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Verified Reviews for Generator Install pros in Fredericktown, MO

*The Angi rating for Generator Install companies in Fredericktown, 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 Fredericktown, 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 December 06, 2025

Find Generator install pros in Fredericktown

Avatar for Randolph Electrical Contracting

Randolph Electrical Contracting

4.89(
41
)
•Approved Pro

Randolph Electrical Contracting

4.89(
41
)
•Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
6 years of experience

Randolph Electrical Contracting is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"Max was excellent and his employees extremely polite and professional. They wired a whole house for us and he came quickly when we needed him. We would hire him again if we needed any electrical work. A real pleasure of a transaction. Thanks Max!!"

Keith H on December 2022

Randolph Electrical Contracting is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"Max was excellent and his employees extremely polite and professional. They wired a whole house for us and he came quickly when we needed him. We would hire him again if we needed any electrical work. A real pleasure of a transaction. Thanks Max!!"

Keith H on December 2022

Avatar for Donohue's Lightning Rods

Donohue's Lightning Rods

4.89(
50
)
•Approved Pro

Donohue's Lightning Rods

4.89(
50
)
•Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
96 local quotes requested

The modern suburban and small town home of today has become an ideal lightning target. The home owner would do well to recognize lightning for the destructive force that it is and protect against this major life and fire hazard. Donohue's Lightning Rods is based in Missouri, near the factory where most of the residential and commercial lightning rod supplies are manufactured. Jim travels regularly to Texas, Louisiana, Arkansas, Missouri, Kansas, Montana, Wyoming, Colorado, and New York. Call today to find out when Jim will be in your area. For installations outside Missouri, Kansas, or Texas, Jim waits until there are a few customers lined up, thus being able to provide the same quality services at affordable prices. **WE DO NOT DO ELECTRICAL SERVICES.** (ONLY LIGHTNING RODS)

"The job was beautifully and professionally done. I have a zero scape yard and the gentleman was concerned about disturbing the gravel when putting the rod into the ground. WOW!!!!"

Debra D on June 2025

The modern suburban and small town home of today has become an ideal lightning target. The home owner would do well to recognize lightning for the destructive force that it is and protect against this major life and fire hazard. Donohue's Lightning Rods is based in Missouri, near the factory where most of the residential and commercial lightning rod supplies are manufactured. Jim travels regularly to Texas, Louisiana, Arkansas, Missouri, Kansas, Montana, Wyoming, Colorado, and New York. Call today to find out when Jim will be in your area. For installations outside Missouri, Kansas, or Texas, Jim waits until there are a few customers lined up, thus being able to provide the same quality services at affordable prices. **WE DO NOT DO ELECTRICAL SERVICES.** (ONLY LIGHTNING RODS)

"The job was beautifully and professionally done. I have a zero scape yard and the gentleman was concerned about disturbing the gravel when putting the rod into the ground. WOW!!!!"

Debra D on June 2025

Avatar for Tri-State Water, Power & Air

Tri-State Water, Power & Air

1.00(
1
)

Tri-State Water, Power & Air

1.00(
1
)
33 years of experience

We are the experts in the field of Whole Home Generator Sales and Installation, 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.

"They initially contacted me via email ready to make a visit for the install. Said that they could do the project no problem. Then when they realized I wouldn’t be buying a generator from them, which I had TOLD them upfront, they canceled on me. That is not an acceptable way to do business. They should simply state that they only install generators that they sell and not waste my time."

James K on May 2025

We are the experts in the field of Whole Home Generator Sales and Installation, 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.

"They initially contacted me via email ready to make a visit for the install. Said that they could do the project no problem. Then when they realized I wouldn’t be buying a generator from them, which I had TOLD them upfront, they canceled on me. That is not an acceptable way to do business. They should simply state that they only install generators that they sell and not waste my time."

James K on May 2025

Blomberg Insulation Company

No reviews yet

Blomberg Insulation Company

No reviews yet
17 years of experience

"Making home comfort more Affordable" is our motto. Working hand and hand with our customers, we strive to make every customer feel like family. With the most experienced technicians and highly trained staff, we offer many services pertaining to the insulation field. We work with both home-owners and General Contractors to Bring the best insulation has to offer to YOU.

"Making home comfort more Affordable" is our motto. Working hand and hand with our customers, we strive to make every customer feel like family. With the most experienced technicians and highly trained staff, we offer many services pertaining to the insulation field. We work with both home-owners and General Contractors to Bring the best insulation has to offer to YOU.

Mr Rewire

No reviews yet

Mr Rewire

No reviews yet
22 years of experience

We are a residential service and replacement company with four service vans we can give you a quick response all our electricians undergo continuos training and are drug screened and background checked. We accept major credit cards and can finance larger projects

We are a residential service and replacement company with four service vans we can give you a quick response all our electricians undergo continuos training and are drug screened and background checked. We accept major credit cards and can finance larger projects

Avatar for GIFFORD LUMBER CO INC

GIFFORD LUMBER CO INC

No reviews yet

GIFFORD LUMBER CO INC

No reviews yet
96 years of experience

Welcome to Gifford Lumber Company, The largest and oldest home center in the county, where you'll always find Quality At The Right Price! Whether you are a contractor, home owner or a do-it-yourselfer we are your source for the products want and the service you need. Since 1929 Gifford Lumber has supplied materials for the building needs in the area. Come in and let our staff help you find just what you need. We have Low Prices and a Great Selection!

Welcome to Gifford Lumber Company, The largest and oldest home center in the county, where you'll always find Quality At The Right Price! Whether you are a contractor, home owner or a do-it-yourselfer we are your source for the products want and the service you need. Since 1929 Gifford Lumber has supplied materials for the building needs in the area. Come in and let our staff help you find just what you need. We have Low Prices and a Great Selection!

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Generator Install questions, answered by experts

In some situations, yes. Never try to put biofuel into any home generator without checking the specifics first. If a generator has the ability to run on diesel, it can also run pure biofuel (the clear kind made from seed oils, for example). But if you are using biofuel made from animal fats or vegetable oils, the generator will need significant modifications before it can handle a sludgier type of biofuel.

You can determine what size generator you need for a transfer switch by matching the switch to the largest outlet on your generator. Larger generators can power up to 10 circuits, while most 5,000-watt generators can provide power to six circuits. So, if your generator’s largest outlet is 30 amps, you’ll need a 30-amp transfer switch.

Here’s what you can run with different wattages and types of generators:

Portable generator:

  • 2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. 

  • 4,000 watts will keep two large appliances operating and a few smaller devices.

  • 8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.

Partial to whole-house generator:

  • 20,000 watts and above will make it seem like your home’s power is still on.

Yes, installing a generator usually increases your property value because buyers are getting the added peace of mind knowing they’ll be able to maintain power through blackouts. In most cases, you should see close to a 100% return on investment (ROI). Keep in mind that home generators usually need a permanent foundation, and installing a concrete slab will likely raise your property taxes slightly.

A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the total wattage of the devices that you’d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.

The Fredericktown, MO 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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