Top-rated generator install pros.

Best generator install pros near Marionville, MO

Enter your zip and get matched with up to 5 pros

Need a pro for your generator install project in Marionville, MO?

Select your specific project to find the pro for you.

Verified Reviews for Generator Install pros in Marionville, MO

*The Angi rating for Generator Install companies in Marionville, MO 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 Marionville, MO 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 March 09, 2026

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

Avatar for At Home Electric
At Home Electric
5.0(
7
)
Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair+4 more

Serving Marionville, MO and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Marco was very professional and meticulous. Took care of our electrical needs with very little disruption. He did a fantastic job and we've already recommended him to others. Afterword he checked our main electrical box to make sure there are no pending issues. Great Job, Marco. Thank You!"
Breaker panel replacement
24KW Generac Generator
Leviton SMART load center
Generac whole home standby generator
Old outdated load center

+2

Response time1 day
20 neighbors recently requested a quote
Recommended by100%of homeowners
Request Quote
Avatar for Mr. Electric of Joplin Area
Mr. Electric of Joplin Area
4.2(
63
)
Fixed Generator - Install

Serving Marionville, MO and surrounding areas

Approved

In business since 2009

Emergency services offered

Credit card accepted

"Very professional and friendly, installed new ceiling lights in the dinning room and cleaned the mess after he was finished. Will use Mr. Electric for my next electrical job. Christian Mast of Nixa, MO"
Vanity lights
Chandelier
Chandelier
Pool lighting
Vanity lighting

+3

Response time1 day
Response rate100%
53 neighbors recently requested a quote
Request Quote
Avatar for Electric Geek Squad
Electric Geek Squad
5.0(
8
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install

Serving Marionville, MO and surrounding areas

Approved

In business since 2022

Free estimates

Small jobs welcome

"Very good professional experience and great installer A1 experience well done Sir."
Response time3 hrs
1 neighbors recently requested a quote
Recommended by100%of homeowners
Request Quote
Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
New to Angi
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business

Serving Marionville, MO and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

We are the experts in the field of Whole Home Standby Generators, with over 20 years of experience in the game. We provide turn-key installation by licensed professionals - 24 hour emergency service - Remote Monitoring - Long term maintenance and service by factory trained technicians. \nYou can trust our team, knowing that we have a Triple-A Rating with the Better Business Bureau and received the BBB Torch Award for Ethics. We look forward to discussing your needs and providing a recommendation and services you can rely on. \n

Response time1 day
Response rate100%
81 neighbors recently requested a quote
Request Quote
Avatar for Guardian Electrical LLC
Guardian Electrical LLC
5.0(
10
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Marionville, MO and surrounding areas

In business since 2012

Free estimates

Credit card accepted

"Ed did a great job. He had great communication throughout the project. He installed a generator hookup, moved some items around on our panel, and installed a few extra outlets for us."
Response time1 day
Response rate98%
Request Quote
Showing 1-10 of 31
Generator Install FAQs, 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.

A portable generator can supply power to selected appliances and circuits in a home, but it's generally not designed to handle the entire household's electrical needs simultaneously. Portable generators have limited wattage capacity, so they are only designed to power essential devices and electronics temporarily until local power is restored. If your power needs outweigh the capabilities of a portable generator, consider installing a whole-home generator instead.

To reduce AC startup power for a whole-house generator, install a soft start kit or hard start capacitor, which lowers the initial surge by gradually ramping up the compressor. Using a smart load manager can also help by staggering startup loads, preventing a system overload and future costly repairs.

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.

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. 

The Marionville, MO homeowners’ guide to generator installs

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

See all articles