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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 October 25, 2025

Find Generator install pros in Diamond

Avatar for Tri-State Water, Power & Air

Tri-State Water, Power & Air

.
New on AngiNew on Angi
•Approved Pro

Tri-State Water, Power & Air

.
New on AngiNew on Angi
•Approved Pro
87 local quotes requested
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.

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 At Home Electric

At Home Electric

5.00(
7
)
•Approved Pro

At Home Electric

5.00(
7
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
50 local quotes requested

At Home Electric is located in the heart of South West Missouri. We are family owned and operated with the focus primarily on residential electrical services. However, we will gladly have a look at small commercial and other miscellaneous projects. We strive to provide a quality service that makes you "feel at home".

"Everything went great! The job was done correctly and quickly!"

Ann S on December 2024

At Home Electric is located in the heart of South West Missouri. We are family owned and operated with the focus primarily on residential electrical services. However, we will gladly have a look at small commercial and other miscellaneous projects. We strive to provide a quality service that makes you "feel at home".

"Everything went great! The job was done correctly and quickly!"

Ann S on December 2024

Avatar for Everything Computers, LLC

Everything Computers, LLC

888 East 630th Avenue
4.91(
11
)
•Approved Pro

Everything Computers, LLC

888 East 630th Avenue
4.91(
11
)
•Approved Pro
Customers say: Quick response
16 years of experience
Free onsite estimate

Monday through Saturday 8-6pm The primary focus of Everything Computers, LLC is supporting both Mac and PC computers. We can repair most issues same day and can give recommendation for the best solution long term. Advanced business services for servers and complicated networks and network equipment is also supported. We can also wire home or business surround sound entertainment systems, PA/Intercom systems for businesses, set up and mount TVs and all types of security systems, including, brown-box alarm systems and video cameras. We fully supply modern desk phones, VoIP phone service, and all equipment for business or home office cloud based VoIP to replace ageing business phone systems. Graphic services include both print & web design as well as logo generation. Remote support available for all new and existing customers. Smart Home & Business Automation services & consulting.

"He did a good job. Very Reliable."

Sebastian C on February 2025

Monday through Saturday 8-6pm The primary focus of Everything Computers, LLC is supporting both Mac and PC computers. We can repair most issues same day and can give recommendation for the best solution long term. Advanced business services for servers and complicated networks and network equipment is also supported. We can also wire home or business surround sound entertainment systems, PA/Intercom systems for businesses, set up and mount TVs and all types of security systems, including, brown-box alarm systems and video cameras. We fully supply modern desk phones, VoIP phone service, and all equipment for business or home office cloud based VoIP to replace ageing business phone systems. Graphic services include both print & web design as well as logo generation. Remote support available for all new and existing customers. Smart Home & Business Automation services & consulting.

"He did a good job. Very Reliable."

Sebastian C on February 2025

Mr. Electric of Joplin Area

2002 E Republic Rd
4.50(
55
)
•Approved Pro

Mr. Electric of Joplin Area

2002 E Republic Rd
4.50(
55
)
•Approved Pro
Customers say: Quality work
40 local quotes requested
16 years of experience

Electricity makes the modern world go round. When your power shorts out, call Mr. Electric of Jasper County for quick and convenient repairs. We offer our electrical expertise in Joplin, Carthage and Webb City and the surrounding area. Your home or business is in good hands, whether you're hoping to overhaul the wiring or install ceiling fans. Our promise to you is the best work, whether your needs are common or complicated. We represent Jasper County's electric solutions with pride. Whether it's upgrading antiquated wiring, installing a or putting in a new tankless water heater, you can count on Mr. Electric of Jasper County. We have the power to make things better. Our bonded and insured electricians in Joplin, MO, will be at your service with up-front, flat-rate pricing and workmanship and parts that are guaranteed.

"Overpriced rip off I had to tell tech what was wrong more worried about money than fixing"

Jerry S on September 2022

Electricity makes the modern world go round. When your power shorts out, call Mr. Electric of Jasper County for quick and convenient repairs. We offer our electrical expertise in Joplin, Carthage and Webb City and the surrounding area. Your home or business is in good hands, whether you're hoping to overhaul the wiring or install ceiling fans. Our promise to you is the best work, whether your needs are common or complicated. We represent Jasper County's electric solutions with pride. Whether it's upgrading antiquated wiring, installing a or putting in a new tankless water heater, you can count on Mr. Electric of Jasper County. We have the power to make things better. Our bonded and insured electricians in Joplin, MO, will be at your service with up-front, flat-rate pricing and workmanship and parts that are guaranteed.

"Overpriced rip off I had to tell tech what was wrong more worried about money than fixing"

Jerry S on September 2022

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
125 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

Tri-State Water, Power & Air

.
No reviews yet

Tri-State Water, Power & Air

.
No reviews yet
33 years of experience

Tri-State Water, Power & Air has been provided products designed to improve the comfort and quality of life of our customers since 1992. Our specialties include Automatic Home Standby Generators, Residential Water Treatment Equipment, Plumbing and Water Heater installation and service, Safe Rooms, Solar and Battery Power. We expect customer service excellence and aim to go above and beyond on every call. With 9 locations across 8 states, Tri-State is always ready to serve you.

Tri-State Water, Power & Air has been provided products designed to improve the comfort and quality of life of our customers since 1992. Our specialties include Automatic Home Standby Generators, Residential Water Treatment Equipment, Plumbing and Water Heater installation and service, Safe Rooms, Solar and Battery Power. We expect customer service excellence and aim to go above and beyond on every call. With 9 locations across 8 states, Tri-State is always ready to serve you.

Gunlock Heating and Air, Inc.

9515 Foliage Rd
2.50(
4
)

Gunlock Heating and Air, Inc.

9515 Foliage Rd
2.50(
4
)
40 years of experience

Gunlock Heating & Air started in 1985, and remains one of Joplin's premiere Heating and Cooling Sales and Service companies. We offer local financing. Monthly Newletters with money saving coupons and some terrific local recipes. Gunlock Heating and Air is a dealer for the York equipment line Luxaire. A percentage of every piece of equipment sold goes to the Make a Wish Foundation. We assist with filing rebates, warranties and tax credits. We are on call 25/7 for your convenience. Our Safety and Efficiency Plan Customers can receive up to 30% off parts and filters and are made our priority customers.

"DO NOT HIRE GUNLOCK, specifically do not hire Caleb Gunlock. If possible, to give a lower rating, I would. There is a reason why They are rated so low with only a handful of ratings and only 1 being positive. They were paid to install and hook up an outdoor wood boiler. They came out and claimed to know what they were doing. Signed off on work. Now I am stuck with a outdoor wood boiler system that does not work. It does not heat either the shop or house. The OWB is working perfectly. They did not bleed the system. They fired up the system without checking their pipes. So my pumps ran dry for several hours due to their negligence Just not the parts they were hired to hook up and install. And to make it better my original heat that was working first is now not working. So, I am stuck with no heat with a wife and 2 under 5 kids. They agreed to complete work. Said they completed the work. Which they did not. When I approached them about making it correct Caleb told me to " MAKE MY DAY" This is the worst company I have ever hired. They said that all parts are included when they bid the job. Then tried to make me pay for adapters and argued about that. Caleb Gunlock is a spineless coward. Called me a liar to my face, and when confronted stumbled over his own words. Would not honor the agreement that was listed out on the invoice. caleb gunlock WILL NOT BE A MAN OF HIS WORD AND STAND BEHIND IT!!!! I now need to hire another company to fix what they messed up. I highly suggest someone else that has a better knowledge of how to properly do the work."

Jay W on December 2024

Gunlock Heating & Air started in 1985, and remains one of Joplin's premiere Heating and Cooling Sales and Service companies. We offer local financing. Monthly Newletters with money saving coupons and some terrific local recipes. Gunlock Heating and Air is a dealer for the York equipment line Luxaire. A percentage of every piece of equipment sold goes to the Make a Wish Foundation. We assist with filing rebates, warranties and tax credits. We are on call 25/7 for your convenience. Our Safety and Efficiency Plan Customers can receive up to 30% off parts and filters and are made our priority customers.

"DO NOT HIRE GUNLOCK, specifically do not hire Caleb Gunlock. If possible, to give a lower rating, I would. There is a reason why They are rated so low with only a handful of ratings and only 1 being positive. They were paid to install and hook up an outdoor wood boiler. They came out and claimed to know what they were doing. Signed off on work. Now I am stuck with a outdoor wood boiler system that does not work. It does not heat either the shop or house. The OWB is working perfectly. They did not bleed the system. They fired up the system without checking their pipes. So my pumps ran dry for several hours due to their negligence Just not the parts they were hired to hook up and install. And to make it better my original heat that was working first is now not working. So, I am stuck with no heat with a wife and 2 under 5 kids. They agreed to complete work. Said they completed the work. Which they did not. When I approached them about making it correct Caleb told me to " MAKE MY DAY" This is the worst company I have ever hired. They said that all parts are included when they bid the job. Then tried to make me pay for adapters and argued about that. Caleb Gunlock is a spineless coward. Called me a liar to my face, and when confronted stumbled over his own words. Would not honor the agreement that was listed out on the invoice. caleb gunlock WILL NOT BE A MAN OF HIS WORD AND STAND BEHIND IT!!!! I now need to hire another company to fix what they messed up. I highly suggest someone else that has a better knowledge of how to properly do the work."

Jay W on December 2024

A to Z Services

2733 E Battlefield St
4.69(
13
)

A to Z Services

2733 E Battlefield St
4.69(
13
)
Customers say: True professional
26 years of experience

A to Z Services of Springfield, MO is an A+ ,5 Star rated company which is Veteran owned and operated--serving the Ozarks since 1979. We offer installation and service on all makes and models of plumbing, electrical, and HVAC equipment. As well as complete maintenance, repair, and installation services for home or commercial settings. Let us provide you with exceptional workmanship at a reasonable rate.

"A to Z came in and ran gas lines for my gas range (convert from electric). Very happy with scheduling, time the project took, and professionalism of plumber! A to Z also converted our wood burning fireplace into an infrared electric fireplace and custom built trim to hold the new fireplace in the opening. My husband and I are elderly and the wood fireplace was of no use to us due to the physical aspects of carrying wood and cleaning ash. The electric fireplace is the perfect solution to add warmth while keeping the utility bills low! We have had several home items addressed (electrical, plumbing, HVAC, handyman tasks) by this company and would highly recommend them for all your home needs!"

Kathy S on May 2021

A to Z Services of Springfield, MO is an A+ ,5 Star rated company which is Veteran owned and operated--serving the Ozarks since 1979. We offer installation and service on all makes and models of plumbing, electrical, and HVAC equipment. As well as complete maintenance, repair, and installation services for home or commercial settings. Let us provide you with exceptional workmanship at a reasonable rate.

"A to Z came in and ran gas lines for my gas range (convert from electric). Very happy with scheduling, time the project took, and professionalism of plumber! A to Z also converted our wood burning fireplace into an infrared electric fireplace and custom built trim to hold the new fireplace in the opening. My husband and I are elderly and the wood fireplace was of no use to us due to the physical aspects of carrying wood and cleaning ash. The electric fireplace is the perfect solution to add warmth while keeping the utility bills low! We have had several home items addressed (electrical, plumbing, HVAC, handyman tasks) by this company and would highly recommend them for all your home needs!"

Kathy S on May 2021

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Generator Install questions, answered by experts

Yes, in some locations, it is required by the National Electric Code (NEC) to have a transfer switch installed for electrical emergencies. In addition to following electrical code, generator transfer switches ensure your home is fully protected during a power outage. By switching the power from the main breaker to the generator breaker, you can seamlessly operate your HVAC, lights, appliances, devices, and more during an emergency. 

It’s usually better to repair your generator if it isn’t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around $300 on average, while installing a new whole-house generator costs around $5,000 on average. The only exception is if you know your generator is reaching the end of its useful life, usually between 30 and 40 years. If you have an older generator, you could face multiple repairs in the coming years, which might mean that a full replacement will be more cost-effective over time.

In most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home generators. A permit for a generator usually costs between $50 and $250, depending on where you live. Your electrician or certified generator installer will usually pull the permit for you—and might be required to do so by your building department—but you’ll be on the hook for the cost of the permit. You should ask your installer before agreeing to any work if they will pull the necessary permits for your project.

When installed and used correctly, generators are safe to use. The most critical generator safety tips to keep in mind are:

  • Never use a portable generator inside an enclosed space, as the carbon monoxide exhaust it creates is lethal.

  • Never attempt to connect your generator to your home’s electrical panel independently; hire a professional for this dangerous job.

  • Never overload your generator by connecting more appliances than for which it’s rated; you can damage your generator and appliances or even cause a fire.

When choosing the right size generator for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 watts

Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running. 

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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