
Copper vs Aluminum Wiring: What Every Homeowner Should Know
Does your home have aluminum wiring? Understand the critical differences between copper and aluminum electrical wiring,...

Eliminate the fire hazard of aluminum branch circuit wiring with professional remediation.

Aluminum branch circuit wiring was used in approximately 2 million homes built between 1965 and 1973 as a cheaper alternative to copper during a period of high copper prices. Unfortunately, aluminum wiring has proven to be a significant fire hazard -- the Consumer Product Safety Commission (CPSC) reports that homes with aluminum wiring are 55 times more likely to have fire-hazard conditions than homes with copper wiring. The problem stems from aluminum's tendency to oxidize, expand and contract at a different rate than copper and steel connections, and develop loose connections that overheat and arc over time. AJ Long Electric provides professional aluminum wiring remediation throughout Northern Virginia, serving homeowners in Fairfax County, Loudoun County, Prince William County, and Arlington. We offer two proven remediation approaches: complete rewiring with copper (the gold standard) or COPALUM crimp connections at every junction point, which is the only repair method recommended by the CPSC. Our licensed electricians inspect every outlet, switch, junction box, and connection point in your home, identifying all aluminum wiring locations and assessing their condition. We then perform the selected remediation method throughout the home, ensuring every connection is safe, secure, and code-compliant. This is one of the most important safety upgrades you can make to a home with aluminum wiring.
Eliminate the 55x higher fire risk associated with aluminum branch circuit wiring in your home.
Many insurance companies require aluminum wiring remediation or charge higher premiums for homes with aluminum wiring.
Know that every electrical connection in your home is safe and not silently overheating behind your walls.
Aluminum wiring remediation removes a major red flag that deters home buyers and complicates sales.
Bring your home's wiring connections up to current safety standards with CPSC-recommended methods.
Our licensed electricians are ready to assist you in Northern Virginia.
Serving Fairfax, Arlington, Alexandria, Loudoun, and Prince William Counties.
Fairfax, Arlington, Alexandria, Loudoun & Prince William Counties
Northern Virginia has one of the highest concentrations of aluminum wiring homes in the Mid-Atlantic region, a direct result of the massive suburban building boom that occurred between 1965 and 1973 when copper prices drove builders to aluminum alternatives. Communities throughout Fairfax County -- including Vienna, Oakton, Burke, Springfield, and Annandale -- were developed extensively during this period, leaving thousands of homes with aluminum branch circuit wiring that is now over 50 years old. Loudoun County's older communities near Leesburg and Sterling also contain pockets of aluminum-wired homes from this era. Arlington and Falls Church saw significant townhome and multi-family construction during this period as well. The Northern Virginia real estate market's intensity makes aluminum wiring a critical issue: homes regularly change hands, and home inspections consistently flag aluminum wiring as a safety concern. Insurance companies operating in Virginia have become increasingly aggressive about requiring remediation, with several major carriers refusing to write new policies for homes with unaddressed aluminum wiring. The CPSC's finding that aluminum-wired homes are 55 times more likely to have fire-hazard conditions drives both regulatory attention and buyer awareness in this educated, safety-conscious market.
See how we have helped homeowners across Northern Virginia with their aluminum wiring replacement needs.
Challenge
The homeowners were selling their four-bedroom colonial and the buyer's home inspection flagged aluminum branch circuit wiring throughout the house. The buyer's lender required remediation before closing, giving the sellers a 45-day deadline. Multiple outlets showed signs of overheating with discolored cover plates.
Solution
AJ Long Electric performed a complete COPALUM crimp remediation of all 87 aluminum-to-copper connection points in the home. We worked room by room over two days, crimping every outlet, switch, and junction box connection with CPSC-approved COPALUM connectors and documenting each one photographically.
Result
The home passed re-inspection and the sale closed on time. The buyers received a lifetime warranty on all COPALUM connections, and the sellers avoided a $15,000 price reduction that the buyer had initially demanded in lieu of remediation.
Challenge
During a kitchen remodel, the contractor discovered aluminum branch circuit wiring behind the walls. The homeowner's insurance company was notified and gave a 90-day ultimatum to remediate all aluminum wiring or face policy cancellation. The three-level townhome had aluminum wiring on all three floors.
Solution
We performed COPALUM crimp remediation on 64 connection points across all three levels. For the kitchen circuits being exposed during renovation, we replaced the aluminum wiring entirely with new 12-gauge copper Romex, adding dedicated 20-amp circuits for the new appliances and GFCI protection at the countertop outlets.
Result
The insurance company accepted our remediation documentation and renewed the policy at standard rates, saving the homeowner approximately $1,200 per year in elevated premiums. The new kitchen circuits now safely support modern appliance loads.
Challenge
A family purchased a split-level home knowing it had aluminum wiring, planning to renovate extensively. Two outlets in the family room had visible scorch marks, and the home inspector found evidence of amateur repairs using standard copper wire nuts on aluminum connections -- a dangerous combination that accelerates overheating.
Solution
AJ Long Electric performed a complete copper rewire of the entire home, replacing all aluminum branch circuits with 12-gauge and 14-gauge copper Romex. We upgraded the panel from 100 amps to 200 amps, added AFCI protection for all living spaces, and installed dedicated circuits for the kitchen, laundry, and home office.
Result
The home now has a completely modern wiring system with no aluminum wiring remaining. The new 200-amp panel provides ample capacity for the family's planned additions including a hot tub and Level 2 EV charger.
Challenge
The owners of a 5,200 sq ft estate were preparing to list the property at $1.8 million. Their real estate agent insisted that unaddressed aluminum wiring would deter buyers and could reduce offers by $30,000-$50,000. The home had 142 aluminum-to-copper connection points across two levels plus a finished basement.
Solution
We completed a full COPALUM crimp remediation over three days, addressing all 142 connections throughout the home. We also replaced the original 1969 panel with a modern 200-amp Square D panel and added whole-house surge protection. Every connection was photographed and cataloged in a professional remediation report.
Result
The property sold within two weeks at asking price. The remediation report and lifetime COPALUM warranty were highlighted in the listing and gave buyers confidence in the electrical system's safety.
Permit requirements for aluminum wiring replacement vary by county. We handle the entire permitting process for you.
Permit Process
Fairfax County requires an electrical permit for complete aluminum wiring rewiring projects. COPALUM crimp remediation does not typically require a permit since it is classified as a repair, but we recommend confirming with Land Development Services. Rewiring permits are submitted through the online portal with typical approval in 3-5 business days.
Inspection Notes
For complete rewires, inspectors verify NEC compliance including AFCI protection, proper wire sizing, and connection quality. They check that all aluminum wiring designated for removal has been disconnected and that no mixed-metal connections remain without approved connectors.
Special Requirements
Permit Process
Loudoun County requires permits for rewiring work through the Department of Building and Development. COPALUM repairs are generally permit-exempt. Rewiring permit applications can be submitted online or at the Leesburg office, with typical turnaround of 2-4 business days.
Inspection Notes
Loudoun inspectors pay close attention to grounding and bonding on rewired circuits. They verify that all new circuits include an equipment grounding conductor and that the grounding electrode system is adequate for the updated installation.
Special Requirements
Permit Process
Prince William County requires electrical permits for rewiring through Development Services. Residential rewiring permits typically process in 2-3 business days via the online system. COPALUM crimp repairs may not require a permit, but the county recommends contacting the office to confirm.
Inspection Notes
Prince William inspectors verify wire sizing, breaker compatibility, and NEC compliance for all new circuits. They confirm that aluminum wiring has been properly decommissioned and that no aluminum-to-copper splices remain without listed connectors.
Special Requirements
Permit Process
Arlington County processes electrical permits through the Inspections Services Division. Due to the high concentration of 1960s-1970s homes in Arlington, the county has experience with aluminum wiring projects and permits are typically approved within 1-3 business days. COPALUM repairs are classified as maintenance and may not require a permit.
Inspection Notes
Arlington inspectors are thorough with aluminum wiring projects given the prevalence of affected homes in the county. They verify COPALUM crimp quality, check for proper labeling, and ensure no connections were missed.
Special Requirements
Transparent pricing with options to fit your budget and project scope. Every tier includes our quality guarantee.
$3,000-$5,000
COPALUM crimp remediation for smaller homes with fewer than 75 connection points, addressing all aluminum-to-copper connections throughout the home.
$5,000-$8,000
Comprehensive COPALUM remediation for larger homes with 75-150 connection points, including panel inspection and thermal imaging verification.
$8,000-$20,000
Full copper rewire replacing all aluminum branch circuit wiring with modern copper Romex, including panel upgrade and AFCI protection.
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.
Different home styles have unique electrical characteristics. Select your housing type to see specific considerations.
Colonial homes in Vienna, McLean, and Oakton built during the aluminum wiring era typically have 80-120 connection points. The two-story layout means wiring runs through floor cavities between levels, and junction boxes may be concealed behind finished basement ceilings. COPALUM remediation is particularly effective for colonials since it addresses every connection point without requiring the wall access that a full rewire demands.
We follow a proven process to ensure your project is completed safely, on time, and to your complete satisfaction.
We inspect every outlet, switch, junction box, and panel connection to identify all aluminum wiring locations.
We evaluate the condition of existing connections, looking for signs of overheating, oxidation, or damage.
We recommend the appropriate remediation method (COPALUM crimp or complete rewiring) and provide a detailed quote.
Working room by room, we address every aluminum-to-device connection using the selected method.
We verify every remediated connection for proper torque, continuity, and secure installation.
We provide written documentation of all work performed for your records and insurance company.
Get answers to common questions about our aluminum wiring replacement services.
Yes. The CPSC reports that homes with aluminum wiring are 55 times more likely to have fire-hazard conditions at connections. Aluminum expands and contracts more than copper, causing connections to loosen over time. These loose connections overheat, arc, and can start fires behind walls where you cannot see them.
COPALUM is a specially designed crimp connector that permanently joins aluminum wire to a short copper pigtail using a powered crimping tool. The CPSC considers COPALUM the only acceptable repair method short of complete rewiring. The crimp creates a cold-welded connection that will not loosen or oxidize over time.
COPALUM crimp remediation typically costs $50-$75 per connection point, totaling $3,000-$6,000 for an average home. Complete copper rewiring costs $8,000-$20,000 depending on home size and accessibility. We provide detailed quotes after a thorough inspection of your home's wiring.
While purple Ideal Twister AL/CU wire nuts are sometimes used, the CPSC does not recommend this method as a permanent repair. AlumiConn connectors and COPALUM crimps are the only connections the CPSC recognizes as safe permanent repairs for aluminum wiring. We use CPSC-recommended methods exclusively.
Many insurance companies in Virginia either refuse to insure homes with unrepaired aluminum wiring, require remediation within a specified timeframe, or charge significantly higher premiums. After remediation, we provide documentation that you can submit to your insurer for updated coverage terms.
Check the wiring at your electrical panel or remove an outlet cover plate and look at the wire -- aluminum wire is silver-colored (copper is orange/brown). The wire jacket may be stamped 'AL' or 'Aluminum.' Most affected homes were built between 1965 and 1973. We offer inspection services if you are unsure.
Both methods effectively address the hazard. Complete rewiring is the most thorough solution but is significantly more expensive and invasive. COPALUM crimps address the hazard at every connection point (where fires start) at a fraction of the cost. For most homeowners, COPALUM is the practical, CPSC-recommended solution.
No. Aluminum wiring connections deteriorate slowly over time. The fact that no fire has occurred yet does not mean the connections are safe -- overheating may already be happening behind your walls. Many aluminum wiring fires occur in older homes that functioned without visible problems for years before a connection finally failed.
Every home is different. Here are the factors that influence pricing for aluminum wiring replacement services.
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.
1-3 days (COPALUM); 3-7 days (complete rewire)
$3,000-$6,000 (COPALUM); $8,000-$20,000 (rewire)
All aluminum wiring remediation includes a lifetime warranty on COPALUM crimp connections, which are designed to be permanent. Complete rewiring carries a 1-year workmanship warranty on all new copper wiring and connections. We provide documentation for insurance purposes.
Explore other electrical services that complement aluminum wiring replacement.
Upgrade your home's electrical capacity with safe, modern panel installations.
Detailed safety audits for home buyers and regular maintenance.
Bring your home's electrical system up to current NEC code standards.
Replace outdated knob-and-tube wiring to eliminate fire hazards and meet modern standards.
AJ Long Electric is one of the few electrical contractors in Northern Virginia with certified COPALUM crimping technicians on staff and the specialized powered crimping tools required for this CPSC-recommended repair method. We have remediated aluminum wiring in hundreds of homes across Fairfax, Loudoun, Prince William, and Arlington counties, and we understand the urgency that homeowners face when insurance companies issue ultimatums or real estate transactions are at stake. Our systematic room-by-room approach ensures that no connection point is missed -- we inspect every outlet, switch, junction box, light fixture, and panel connection in the home. We provide detailed photographic documentation of every connection, along with a professional remediation report that insurance companies and home buyers readily accept. For homeowners who prefer the gold standard of complete copper rewiring, our electricians perform full rewires with minimal wall disruption using fishing techniques through attic and basement access points. We handle all permit coordination with local jurisdictions and provide lifetime warranties on COPALUM connections. Our pricing is transparent, and we never pressure homeowners into more expensive solutions when COPALUM remediation will effectively address the hazard.
Virginia Licensed Electricians
Fully Bonded & Insured
Serving Northern Virginia
On All Workmanship
We proudly provide aluminum wiring replacement services across Northern Virginia, Washington DC, and Maryland. Click on your area to learn more.
Learn more about aluminum wiring replacement from our team of licensed electricians in Northern Virginia.

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