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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
12 neighbors recently requested a quote
Avatar for Rogers Heating And Cooling
Rogers Heating And Cooling
4.6(
16
)
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%
71 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

We are a locally owned and operated company proudly serving Pittsylvania and surrounding counties. Red Clay Mechanical provides dependable services with a focus on honest communication, quality workmanship, and reliable service. Whether it is repairs, replacements, maintenance, or new installations, we treat every customer and home with respect and care.

Mounted 75" TV
Handyman Projects
Handyman Projects
Handyman Projects
Handyman Projects

+8

4 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 Main Street Solar
Main Street Solar
5.0(
6
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Gretna, VA and surrounding areas

In business since 2008

Free estimates

Credit card accepted

"Andrew and his company did an amazing job with our solar system install.  They met with us, explained our options, and delivered exactly the system we were looking for.  He was always prompt, courteous, and professional.  The system looks great on our home.  The install is very clean(which was one of my wife's big concerns).  The attention to detail that they paid to our project was amazing.  They went above and beyond what was required.
I can't say yet how much electricity our system will generate since it was just installed.
I will definitely call Andrew again when I am ready to expand our system further or add Solar water heating for our pool.

"
Professional service
Clean Installations!
Built for a life time!
Recommended by100%of homeowners
Central Virginia Electrical Services
5.0(
3
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Gretna, VA and surrounding areas

In business since 2017

Free estimates

Emergency services offered

With years of experience serving the area, we are your solution for all your electrical 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!

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

Showing 1-10 of 15
Generator Install questions, answered by experts

Generators are usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

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. 

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. 

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

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.