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Aluminum Wiring Repair & Replacement in Toronto

Many Toronto homes built in the late 1960s and 1970s still have aluminum branch-circuit wiring. Our licensed electricians find the weak points, make every connection safe with approved copper pigtails or a copper rewire, take out the ESA permit and give you the paperwork your insurer asks for. Supply-and-install work is covered by our 3-year warranty.

 

Serving Toronto, North York, Etobicoke, Scarborough, Mississauga, Vaughan, Brampton, Markham, Richmond Hill and the GTA.

Aluminum Wiring Repair Toronto

New Siemens breaker panel with a neatly labelled circuit directory

Is Aluminum Wiring Safe?

Aluminum wiring is not automatically dangerous. The problem is the connections. Aluminum expands and contracts more than copper as it heats and cools, and its surface oxidizes, so over the years the screws at outlets, switches and light fixtures can work loose. A loose aluminum connection runs hot, and that heat is what damages devices and can start a fire. Most of the risk sits at the connection points, which is why a proper repair focuses on every one of them.
Murtex Electric electrician in protective coveralls ready for a job

Copper Pigtailing or a Full Rewire

For most homes the practical fix is pigtailing. At every outlet, switch, light fixture and panel connection, we join a short length of copper wire to the aluminum conductor with a connector approved for aluminum-to-copper use, then connect the copper to the device. Where wiring is damaged, a renovation opens the walls, or you would simply rather have the aluminum gone, we replace circuits with new copper wiring. We explain both options and price them in writing.

Why Our Customers Trust Us

Fully Licensed & Insured

We carry all the certifications and insurance you expect for complete peace of mind.

Transparent Pricing

No hidden fees—ever. You’ll know the full cost before we start.

24/7 Emergency Support

Power problems don’t wait for business hours. We’re ready when you need us.

Code-Compliant Work

Every job meets or exceeds Ontario Electrical Safety Code standards.

Experienced Professionals

Licensed electrical contractor, ESA/ECRA #7016854.

Satisfaction Guaranteed

We’re not happy until you’re happy—with prompt follow-ups and quality double-checks.

Why Our Customers Trust Us

Fully Licensed & Insured

We carry all the certifications and insurance you expect for complete peace of mind.

Transparent Pricing

No hidden fees—ever. You’ll know the full cost before we start.

24/7 Emergency Support

Power problems don’t wait for business hours. We’re ready when you need us.

Code-Compliant Work

Every job meets or exceeds Ontario Electrical Safety Code standards.

Experienced Professionals

Licensed electrical contractor, ESA/ECRA #7016854.

Satisfaction Guaranteed

We’re not happy until you’re happy—with prompt follow-ups and quality double-checks.

Aluminum Wiring in Toronto Homes

Aluminum branch-circuit wiring was installed in some Canadian homes from about the mid-1960s to the late 1970s, when copper was expensive. In Toronto and the GTA you will find it in houses, townhouses and some low-rise buildings from that era, including parts of Etobicoke, North York and Scarborough and many of the suburbs that grew in those years. If your home was built or rewired in that period, it is worth finding out what is behind the walls. (You will also see it spelled “aluminium” in Canada; it is the same thing.)

How to tell if your home has aluminum wiring

  • Look at the cable jackets in an unfinished part of the basement or near the panel. Aluminum cable is usually printed with “AL” or “ALUMINUM”.
  • Inside the panel, aluminum conductors are a dull silver colour rather than copper. Leave the panel cover on and let an electrician check this part.
  • A home inspection report will often note aluminum wiring when you buy or sell.
  • Large aluminum service conductors feeding the panel are common and normal. The concern is the smaller 15- and 20-amp branch circuits that feed your outlets, switches and lights.

Warning signs to act on

Call an electrician soon if you notice cover plates or switches that feel warm, lights that flicker or dim, outlets that work on and off, a smell of hot plastic, scorch marks on a device, or a breaker that trips for no clear reason. If you see smoke or sparking, turn off that circuit at the panel if it is safe to do so, and call our 24/7 emergency line at (647) 529-2972.

Our aluminum wiring repair process

  1. Assessment. We confirm the wiring type, count the outlets, switches, fixtures and panel connections, and look for overheated or damaged devices.
  2. Written quote. You get a clear price for pigtailing, partial rewiring or a full copper rewire, with no hidden fees.
  3. ESA permit. As a licensed electrical contractor, we file the notification with the Electrical Safety Authority.
  4. Repair. We pigtail every connection with approved connectors, replace damaged or unsuitable devices and check the connections in the panel.
  5. Inspection and paperwork. We arrange the ESA inspection where required, so you have proof of the work for your insurer or a future buyer.

Insurance, buying and selling

Some insurance companies ask about aluminum wiring before they quote or renew a policy, and buyers often see it flagged in a home inspection. Requirements differ from one insurer to the next, so ask yours exactly what they need. In many cases that is proof of a repair by a licensed electrical contractor under an ESA permit, which is what we provide. If you are buying a home, we can look at the wiring before you close, so you know what you are dealing with.

Combine it with other upgrades

Homes with aluminum wiring often have other work worth doing at the same time, such as a panel and service upgrade, new pot lights or an EV charger. Planning it together means one permit and less disruption. For pre-war homes, see our knob and tube replacement service.

Aluminum Wiring FAQs

Yes. Properly installed and maintained aluminum wiring is permitted. The concern is connections that have loosened over time and devices that are not rated for aluminum, and that is what a repair fixes.

Not usually. Pigtailing every connection with approved connectors deals with the main risk in most homes. A partial or full copper rewire makes sense when wiring is damaged, when walls are already open for a renovation, or when you would rather remove the aluminum completely.

Standard outlets and switches are made for copper wire. A device connected to aluminum must be marked as suitable for aluminum, or the aluminum must be pigtailed to copper with approved connectors. Because loose aluminum connections are a fire risk, have a licensed electrician do this work.

Yes. We file the notification (permit) with the Electrical Safety Authority and arrange the inspection where it is required, so you have proof of the work.

It depends on how many outlets, switches, lights and panel connections your home has. We count them during the assessment and give you the timeline together with your written quote.

Yes. Supply-and-install work is covered by our 3-year warranty.

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Licensed Electrical Contractor · ECRA/ESA #7016854 · ESA Pre-Authorized
100% ESA inspection passing rate over the past 2 years