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Verified Reviews for Generator Install pros in Diamond, MO

*The Angi rating for Generator Install companies in Diamond, 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 Diamond, 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 January 08, 2026

Find Generator install pros in Diamond

Avatar for At Home Electric
At Home Electric
5.0(
7
)

Serving Diamond, MO and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"The service went very well. Completed the trash in one day. Really nice guy and does good work. Would hire again if I needed more electrical services!"
Breaker panel replacement
24KW Generac Generator
Leviton SMART load center
Generac whole home standby generator
Old outdated load center

+2

Response time1 day
23 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
New to Angi

Serving Diamond, 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 Generator Sales and Installation, with over 20 years of experience in the game.\nWe provide turn-key installation by licensed professionals - 24 hour emergency service - Remote Monitoring - Long term maintenance and service by factory trained technicians.

Response time1 day
Response rate100%
55 neighbors recently requested a quote
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Avatar for Paschal Air Plumbing & Electric
Paschal Air Plumbing & Electric
4.9(
7
)

Serving Diamond, MO and surrounding areas

Approved

In business since 1965

Free estimates

Credit card accepted

At Paschal there is a single statement that we live by every day. “Professional People. Professional Service.” Being a professional is more than just earning a living through an occupation. Professionalism involves consistently achieving high standards, both visibly and “behind the scenes” – whatever your role or profession.\n\nProfessionalism is a powerful quality. It allows you to fulfill your role to the best of your ability. It helps you to impress and inspire others. And it gives you a deep sense of satisfaction and self-worth.\n\nWhat's more, professionalism is something that everyone can aspire to from day one of their career.\n\nA Paschal Professional gives 150% every day. They go above and beyond what needs to be done. They have pride & satisfaction in every project they tackle.

Paschal Air
Paschal Air
Paschal Air
32 neighbors recently requested a quote
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Avatar for Allstate Electric and Communications
Allstate Electric and Communications
5.0(
23
)

Serving Diamond, MO and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"Placing Underground PVC carrying around 15 ft of cable that was attached to an existing outlet. 4 GFI's installed to connect covered outdoor outlets. Also Installed 2 LED low voltage lights + replace bulbs for 3 outdoor led lights + relocated a light fixture halogen outdoor great was very good done,"
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+3

Recommended by100%of homeowners
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Generator Install questions, answered by experts

The cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500 to $2,000

  • Partial-Home Generators (9kW–20kW): $2,000 to $6,500

  • Whole-House Generators (22kW–48kW): $5,000 to $18,000

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

Carbon monoxide emissions aren’t only dangerous to human life, but they also harm our planet. While natural gas generators emit lower levels of CO than other fuel sources, there are still ways to reduce emission levels. For example, shop around for an eco-friendly generator that complies with current emission standards. Also, make sure your generator is serviced regularly to avoid CO buildup. 

The average cost to install a home generator is $5,200, but total costs can range from $500 to $18,000 or more. The final price depends on several factors, including the generator's size, type, brand, fuel source, and the cost of labor and assembly. The generator's size is the most significant cost factor, as units that can power larger homes with higher energy demands cost more.

Cost breakdowns by generator type are typically as follows:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500–$2,000

  • Partial-Home Generators (9kW–20kW): $2,000–$6,500

  • Whole-House Generators (22kW–48kW): $5,000–$18,000

To ensure you get the right size unit for your needs without overpaying, consider hiring an electrician to calculate the electrical load of your essential appliances. It is also recommended to get at least three quotes from qualified installers to find the best fit for your budget.

Generators are usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

Natural gas generators are designed to run for extended periods of time, such as power outages during a natural disaster. Since there’s no limit to the supply of natural gas, they don’t need to stop for refills. However, generators do need maintenance, including pauses to check and add oil. Constantly running them will also cause a lot more wear and tear, leading to a shorter lifespan.

The Diamond, 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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