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

Serving Frederick, CO and surrounding areas

Approved

In business since 2016

Customers say: Quick response

"I don't usually write reviews because it's time consuming and I often don't find providers to be exceptionally good or bad - but I definitely read them - so consider this worth double weight: I thought Mr. Ross did a wonderful job explaining the full extent of the project, and how he would handle the details. Super knowledgeable! He got all the permits, fixed the roof patch that was needed, and cleaned up the mess. His crew was clean cut and on-time, and he stuck by his quoted price. I will hire him again for a shed electric project I have coming up. Great work, Ross stands by his name."
Response time1 day
Recommended by100%of homeowners
Avatar for Absolute Electrical, Heating & Cooling, LLC
Absolute Electrical, Heating & Cooling, LLC
4.3(
328
)
Fixed Generator - Install

Serving Frederick, CO and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Absolute Electrical did a great job of installing our QuietCool fan. They were very professional, thoughtful (quietly closed front door as they went in and out) and cleanly (thoroughly cleaned work area). I would recommend them to any of our neighbors and friends."
Mini Split
Heated driveway
Furnace Inspection
Laying conduit for exterior electrical work
Electrical Panel Replacement

+34

Response time1 day
Recommended by91%of homeowners
Avatar for Just In Time Electrical Services
Just In Time Electrical Services
4.9(
32
)
Fixed Generator - InstallPortable Generator - Install

Serving Frederick, CO and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"Excellent experience, highly satisfied! Based on the 5 star reviews on Nextdoor, I called Just In Time Electrical to have some electrical issues fixed and new lighting added. Michael came out within a couple days to do an estimate and returned a couple days later to do the work. My home presented a few special challenges, but Michael and another technician, John, worked through them with patience and expertise, and they successfully completed all 3 projects with professionalism and to my specs. I am thrilled with the new living room recessed lighting, remote wall switch solution in another room, as well as the corrections made to my bathroom 3-way lighting. Thanks guys!"
Response time6 hrs
5 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for DN Electric LTD
DN Electric LTD
5.0(
7
)
Portable Generator - Install

Serving Frederick, CO and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

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

5 neighbors recently requested a quote
Avatar for Salzano Services
Salzano Services
4.3(
27
)
Fixed Generator - Install

Serving Frederick, CO and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

In 1987, Jerry Salzano embarked on his journey as a union electrician in the bustling streets of New York City. He honed his skills for 8 years, gaining invaluable experience in NYC. In 1999, a vacation in Colorado changed everything. Captivated by its beauty & the warmth of its community, Jerry made a life-altering decision & moved to Colorado, bringing his tools & vision for a different kind of service company.

26kW Kohler Gen.
Kohler Load Modules
200A Kohler ATS
Emergency Repair
Mini Split Install

+2

2 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Anderson Diagnostics & Repair LLC
Anderson Diagnostics & Repair LLC
5.0(
9
)
Portable Generator - Repair

Serving Frederick, CO and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

"I hired Mark with Anderson Diagnostics on 2 separate occasions. Both were very positive experiences. The first time Mark changed out interior and exterior door hardware, and did drywall/wall texture repair. The second time I hired him to paint the interior of my home as well as change the baseboards in my master bedroom. He does excellent quality work and communicates very well. I also feel like he has integrity. I plan to hire him for future jobs."
Night Lite
Dusk
Restored Gates
Custom Structures
Doors/Windows/Screen

+7

3 neighbors recently requested a quote
Avatar for OtM ELECTRIC LLC
OtM ELECTRIC LLC
5.0(
3
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Frederick, CO and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

We take pride in delivering expert workmanship, reliable service, and clear communication on every project. From start to finish, our mission is to provide high‑quality results and complete customer satisfaction. We listen carefully to our customers’ needs and maintain a professional, respectful approach throughout the entire process. Our reputation is built on safety, quality, and dependable service—no matter the size of the job.

Response time2 days
2 neighbors recently requested a quote
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Generator Install questions, answered by experts

Generators are safe to use as long as they are installed and operated correctly according to the manufacturer's recommendations. The most critical safety tips are to never use a portable or fuel-powered generator inside an enclosed space due to the risk of lethal carbon monoxide poisoning; always operate it outdoors where fumes can dissipate away from your home. Additionally, never attempt to connect a generator to your home’s electrical panel yourself—hire a professional to ensure the setup meets safety standards. Finally, avoid overloading the generator by not connecting more appliances than it is rated for, as this can damage your equipment or cause a fire.

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.

Costs depend on generator type, labor, and additional wiring or transfer switch requirements.

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.

Whole-house generators need to be installed on level ground several feet away from walls and other objects. Because they tap into the electrical system directly, they usually need to be close to your home electrical panel for a transfer switch installation. It also helps with installation if they are near to a gas line or propane tank installation.

The Frederick, CO homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.