Top-rated generator install pros.

Best generator install pros near Monrovia, CA

Enter your zip and get matched with up to 5 pros

Need a pro for your generator install project in Monrovia, CA?

Select your specific project to find the pro for you.

Top-Rated Generator install pros in Monrovia - Updated Nov 2026

Avatar for Casaroja Electric Inc
Casaroja Electric Inc
5.0(
19
)
Fixed Generator - InstallPortable Generator - Install

Serving Monrovia, CA and surrounding areas

Approved

Emergency services offered

Warranties offered

Offers commercial services

"Sergio did a fantastic job! Very happy with the clean install of my tier 2 charger and he added a plug down below my panel. Would recommend for any sort of EV charging installs! Clear communicator, showed up when he said he would and his services were well-priced!"
Panel upgrade
Panel upgrade
Panel upgrade
Panel upgrade
Panel upgrade

+1

1 neighbors recently requested a quote
JSA Electrical Services, Inc.
4.8(
30
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Monrovia, CA and surrounding areas

Approved

In business since 1983

Free estimates

Emergency services offered

"What can you say about the work of an electrician their work is seldom seen but when you need power they are the most important person in your arsenal of home repair. JSA Electrical Services came highly recommend by our ac installation company. We were not disappointed and asked for estimates on other projects. His prices were more than fair and he was able to put in an sub panel that was need to accommodate the new air conditioner. In one day we were able to enjoy our new ac during the hottest day in July."
OUR WORK
OUR WORK
OUR WORK
OUR WORK
OUR WORK

+20

Recommended by100%of homeowners
Avatar for ZERO ELECTRIC
ZERO ELECTRIC
4.9(
17
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Monrovia, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Credit card accepted

"My experience with Zero Electric was great! James was extremely knowledgeable about home generators and walked us through several pricing options that fit our budget. Their work was clean and efficient and I will definitely be hiring him in the future for our electrical issues."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

6 neighbors recently requested a quote
Recommended by41%of homeowners
Avatar for Electrical Bzzz
Electrical Bzzz
5.0(
52
)
Fixed Generator - InstallPortable Generator - InstallGenerator - Install - For Business

Serving Monrovia, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2004

Free estimates

Emergency services offered

"Robert did an amazing job installing several 3-way Leviton WiFi smart switches in the stairwell of my home. He was very professional, detail oriented with the install, and did a great job sharing the info with me on how he set things up! The work areas were all cleaned up and he took his time to make sure everything was pristine. I definitely recommend Robert if you’re looking to have any electrical work done. Thank you!"
Ross panel upgrade
Panel upgrade
Response time8 hrs
Response rate94%
24 neighbors recently requested a quote
Trout Electric
4.3(
20
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Monrovia, CA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"The electricians installed two outlets and one LED light fixture in a very professional manner. They provided good advice and suggested that I consider rejunvenating my electrical panel as my home is now 26 years old without pressuring me to have it done immediately. I will definitely consider Trout Electric when I decide to have it done."
Recommended by88%of homeowners
Avatar for Granny Electric
Granny Electric
4.6(
11
)
Portable Generator - Install

Serving Monrovia, CA and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

"I am grateful for the excellent work and advice provided by Matt. He installed security cameras, fixed some problems with parts, installed and even helped me choose and buy indoor and outdoor lighting, found and fixed some faulty installations. He was kind, professional, communicative and helpful. I fully trust and highly recommend Granny Electric"
Granny Electric
Granny Electric
Granny Electric
Recent Projects
Recent Projects

+6

Response time11 hrs
Recommended by90%of homeowners
Home Pro Remodeling & Construction, Inc.
4.1(
31
)
Portable Generator - Repair

Serving Monrovia, CA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"I had my garden and bathroom remodel done. Albert and Samuel were professional, friendly, and a delight to work with. They're responsive and reliable. I also like the subcontractors whom they used on my project. They kept me informed of everything and I appreciate their excellent work."
Response time5 days
Recommended by77%of homeowners
...
Showing 1-10 of 194
Generator Install FAQs, answered by experts

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.

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.

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

Generally, you’ll want to keep between 60 and 70 feet between the generator and the transfer switch. There are a few reasons for this, including:

  • The distance reduces the noise coming from the generator into your home.

  • It increases efficiency because you won’t have a voltage drop from this short of a distance.

  • Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. 

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 Monrovia, CA homeowners’ guide to generator installs

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