Electrical Service & Panel Upgrades — Toronto, Aurora & Tottenham

If your breaker trips every time the microwave and the kettle run at once, or your panel still has a row of fuses instead of switches, it's probably time for an upgrade. Milestone Electrical installs and replaces residential and commercial panels across Toronto, Aurora, and Tottenham — from straightforward 100 to 200 amp swaps to full 400 amp commercial services.

Milestone Electrical has been doing panel and service upgrades across Toronto, Aurora, and Tottenham — not just quoting them, actually doing the work, from small residential swaps to larger commercial jobs. Every electrician on the team is ECRA/ESA licensed, and we pull permits on every upgrade.

Flickering lights, breakers that trip for no clear reason, or the power cutting out when a few things run at once — these usually point to a panel that's undersized or aging out. It's not something to ignore. An outdated panel is one of the more common causes of house fires, and it's also one of the easier problems to actually fix.

Signs your panel needs an upgrade

Most homeowners don't think about their panel until something forces the issue. A few things worth watching for:

  • Breakers that trip regularly, even without an obvious overload

  • A fuse box (common in homes built before the 1960s) instead of breakers

  • Warm or discoloured outlets and switch plates

  • A burning smell near the panel

  • Your insurance company flagging outdated wiring or asking for an upgrade before renewal

  • Adding an EV charger, hot tub, or major appliance and finding out your panel doesn't have the capacity

  • Buzzing or humming coming from inside the panel box

Any one of these on its own isn't necessarily an emergency, but panels don't get safer with age. If you're seeing more than one, it's worth having someone take a look.

A panel upgrade does a few things at once: it cuts down on nuisance trips and outages, brings your system up to current code, and — worth knowing if you're planning to sell — shows up as a real plus on a home inspection report. Buyers and insurers both tend to flag old fuse boxes and undersized panels.

Beyond safety, a properly sized panel handles modern loads better — AC, EV chargers, whatever gets added down the line — without constantly running at its limit. That usually means fewer service calls and a system that isn't working harder than it needs to.

What a panel upgrade actually involves

We start with an on-site assessment — checking your current amperage, the condition of your wiring, and what the panel is actually feeding. From there we pull the required ESA permit, coordinate the temporary power disconnect with your utility (this part usually means a few hours without power, which we schedule around you), and install the new panel with proper labelling and breaker sizing for your home or business.

Once the work is done, an ESA inspector signs off before we close everything up. That inspection isn't optional paperwork — it's what protects you if there's ever an insurance claim down the line.

Most residential jobs take a day. Commercial upgrades or anything involving a service size increase can take longer depending on what the utility needs to coordinate on their end.