*The Angi rating for Generator Install companies in Diamond Bar, 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 Diamond Bar, 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 September 29, 2025
Serving Diamond Bar, 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!"
+1
Serving Diamond Bar, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2014
Free estimates
Credit card accepted
"Quinn was professional and courteous. In addition to the EV charger installation, he also installed 2 new circuits with breakers and new conduit. All the work looked amazing and he and his associate cleaned up everything when they were done. Couldn’t have been happier with the work done. Would highly recommend Quality Electric."
Serving Diamond Bar, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2021
Free estimates
Credit card accepted
"Highly Recommended! We have hired Zero Electric to do several jobs at our apartment complex including installing a generator, EV chargers, new panel, and even installing recessed lighting in the units. They handled all aspects of the projects and had top notch communication throughout. The team has always been quick and professional. We will continue using Zero Electric for our electrical needs."
+1
Serving Diamond Bar, CA and surrounding areas
Approved
In business since 2015
Free estimates
Emergency services offered
"Showed up on time and were done expeditiously. I had a question afterward and they replied quickly."
+9
Serving Diamond Bar, CA and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
"I worked with the owner and the field supervisor - both extremely nice & very professional. I hope I have additional work needed in the future just so that I can work with them again!"
+23
Serving Diamond Bar, 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."
Serving Diamond Bar, CA and surrounding areas
Approved
In business since 2009
Free estimates
Credit card accepted
"Ricardo is the best electrician I?ve ever hired. Was very professional and friendly to talk to. Honest pricing for a meter panel upgrade. Did what he said he was going to. Also checked out some lighting fixtures I wanted to get installed in my home as I?ve had several quotes and they were just outrageously priced but he gave me the best price out of 6 electricians! Will definitely hire Rick for all my future electrical needs!!"
Serving Diamond Bar, CA and surrounding areas
Approved
In business since 2015
Free estimates
Emergency services offered
"I had an amazing experience with MDH Roofers! From start to finish, they were professional, efficient, and thorough. The team showed up on time, worked diligently, and left my property spotless once the job was done. The quality of the roofing work exceeded my expectations. They took the time to explain the process and answered all my questions patiently, making me feel confident in their expertise. I could not be happier with the result my new roof looks fantastic! If you re looking for a trustworthy and skilled roofing company, I highly recommend MDH Roofers."
+32
Serving Diamond Bar, CA and surrounding areas
Approved
In business since 2019
Free estimates
Credit card accepted
"This was an usual project. It was redoing a mini bar. Hard to find a contractor that would do it or had the time. Homepro was great lead by project manager Shir Hadad. Jumped right in there and took it on and got the job done. Really appreciate their professionalism."
Serving Diamond Bar, CA and surrounding areas
Approved
Free estimates
Offers commercial services
"The Tech was very professional and on time. He diagnosis the problem within a minimum of time. I was over all happy and satisfied with the job he did."
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 cost to install a generator transfer switch depends on several factors. Our guide will help you understand all of the costs.
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.
Generators should give you peace of mind, but you’ll only get that if your installer knows what they’re doing. Learn how to hire a pro and what red flags to look for.
Whole home generator installations require a professional hand. Read this guide to help you decide which generator is best for your home.
Wondering who to hire to install a generator? Consult this guide to learn who to hire to install a generator or a transfer switch.
