Last updated: September 2026

Ontime Electric converts fuse boxes to modern circuit breaker panels for Toronto homeowners — including the ESA Notification of Work, required ESA review/inspection, and documentation your insurance company may request. We are a Licensed Electrical Contractor (ECRA/ESA Licence #7009495) with over 20 years of experience in Toronto and a 4.9-star Google rating.

Why Your Insurance Company Cares

Older residential fuse box in a Toronto home

Fuse panels are common in Toronto homes built before the 1970s — especially in East York, the Beaches, and older areas across the city. Fuses do provide circuit protection, but a blown fuse must be replaced manually, and installing an oversized fuse can defeat the circuit’s intended protection.

Some insurers may surcharge, restrict coverage, require an electrical inspection, or request an upgrade for older fuse-based electrical systems. After the conversion is completed and accepted, you receive the ESA Certificate of Acceptance and project documentation you can provide to your insurer.

Signs It May Be Time to Convert Your Fuse Box

  • Your insurer or broker has asked about the electrical panel
  • Fuses blow regularly or oversized fuses are installed
  • You’re buying or selling an older home and the fuse box was flagged during an inspection
  • You’re adding an EV charger, air conditioning, electric appliances, or renovating the kitchen
  • The fuse panel is warm, buzzing, scorched, or shows signs of overheating

If the panel is warm, buzzing, or shows scorching, have it assessed by a licensed electrical contractor as soon as possible.

What’s Included in Fuse Box to Breaker Panel Conversion?

Most fuse box to breaker panel conversions in Toronto fall between $1,000 and $3,000. The exact cost depends on the existing service size, panel location and condition, wiring, accessibility, and any additional electrical work required. Your quote confirms the price before work begins. For broader panel pricing, see our panel upgrade cost guide.

Included in a Fuse Box to Breaker Panel Conversion

  • Assessment of the panel, service size, and wiring condition
  • New breaker panel with properly sized circuit breakers
  • ESA Notification of Work
  • Required ESA review or inspection
  • ESA Certificate of Acceptance after the work is accepted
  • Utility coordination where required
  • Upfront free quote

What Affects the Cost?

  • Service upgrade if the existing electrical capacity is insufficient
  • Corrections to overloaded, double-tapped, or improperly connected circuits
  • Grounding or bonding corrections identified during assessment
  • Panel relocation, if required
  • Older wiring such as knob-and-tube or aluminum wiring
  • Utility fees or service work, where applicable

Our Fuse Box Conversion Process

  • Step 1: Assessment — we inspect the fuse panel, electrical service size, wiring condition, grounding, and existing circuits.
  • Step 2: Written quote — you receive the full scope and price before work begins, including the required ESA Notification of Work.
  • Step 3: ESA Notification of Work — we file the required electrical notification before the conversion.
  • Step 4: Conversion — the old fuse box is removed and replaced with a properly sized modern circuit breaker panel. On-site work is often completed in one working day, depending on the existing system and project scope.
  • Step 5: ESA review/inspection and documentation — once the installation is reviewed and accepted, ESA issues the Certificate of Acceptance.
  • Step 6: Insurance documentation — you receive the ESA Certificate of Acceptance and available project documentation for your insurer or records.

The Toronto Homes Where We See Fuse Panels Most

Modern circuit breaker panel after fuse box conversion in Toronto

Older Toronto homes in neighbourhoods such as East York, the Beaches, Leslieville, Scarborough, and York may still have fuse panels or lower-capacity electrical services. Wartime bungalows, older semis, and other established homes may also combine fuse panels with older wiring or electrical services designed for much lower household demand.

If you’re buying, selling, renovating, or renewing home insurance, identifying the condition and capacity of the electrical system early gives you time to address any required upgrades on your own schedule.

Hidden Electrical Issues We May Find During a Fuse Box Conversion

Older fuse panels can sometimes reveal other electrical issues. If we identify knob-and-tube wiring, aluminum wiring, overloaded circuits, grounding problems, or other work that needs attention, we document the issue, explain the available options, and quote any additional work separately before proceeding.

No bundled mystery charges or unexpected electrical work are added without discussing them with you first.

Why Toronto Homeowners Choose Ontime Electric

Licensed electrician icon

Licensed and insured electrical contractor (LEC) — ECRA/ESA Licence #7009495 and WSIB coverage

Upfront pricing icon

Published pricing and a free written quote before work begins

PARTS GUARANTEE icon

Parts and workmanship guarantee

Guaranteed icon

ESA Notification of Work, required review/inspection, and documentation handled as part of the project

experienced electricians icon

4.9 Google rating and over 20 years serving Toronto

Fuse Box Conversion FAQs

Fuse box replacement cost in Toronto is usually $1,000–$3,000 for a conversion to a modern breaker panel. The final price depends on the electrical service size, panel condition, wiring, accessibility, and whether additional work is required. The ESA Notification of Work and required ESA review are included in the project scope.

Possibly. Some insurers may reassess coverage, restrictions, or premiums after an older fuse box is replaced with a modern breaker panel. Your insurance company or broker can confirm how the upgrade affects your specific policy.

No. Having an existing fuse box is not automatically illegal in Ontario. However, older fuse-based systems may raise safety, capacity, or insurance concerns, particularly when renovations or new high-demand electrical equipment are being added.

On-site work for a straightforward conversion is often completed in one working day. The timeline can vary depending on the panel condition, existing wiring, service requirements, and any additional work identified during the assessment.

Yes. Replacing a fuse box with a breaker panel requires an ESA Notification of Work. Ontime Electric files the notification, and once the completed installation is reviewed and accepted, you receive a copy of the ESA Certificate of Acceptance.

Not necessarily. A fuse box conversion and an electrical service upgrade are not the same thing. A load calculation and assessment determine whether your existing service has enough capacity. If additional capacity is required, see our 100 amp to 200 amp service upgrade page. Combining both into one project can simplify electrical and utility coordination when both are required.

It can be. A 60 amp service may not provide enough capacity for modern electrical loads such as EV chargers, air conditioning, electric cooking, or major renovations. A load calculation and service assessment determine whether the fuse box can simply be converted or whether a service upgrade is also required.

Yes. Power must be disconnected while the fuse panel is being replaced. For a straightforward conversion, the outage is typically limited to the installation period, and any required utility coordination is scheduled in advance.

Ontime Electric provides fuse box to breaker panel conversions throughout Toronto and the GTA. We are a licensed and insured electrical contractor under ECRA/ESA Licence #7009495 and have served Toronto for over 20 years. Call 416-882-6000 for a free quote.

A fuse box uses replaceable fuses that blow when a circuit is overloaded, while a breaker panel uses circuit breakers that can be reset. Modern breaker panels also make circuit management and future electrical upgrades easier. Converting a fuse box does not automatically mean rewiring the entire house or upgrading the electrical service — those are only required if the assessment identifies a need.