 2 SPDs at all three panels, each sized appropriately for the panel's capacity. We also added whole-house protection on the phone and cable entry points where surges can bypass panel protection.

Result

The grounding resistance dropped from 47 ohms to under 10 ohms, and the three-panel protection system provides comprehensive coverage. The homeowner registered connected equipment warranties totaling $200,000.

Estate-Grade Surge Protection System in Great Falls

estate
Great Falls, VA, Arlington County

Challenge

A 9,000 square foot Great Falls estate with a main panel, four subpanels, a pool equipment panel, and a detached guest house had no surge protection despite housing over $150,000 in electronics, a commercial-grade kitchen, and a whole-home generator. The property's hilltop location made it particularly exposed to lightning activity.

Solution

We designed a comprehensive six-point protection plan with a Type 1 SPD at the service entrance and Type 2 SPDs at every panel including the guest house and pool equipment. We installed data line surge protection at the fiber entry point and cable TV demarc, and added dedicated UPS-grade protection in the home theater and wine cellar control system.

Result

The multi-layered system provides $500,000 in combined connected equipment warranty coverage. The homeowner's insurance carrier approved a premium discount, and the system has logged multiple intercepted surge events through its monitoring interface.

Permits & Compliance

Permit & Jurisdiction Guide

Permit requirements for surge protection vary by county. We handle the entire permitting process for you.

Fairfax County

No Permit Needed

Permit Process

Surge protector installation at an existing panel does not typically require a permit in Fairfax County. If grounding system modifications are needed, a permit may be required through the Fairfax County Land Development Services.

Inspection Notes

No inspection required for standard SPD installation. Grounding modifications may trigger inspection requirements.

Special Requirements

Must comply with Virginia Uniform Statewide Building Code
All SPDs must be UL 1449 listed

Loudoun County

No Permit Needed

Permit Process

Standard surge protector installation does not require a permit in Loudoun County. Permits are required if new circuits are added or grounding electrodes are modified. Applications are submitted through the Loudoun County Building and Development office.

Inspection Notes

Inspection not required for SPD-only installations. New circuit work requires rough-in and final inspections.

Special Requirements

SPDs must be installed per manufacturer specifications
Virginia licensed electrician required for all installations

Prince William County

No Permit Needed

Permit Process

Surge protector installation is considered maintenance-level work in Prince William County and does not require a permit. Grounding system upgrades or new dedicated circuits require permits through the Prince William County Development Services department.

Inspection Notes

No inspection for standard SPD installation. Grounding work requires inspection within 10 business days of completion.

Special Requirements

All work must comply with NEC 2020 as adopted by Virginia
Contractor must hold valid Prince William County business license

Arlington County

No Permit Needed

Permit Process

Arlington County does not require permits for surge protector installation at existing panels. Permits are required for any work that modifies circuits, adds new breakers beyond the SPD breaker, or modifies the grounding electrode system. Permit applications are handled through Arlington County Inspection Services.

Inspection Notes

Standard SPD installation does not require inspection. Any panel modifications beyond the SPD breaker connection require inspection.

Special Requirements

Arlington follows NEC 2020 with local amendments
Work must be performed by a Virginia-licensed electrician
Pricing Options

Surge Protection Pricing Tiers

Transparent pricing with options to fit your budget and project scope. Every tier includes our quality guarantee.

Standard

$300-$500

Single-panel Type 2 surge protection for standard homes with one main panel.

  • Type 2 SPD installed at main panel
  • 50,000+ joule rating
  • LED status indicator
  • Grounding system verification
  • Connected equipment warranty up to $50,000
  • 1-year installation warranty
Most Popular

Premium

$500-$800

Layered protection with Type 1 and Type 2 SPDs plus secondary entry point coverage.

  • Type 1 SPD at service entrance
  • Type 2 SPD at main panel
  • 80,000+ joule rating
  • Cable/phone/data line protection
  • Comprehensive grounding verification
  • Connected equipment warranty up to $100,000
  • 1-year installation warranty

Complete

$800-$1,500

Full-property protection for homes with multiple panels, subpanels, or detached structures.

  • Type 1 and Type 2 SPDs
  • Protection at all panels and subpanels
  • 100,000+ joule rating
  • All secondary entry point protection
  • Grounding system upgrade if needed
  • Point-of-use protectors for critical equipment
  • Connected equipment warranty up to $200,000
  • 1-year installation warranty

Prices may vary based on the specific requirements of your project, the condition of existing electrical systems, and your home's unique characteristics. Contact us for a free, no-obligation estimate tailored to your needs.

By Home Type

Surge Protection by Housing Type

Different home styles have unique electrical characteristics. Select your housing type to see specific considerations.

Colonial Homes

Common Issues

Original panels in older colonials often have limited breaker space for SPD installation
Two-story colonials may have subpanels on upper floors that need separate protection
Grounding systems in pre-1980 colonials frequently need upgrading before surge protection is effective
Long wire runs from panel to upper-floor electronics reduce point-of-use protection effectiveness

Special Considerations

Colonial homes in Northern Virginia frequently have panels in finished basements with limited clearance. We verify adequate working space and may recommend panel relocation if clearance is insufficient. Homes in McLean, Vienna, and Great Falls often have additions with subpanels that require separate SPD installations.

How It Works

Our Surge Protection Process

We follow a proven process to ensure your project is completed safely, on time, and to your complete satisfaction.

1

Panel Assessment

We examine your electrical panel to determine the best location and appropriate surge protector model for your home.

2

Protection Level Discussion

We discuss your protection needs based on equipment value, local lightning activity, and power quality concerns.

3

Clear Quote

You receive a straightforward estimate for the surge protector and installation.

4

Professional Installation

We install the surge protector at your panel with proper breaker connection and grounding.

5

System Integration

For homes with subpanels or detached structures, we ensure complete coverage.

6

Testing & Verification

We verify the protection is active and explain the status indicator lights.

7

Documentation

You receive warranty information and registration details for connected equipment coverage.

FAQs

Frequently Asked Questions

Get answers to common questions about our surge protection services.

What is the difference between a surge protector power strip and whole-home surge protection?

Power strip surge protectors only protect devices plugged into that strip and have limited capacity. Whole-home surge protection is installed at your electrical panel and protects every outlet, hardwired appliance, and device in your home. It provides much higher surge capacity and is the first line of defense before surges reach your equipment.

What causes power surges?

Lightning is the most dramatic cause, but most surges come from utility grid switching, power restoration after outages, and large appliances cycling on and off within your home. All of these events can damage sensitive electronics over time. Surges can enter through power lines, phone lines, or cable connections.

Do whole-home surge protectors wear out?

Yes, surge protectors absorb energy with each surge event, which degrades their capacity over time. Quality units have indicator lights that show protection status. Most last 5-10 years under normal conditions, but severe surge events or frequent activity may shorten lifespan. We recommend periodic inspection.

Will surge protection prevent damage from a direct lightning strike?

No surge protector can fully protect against a direct lightning strike to your home or power lines due to the extreme energy involved. However, whole-home protection greatly reduces damage from nearby strikes and grid-induced surges. For maximum protection, combine whole-home surge protection with good grounding and point-of-use protectors for critical equipment.

Can surge protection save money on my homeowner's insurance?

Some insurance companies offer discounts for homes with whole-home surge protection because it reduces the likelihood of claims for electronic damage. Contact your insurance provider to ask about available discounts. The equipment cost often pays for itself through premium savings and protected electronics.

Do I still need power strip surge protectors if I have whole-home protection?

Whole-home protection handles most surges, but a layered approach offers the best protection. For very sensitive equipment like computers, home theater systems, or medical devices, adding a quality point-of-use surge protector provides extra protection. Think of it as belt and suspenders.

How long does whole-home surge protector installation take?

Installation typically takes 1-2 hours. The surge protector is installed at or near your main electrical panel and wired to a dedicated breaker. No major electrical work or outages are required, and protection is active immediately after installation.

Does the NEC now require whole-home surge protection?

Yes, the NEC 2020 (Article 242) requires surge protective devices for all new dwelling unit services. While this applies specifically to new construction, many Northern Virginia homeowners are proactively adding surge protection to existing homes for the same safety benefits. Adding surge protection now brings your home in line with the current code standard.

What joule rating do I need for whole-home surge protection?

For residential whole-home protection, we recommend a minimum joule rating of 50,000 joules. Higher joule ratings indicate more surge absorption capacity before the unit needs replacement. Premium units offer 80,000-100,000 joules for maximum longevity. We select the appropriate rating based on your home's exposure and the value of connected equipment.

Can surge protection protect my HVAC system?

Yes, and it should. Modern HVAC systems use sensitive electronic control boards that are highly vulnerable to surge damage. A single surge can destroy a control board costing $500-$1,500 to replace. Whole-home surge protection at the panel guards your HVAC system along with every other connected appliance and device.

How do I know if my surge protector is still working?

Quality whole-home surge protectors have LED indicator lights that show protection status -- green means active, red or no light means the unit has absorbed its capacity and needs replacement. We recommend checking these indicators monthly. Some smart units can send alerts to your phone when protection degrades.

What is the difference between Type 1 and Type 2 surge protective devices?

Type 1 SPDs are installed on the line side of the main breaker and protect against external surges like lightning and utility events. Type 2 SPDs are installed on the load side and protect against both external and internal surges from appliances cycling. A layered approach using both types provides the most comprehensive protection for your home.

Pricing

What Affects the Cost?

Every home is different. Here are the factors that influence pricing for surge protection services.

Surge protector capacity (joule rating)
Panel type and available breaker space
Number of panels requiring protection
Connected equipment warranty coverage level
Additional protection for phone/cable/data lines
Brand and model specifications

Get Your Free Estimate

Contact us for a no-obligation quote tailored to your specific needs. We provide upfront, transparent pricing with no hidden fees.

Typical Timeline

1-2 hours

Typical Price Range

$300-$800 installed

Warranty & Guarantee

Surge protector manufacturers provide 5-10 year product warranties, and most include connected equipment warranties covering up to $100,000 in damage to devices protected by the unit. Our 1-year installation workmanship warranty covers all labor, and we replace failed units at no additional labor cost.

Brands & Certifications

EatonSiemensLevitonSquare D by Schneider ElectricIntermaticUL 1449 ListedType 1 and Type 2 SPDs

Maintenance Tips

Check surge protector indicator lights monthly to confirm protection is still active
Test your grounding system annually to ensure surge protection can function properly
Replace the surge protector unit immediately when the protection indicator shows degraded or failed status
Add point-of-use surge protectors for critical electronics like computers and home theaters as a second layer
Inspect the surge protector and panel connections after any major storm event or nearby lightning strike

Safety Warnings

Surge protectors are not lightning rods -- unplug sensitive electronics during severe thunderstorms for maximum safety
A degraded surge protector with a failed indicator light provides zero protection and must be replaced immediately
Improper or degraded grounding renders surge protection ineffective -- your grounding system must be verified
Never daisy-chain power strips together, as this creates fire hazards and voids surge protection warranties

Code Requirements

NEC 2020 Article 242 requires surge protective devices for all new dwelling unit services
All installed surge protectors must comply with UL 1449 4th Edition safety standards
Proper grounding per NEC 250 is required for surge protection to function effectively
NEC 2020 surge protection requirements apply to new construction and major service upgrades
Our Promise

Why Choose AJ Long Electric for Surge Protection

AJ Long Electric brings specialized surge protection expertise to every installation in Northern Virginia. Unlike general handyman services that simply bolt a device to your panel, we approach surge protection as a complete system -- verifying your grounding electrode system, assessing your panel capacity and configuration, identifying all secondary surge entry points, and designing a layered protection strategy tailored to your home and equipment. Our electricians are trained on the latest SPD technology from Eaton, Siemens, and Square D, and we stock commercial-grade units with joule ratings of 50,000 to 100,000+ that far exceed the consumer-grade devices found at hardware stores. We understand the specific power quality challenges across Northern Virginia, from the aging Dominion Energy infrastructure serving older Fairfax County neighborhoods to the rapid-growth grid stress in Loudoun County developments. Every installation includes a grounding impedance test, because a surge protector is only as effective as the grounding path it relies on -- a step that most competitors skip entirely. We register your connected equipment warranty, provide documentation for your insurance provider, and schedule follow-up verification at no additional charge. Our transparent pricing, licensed electricians, and commitment to doing the job right the first time have made us the trusted choice for surge protection across the DC metro area.

Licensed

Virginia Licensed Electricians

Insured

Fully Bonded & Insured

40+ Years

Serving Northern Virginia

5-Year Warranty

On All Workmanship

Service Areas

Surge Protection Available Throughout the DMV

We proudly provide surge protection services across Northern Virginia, Washington DC, and Maryland. Click on your area to learn more.