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Verified Reviews for Generator Install pros in Longmont, CO

*The Angi rating for Generator Install companies in Longmont, CO 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 Longmont, CO 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 July 19, 2025

Find Generator install pros in Longmont

Avatar for Ross Electrical Contracting, LLC
Ross Electrical Contracting, LLC
4.8(
24
)
Portable Generator - Install

Serving Longmont, CO and surrounding areas

Approved

In business since 2016

Customers say: Quick response

"Cameron was courteous and efficient. He did a great install for us and we would highly recommend him. We will definitely use him for future electrical work."
Response time1 day
Recommended by100%of homeowners
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Avatar for MG Power Electric, LLC
MG Power Electric, LLC
5.0(
19
)
Generator - Install - For BusinessPortable Generator - Install

Serving Longmont, CO and surrounding areas

Approved

In business since 2024

Emergency services offered

Warranties offered

"Installing electrical circuit for new system in remodel building.."
Kitchen remodel
Kitchen remodel
18 neighbors recently requested a quote
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Avatar for Absolute Electrical, Heating & Cooling, LLC
Absolute Electrical, Heating & Cooling, LLC
4.3(
328
)
Fixed Generator - Install

Serving Longmont, CO and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Installed one 40-amp circuit breaker. No difficulty with the installation, but the price was rather expensive."
Mini Split
Heated driveway
Furnace Inspection
Laying conduit for exterior electrical work
Electrical Panel Replacement

+34

Response time1 day
Recommended by91%of homeowners
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Avatar for Precision Service Electric, Inc.
Precision Service Electric, Inc.
5.0(
10
)
Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair+2 more

Serving Longmont, CO and surrounding areas

Approved

In business since 1994

Warranties offered

Small jobs welcome

"Great quick service at a fair price for lighting and fan installations. Bill, Kyle and Melinda were a friendly and efficient team."
Pop up countertop outlets
Pop up countertop outlets
Downtown Restaurant
Downtown Restaurant
New Kitchen Island

+12

Response time1 day
Response rate90%
36 neighbors recently requested a quote
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Avatar for Just In Time Electrical Services
Just In Time Electrical Services
4.9(
32
)
Fixed Generator - InstallPortable Generator - Install

Serving Longmont, CO and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"Just In Time installed a new attic fan and temperature control. The experience was great from start to finish. The first visit was a diagnosis and then an appointment was scheduled to replace the old fan with a new fan. The install of the fan was an excellent experience. The crew was able to arrive early, they confirmed it was OK to show up early prior. The install went smooth, the crew was efficient, friendly and cleaned up in no time. I would recommend and use Just in Time in the future!"
Response time6 hrs
5 neighbors recently requested a quote
Recommended by86%of homeowners
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Apex Industrial
5.0(
8
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+2 more

Serving Longmont, CO and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

We are a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 20 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

9 neighbors recently requested a quote
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Avatar for Precision Plumbing Heating Cooling Electric
Precision Plumbing Heating Cooling Electric
4.5(
198
)
Fixed Generator - Install

Serving Longmont, CO and surrounding areas

Approved

In business since 1982

Warranties offered

Credit card accepted

"From this experience with Precision Electrical, I can conclude that electrical is as excellent as Plumbing, which I have used for many years. If there is ever a problem with so,etching Precision has installed, they will fix it."
Response time6 days
16 neighbors recently requested a quote
Recommended by91%of homeowners
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Avatar for DN Electric LTD
DN Electric LTD
5.0(
7
)
Portable Generator - Install

Serving Longmont, CO and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

DN ELECTRIC LTD proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today! \n

Electric
Basement receptacles
Basement receptacles
Basement receptacles
Basement receptacles

+1

10 neighbors recently requested a quote
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Avatar for Tipping Hat Plumbing Heating & Electric, LLC
Tipping Hat Plumbing Heating & Electric, LLC
3.9(
419
)
Fixed Generator - InstallPortable Generator - Install

Serving Longmont, CO and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2000

Free estimates

Emergency services offered

"Excellent work installing my dimmer switches in my new home . Daniel was very professional and great to work with . Thank you !"
Tipping Hat
Tipping Hat
tipping hat
Response time11 hrs
Response rate100%
121 neighbors recently requested a quote
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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.

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. 

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

Yes, in most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home models. Because these installations involve significant alterations to your home's electrical system and produce exhaust fumes, local governments often require a permit or inspection for safety purposes. A generator permit typically costs between $50 and $250, depending on your location. Your electrician or certified installer can usually handle the permitting process for you, but you will be responsible for the cost. It's a good practice to confirm with your installer that they will pull all necessary permits before work begins.

As a safety measure, you should always turn off the main breaker while operating your generator’s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.

The Longmont, CO 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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