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Verified Reviews for Generator Install pros in Madison, MS

*The Angi rating for Generator Install companies in Madison, MS is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Madison, MS is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on November 18, 2025

Find Generator install pros in Madison

Avatar for Advanced Electric Service, Inc.
Advanced Electric Service, Inc.
4.8(
72
)

Serving Madison, MS and surrounding areas

Approved

In business since 2002

Emergency services offered

Small jobs welcome

"I purchased a crystal chandelier and a remote control switch for my hallway. The installation process was more extensive than anticipated, however, Levi(Electrician) did a fantastic job. He was thorough and made sure the job was done correctly. Highly recommend if electrical work is needed."
Response time3 hrs
Response rate85%
18 neighbors recently requested a quote
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Avatar for Power Cross
Power Cross
4.8(
83
)

Serving Madison, MS and surrounding areas

Approved

In business since 2005

Emergency services offered

Customers say: True professional

"With everything going on in our world today it is nice to know that there are still some good quality trustworthy people out there. Got Power Cross off the internet to fix our home generator. Power Cross was not only quick to respond but repaired, cleaned, and gave us some knowledgeable information. Thanks POWER CROSS"
Portable fixed
Marine water cool generator
20 15kw home standby generator
Commercial unit
Marine engines

+10

Response time5 hrs
Recommended by97%of homeowners
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Avatar for Climate Guard LLC
Climate Guard LLC
4.8(
8
)

Serving Madison, MS and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"The project went went smooth with the financing they had and Kendrick came out and help me with my security cameras"
Generator Project
Alarms Project
Alarms Project
Response time1 day
Response rate94%
60 neighbors recently requested a quote
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Avatar for AKM Air Solutions
AKM Air Solutions
5.0(
60
)

Serving Madison, MS and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Completely professional and exceptional customer service. The guys came out the same day we called and assessed the issue we had. The very next morning they arrived with all materials to do a complete system install. The guys didn't leave until the job was done. Cleaned up so well you wouldn't have known they were even here. AKM is top notch. You're not going to find a better company with amazing prices, work ethic, and customer service. We are super satisfied!"
RHEEM
Duct Cleaning
Rotobrush
SAVE
UV Lights

+9

Response time9 hrs
16 neighbors recently requested a quote
Recommended by98%of homeowners
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Avatar for Hightech Electric LLC
Hightech Electric LLC
5.0(
11
)

Serving Madison, MS and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"Extremely prompt, professional, and courteous. Explains what is happening in the repair process… l liked that. Very fair price! Would highly recommend him to anyone needing electrical repair. Awesome job"
Logo
Sheet rock replacement
Sheet rock replacement
Sheet rock replacement
Sheet rock replacement

+3

18 neighbors recently requested a quote
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Eaton Electric LLC
5.0(
2
)

Serving Madison, MS and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

Eaton Electric 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.

Response time2 days
Recommended by100%of homeowners
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Nail Electric
New to Angi

Serving Madison, MS and surrounding areas

Approved

Hey everyone my names Parker Nail. I’m excited to launch my LLC. I’ve been doing Electrical work for 4 years now. I’m always looking for side work and would be happy to handle any type of electrical service needed. My goal is to provide quality and safe work that you can rely on. I’m available after I get off work during the week and on weekends.

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Generator Install questions, answered by experts

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.

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

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.

It might seem counterintuitive, but installing a generator transfer switch will save you money in the long run. While you’ll have to pay between $400 and $2,500 to have the transfer switch installed, you’ll recoup that amount later on when you don’t have to pay for expensive repairs to your appliances, devices, and electrical system that may have burned out, overloaded, or stopped working due to a sudden loss of power or an incorrect hook up of a generator to your home. 

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.

The Madison, MS homeowners’ guide to generator installs

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

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