Top-rated generator install pros.

Get matched with top generator install pros in Liberty, MO

There are 5 highly-rated local generator install pros.

Verified Reviews for Generator Install pros in Liberty, MO

*The Angi rating for Generator Install companies in Liberty, 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 Liberty, 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 October 24, 2025

Find Generator install pros in Liberty

Tri-State Water, Power & Air

Kansas City
New on AngiNew on Angi
•Approved Pro

Tri-State Water, Power & Air

Kansas City
New on AngiNew on Angi
•Approved Pro
53 local quotes requested

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.

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.

Avatar for Anthony Plumbing, Heating & Cooling

Anthony Plumbing, Heating & Cooling

15203 W 99th St
4.75(
1,407
)
•Approved Pro

Anthony Plumbing, Heating & Cooling

15203 W 99th St
4.75(
1,407
)
•Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
669 local quotes requested

We have provided hometown service to residents of the Kansas City Metro since 1951. We offer FREE ESTIMATES on a new air conditioner, furnace, boiler, heat pump, geothermal, zoning, water heater, tankless water heater, plumbing remodel projects, and battery back-up sump pump.

"James was fantastic! He was polite and knowledgeable. He efficiently fixed our air conditioning, and informed us of all the different options we had. We will certainly use this company again if James is any indication of the caliber of staff they employ."

Alison Z on October 2025

We have provided hometown service to residents of the Kansas City Metro since 1951. We offer FREE ESTIMATES on a new air conditioner, furnace, boiler, heat pump, geothermal, zoning, water heater, tankless water heater, plumbing remodel projects, and battery back-up sump pump.

"James was fantastic! He was polite and knowledgeable. He efficiently fixed our air conditioning, and informed us of all the different options we had. We will certainly use this company again if James is any indication of the caliber of staff they employ."

Alison Z on October 2025

Worldwide Unlimited, Inc.

1240 West 68th Terrace
5.00(
1
)
•Approved Pro

Worldwide Unlimited, Inc.

1240 West 68th Terrace
5.00(
1
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
4 years of experience

We are a locally owned and operated company. We value honesty and integrity in all aspects of our business. We offer a variety of home improvement services that are customized to each individual project. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

"They were very professional, accommodating and did a great job."

Jim S on July 2022

We are a locally owned and operated company. We value honesty and integrity in all aspects of our business. We offer a variety of home improvement services that are customized to each individual project. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

"They were very professional, accommodating and did a great job."

Jim S on July 2022

Evan's Facilities Repair LLC

876 201st Street
New on AngiNew on Angi
•Approved Pro

Evan's Facilities Repair LLC

876 201st Street
New on AngiNew on Angi
•Approved Pro
7 years of experience
Free onsite estimate

Evan's Facilities Repair, is a locally owned and operated company that values honesty and integrity in all aspects of our business. With over 25 years of experience, we pride ourselves on our 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!

Evan's Facilities Repair, is a locally owned and operated company that values honesty and integrity in all aspects of our business. With over 25 years of experience, we pride ourselves on our 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!

Rick's Handyman Services, LLC

14605 Plattsburg Road
4.70(
15
)
•Approved Pro

Rick's Handyman Services, LLC

14605 Plattsburg Road
4.70(
15
)
•Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
22 years of experience

Rick's Handyman Services, LLC is here for all your handyman and appliance repair needs! No project is too small or large. Give us a call for a free estimate on your project!

"If I could give this guy a zero rating I would. He came 2-19-20 to give us an estimate on our failing toilet and drippy faucet. He was coming yesterday, 2-21-20, to do the repair at 3:30pm. My husband took the afternoon off work to be home. At 3:40pm he still was not here, so I called him. He told me I should **get someone else**. He comes across as a **good old boy** and will talk your leg off. Even about other customers. He drives a retired vehicle and I would think would have ample room to stock normal plumbing repair parts such as a toilet fill valve one would think. Unreliable. Move on from him is my opinion. My husband was so mad he watched online videos, and did the necessary repairs for $20."

Lisa B on February 2020

Rick's Handyman Services, LLC is here for all your handyman and appliance repair needs! No project is too small or large. Give us a call for a free estimate on your project!

"If I could give this guy a zero rating I would. He came 2-19-20 to give us an estimate on our failing toilet and drippy faucet. He was coming yesterday, 2-21-20, to do the repair at 3:30pm. My husband took the afternoon off work to be home. At 3:40pm he still was not here, so I called him. He told me I should **get someone else**. He comes across as a **good old boy** and will talk your leg off. Even about other customers. He drives a retired vehicle and I would think would have ample room to stock normal plumbing repair parts such as a toilet fill valve one would think. Unreliable. Move on from him is my opinion. My husband was so mad he watched online videos, and did the necessary repairs for $20."

Lisa B on February 2020

Avatar for Handyman Harlin, LLC

Handyman Harlin, LLC

33494 West 160th Street
4.96(
12
)
•Approved Pro

Handyman Harlin, LLC

33494 West 160th Street
4.96(
12
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
6 years of experience

I am a locally owned and operated company that takes great pride my work. I specialize in bathroom remodels but have many years of experience doing electrical and plumbing work as well. I pride myself on the quality of my work and well as my commitment to outstanding results. I look forward to speaking with you about your remodeling needs and building lasting relationships with my clients.

"I hired Todd to reconstruct a medium sized, dilapidated workshop structure on my property to be used as a candle making studio. I had confidence the building could be improved upon but was not exactly sure what to expect. The tin roof was caving in, the building had fire damage, and it was structurally "askew." Todd started with the the side of the structure with the most damage. The results, thus far, are amazing. The side he is working on looks nearly brand new. I am not only impressed with his attention to detail and craftsmanship but also his willingness to articulate his ideas, processes, and techniques. Finally, his time management is outstanding. I have worked with other craftsman in the past and although they might have done great work, showing up on time wasn't always the biggest priority. I highly recommend Todd for any handyman+ job and more! :)"

Carrie A on March 2021

I am a locally owned and operated company that takes great pride my work. I specialize in bathroom remodels but have many years of experience doing electrical and plumbing work as well. I pride myself on the quality of my work and well as my commitment to outstanding results. I look forward to speaking with you about your remodeling needs and building lasting relationships with my clients.

"I hired Todd to reconstruct a medium sized, dilapidated workshop structure on my property to be used as a candle making studio. I had confidence the building could be improved upon but was not exactly sure what to expect. The tin roof was caving in, the building had fire damage, and it was structurally "askew." Todd started with the the side of the structure with the most damage. The results, thus far, are amazing. The side he is working on looks nearly brand new. I am not only impressed with his attention to detail and craftsmanship but also his willingness to articulate his ideas, processes, and techniques. Finally, his time management is outstanding. I have worked with other craftsman in the past and although they might have done great work, showing up on time wasn't always the biggest priority. I highly recommend Todd for any handyman+ job and more! :)"

Carrie A on March 2021

Avatar for Donohue's Lightning Rods

Donohue's Lightning Rods

501 North Las Vegas Trail, Lot D
4.89(
50
)
•Approved Pro

Donohue's Lightning Rods

501 North Las Vegas Trail, Lot D
4.89(
50
)
•Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
115 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 H&M Services

H&M Services

303 E 16th St
4.08(
6
)
•Approved Pro

H&M Services

303 E 16th St
4.08(
6
)
•Approved Pro
Customers say: Quality work
36 years of experience
Free onsite estimate

With over 30 years of experience H & M Services is your trusted contractor for all your home improvement needs. Attention to detail and quality workmanship separate us from the rest. Customer satisfaction is our number one priority. We take great care to listen to what your needs are and make sure the job is done right the first time.

"Randy did a good job with our upstairs bathroom tub/shower install, tile, piping. I would recommend Randy for any handyman services and remodeling."

Brent D on March 2021

With over 30 years of experience H & M Services is your trusted contractor for all your home improvement needs. Attention to detail and quality workmanship separate us from the rest. Customer satisfaction is our number one priority. We take great care to listen to what your needs are and make sure the job is done right the first time.

"Randy did a good job with our upstairs bathroom tub/shower install, tile, piping. I would recommend Randy for any handyman services and remodeling."

Brent D on March 2021

Avatar for Tri-State Water, Power & Air

Tri-State Water, Power & Air

1122 NW Valley Ridge Dr
4.85(
33
)
•Approved Pro

Tri-State Water, Power & Air

1122 NW Valley Ridge Dr
4.85(
33
)
•Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
12 local quotes requested

Tri-State Water, Power, & Air has earned the trust of homeowners by providing top-of-the-line home products & exceptional service. Our dedication to customer satisfaction has allowed us to not only expand our selection of home upgrades but also our footprint, as we're now in several Midwestern states. Whether you're looking for a reliable company to handle a plumbing issue or install a standby generator, tankless water heater, or electric vehicle charging station, we can provide the ideal solution to fit your needs. Throughout the years, we have remained a family-owned company with an unwavering commitment to delivering customer satisfaction. We measure our success in the improvements we make to our customers' home lives. To ensure every homeowner who partners with us receives an outstanding value, we provide personalized solutions, premium products, & expert installations. And we top it off by delivering exceptional service before, during, & long after the project is completed.

"He was very professional. He was a very kind individual name was Barry Sullivan. He was excellent."

Kenneth B on November 2023

Tri-State Water, Power, & Air has earned the trust of homeowners by providing top-of-the-line home products & exceptional service. Our dedication to customer satisfaction has allowed us to not only expand our selection of home upgrades but also our footprint, as we're now in several Midwestern states. Whether you're looking for a reliable company to handle a plumbing issue or install a standby generator, tankless water heater, or electric vehicle charging station, we can provide the ideal solution to fit your needs. Throughout the years, we have remained a family-owned company with an unwavering commitment to delivering customer satisfaction. We measure our success in the improvements we make to our customers' home lives. To ensure every homeowner who partners with us receives an outstanding value, we provide personalized solutions, premium products, & expert installations. And we top it off by delivering exceptional service before, during, & long after the project is completed.

"He was very professional. He was a very kind individual name was Barry Sullivan. He was excellent."

Kenneth B on November 2023

Avatar for KB Complete Electrical

KB Complete Electrical

5621 Foxridge Dr
New on AngiNew on Angi
•Approved Pro

KB Complete Electrical

5621 Foxridge Dr
New on AngiNew on Angi
•Approved Pro
18 local quotes requested
39 years of experience

At KB Complete, every job is an opportunity to highlight our unwavering dedication to meticulousness, ensuring every detail is accounted for. We view our role as your partner in maintaining a safe, comfortable, and efficient home, offering tailored solutions that address all your needs.

At KB Complete, every job is an opportunity to highlight our unwavering dedication to meticulousness, ensuring every detail is accounted for. We view our role as your partner in maintaining a safe, comfortable, and efficient home, offering tailored solutions that address all your needs.

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Generator Install questions, answered by experts

You can determine what size generator you need by listing the various appliances it will power during an outage. Write down the start-up watt usage, and then add them all together. 

A 7,500-watt generator will run your refrigerator, freezer, well pump, and lighting circuits without a problem. However, you’ll need an extra 3,000 to 4,500 watts to run your water heater and another 5,000 to 25,000 watts to run your electric furnace. In these instances, a whole-home generator is your best bet for running your critical equipment.

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.

No, you shouldn’t use an extension cord to plug a generator directly into your home without using a transfer switch. That’s because systems like pumps and HVAC fans need a steady power source that might not be available directly from your generator alone. If you bypass the circuit breaker box, you risk damaging your electrical system, creating a risk of electrical fire or electrical shock to you or any workers repairing lines on your local electrical grid.

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.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

The Liberty, 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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