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

Avatar for OBXtroniX, LLC
OBXtroniX, LLC
4.9(
41
)
Portable Generator - Install

Serving Columbia, NC and surrounding areas

Approved

In business since 2020

Emergency services offered

Warranties offered

"I've had 2 other "electricians" come out over last year or so. Neither could seem to figure out the what the problem was. Alan Ward talked to me on phone prior and by the time he got here, almost same day, he had it figured out. Fixed. We still have more work to be done. We WILL only use Alan for anything electrical we need. We are just so happy. He is extremely knowledgeable. He took time to show my grandson and I several different things. For examlple: He told us what we can do to fix sediments in our water! LoL. ( above and beyond what he was here for) He genuinely cares about his clients and thier safety. We Highly recommend Alan Ward ObXtroniX, LLC"
New Construction
New Construction
New Construction
New Construction
Architectural in-ceiling atmos speakers

+9

Response time10 hrs
Response rate90%
32 neighbors recently requested a quote
Avatar for The Home Depot - Generators
The Home Depot - Generators
2.5(
1
)
Fixed Generator - Install

Serving Columbia, NC 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

JP Electrical Contractors
0.5(
1
)
Fixed Generator - RepairPortable Generator - Repair

Serving Columbia, NC and surrounding areas

In business since 2009

Free estimates

Locally owned and operated, with over 18 years of residential electrical experience. Let us wow you with our quick, reliable and professional touch. What you see is what you get and we ensure you will be satisfied with our work. I would like you to be my next happy customer! Our reputation for listening and problem solving precedes us. We have an expert eye for detail and troubleshooting, as well as being able to work out the best solution for the client. We are located in Chocowinity, North Carolina. Thank you.

Avatar for Positive Electric
Positive Electric
New to Angi
Fixed Generator - InstallFixed Generator - Repair

Serving Columbia, NC and surrounding areas

Free estimates

Emergency services offered

Warranties offered

We take great pride in our experience, expertise, quality and customer service, that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship, and complete customer satisfaction, from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate, with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large, or small the job. Call us today! No problem is too big or insignificant, whether its fixing a light or adding lights to a dark kitchen, we do it all with a positive attitude.

Genassis Corp.
New to Angi
Fixed Generator - RepairGenerator - Repair - For BusinessPortable Generator - Repair

Serving Columbia, NC and surrounding areas

In business since 2023

Free estimates

Offers commercial services

Genassis Corp is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Generator Install FAQs, answered by experts

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. 

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.

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.

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.

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 Columbia, NC homeowners’ guide to generator installs

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