*The Angi rating for Generator Install companies in Monrovia, CA 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 Monrovia, CA 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 August 17, 2025
Serving Monrovia, CA and surrounding areas
Approved
Super Service Award Winner
In business since 1988
Free estimates
Emergency services offered
"A true professional. Went above and beyond to help explain to me all of my options when hooking up a generator to my home. Work was done quickly and I was very impressed."
+34
Serving Monrovia, CA and surrounding areas
Approved
In business since 1983
Free estimates
Warranties offered
"Andrew is the best! He went above and beyond to help us fix two more issues we found during the electrical outlet installation. And he is very knowledgeable and honest at his work and we would definitely use him again and highly recommend everyone to use Andrew for any electrical needs. Thanks again for all your help Andrew!"
Serving Monrovia, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Emergency services offered
"Perfect and smooth journey, Jorge came pre instillation to check the electrical panel and where the the charger was going to be installed and after the review he text me the cost of parts and installation, after I received the charger he came on time and the job was completed. I was updated by text messages throughout the process. In the future if I need any electrical work I definitely use JK Flores Enterprise."
+28
Serving Monrovia, CA and surrounding areas
Approved
In business since 1968
Free estimates
Warranties offered
"William and his team did a fantastic job upgrading our meter panel. They took care of all the permits and had the job done on time and on schedule. They were extremely communicative throughout the entire process and I would use them for all electrical services in the future."
Serving Monrovia, CA and surrounding areas
Approved
In business since 1977
Free estimates
Warranties offered
"Mr. Johnson and his crew have performed a fewjobs from lighting installations, to doorbell repair, to rewiring. Every job has been done well and at a reasonable price. The workers were respectful and very helpful at explaining the work they did before they left. What really set this outfit apart is Mr. Johnson himself. He always returns calls, his crews show up on time and perform the work expediently. On top of this, when I have had questions about other electrical concerns, Mr. Johnson takes time to have a phone call to consult on the issue. Mr. Johnson and his company are of high integrity and I would highly recommend them for any residential electric work."
Serving Monrovia, CA and surrounding areas
Approved
In business since 1993
Free estimates
Emergency services offered
"They came the next day and finished installing my EV charger within an hour. Quick, efficient, professional."
Serving Monrovia, CA and surrounding areas
Approved
In business since 2021
Free estimates
Offers commercial services
"I recently had Narek install a Tesla wall connector in my garage in Los Angeles, and I could 't be happier with the service I received. Narek was not only professional and knowledgeable, but he also got the permit required for the installation very quickly. He arrived on time and took the time to explain the installation process and answer any questions I had. The installation itself was done quickly and efficiently, and Narek made sure to clean up after himself once the job was complete. He also took the time to show me how to use the wall connector and ensure that it was working properly before he left. Overall, I would highly recommend Narek to anyone looking to install a Tesla wall connector. His professionalism, attention to detail, and expertise made the process easy and stress-free, and I am thrilled to now have a reliable and efficient way to charge my electric vehicle at home."
Serving Monrovia, CA and surrounding areas
Approved
In business since 1995
Free estimates
Emergency services offered
"I thought Paul and his installer were rock stars. I bought a new fan and the ceiling fan company where I bought it couldn't do a quick installation so I looked in here at Angies list and found that Paul at Fairway Electric was highly recommended. And the review was more than accurate. Paul responded immediately and had someone out the next day and installed my ceiling fan (something i did NOT want to do myself). And he even charged me a bit less than Paul quoted. Later---there was a frequency problem with the ceiling an light that made it dim occasionally---(caused by a neighbor who had a remote control with a similar frequency). Paul sent his repairman out (no additional charge) and changed the frequency. I'd call Paul back in a millisec if I had another ceiling fan installation or for electrical work based on my excellent experience dealing with him."
Serving Monrovia, CA and surrounding areas
Approved
Emergency services offered
Warranties offered
Offers commercial services
"Sergio and his assistant installed an EV charger at my place, and they did an amazing job. I’m so glad I hired them. Their price was reasonable compared to other contractors. I highly recommend them and would definitely use their company again for any future jobs."
+1
Serving Monrovia, CA and surrounding areas
Approved
In business since 1983
Free estimates
Emergency services offered
"John of JSA electrical installed new LED lighting on our front lawn olive trees: in our patio area; and our backyard all of which beats the cost of old flood lights and are much brighter ! He's thorough and very professional taking pride in his work. If something goes wrong at all he is happy to return and solve the problem. He has my recommendation for anyone who needs electrical work done inside or outside their home whether it's a small or a large job!"
+20
When maintained properly, a whole-house generator can last up to 20 years. Costs to maintain and repair generators vary by location and type of generator, but you can expect to pay about $150 to $300 per year for annual generator maintenance checks. An experienced generator service technician will inspect your generator’s engine filter, starting mechanism, fuel, lubrication, and coolant levels to keep your generator in good working condition for as long as possible.
Installing a whole-house generator costs about $5,000 on average. Prices range from $1,550 to $8,500, depending on size, brand, fuel type, and assembly. The size of your whole-house generator is the most significant cost factor, with large homes with high energy demands costing the most to power. Types of whole-home generators include:
Portable generators with 1kW–7.5kW capacity: $500–$2,000
Partial generators with 9kW–20kW capacity: $2,000–$6,300
Whole-house generators with 22kW–48kW: $5,000–$18,000
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.
Here’s what you can run with different wattages and types of generators:
Portable generator:
2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers.
4,000 watts will keep two large appliances operating and a few smaller devices.
8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.
Partial to whole-house generator:
20,000 watts and above will make it seem like your home’s power is still on.
The value of installing a whole-house generator is that your home has guaranteed power, even if the power grid in your area is down. Whether a whole-house generator is worth installing in your home depends on how often you use it, your home’s location, and your lifestyle. For example, installing a whole-house generator is likely worth it if you:
Experience frequent or prolonged power outages
Work from home
Store a lot of cold food
Have a sump pump
Have a pump for well water
Use electronic medical devices
Live in a climate requiring heating or cooling
From average costs to expert advice, get all the answers you need to get your job done.
The cost to install a whole-house generator in Los Angeles, CA varies based on factors like generator size, fuel type, and installation complexity. Learn the typical price range and what influences your total cost.
The average cost of a whole-house generator falls between $5,000 and $25,000. Keep reading to learn how much you can expect to spend.
The cost to install a generator transfer switch depends on several factors. Our guide will help you understand all of the costs.
Say goodbye to blackouts by learning how to install a generator transfer switch. By following our guide, you’ll have a solution to nonstop power.
Wondering who to hire to install a generator? Consult this guide to learn who to hire to install a generator or a transfer switch.
Whole house generators are a power alternative that can deal with frequent blackouts and other problems. Here’s how they function.
