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Electrical Panel Replacement & Repair in Nampa, ID

When your panel keeps tripping, feels warm, or cannot keep up with a shop, well pump, or new appliances, it is time for a look. A-1 Heating, Air Conditioning & Electric replaces and repairs electrical panels for Nampa homeowners across Canyon County, and has served the Treasure Valley since 1956. Our licensed electricians handle failed breakers, aging fuse boxes, and full 100-amp to 200-amp upgrades, pull the required permit, and coordinate the shutoff with Idaho Power.

Is your Nampa panel overloaded, aging, or still on fuses?

What your electrical panel does

Your electrical panel is the hub that takes power from Idaho Power and divides it into the branch circuits feeding your home and any outbuildings. Each breaker is a safety device that cuts power when a circuit is overloaded, so a worn or undersized panel is a safety problem, not just an inconvenience. In and around Nampa, many homes sit on larger or semi-rural lots with a detached shop, a well pump, or an irrigation pump drawing from the same service. A 100-amp panel that was fine for the house alone runs out of room fast once a welder, an air compressor, or an EV charger gets added out in the shop.

Signs your Nampa home needs electrical panel repair or replacement

The same warning signs show up in Nampa homes, and most of them mean the panel needs attention soon. Watch for these:
  • A 100-amp panel or fuse box feeding the house plus a detached shop or outbuilding
  • Breakers that trip when the well pump, AC, or a shop tool starts up
  • Federal Pacific or Zinsco panels, common in older Canyon County homes and a known fire risk
  • A panel that feels warm, buzzes, or shows scorching or a burning smell
  • Lights across the property that dim when the well or irrigation pump cycles
  • No capacity left for a shop subpanel, EV charger, or hot tub

A burning smell or visible scorching is an emergency. Shut off what you safely can and call A-1 right away.

When to upgrade from 100-amp to 200-amp service in Nampa

A 200-amp upgrade makes sense once a property’s demand outgrows the original panel. Nampa has a large share of established homes and rural or semi-rural lots where a detached shop, a well pump, and now an EV charger all pull from a panel that was sized decades ago. A 200-amp service roughly doubles the capacity and leaves room for future circuits. Idaho requires an electrical permit for a panel change, issued through the Idaho Division of Building Safety and coordinated with local inspection, and A-1 pulls and handles it for you.

What does a 100A to 200A panel upgrade cost?

In Nampa, most 100-amp to 200-amp upgrades cost $2,500 to $5,000, depending on the difficulty of the job. The final price comes down to how the service is run, the meter base condition, and whether the panel has to move, which is common on older Nampa homes and properties with outbuildings. Two things are worth knowing up front. First, every upgrade requires a permit, and A-1 Heating, Air Conditioning & Electric pulls and handles all of it through Canyon County. Second, the realistic timeline is about 10 business days, because it depends on Idaho Power coordinating the disconnect and reconnect. These are typical ranges, not a quote, and every estimate is free.

Why Nampa homeowners choose A-1 for electrical panel work

A-1 Heating, Air Conditioning & Electric is a locally owned, licensed, bonded, and insured Idaho contractor that has operated since 1956, a 15-time Dave Lennox Award winner and 2025 Top 25 Contractor in North America. Every panel upgrade is done by licensed electricians, permitted, and inspected. We are BBB A+ rated, an Angie’s List Super Service Award winner, Google top-rated, and active in the community, supporting the Boys and Girls Club, Boise State Broncos programs, and local youth teams. Seven decades of dependable, permitted work is what Nampa customers point to when they recommend us.

Why you should never DIY electrical panel work

Panel work is not a DIY job, and that goes double on a property with a shop or a well. The service lugs ahead of the main breaker stay energized even with the main off, until Idaho Power disconnects them, so a mistake can be fatal. Tying a subpanel or a well circuit into an already overloaded panel is a common cause of failed inspections and insurance headaches. Idaho law requires a licensed electrician and a permit for panel changes, and A-1 handles both.

Ready for a safer, higher-capacity panel in Nampa?

Electrical panel service area

A-1 Heating, Air Conditioning & Electric provides electrical panel replacement and repair across Nampa and Canyon County, including Caldwell, Middleton, and the surrounding communities, plus Meridian, Boise, and the wider Treasure Valley. We are also licensed in Oregon and serve the Ontario area along the eastern border.
Upgrade Electric Panel in Meridian, ID

Frequently Asked Questions

In Nampa, most 100-amp to 200-amp panel upgrades cost $2,500 to $5,000, depending on how difficult the job is. Every upgrade needs a permit, which A-1 pulls and handles, and the timeline is usually about 10 business days because it depends on Idaho Power. Every estimate is free.
Yes. Idaho requires an electrical permit for any panel replacement or service upgrade, issued through the Idaho Division of Building Safety and inspected locally in Canyon County. A-1 pulls the permit, does the work with licensed electricians, and coordinates the inspection, so you do not have to manage any of it.
The panel swap itself takes about a day, but plan on roughly 10 business days start to finish. The schedule hinges on Idaho Power coordinating the power disconnect and reconnect, plus permit and inspection timing, not just crew availability. A-1 keeps you posted at each step.
Yes. A detached shop, garage, or barn usually needs its own subpanel fed from the main service. A-1 checks whether your current panel has the capacity, upgrades it to 200-amp if needed, then runs a properly sized, permitted circuit out to the building for tools, a welder, or an EV charger.
Dimming when the well pump kicks on usually means the panel or service is undersized for the combined load, or a circuit is overloaded. On many Nampa properties the pump, house, and shop all pull from one aging panel. A-1 can measure the load and recommend a 200-amp upgrade if the numbers call for it.
Yes. A-1 Heating, Air Conditioning & Electric regularly upgrades Nampa panels to handle detached shops, Level 2 EV chargers, hot tubs, and heat pumps. A licensed electrician checks your available capacity first, recommends a 200-amp upgrade if you need it, then installs the dedicated circuits, permitted and inspected.
Most modern breaker panels last 25 to 40 years. Older fuse boxes and discontinued brands like Federal Pacific should be replaced sooner, regardless of age, because they are known safety risks. If your panel is original to a Nampa home built before the mid-1990s, it is worth having A-1 take a look.
Both. A single failed breaker, a loose connection, or a corroded lug can often be repaired. When a panel is undersized, damaged, or a known fire-risk brand, replacement is the safer call. A licensed A-1 electrician inspects it and tells you honestly which one you actually need.