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Find Electrical wiring or panel upgrade pros in Sunnyvale

Avatar for DM ELECTRIC TX. LLC
DM ELECTRIC TX. LLC
5.0(
64
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Demetrio was wonderful. Polite, professional and timely. I would definitely recommend him for all electrical work."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+88

3 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for MR TROUBLESHOOTER LLC
MR TROUBLESHOOTER LLC
5.0(
12
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"This was the second house that I had electrical work done by this electric Company. They were very professionl did a geat job were very easy to work with and passed inspection with flying colors.The price was very reaasonable I highly recomend this company to any one."
Project Photos
Project Photos
7 neighbors recently requested a quote
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Avatar for ElectricMan
ElectricMan
4.8(
463
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2004

Emergency services offered

Warranties offered

"David was punctual, professional and did whatever necessary to resolve our electrical issues. He was sent the same day of discovering an oven wire wasn't 'hot' with new oven installation. He was able to properly diagnose and fix the faulty breaker for our oven wiring and an outlet issue that the first guy could not figure out. We will only use David going forward!"
BBB Accredited Member
ElectricMan Company Van
No job too big or too small!
Response time1 day
2 neighbors recently requested a quote
Recommended by92%of homeowners
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Avatar for HR Phoenix Electrical Services
HR Phoenix Electrical Services
4.6(
478
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Removed and replaced existing electrical panel (orig. from the 1950's), big job all day. They were great to work with, prompt. Very professional, cleaned up after themselves... I will hire them again for future electrical needs."
Thornbridge West
Interior work
Interior work
H.R. Phoenix Electrical Service, a family business
The crew

+8

Response time3 hrs
Response rate94%
3124 neighbors recently requested a quote
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Avatar for HR Phoenix Electrical Services
HR Phoenix Electrical Services
4.6(
428
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Paul was upfront with all of the work that they were going to do. He communicated very welll and the employee's are dry knowledgeable. They replaced the electrical panel and informed me what I need to do before they could start. All the work went as they said it would. I will use them in the future."
Kohler Generator
Response time1 day
Recommended by91%of homeowners
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Avatar for Gonelectrical L.L.C
Gonelectrical L.L.C
5.0(
18
)

Serving Sunnyvale, TX and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"This company did an amazing job upgrading our old 1966 electrical panel with a new panel and emergency shut off. We now have peace of mind that our system is safe and ready to go for years ahead. They were professional, personable, clean, timely and efficient. They took care of all permit and inspection tasks as well. We had power on same day. I will use this company again and have recommended to friends are family who use them as well. "
Modern Glow Makeover
Modern Glow Makeover
Modern Glow Makeover
kitchen remodel
Response time4 hrs
Response rate95%
14 neighbors recently requested a quote
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Avatar for McBride Electric
McBride Electric
5.0(
17
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 1961

Emergency services offered

Warranties offered

"Chris was a great service man. After a thorough inspection of my power panel, Chris found the problem of power surges and recommended I call ONCOR to fix the service to the house. One phase had burned through the rubber boot. ONCOR promptly came and reconnected the power properly."
Response time11 hrs
Response rate88%
2 neighbors recently requested a quote
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Avatar for Electric Masters, LLC
Electric Masters, LLC
5.0(
10
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"The best electricians. Great service and installation. The generator works perfectly and gives us peace of mind at home. Highly recommended."
Panel replacement
Panel replacement
Panel replacement
surge protector
surge protector

+18

Response time3 hrs
Response rate100%
42 neighbors recently requested a quote
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Showing 1-10 of 27
FAQs for electrical wiring or panel upgrade projects in Sunnyvale, TX

While homeowners with substantial electrical knowledge might technically attempt a subpanel installation, most local building departments require permits and inspections for this type of work. Professional electricians understand local code requirements, can obtain necessary permits, and ensure the installation meets safety standards. Given the significant safety risks associated with incorrect electrical work, most homeowners benefit from hiring a licensed professional.

A standard subpanel installation takes an average of four to eight hours. This timeframe may extend if you're installing multiple subpanels or adding specialized circuits like those for spa equipment. Factors such as difficult access points, complex wiring paths, or permit processing times can also affect the overall project duration.

Adding a subpanel doesn't directly reduce electricity consumption or lower your utility bills. A subpanel simply redistributes power from your main panel to additional circuits. However, organizing your electrical system more efficiently may help prevent overloaded circuits and the associated problems. For actual cost savings, consider energy-efficient appliances and lighting instead.

The appropriate subpanel size depends on your specific electrical requirements. Consider the number and type of devices you'll be powering, potential future needs, and the capacity of your main electrical panel. An electrician can perform a load calculation to determine the most suitable amperage rating for your situation, ensuring you have adequate power without overpaying for unnecessary capacity.

A main electrical panel connects directly to your utility's power supply and contains your home's primary service disconnect. It distributes electricity throughout your entire house. A subpanel, by contrast, receives power from the main panel and redistributes it to a specific area of your home. Think of the main panel as the primary distribution point and the subpanel as a secondary branch that extends your electrical system's reach.

While electrical upgrades aren't as immediately visible as kitchen or bathroom renovations, they can contribute to your home's functionality and safety. Prospective buyers often appreciate updated electrical systems that can accommodate modern power demands. A properly installed subpanel that provides additional capacity for workshops, home offices, or future expansions could be an attractive feature for certain buyers, though the direct impact on home value varies by market.

The Sunnyvale, TX homeowners’ guide to electrical wiring or panel upgrades

From average costs to expert advice, get all the answers you need to get your job done.

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