Why Aluminum Wiring Is a Problem
In the late 1960s and 1970s, copper prices spiked and builders switched to aluminum for branch circuits — the wires to your outlets and switches. The wire itself is fine. The connections are the problem: aluminum expands and contracts more than copper with heat, so connections loosen over time. Loose connections arc. Arcing starts fires. The U.S. Consumer Product Safety Commission has flagged this for decades.
In Alexandria, aluminum wiring shows up most in homes built or remodeled between about 1965 and 1975 — parts of North Ridge, Seminary Hill additions, and West End colonials.
Typical Cost Range
A full replacement of aluminum branch circuits generally falls in the $8,000–$20,000 range for a typical home, similar to a whole-house rewire — because that is effectively what it is. A cheaper option exists: approved remediation of the connections (using listed connectors at every outlet and switch), which can cost a few thousand dollars. But remediation does not satisfy every insurer, and it leaves 50-year-old wire in the walls.
Replace vs. Remediate: An Honest Take
Full replacement removes the problem entirely. New copper, new devices, new panel if needed. Insurers accept it without question. It costs more.
Connection remediation (using approved connectors, not just wire nuts) fixes the known failure point at every box. It is recognized by safety authorities and costs much less. But some insurers still want full replacement, and future buyers may ask for it anyway.
We do both, and we will tell you which one your situation actually calls for. If your insurer demands replacement, remediation money is wasted — we say that up front.
What Moves the Price
Home size, number of circuits, panel condition, and wall access — the same factors as any rewire. For remediation specifically, the outlet and switch count matters: every box gets opened and re-terminated.
The Science in Plain English
Why do aluminum connections fail while copper ones last? Two reasons. First, aluminum expands and contracts more than copper when it heats and cools — and every time current flows, the wire warms slightly. Over thousands of cycles, the connection loosens. Second, aluminum forms an oxide layer on its surface that resists electricity, creating heat at the connection point. More heat, more expansion, looser connection, more heat — a slow spiral that ends in arcing. Copper doesn't behave this way, which is why the industry went back to it.
What Remediation Day Looks Like
If you choose connection remediation instead of full replacement, here's the day: the crew opens every outlet, switch, and junction box in the house — usually 40 to 80 boxes. Each aluminum connection is cut back to clean wire and re-terminated with an approved connector (the industry-standard repair uses listed twist-on connectors designed for aluminum-to-copper). Devices get replaced where needed. The panel connections are redone too. Power is off in sections as they work through the house, and it's typically a one-to-two-day job.