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Avatar for Buddy Electric
Buddy Electric
5.0(
6
)
Fixed Generator - Install

Serving Radford, VA and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

"From the contact call to Ben to the work the done by Awan, the service work call couldn't have gone better. A promised arrival time to do my repair was right on schedule. Awan was professional in every way giving me the confidence that his work would be first rate and it was ***** Buddy Electric will be my go to company for any Electrical Service work that I may need help with in the future."
Ballroom
Main Hall
Main Chandelier
Sammy!
Buddy Crew at Work

+5

Response time10 hrs
Response rate97%
29 neighbors recently requested a quote
Frank Blankenship Properties & Electrical, LLC
4.5(
27
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Radford, VA and surrounding areas

Approved

In business since 2016

Credit card accepted

Offers commercial services

Frank Blankenship Properties & Electrical is just what you needed to light up you life, or main focus is Electrical Switches, Outlets & Fixtures, Electrical Wiring or Panel Upgrade, So don't sreach in the dark for a good electrican when you are ready to hire call us.\n

16 neighbors recently requested a quote
Recommended by84%of homeowners
Vertex Contracting
5.0(
5
)
Fixed Generator - Install

Serving Radford, VA and surrounding areas

In business since 2010

Free estimates

Credit card accepted

"Alex & his crew at Appalachian Property Maintenance did a fantastic job at replacing my basement stairs & drywall after they had to be torn out for foundation repair. They were able to get to the job within a week and completed the job within a few days. They also did quality work and it cost a lot less than I expected."
Response time1 day
Response rate90%
Recommended by80%of homeowners
Avatar for The Home Depot - Generators
The Home Depot - Generators
2.5(
1
)
Fixed Generator - Install

Serving Radford, 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

Harmony Electric
4.3(
4
)
Portable Generator - Repair

Serving Radford, VA and surrounding areas

In business since 2019

Credit card accepted

"Mark Older did a fantastic job at a reasonable price. He is a licensed electrician, but also very skilled with carpentry and drywall. The job involved removing a wall in the kitchen, with substantial rewiring. He revised and leveled the footprint for the new cabinetry, which he afterward installed. There was extensive revision of the drywall which he seamlessly restored. I am happy to give him my endorsement."
Response time2 hrs
Recommended by75%of homeowners
Showing 1-10 of 15
Generator Install questions, answered by experts

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.

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

You can determine what size generator you need for a transfer switch by matching the switch to the largest outlet on your generator. Larger generators can power up to 10 circuits, while most 5,000-watt generators can provide power to six circuits. So, if your generator’s largest outlet is 30 amps, you’ll need a 30-amp transfer switch.

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

In most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home generators. A permit for a generator usually costs between $50 and $250, depending on where you live. Your electrician or certified generator installer will usually pull the permit for you—and might be required to do so by your building department—but you’ll be on the hook for the cost of the permit. You should ask your installer before agreeing to any work if they will pull the necessary permits for your project.

The Radford, VA homeowners’ guide to generator installs

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