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Verified Reviews for Generator Install pros in Johnsonville, SC

*The Angi rating for Generator Install companies in Johnsonville, SC 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 Johnsonville, SC 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 June 05, 2026

Find Generator install pros in Johnsonville

Avatar for Mister Sparky of Florence
Mister Sparky of Florence
5.0(
16
)
Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair+4 more

Serving Johnsonville, SC and surrounding areas

Approved

Super Service Award Winner

In business since 2004

Free estimates

Emergency services offered

"Daniel, their electrician has helped us before. He arrived promptly and after discussing with us our issues went directly to work addressing our problem. He successfully completed his work to our satisfaction, discussed the repairs , and was on his way to his next appointment in a very timely manner. We are extremely satisfied with his work in particular and Mr Sparky in general in addressing our needs. Reliability and competence seem to be their hallmark."
Install - Under Cabinet Lighting
Install - Outdoor Outlets
Install - Outlet Replacements
Install - Outlet
Install - Door Bell

+5

12 neighbors recently requested a quote
Recommended by31%of homeowners
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Avatar for Smith Electrical And Telecommunication Services LLC
Smith Electrical And Telecommunication Services LLC
5.0(
4
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Repair - For Business+1 more

Serving Johnsonville, SC and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"Got the job done quick, and for a good price!"
Smith Electrical
53 neighbors recently requested a quote
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Avatar for Swift Services Heating & Cooling, LLC
Swift Services Heating & Cooling, LLC
4.0(
64
)
Fixed Generator - InstallPortable Generator - RepairFixed Generator - Repair+1 more

Serving Johnsonville, SC and surrounding areas

Approved (Corporate)

In business since 1997

Free estimates

Emergency services offered

"Swift is an efficient and professional service company. They installed my new air conditioner quickly and with no problems. They were on time, and the installers were friendly and courteous. I would recommend them to everyone. I would not use anyone else for my AC service. They are the best!"
Response time10 hrs
52 neighbors recently requested a quote
Recommended by91%of homeowners
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Avatar for Rabon Brothers Services, LLC
Rabon Brothers Services, LLC
5.0(
3
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Johnsonville, SC and surrounding areas

In business since 2023

Free estimates

"Very professional, showed up on time, performed the generator service and was a pleasure to work with. You wonâ t go wrong hiring the Rabon Brothers!"
Response time4 days
Recommended by100%of homeowners
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Avatar for B1 Electric, LLC
B1 Electric, LLC
4.1(
30
)
Fixed Generator - Install

Serving Johnsonville, SC and surrounding areas

In business since 2016

Free estimates

Small jobs welcome

"Perfectionists, meticulous, cordial, and punctual!!!! Everything installed was done well. One of the installers even corrected electrical mistakes caused by our builder. Intend to hire them again for additional projects and will recommend to other residents in this community."
200A Service Upgrade
200A underground Service with disconnect
Kitchen lighting Project
Outdoor lighting and outdoor 100A electric service
Exterior Ceiling Fan with Leaf Design

+4

Response time4 hrs
Recommended by96%of homeowners
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Showing 1-10 of 23
Generator Install questions, answered by experts

The average cost to install a home generator is $5,200, but total costs can range from $500 to $18,000 or more. The final price depends on several factors, including the generator's size, type, brand, fuel source, and the cost of labor and assembly. The generator's size is the most significant cost factor, as units that can power larger homes with higher energy demands cost more.

Cost breakdowns by generator type are typically as follows:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500–$2,000

  • Partial-Home Generators (9kW–20kW): $2,000–$6,500

  • Whole-House Generators (22kW–48kW): $5,000–$18,000

To ensure you get the right size unit for your needs without overpaying, consider hiring an electrician to calculate the electrical load of your essential appliances. It is also recommended to get at least three quotes from qualified installers to find the best fit for your budget.

While standby generators provide essential backup power, they can fail when you need them most due to lack of maintenance, fuel supply issues, dead batteries, electrical problems, or improper installation. To avoid costly failures, professional installation and regular maintenance are crucial. Licensed technicians ensure safety, uphold warranty requirements, comply with regulations, and provide expert servicing.

While the rating will tell you how many watts the refrigerator needs at the peak of its cycle, it requires additional wattage to start. At the bare minimum, you’ll need a 1,500-watt generator to get the fridge up and running after a blackout. A 2,000-watt generator should be sufficient for most home refrigerators.

It might seem counterintuitive, but installing a generator transfer switch will save you money in the long run. While you’ll have to pay between $400 and $2,500 to have the transfer switch installed, you’ll recoup that amount later on when you don’t have to pay for expensive repairs to your appliances, devices, and electrical system that may have burned out, overloaded, or stopped working due to a sudden loss of power or an incorrect hook up of a generator to your home. 

Homeowners can often access federal tax credits, such as the Investment Tax Credit (ITC), which covers a percentage of installation costs. Many states and utilities offer additional rebates, grants, or performance-based incentives. These programs can significantly lower your upfront investment. Check the Database of State Incentives for Renewables and Efficiency (DSIRE) or contact your local energy office for current offers.

The Johnsonville, SC 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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