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Avatar for Rick Thompson Electric
Rick Thompson Electric
4.9(
78
)

Serving Dahlgren, VA and surrounding areas

Approved

In business since 1981

Free estimates

Warranties offered

"While I did not hire, Rick Thompson Electric were straight forward and explained they did not do work on B&S Generators; however, they did provide me with the number for Inspired Electrical who I am working with. Not many companies will be straight forward and recommend a competitor. Definitely signs of a true professional!"
Response time2 days
10 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for M. W. Butler Electrical, LLC
M. W. Butler Electrical, LLC
0.0(
2
)

Serving Dahlgren, VA and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

M. W. Butler Electrical is proud to be a family owned and locally operated business that has been serving the community since 2006! With years of experience and unmatched expertise, we can help with any and all of your electrical needs. Since opening our doors we have built our business on providing customers with the highest quality products and service at a fair price. Our customers know that they can count on us to be timely, tidy and when the job is done that they will be 100% satisfied with the work completed. Let us show you the M.W. difference, get in touch today!\n-$150 diagnostic fee applied to job when hired

104 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for R J ELECTRICAL L L C
R J ELECTRICAL L L C
4.8(
5
)

Serving Dahlgren, VA and surrounding areas

In business since 2024

Free estimates

Emergency services offered

"While installing the whole home power system the team kept the yard orderly and saved way more grass the promised just from working smarter thank you again for all of you help."
Charging Station complete
Fixture day
New Kitchen lighting
Disconnect for safety
Wall lighting

+53

Response time3 hrs
Recommended by66%of homeowners
Avatar for NL&K Electrical Services
NL&K Electrical Services
5.0(
2
)

Serving Dahlgren, VA and surrounding areas

"I had seven different lighting fixtures installed throughout the house along with 3 mounted TV’s. He’s knowledgeable and skilled and completed the job quicker than I expected. Extremely personable, I recommend him to all of my neighbors on my street. I would definitely hire NL&K again."
The new ring doorbell
Recommended by100%of homeowners
Avatar for AC/DC Electric LLC
AC/DC Electric LLC
5.0(
2
)

Serving Dahlgren, VA and surrounding areas

In business since 2023

Free estimates

Emergency services offered

"The team was punctual and did exceptional work. In addition, I got three quotes and they were the best quote that I received. The guys were knowledgeable, and worked diligently to complete the job in one day. Very impressed. Would highly recommend."
Gas line grounding
Level 2 EV Charger
Generator relocation
Pole light
New outlet installation

+4

Response time2 days
Recommended by100%of homeowners
Avatar for The Home Depot - Generators
The Home Depot - Generators
2.5(
1
)

Serving Dahlgren, 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 questions, answered by experts

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

Carbon monoxide emissions aren’t only dangerous to human life, but they also harm our planet. While natural gas generators emit lower levels of CO than other fuel sources, there are still ways to reduce emission levels. For example, shop around for an eco-friendly generator that complies with current emission standards. Also, make sure your generator is serviced regularly to avoid CO buildup. 

Natural gas generators are designed to run for extended periods of time, such as power outages during a natural disaster. Since there’s no limit to the supply of natural gas, they don’t need to stop for refills. However, generators do need maintenance, including pauses to check and add oil. Constantly running them will also cause a lot more wear and tear, leading to a shorter lifespan.

Generators are safe to use as long as they are installed and operated correctly according to the manufacturer's recommendations. The most critical safety tips are to never use a portable or fuel-powered generator inside an enclosed space due to the risk of lethal carbon monoxide poisoning; always operate it outdoors where fumes can dissipate away from your home. Additionally, never attempt to connect a generator to your home’s electrical panel yourself—hire a professional to ensure the setup meets safety standards. Finally, avoid overloading the generator by not connecting more appliances than it is rated for, as this can damage your equipment or cause a fire.

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 Dahlgren, VA homeowners’ guide to generator installs

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