Flickering lights, hot breakers, an aging panel, or planning to add an EV charger or hot tub? Here's how to tell if it's time for a panel upgrade in your Utah home, and how we verify your home can actually handle the new load.
Your electrical panel is the heart of your home's power system. Every light, outlet, appliance, EV charger, and HVAC unit pulls through it. In Utah homes built before the 2000s, the panel was sized for a very different lifestyle, no induction stoves, no Tesla in the garage, no hot tub on the back patio, and certainly no whole-home heat pumps. That's where most of our panel-upgrade calls start.
Here's what we look at when a homeowner asks whether a panel upgrade is the right move.
Signs your panel is telling you it's time for an upgrade
You don't need a thermal camera to spot most warning signs. Pay attention to these:
- ●Breakers that trip repeatedly on the same circuit, especially with normal use
- ●Lights that dim or flicker when large appliances kick on
- ●A warm, buzzing, or scorched-smelling panel cover
- ●Half-melted or discolored breakers when you open the door
- ●A panel that's full, no empty slots left for new circuits
- ●Federal Pacific, Zinsco, or Pushmatic branding on the door (known problematic brands)
- ●Two-pronged outlets throughout the house, indicating ungrounded wiring
How old is too old?
Most residential panels are designed for a 25 to 40 year service life. If your Utah home was built before 1990 and still has its original panel, you're likely on borrowed time. Panels from the 1960s and 1970s, especially Federal Pacific Stab-Lok and Zinsco units, are widely documented to fail to trip during overcurrent events. That's a fire risk, not a maintenance question.
Homes built in the 1990s and early 2000s often have 100-amp panels that were perfectly sized for the time. The problem is that today's loads, EV chargers, induction cooktops, mini-splits, hot tubs, easily blow past 100 amps of available service.
Panel types we see most often in Utah
Across Salt Lake, Tooele, and Utah counties, here's the rough breakdown:
- ●Federal Pacific Stab-Lok, common in 1960s–1970s homes; we recommend replacement
- ●Zinsco / GTE Sylvania, same era, same recommendation
- ●Pushmatic, older but generally safer; usually upgraded for capacity, not safety
- ●Square D QO / Homeline, modern, reliable; usually upgraded for capacity only
- ●Eaton CH / BR, common in newer builds; reliable and easy to expand
- ●Siemens, common in 2000s+ builds; solid choice
We always run a load calculation first
Before we quote a panel upgrade, we run a formal load calculation per NEC Article 220. That means we account for the square footage of your home, the existing fixed appliances, the dryer and range, HVAC, and anything new you're planning, like an EV charger or hot tub. We add it all up to determine whether your current service is actually undersized or whether the real issue is something else, like a bad breaker or a shared neutral problem.
Sometimes the answer is, "You don't need a 200-amp upgrade, you just need a properly sized circuit for the new load." Other times the answer is, "Your panel is fine, but your meter base needs to be replaced first." An honest load calc keeps you from spending thousands on a fix you don't need.
What a typical Utah panel upgrade looks like
For most homes we work in, a panel upgrade involves coordinating with Rocky Mountain Power to disconnect service, replacing the meter base and main service panel, pulling new grounding electrodes if needed, and bringing the entire panel up to current NEC code (AFCI/GFCI protection, proper bonding, labeled circuits).
We handle the permit, the utility coordination, and the inspection. Most upgrades are a single-day job with power restored that same evening.
Thinking about an upgrade? Call us before you buy anything
If you're planning a hot tub, EV charger, addition, induction stove, or whole-home backup generator, call us before you put money down. A 15-minute load conversation upfront can save you from buying a charger your panel can't support or a hot tub your circuit can't handle. We serve Salt Lake, Tooele, and Utah counties, and we'd rather under-promise and over-deliver than the other way around.