How much does a 200-amp panel upgrade cost in Phoenix?

The biggest price driver is whether the meter-main needs replacing along with the panel. We give you one fixed price after we see your equipment. National data from This Old House puts the cost to upgrade an electrical panel to 200 amp service between $1,300 and $3,000 for a typical 100-to-200-amp job. Phoenix jobs often run above the national figure because so many homes need a new exterior meter-main, not a simple breaker box swap. Before your estimated visit, pull your highest summer bill from July or August. Peak monthly kWh helps us size the service correctly.

How can I schedule a 200-amp panel upgrade in Phoenix?

Call Mr. Electric of Phoenix Metro or schedule an appointment online , and we'll book a service visit at a time you choose for your electrical panel upgrade. Your Phoenix electrician will inspect the panel and meter-main, run the load calculation, and hand you a written, upfront price by the job. Once you approve, we pull the permit, set the APS or SRP disconnect date, and complete most upgrades in one working day.

Do FPE and Zinsco panels need replacement in Phoenix?

Yes. We recommend replacing Federal Pacific Electric (FPE) Stab-Lok and Zinsco panels as soon as you find one, since both brands have breakers with documented failure-to-trip problems. The U.S. Consumer Product Safety Commission investigated FPE Stab-Lok breakers in the early 1980s, and later independent testing found high failure rates under overload. Zinsco breakers have a different flaw: the contacts arc against the aluminum bus bar until the breaker fuses to the bar and stops tripping. FPE panel replacement in Phoenix is a common job in homes built between the late 1950s and early 1980s, including many ranch homes in Maryvale and Sunnyslope. Zinsco panel replacement in Phoenix shows up in the same era. Check the label inside your panel door. If you see Federal Pacific, Stab-Lok, Zinsco, or Sylvania-Zinsco, call us before adding any new load.

How does the Phoenix heat affect my electrical panel?

High temperatures—especially prolonged periods of it—shorten breaker life and cause nuisance trips. Under UL 489, standard residential breakers are calibrated to trip at their rated current in a 104°F (40°C) environment, and Phoenix garages and west-facing walls run well past 104°F from June through September. In 2024, the National Weather Service recorded a record 70 days at or above 110°F in Phoenix. Thermal breakers read the extra heat as extra load, so a 20-amp circuit trips sooner on a 115°F afternoon. Daily heat cycles also expand and contract copper and aluminum lugs, which loosens connections over time. If your panel hangs on a west-facing exterior wall, ask us whether relocation makes sense during the upgrade. We torque every lug to the manufacturer's spec to cut down on heat-related loose connections.

What are the warning signs of an overloaded panel in a Phoenix home?

Act today if you find: Panel feels warm to the touch Burning smell near breakers Scorch mark around/on panel box Lights dim when the AC kicks on Crackling or buzzing near the panel Rust or discoloration on the enclosure Heavy use of extension cords There is no room on the panel Fuse box instead of breakers According to the Electrical Safety Foundation International (ESFI), home electrical fires total roughly 51,000 across the U.S. annually. Phoenix homes with 60-amp or 100-amp service—as well as older fuse boxes—tend to show warning signs first because relentless summer AC demand keeps them running near capacity for months. Open your panel door (avoid touching the inner deadfront cover) to check for scorch marks, rust streaks, or pencil-faded labels. Include a quick photo with your service request so your electrician comes prepared with the correct equipment.

What other electrical services does Mr. Electric offer in Phoenix?

Panel upgrades are one part of what our Phoenix crews handle every week. Many projects start at the panel and grow from there, so we often pair an upgrade with one of these services: Home generators with a transfer switch sized to your new panel Circuit breaker replacement for a single failed breaker Wiring updates for aluminum branch circuits and ungrounded outlets Commercial electrical panel upgrades for shops, offices, and retail spaces Emergency electrician service when a panel fails after hours Ask about these during your estimate visit. Combining work under one permit often saves you a return trip and a second inspection fee.

Is a sub-panel a cheaper option than a full service upgrade in Phoenix?

Adding a sub-panel increases physical breaker slots, not your home’s total electrical capacity. When your main panel is full, but the load calculation shows room to spare, a sub-panel is often the lower-cost fix. When the calculation shows your service is maxed out, extra breaker slots won't help. A 100-amp service at 240 volts carries a maximum of 24,000 watts, and every sub-panel shares that same limit. Phoenix casitas and detached shops are the most common places we add sub-panels. A detached building needs its own grounding electrode system under NEC 250.32. Plan for a ground rod and a four-wire feeder, and make sure the trench route between buildings shows up on your quote.

Do I need to upgrade my panel before replacing my AC in Phoenix?

The number that decides if you need to upgrade your panel is the maximum overcurrent protection (MOCP) rating on the new condenser's nameplate. Moving from a 3-ton to a 5-ton system, or adding a heat pump with electric backup heat strips, often pushes a 100-amp service past its limit. The U.S. Department of Energy's 2023 standards require at least 14.3 SEER2 for most new split AC systems sold in Arizona. A higher efficiency rating doesn't tell you the breaker size, though. We compare the new unit's MOCP against your panel, breaker, and wire gauge before the HVAC crew sets the equipment. Ask your HVAC contractor for the spec sheet while you're still getting quotes. Planning both jobs together keeps you from spending a July week without cooling while a panel permit clears.

Electrical Panel Upgrade Phoenix, AZ

200-Amp and 400-Amp Service Upgrades for Phoenix Homes

If your breakers trip when the AC and dryer run together, or your home still has a 100-amp panel from the 1970s or 1980s, your service is working harder than the original design allows. Phoenix summers make the problem worse. A 4-ton AC unit running 14 hours a day in July pulls steady current through breakers and lugs sitting in a garage well past 110°F. Heat and load together loosen connections, cook wire insulation, and shorten breaker life. Luckily, there's an easy way to resolve your panel woes: Call Mr. Electric of Phoenix Metro for an electrical panel upgrade in Phoenix, AZ. Our Phoenix electrician team sizes the new panel to your real load, pulls the City of Phoenix permit, and schedules the meter disconnect and reconnect.

200-Amp and 400-Amp Service Upgrades for Phoenix Homes

Mr. Electric electrician showing circuit breaker board to two people.

Residential
Commercial

Book Online

First Name*

Last Name*

Email*

Phone Number*

Street Address**

ZIP/Postal Code*

Yes! You can text me service reminders and other messages.

By checking this box, I agree to opt in to receive automated informational and promotional SMS and/or MMS messages from Mr. Electric, a Neighborly company, and its franchisees to the provided mobile number(s). Messages & data rates may apply. Message frequency varies. View Terms and Privacy Policy. Reply STOP to opt out of future messages. Reply HELP for help.

By entering your email address, you agree to receive emails about services, updates or promotions, and you agree to the Terms and Privacy Policy. You may unsubscribe at any time.

How We Plan and Complete Your Phoenix Panel Upgrade

Most Phoenix homes built before 1990 have 100-amp service, and some Maryvale ranch homes still run on 60 amps. Today's homes add central AC, a pool pump, and an EV. Our electrician runs a load calculation under NEC Article 220 before recommending a size. An EV charger 200-amp panel upgrade covers most homes with central AC and one Level 2 charger. Two AC units, a pool and spa, or two EVs usually need 400-amp service. Sizing once costs less than upgrading twice.
An electrical permit is required for every panel upgrade in Phoenix. We file before work starts, and ensure proper grounding, bonding, breaker and conductor sizing, and the 36-inch working clearance under NEC 110.26. Once the panel passes inspection, the city sends a clearance to your utility, and APS or SRP restores power. Unpermitted work surfaces during home sales and insurance claims. We also flag older issues in writing, such as double-tapped breakers or 1970s aluminum wiring.
Phoenix splits between APS and SRP, sometimes street by street. Your bill shows which one owns your meter; we handle the scheduling. Most homes use an exterior meter-main, so a 100 to 200-amp upgrade replaces the whole unit. Expect power to be off most of the day. Moving to 400 amps takes longer because the utility reviews the new service first. Add whole-home surge protection while the panel is open; monsoon lightning damages AC control boards and pool equipment. One written quote covers the panel, meter-main, surge device, and permit.

Mr. Electric electrician explaining an electrical panel upgrade to a customer.

Why Choose Mr. Electric for Your 200-Amp Panel Upgrade, Phoenix Homeowners?

Mr. Electric of Phoenix Metro has served homes and businesses since 1994, and our Phoenix Metro location is locally owned and operated. You deal with a local owner who answers for the work, backed by the training and standards of Neighborly, the world's largest home services company. We work under an Arizona Registrar of Contractors license. Our electricians show up in uniform, on time, in a marked service vehicle stocked with the breakers and fittings most panel jobs need. Fewer supply-house runs mean your power comes back on sooner.

Pricing works the same way on every job. We quote by the job, not the hour, and your written quote lists the panel, the meter-main, the permit, and any required code corrections before you sign. Every job carries the Neighborly Done Right Promise®: if the work isn't done right, we make it right.

Not every panel needs replacing, and we'll tell you when a smaller fix does the job. A single worn breaker or a loose neutral often calls for electrical panel repair instead. For a panel older than 25 years, an electrical safety inspection gives you a written condition report before you commit to a bigger project. Our electricians check for scorched bus bars, double-tapped breakers, corroded lugs, and aluminum wiring at the terminals.

Our crews run the same permit and utility process for every Paradise Valley electrical panel upgrade, and we serve Glendale, Peoria, Goodyear, Scottsdale, and Ahwatukee from the same Phoenix Metro shop. Call the Phoenix Metro office to confirm service at your address.

Frequently Asked Questions About Electrical Panel Upgrades: Phoenix, AZ

The biggest price driver is whether the meter-main needs replacing along with the panel. We give you one fixed price after we see your equipment. National data from This Old House puts the cost to upgrade an electrical panel to 200 amp service between $1,300 and $3,000 for a typical 100-to-200-amp job. Phoenix jobs often run above the national figure because so many homes need a new exterior meter-main, not a simple breaker box swap. Before your estimated visit, pull your highest summer bill from July or August. Peak monthly kWh helps us size the service correctly.
Yes. We recommend replacing Federal Pacific Electric (FPE) Stab-Lok and Zinsco panels as soon as you find one, since both brands have breakers with documented failure-to-trip problems. The U.S. Consumer Product Safety Commission investigated FPE Stab-Lok breakers in the early 1980s, and later independent testing found high failure rates under overload. Zinsco breakers have a different flaw: the contacts arc against the aluminum bus bar until the breaker fuses to the bar and stops tripping. FPE panel replacement in Phoenix is a common job in homes built between the late 1950s and early 1980s, including many ranch homes in Maryvale and Sunnyslope. Zinsco panel replacement in Phoenix shows up in the same era. Check the label inside your panel door. If you see Federal Pacific, Stab-Lok, Zinsco, or Sylvania-Zinsco, call us before adding any new load.
Act today if you find:
- Panel feels warm to the touch
- Burning smell near breakers
- Scorch mark around/on panel box
- Lights dim when the AC kicks on
- Crackling or buzzing near the panel
- Rust or discoloration on the enclosure
- Heavy use of extension cords
- There is no room on the panel
- Fuse box instead of breakers
According to the Electrical Safety Foundation International (ESFI), home electrical fires total roughly 51,000 across the U.S. annually. Phoenix homes with 60-amp or 100-amp service—as well as older fuse boxes—tend to show warning signs first because relentless summer AC demand keeps them running near capacity for months. Open your panel door (avoid touching the inner deadfront cover) to check for scorch marks, rust streaks, or pencil-faded labels. Include a quick photo with your service request so your electrician comes prepared with the correct equipment.
High temperatures—especially prolonged periods of it—shorten breaker life and cause nuisance trips. Under UL 489, standard residential breakers are calibrated to trip at their rated current in a 104°F (40°C) environment, and Phoenix garages and west-facing walls run well past 104°F from June through September. In 2024, the National Weather Service recorded a record 70 days at or above 110°F in Phoenix. Thermal breakers read the extra heat as extra load, so a 20-amp circuit trips sooner on a 115°F afternoon. Daily heat cycles also expand and contract copper and aluminum lugs, which loosens connections over time. If your panel hangs on a west-facing exterior wall, ask us whether relocation makes sense during the upgrade. We torque every lug to the manufacturer's spec to cut down on heat-related loose connections.
Panel upgrades are one part of what our Phoenix crews handle every week. Many projects start at the panel and grow from there, so we often pair an upgrade with one of these services:
- Home generators with a transfer switch sized to your new panel
- Circuit breaker replacement for a single failed breaker
- Wiring updates for aluminum branch circuits and ungrounded outlets
- Commercial electrical panel upgrades for shops, offices, and retail spaces
- Emergency electrician service when a panel fails after hours
Ask about these during your estimate visit. Combining work under one permit often saves you a return trip and a second inspection fee.
The number that decides if you need to upgrade your panel is the maximum overcurrent protection (MOCP) rating on the new condenser's nameplate. Moving from a 3-ton to a 5-ton system, or adding a heat pump with electric backup heat strips, often pushes a 100-amp service past its limit. The U.S. Department of Energy's 2023 standards require at least 14.3 SEER2 for most new split AC systems sold in Arizona. A higher efficiency rating doesn't tell you the breaker size, though. We compare the new unit's MOCP against your panel, breaker, and wire gauge before the HVAC crew sets the equipment. Ask your HVAC contractor for the spec sheet while you're still getting quotes. Planning both jobs together keeps you from spending a July week without cooling while a panel permit clears.
Adding a sub-panel increases physical breaker slots, not your home’s total electrical capacity. When your main panel is full, but the load calculation shows room to spare, a sub-panel is often the lower-cost fix. When the calculation shows your service is maxed out, extra breaker slots won't help. A 100-amp service at 240 volts carries a maximum of 24,000 watts, and every sub-panel shares that same limit. Phoenix casitas and detached shops are the most common places we add sub-panels. A detached building needs its own grounding electrode system under NEC 250.32. Plan for a ground rod and a four-wire feeder, and make sure the trench route between buildings shows up on your quote.
Call Mr. Electric of Phoenix Metro or schedule an appointment online, and we'll book a service visit at a time you choose for your electrical panel upgrade. Your Phoenix electrician will inspect the panel and meter-main, run the load calculation, and hand you a written, upfront price by the job. Once you approve, we pull the permit, set the APS or SRP disconnect date, and complete most upgrades in one working day.

Residential & Commercial Services

Residential
Commercial