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Verified Reviews for Generator Install pros in Alton, MO

*The Angi rating for Generator Install companies in Alton, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Alton, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on July 29, 2022

Top-Rated Generator install pros in Alton - Updated Nov 2026

Avatar for A+ Constructors LLC
A+ Constructors LLC
New to Angi
Fixed Generator - InstallPortable Generator - Install

Serving Alton, MO and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

With years of experience serving the area, we are your solution for all your construction needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship so that the next time service is needed there will be no question on who to call. Check out our 5 star reviews from happy customers! Call us today so we can discuss your needs and make a plan that fits your budget. Satisfaction guaranteed! \n \n

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Avatar for Barker Electric Company, LLC
Barker Electric Company, LLC
5.0(
10
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Alton, MO and surrounding areas

In business since 2020

Free estimates

Warranties offered

"Barker Electric was fantastic. Brian and his crew installed all the electric in my new build, from placing floor outlet receptacles and conduit prior to foundation pour, to planning the inside and outside lights and outlets, to installing the light above my sink. Brian and his crew were professional, punctual, and completed all the tasks they said they would! I highly recommend Barker Electric! I will hire them again !"
MDP
Conduit and panels
Conduit rack
Gutters and panels
MDP

+1

Response time2 days
Recommended by10%of homeowners
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Avatar for Wigton Electric
Wigton Electric
4.9(
18
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Alton, MO and surrounding areas

In business since 2021

Free estimates

Small jobs welcome

"I have had very good experiences with Wigton electric. They do great professional work."
Response time6 hrs
Response rate86%
Recommended by94%of homeowners
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Generator Install FAQs, answered by experts

Costs depend on generator type, labor, and additional wiring or transfer switch requirements.

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

DIY is possible for basic setups. Professional installation ensures safe and proper electrical connections.

Generators run on a variety of fuel types, ranging from natural gas to solar power. Keep in mind that fuel costs varying by type:

  • Natural gas: $2,000–$21,000 per year 

  • Liquid propane: $2,000–$21,000 per year

  • Diesel: $3,000–$20,000 per year

  • Gasoline: $500–$3,000 per year

  • Solar generator: $2,000–$25,000 per unit

  • Battery backup: $10,000–$25,000 per unit

A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the total wattage of the devices that you’d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.

The Alton, MO homeowners’ guide to generator installs

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

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