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Best generator install pros near Gretna, VA

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

Avatar for Holistiq Building Systems and Services LLC
Holistiq Building Systems and Services LLC
5.0(
8
)
Fixed Generator - Install

Serving Gretna, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Credit card accepted

"I would like to recommend Joshua Smith as a Tesla installer and overall electrician. He did a great job for my wife and I on the installation of our powerwall 3 and car chargers within our garages as well as trouble shooting some other electrical problems at our new home at Smith Mountain Lake. Additionally, he answers phone calls and shows up on time. Again, we highly recommend Joshua."
Response time5 hrs
8 neighbors recently requested a quote
Avatar for Rogers Heating And Cooling
Rogers Heating And Cooling
4.6(
17
)
Fixed Generator - InstallPortable Generator - Install

Serving Gretna, VA and surrounding areas

Approved

Super Service Award Winner

In business since 1996

Free estimates

Emergency services offered

"Yes,Roger Heating and Cooling did a excellent job.Not only did they install new heat pump and new furnace,.Men were courtesy and polite,showed respect for my home by wearing covers over their shoes.They explain the process of what they had to due.They answered any questions I had about installation. I had no idea that the process would be so smooth. I truly appreciate this company, from first day that representative came out. Too look at what need to be done to replace my systems. Thank them for email follow-up until day came to installation, and email after job was completed. It only took 4 hours for installation.I recommended this company too all my friends and family.Thank you so much too Roger Heating and Air.I would rate this company with 1,000 percent. As the completed of job they cleaned up their mess inside and outside."
Heat Pump Change Out
The old oil furnace :-(
Heat Pump Change Out
The new gas furnace! :-)
Heat Pump Change Out

+6

Response time1 day
Response rate100%
72 neighbors recently requested a quote
Avatar for Red Clay Mechanical LLC
Red Clay Mechanical LLC
5.0(
3
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Gretna, VA and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

"I had an excellent experience working with this company from start to finish. The team was professional, responsive, and truly cared about providing quality service. They communicated clearly throughout the entire process and made everything stress-free and easy to understand. What stood out most was their attention to detail and dedication to customer satisfaction. It’s hard to find businesses these days that genuinely go above and beyond, but this company absolutely did. The work was completed on time, exceeded my expectations, and the quality was outstanding! I highly recommend this company to anyone looking for reliable, honest, and professional service. I will definitely be using them again in the future!"
Mounted 75" TV
Handyman Projects
Handyman Projects
Handyman Projects
Handyman Projects

+8

5 neighbors recently requested a quote
Wynn's Electric, LLC
4.9(
6
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Gretna, VA and surrounding areas

In business since 2021

Free estimates

Credit card accepted

"Kenneth Wynn came to install a generator transfer switch box inside my house and a plug for outside. He was very professional and was training two younger guys who were very nice and courteous. I was thankful that the Lord had put me in contact with somebody that I could trust! I would definitely call him again for any electrical work that I might need in the future."
Response time10 hrs
Recommended by100%of homeowners
Avatar for Jordan Home Maintenance
Jordan Home Maintenance
5.0(
2
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Gretna, VA and surrounding areas

In business since 1993

Free estimates

Emergency services offered

"Barry mows and blows our lawn about weekly.  On occasion I have asked him to plant a few things, remove some walkway bricks to the basement door area.  He is always cheerful and willing to help.  He has won the business of several of my neighbors.
"
Recommended by100%of homeowners
Avatar for The Home Depot - Generators
The Home Depot - Generators
2.5(
1
)
Fixed Generator - Install

Serving Gretna, VA and surrounding areas

In business since 2003

Free estimates

Small jobs welcome

Today, we're proud to be the world's largest home improvement retailer. In 2,300 stores across North America, we aspire to excel in service – to our customers, associates, communities and shareholders. That's what leadership means to us. That's The Home Depot difference.

Generators
Generators
Generators
Generator
Generators

+5

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Generator Install FAQs, answered by experts

Yes. You can connect your home back-up battery to a generator with its designated charger. Be sure that the output of the generator matches the input requirements for the battery for best results.

Generally, you’ll want to keep between 60 and 70 feet between the generator and the transfer switch. There are a few reasons for this, including:

  • The distance reduces the noise coming from the generator into your home.

  • It increases efficiency because you won’t have a voltage drop from this short of a distance.

  • Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. 

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.

Yes, in most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home models. Because these installations involve significant alterations to your home's electrical system and produce exhaust fumes, local governments often require a permit or inspection for safety purposes. A generator permit typically costs between $50 and $250, depending on your location. Your electrician or certified installer can usually handle the permitting process for you, but you will be responsible for the cost. It's a good practice to confirm with your installer that they will pull all necessary permits before work begins.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

The Gretna, VA homeowners’ guide to generator installs

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