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Avatar for Britebox Electrical Services
Britebox Electrical Services
4.5(
43
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Rex, GA and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Customers say: Super punctual

"Electrician identified then installed the charger in a location where the cord would reach my car. He the completed the cable run back to the distribution panel in a cosmetically appealing way. Excellent job."
Response time1 day
6 neighbors recently requested a quote
Recommended by58%of homeowners
Avatar for Mr. Electric of SE Atlanta - Forest Park
Mr. Electric of SE Atlanta - Forest Park
5.0(
8
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install

Serving Rex, GA and surrounding areas

Approved

In business since 2005

Emergency services offered

Warranties offered

Mr. Electric of SE Atlanta Forest Park - Quotes Are Not Provided Over The Phone\n\nHere at Mr. Electric of SE Atlanta Forest Park, we have the power to make things better. Call us today for electrical repair near you, and we’ll make sure the electrical components at your property are up to code. We perform electrical inspections SE Atlanta Forest Park can trust, free of charge!

What We Do...
83 neighbors recently requested a quote
Avatar for Premier Generators
Premier Generators
New to Angi
Fixed Generator - RepairGenerator - Repair - For Business

Serving Rex, GA and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

Premier Generators has helped homeowners and businesses across the Southeast protect what matters with reliable Generac home standby generators for over 30 years.\n\nWhen power goes out, your generator is designed to start automatically and restore power within seconds, helping keep your home or business running smoothly. We start by learning what matters most on your property, then guide you through a clear process: right-sized recommendations, permitting, installation, and complete start-up and testing.\n\nOur relationship does not end at installation. We provide service and maintenance to help your system stay ready, including routine inspections, preventive maintenance, and repairs. Ask about maintenance plans and support options, plus warranty coverage that can extend up to 10 years.\n\nWhether you’re protecting a whole home or a commercial site, we’ll help you choose the right solution for your needs and leave you feeling confident, informed, and prepared long before the next outage.

Avatar for Casteel Heating & Cooling, LLC (East)
Casteel Heating & Cooling, LLC (East)
4.0(
1
)
Fixed Generator - InstallFixed Generator - Repair

Serving Rex, GA and surrounding areas

Approved

In business since 1987

Emergency services offered

Warranties offered

Casteel Heating, Cooling, Plumbing and Electrical is the company you can trust with your home service needs. We offer installation, repair and replacement services based on flat rate pricing and never any emergency fees. Our highly educated technicians pride themselves on their craftsmanship and customer service. Casteel offers industry leading warranties and guarantees to include our Amazing Care Guarantee. You get 5 star service or your service call is free! At Casteel we know your time and money are valuable, for this reason we provide you with the ability to track your technician right to your door. With fair pricing, top notch team members and our Amazing Care Guarantee, you will not go wrong with Casteel as your home services company of choice.

Casteel electrician looking at breaker box
9 neighbors recently requested a quote
Stevens Electrical LLC
New to Angi
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Rex, GA and surrounding areas

Approved

Emergency services offered

Small jobs welcome

Offers commercial services

Stevens Electrical LLC brings straightforward, dependable electrical work to homes, businesses, and job sites across Cobb County. From a flickering breaker to a full industrial build-out, every project gets the same attention to detail and respect for your time and property.

2 neighbors recently requested a quote
Avatar for Southern Power Systems, LLC
Southern Power Systems, LLC
4.9(
86
)
Fixed Generator - InstallFixed Generator - Repair

Serving Rex, GA and surrounding areas

In business since 2002

Free estimates

Emergency services offered

"Randy Hamrick(owner) was very thorough answering my questions and follow up. The installation crew was pleasant and efficient. Generator installation was completed on the date promised."
Generator Installation
Generator Installation
Generator Installation
Generator Installation
Generator Installation

+2

Response time2 days
64 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for All Pro Generator Service & Repair, LLC
All Pro Generator Service & Repair, LLC
5.0(
4
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Rex, GA and surrounding areas

In business since 2024

Free estimates

Credit card accepted

"Ashley made the process painless and easy. He communicated with me throughout the entire repair and even took the time to answer my questions as well. I’ve since added them for my annual maintenance to keep my generator working every time we need it."
Cleaning a residential generator.
The owner (Ashley) in front of the Atlanta Falcons head coach's home after repairing his generator and transfer switch
This generator is now serviced and spotless and ready for the next storm.
Recommended by100%of homeowners
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Generator Install questions, answered by experts

A home that is 2,500 square feet will likely need a 20kW to 25kW generator. Consult your local generator installer to confirm the generator size needed to power your home before purchasing a new one. Be sure to consider how much power your necessary devices need to run.

While natural gas generators are costly, they’re a great option for standby power due to the reliability of natural gas as a fuel source. Unlike other fuels, natural gas is delivered through underground pipes, making outages extremely rare and less likely to be affected by the elements. As long as the area isn’t prone to earthquakes, they offer an unlimited supply of natural gas that doesn’t degrade over time or require storage in tanks.

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

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.

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 Rex, GA homeowners’ guide to generator installs

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