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Electrical wiring or panel upgrade pros in Troy

Designed Space
1716 Miland Street
5.00(
4
)
Approved Pro
Designed Space
1716 Miland Street
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
17 years of experience

With over 10 years experience this business, Designed Space is your industry expert in Wood River, Illinois and the surrounding areas. We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. You can trust that we will treat your home as we would treat our own. Give us a call today we look forward to working with you!

"John is a very knowledgeable in many areas; electrical carpentry, plumbing. He is reliable and friendly."

Marie P on March 2020

With over 10 years experience this business, Designed Space is your industry expert in Wood River, Illinois and the surrounding areas. We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. You can trust that we will treat your home as we would treat our own. Give us a call today we look forward to working with you!

"John is a very knowledgeable in many areas; electrical carpentry, plumbing. He is reliable and friendly."

Marie P on March 2020


Avatar for Jarvis Electric
Jarvis Electric
118 Old Collinsville Road
4.84(
102
)
Approved Pro
Jarvis Electric
118 Old Collinsville Road
4.84(
102
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
12 years of experience

Jarvis Electrical Contracting, Inc. has over a decade of experience with new home electric services, commercial building electric services, installation of upgrades and maintenance, industrial applications, solar energy installations and lighting upgrade applications. We are dedicated to providing you with all electrical solutions to make your home comfortable, efficient, and updated. We have the skills to complete unique installations and troubleshoot the most complex situation. We are a small company that allows competitive pricing with outstanding results. W e will focus on all customers unique needs one job at a time. We want to build lasting relationships with trust and confidence so that Jarvis Electrical Contracting, Inc . will be your electrical contractor for life.

"Na"

Phyllis S on April 2025

Jarvis Electrical Contracting, Inc. has over a decade of experience with new home electric services, commercial building electric services, installation of upgrades and maintenance, industrial applications, solar energy installations and lighting upgrade applications. We are dedicated to providing you with all electrical solutions to make your home comfortable, efficient, and updated. We have the skills to complete unique installations and troubleshoot the most complex situation. We are a small company that allows competitive pricing with outstanding results. W e will focus on all customers unique needs one job at a time. We want to build lasting relationships with trust and confidence so that Jarvis Electrical Contracting, Inc . will be your electrical contractor for life.

"Na"

Phyllis S on April 2025


Avatar for MEI Electric, Inc.
MEI Electric, Inc.
PO Box 501
5.00(
3
)
Approved Pro
MEI Electric, Inc.
PO Box 501
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
7 years of experience

Welcome to MEI Electric, Inc.! We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you! MEI Electric is committed to exceeding your expectations and is uniquely qualified to provide you unsurpassed service and attention to detail. We follow strict guidelines to ensure the quality & safety of our work. We provide service & repair, systems troubleshooting, and new installation for commercial, light industrial & residential customers. From small jobs to large-scale projects, MEI Electric gives every customer the quality and service they expect and deserve. We are dedicated to making sure each job is done correctly, on time, and at a fair price.Our primary mission is to provide quality services at reasonable prices.

"If you want to hire an electrician you can trust, Tim is the guy to call! Amazing!"

Roger S on August 2019

Welcome to MEI Electric, Inc.! We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you! MEI Electric is committed to exceeding your expectations and is uniquely qualified to provide you unsurpassed service and attention to detail. We follow strict guidelines to ensure the quality & safety of our work. We provide service & repair, systems troubleshooting, and new installation for commercial, light industrial & residential customers. From small jobs to large-scale projects, MEI Electric gives every customer the quality and service they expect and deserve. We are dedicated to making sure each job is done correctly, on time, and at a fair price.Our primary mission is to provide quality services at reasonable prices.

"If you want to hire an electrician you can trust, Tim is the guy to call! Amazing!"

Roger S on August 2019


Avatar for Hoffmann Brothers
Hoffmann Brothers
1643 Tower Grove Avenue
4.58(
24
)
Approved Pro
Hoffmann Brothers
1643 Tower Grove Avenue
4.58(
24
)
Approved Pro
Customers say: Quick response
39 local quotes requested
45 years of experience

Hoffmann Brothers provides top-quality electrical services for residential and commercial customers across the St. Louis area. From emergency repairs to upgrades that enhance convenience and efficiency, our licensed and highly trained electricians handle it all. Whether you need new lighting, ceiling fans, USB outlets, service panel upgrades, generators, exhaust fans, or access controls, we ensure safe, professional installations and repairs. Trust Hoffmann Brothers for reliable, expert electrical solutions that keep your home or business powered and protected.

"They do good work, but more $ than I anticipated."

Laurie K on March 2024

Hoffmann Brothers provides top-quality electrical services for residential and commercial customers across the St. Louis area. From emergency repairs to upgrades that enhance convenience and efficiency, our licensed and highly trained electricians handle it all. Whether you need new lighting, ceiling fans, USB outlets, service panel upgrades, generators, exhaust fans, or access controls, we ensure safe, professional installations and repairs. Trust Hoffmann Brothers for reliable, expert electrical solutions that keep your home or business powered and protected.

"They do good work, but more $ than I anticipated."

Laurie K on March 2024


Avatar for Tiger Services, LLC
Tiger Services, LLC
1902 Vandalia Street, Suite 100
4.08(
168
)
Approved Pro
Tiger Services, LLC
1902 Vandalia Street, Suite 100
4.08(
168
)
Approved Pro
Customers say: Quality work
139 local quotes requested
32 years of experience

Tiger Plumbing, Heating, Air Conditioning, & Electrical Services is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. Please give us a call today!

"Broke electrical line to yard light. Said they are not responsible. Also, someone there said to call back to arrange to get it fixed. When I did, was told they do not do electrical work in Champaign. My wife had informed the technician of underground wire before work began. In addition, can not close closet door because of Jack hammering that was done. As a result, dust was all throughout the house."

Uzee P on March 2025

Tiger Plumbing, Heating, Air Conditioning, & Electrical Services is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. Please give us a call today!

"Broke electrical line to yard light. Said they are not responsible. Also, someone there said to call back to arrange to get it fixed. When I did, was told they do not do electrical work in Champaign. My wife had informed the technician of underground wire before work began. In addition, can not close closet door because of Jack hammering that was done. As a result, dust was all throughout the house."

Uzee P on March 2025


Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
1656 HEADLAND DR
New on HomeAdvisorNew on Angi
Approved Pro
Tri-State Water, Power & Air
1656 HEADLAND DR
New on AngiNew on HomeAdvisor
Approved Pro
364 local quotes requested
33 years of experience

We are the experts in the field of Whole Home Generator Sales and Installation, with over 20 years of experience in the game. We provide turn-key installation by licensed professionals - 24 hour emergency service - Remote Monitoring - Long term maintenance and service by factory trained technicians.

We are the experts in the field of Whole Home Generator Sales and Installation, with over 20 years of experience in the game. We provide turn-key installation by licensed professionals - 24 hour emergency service - Remote Monitoring - Long term maintenance and service by factory trained technicians.


Avatar for Jarvis Electric Inc
Jarvis Electric Inc
1604 N Illinois St
4.47(
19
)
Approved Pro
Jarvis Electric Inc
1604 N Illinois St
4.47(
19
)
Approved Pro
Customers say: Quality work
247 local quotes requested
12 years of experience

Jarvis electric is a local family owned and operated business. We take pride in performing quality electric work at a reasonable price. We have over twenty years of experience in the electrical field. Honesty and integrity are two qualities we believe help to build a successful business. At Jarvis Electric we are building relationships, one job at a time. Update: We are currently not servicing East St. Louis.

"Jarvis Electric did all of the electric for our new build and has come back to add additional items that we have added since we have been in the home. Super responsive and quick to complete all requested work. Top notch service. Extremely reasonable price. I appreciate that they always keep a clean worksite and never leave a mess, even if coming back the next day to finish a job. I have not only used them for my home but referred them to my mom and dad as well when they needed work done. Great company with great people and really easy to deal with. They truly went above and beyond."

Keith J on June 2023

Jarvis electric is a local family owned and operated business. We take pride in performing quality electric work at a reasonable price. We have over twenty years of experience in the electrical field. Honesty and integrity are two qualities we believe help to build a successful business. At Jarvis Electric we are building relationships, one job at a time. Update: We are currently not servicing East St. Louis.

"Jarvis Electric did all of the electric for our new build and has come back to add additional items that we have added since we have been in the home. Super responsive and quick to complete all requested work. Top notch service. Extremely reasonable price. I appreciate that they always keep a clean worksite and never leave a mess, even if coming back the next day to finish a job. I have not only used them for my home but referred them to my mom and dad as well when they needed work done. Great company with great people and really easy to deal with. They truly went above and beyond."

Keith J on June 2023


Avatar for CD Electric
CD Electric
5.00(
6
)
Approved Pro
CD Electric
5.00(
6
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
230 local quotes requested

CD Electric is a local, family-owned electrcial contractor that specializes in service, repair, and new construction in the residential and commercial setting. We go above and beyond with all our jobs because that’s our duty to our customer. Our aim is to give customers consistent and reliable service that they can trust. From the time we answer the phone to the completion of the job we are committing to give our customers the best experience.

"Showed up and finished the job no issues."

Bretton M on April 2025

CD Electric is a local, family-owned electrcial contractor that specializes in service, repair, and new construction in the residential and commercial setting. We go above and beyond with all our jobs because that’s our duty to our customer. Our aim is to give customers consistent and reliable service that they can trust. From the time we answer the phone to the completion of the job we are committing to give our customers the best experience.

"Showed up and finished the job no issues."

Bretton M on April 2025


Avatar for Reinhold Electric Inc
Reinhold Electric Inc
2511 Lemay Ferry Rd
4.58(
312
)
Approved Pro
Reinhold Electric Inc
2511 Lemay Ferry Rd
4.58(
312
)
Approved Pro
Customers say: Quality work
970 local quotes requested
49 years of experience

We started in 1976, to provide quality and assurance to always satisfy the customer. We guarantee all of our work, and our employees deliver this proud craftsmanship. We also offer 24 hour emergency service. With a live answering service to take your calls, we have owners and electricians that are on standby around the clock.

"Quick response and job well done within a couple days."

Sharon A on January 2025

We started in 1976, to provide quality and assurance to always satisfy the customer. We guarantee all of our work, and our employees deliver this proud craftsmanship. We also offer 24 hour emergency service. With a live answering service to take your calls, we have owners and electricians that are on standby around the clock.

"Quick response and job well done within a couple days."

Sharon A on January 2025


Avatar for The Steven Brand
The Steven Brand
3 Renee Drive
4.72(
29
)
Approved Pro
The Steven Brand
3 Renee Drive
4.72(
29
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
2974 local quotes requested

We offer a variety of handyman services. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality of work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!

"The job was done very well."

Ron B on May 2025

We offer a variety of handyman services. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality of work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!

"The job was done very well."

Ron B on May 2025

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Electrical wiring or panel upgrades FAQs

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.

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