If your lights flicker every time the microwave kicks on, or your breakers trip more often than they used to, your home may be sending you a clear signal. As homes take on more devices, EV chargers, and high-draw appliances, older panels often can’t keep pace safely.
Here’s how to tell whether your home is due for a panel upgrade — and what the process actually involves.
Why Panel Capacity Matters More Than Ever
Many homes across the GTA were built with 60-amp or 100-amp panels, which were standard decades ago but often can’t support today’s electrical loads. Central air, hot tubs, EV chargers, and modern kitchens all draw significant power, and an undersized panel forces your system to work harder than it should.
This isn’t just an inconvenience — it’s a safety issue. Overloaded panels are one of the more common causes of residential electrical fires, which is part of why Ontario’s Electrical Safety Code treats panel work as regulated, inspected work rather than a DIY project.
6 Signs You Need a Panel Upgrade
Some warning signs are obvious, while others are easy to dismiss as “normal.” Watch for:
- Frequent tripped breakers — especially when running two appliances at once
- A fuse box instead of breakers — older fuse panels are harder to insure and repair
- Flickering or dimming lights, even with new bulbs
- A panel over 20-25 years old, or one rated below 100 amps
- Burning smells or discoloration around the panel or outlets
- Buzzing sounds coming from the panel itself
If even one of these sounds familiar, it’s worth having a licensed electrician assess your panel. We cover common electrical warning signs across the whole home in our guide to common electrical problems, but panel-specific issues deserve their own attention since they affect your entire home’s power supply.
100-Amp vs. 200-Amp: What’s Right for Your Home?
Most newer homes across the GTA are built with 200-amp service, and it’s increasingly becoming the practical minimum for homeowners planning any of the following:
- An EV charger installation
- A finished basement or home addition
- A hot tub, pool, or sauna
- A heat pump or electric heating upgrade
- A home office with multiple high-draw devices
If you’re specifically weighing an EV charger against your current panel size, we broke this down in more detail in Can You Install an EV Charger with a 100-Amp Electrical Panel? — it’s one of the most common questions we get from homeowners planning ahead.
What Happens During a Panel Upgrade
A professional panel upgrade is more involved than swapping a box on the wall. Here’s the general process:
- Assessment — an electrician evaluates your current panel, wiring, and household load needs
- Permit filing — panel upgrades require a permit through the Electrical Safety Authority (ESA), Ontario’s regulatory body for electrical safety
- Power shutdown coordination — your utility provider briefly disconnects power so the panel can be safely replaced
- Installation — the old panel is removed and a new one, sized to your home’s needs, is installed
- Inspection — the completed work is inspected to confirm it meets the Ontario Electrical Safety Code
This is licensed electrician work, not a homeowner project — improper panel work is a serious fire and shock hazard, and unpermitted work can also affect your home insurance coverage.
How Much Does a Panel Upgrade Cost?
Costs vary depending on your home’s size, current panel condition, and target amperage, but most residential upgrades across the GTA involve:
- The panel and breaker hardware itself
- Labour for removal and installation
- ESA permit and inspection fees
- Any additional wiring needed to bring circuits up to code
Getting an on-site assessment is the most accurate way to know your actual cost, since older homes sometimes need extra work to bring wiring up to current standards.
Don’t Wait for a Warning Sign to Become an Emergency
A panel that’s struggling to keep up rarely fixes itself — it tends to get worse, especially as more devices get added to the home. If you’re noticing any of the signs above, or you’re planning a renovation, EV charger, or addition that will increase your power needs, it’s worth getting ahead of it.
Our licensed electricians provide panel upgrade services across the Greater Toronto Area. If you’re also considering an EV charger as part of your upgrade, take a look at our EV charger installation services to plan both projects together.
Contact SiteTech Electrical at (647) 939-3239 or request a free estimate to have your panel assessed.
