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Avatar for Mr. Electric Of Birmingham
Mr. Electric Of Birmingham
4.6(
40
)
Fixed Generator - InstallFixed Generator - Repair

Serving Mountain Brook, AL and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"I am very happy with the service we received from Mr. Electric. We replaced all of our old smoke detectors, installed a new ceiling fan, repaired a bad breaker and got an overdue tune-up on our breaker panel. They are easy to schedule an appointment with and they arrived on time! They are very professional. We will definitely use them again."
company Truck
Generators
Generators
panel upgrade
panel update

+18

Response time5 hrs
27 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for Lovelady Electrical Contractors LLC
Lovelady Electrical Contractors LLC
4.3(
12
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Mountain Brook, AL and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

Lovelady Electrical Contractors, LLC succeeds because of our strong commitment and experience. Our installers hold an average of five or more years of experience on the job. We handle both residential and commercial electrical jobs and provide the lowest rates possible on both general and emergency repairs. Whether you need an entire re-wiring or just have a switch that is not operating properly, our courteous professionals are here to help home and business owners throughout the greater Bessemer, AL area.

Response time1 day
Response rate100%
7 neighbors recently requested a quote
Avatar for APS Lighting and Electrical LLC
APS Lighting and Electrical LLC
5.0(
5
)
Fixed Generator - InstallFixed Generator - Repair

Serving Mountain Brook, AL and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"I called APS about getting a standby generator for my home, and the whole experience was great from the start. They took the time to explain everything in a way that actually made sense and walked me through what to expect instead of just trying to sell me something. What really stood out to me was how thorough they were. They noticed my gas meter was undersized for what I already had and helped get that addressed with the utility company before it became a bigger issue. That?s the kind of thing most people probably wouldn?t even know to ask about. Their pricing was competitive, communication was easy, and everyone I dealt with was professional and knowledgeable. The 10-year warranty being included was a nice bonus too. Overall, I felt like they genuinely cared about doing the job right. I?d absolutely use APS again and would recommend them to anyone looking for electrical work or a home generator."
18 neighbors recently requested a quote
Avatar for Hiller Plumbing, Heating, Cooling, & Electrical
Hiller Plumbing, Heating, Cooling, & Electrical
4.5(
38
)
Fixed Generator - InstallFixed Generator - Repair

Serving Mountain Brook, AL and surrounding areas

Approved (Corporate)

In business since 1990

Free estimates

Emergency services offered

Hiller Plumbing, Heating, Cooling, & Electrical, established in 1990, stands for quality and reliability. With our 'Happy You'll Be or the Service is Free' guarantee, we are dedicated to customer satisfaction in Birmingham and the surrounding communities. Our plumbers provide emergency repairs, sewer line service, and expert installation or repair of water heaters. Our HVAC specialists ensure your comfort with preventative maintenance, air conditioning and furnace repairs, for year-round comfort. Our licensed and insured electricians offer prompt emergency response, custom upgrades, and safe, thorough electrical fixes for both residential and commercial properties. Hiller is your trusted provider for all your home service needs.

My jobs
My jobs
My jobs
My jobs
My jobs

+9

Recommended by94%of homeowners
Gaines Electric
4.7(
5
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Mountain Brook, AL and surrounding areas

Approved

In business since 2017

Free estimates

Offers commercial services

With over 20 years of experience, Gaines Electric is an owner operated leader in the industry. Specializing in residential and commercial electrical service we guarantee our work and stand by our promise to provide quality service in and around the state of Alabama. Call us today!

Response time1 day
2 neighbors recently requested a quote
Recommended by100%of homeowners
1ST CLASS ELECTRICAL LLC
4.5(
3
)
Portable Generator - RepairFixed Generator - Repair

Serving Mountain Brook, AL and surrounding areas

Approved

In business since 2020

Customers say: Quick response

"They were very knowledgeable about task agreed to do. He was great with answering questions about future projects and gave me fair prices ! I love that they were punctual and cleaned up after Themselves! They also provided hidden plugs service for hanging tv installations! He made my home stylish and safe with everything done! I really had and 1st class experience!!"
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Reynolds Home Solutions LLC
Reynolds Home Solutions LLC
New to Angi
Generator - Install - For Business

Serving Mountain Brook, AL and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

Reynolds Electrical Services 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.\n

1 neighbors recently requested a quote
Avatar for Dunn's HVAC, Plumbing & Electrical
Dunn's HVAC, Plumbing & Electrical
New to Angi
Fixed Generator - InstallFixed Generator - Repair

Serving Mountain Brook, AL and surrounding areas

Approved (Corporate)

In business since 2014

Free estimates

Emergency services offered

At Dunn's Heating, Cooling, Plumbing, and Electrical, we know how hard it is to find a Dependable company you can trust. The time-consuming effort can be frustrating and overwhelming. We believe what matters is getting back to what’s important to YOU, so we provide dependable service Dunn right! Dunn's Heating, Cooling, Plumbing, and Electrical is built upon honesty, integrity, and trust. \n\nWe are your local choice for all your HVAC repair, installation, and service needs. We are proud to serve Anniston and Pelham, AL, as well as the surrounding cities. We are family-owned and also family-operated. As a local business, we care about and are invested in the well-being of our community and its future.

22 neighbors recently requested a quote
Scott Services Company
0.0(
1
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Mountain Brook, AL and surrounding areas

Approved

In business since 1982

Free estimates

At Scott Services Company we take great pride in our experience, expertise and quality workmanship. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. We take great care to communicate and work with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

Response time1 day
Recommended by100%of homeowners
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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.

As a safety measure, you should always turn off the main breaker while operating your generator’s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.

Whole-house generators need to be installed on level ground several feet away from walls and other objects. Because they tap into the electrical system directly, they usually need to be close to your home electrical panel for a transfer switch installation. It also helps with installation if they are near to a gas line or propane tank installation.

It’s usually better to repair your generator if it isn’t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around $300 on average, while installing a new whole-house generator costs around $5,000 on average. The only exception is if you know your generator is reaching the end of its useful life, usually between 30 and 40 years. If you have an older generator, you could face multiple repairs in the coming years, which might mean that a full replacement will be more cost-effective over time.

The amount of time a standby generator can run continuously is around 3,000 hours on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.

The Mountain Brook, AL homeowners’ guide to generator installs

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