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Verified Reviews for Generator Install pros in Walnut, CA

*The Angi rating for Generator Install companies in Walnut, 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 Walnut, 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 December 23, 2025

Find Generator install pros in Walnut

Avatar for LT Generators
LT Generators
4.3(
82
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Walnut, CA and surrounding areas

Approved

In business since 1995

Free estimates

Warranties offered

"I recently had a whole-house generator installed by Nick and his crew. I must say it was a pleasure dealing with this company, from the office staff to the installers. Everyone was so accommodating and mindful of my concerns and requests. The parts and tools they brought took up half of my back yard but at completion of the job, which took a full day, everything was removed and all my planters and other things were put back as before. A very seamless operation indeed. I would not hesitate to recommend LT generators."
22kw Generac Natural Gas Generator
27kw Generac Natural Gas Generator
Kohler Liquid Cooled
27kw Generac Natural Gas Generator
Kohler Air Cooled 20kW

+12

Response time2 days
31 neighbors recently requested a quote
Recommended by89%of homeowners
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Avatar for Casaroja Electric Inc
Casaroja Electric Inc
5.0(
19
)
Fixed Generator - InstallPortable Generator - Install

Serving Walnut, 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

4 neighbors recently requested a quote
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Avatar for Indaspec, LLC
Indaspec, LLC
5.0(
15
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Walnut, CA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"Installer Saul was great to work with. He arrived early and handled the inspector."
Damaged Panels
Damaged Panel Removal
Damaged Panel Close Up
New Panel Install
New Panel- a perfect match

+9

Response time1 day
2 neighbors recently requested a quote
Recommended by64%of homeowners
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Avatar for ZERO ELECTRIC
ZERO ELECTRIC
4.9(
10
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business+1 more

Serving Walnut, 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."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

1 neighbors recently requested a quote
Recommended by70%of homeowners
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Trout Electric
4.3(
20
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Walnut, 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
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Avatar for Orozco's Electric, Inc.
Orozco's Electric, Inc.
5.0(
5
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Walnut, CA and surrounding areas

Approved

In business since 2023

Emergency services offered

Small jobs welcome

"on time and finish the job, careful, precise and friendly."
Panel Layout
Panel Progress
More Panel Progress
Main Water Bond
Response time4 hrs
Response rate100%
7 neighbors recently requested a quote
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Avatar for EnergyAid
EnergyAid
3.6(
130
)
Fixed Generator - RepairGenerator - Repair - For Business

Serving Walnut, CA and surrounding areas

Approved

In business since 2012

Emergency services offered

Warranties offered

"This was a very good experience! The 2 technicians arrived on time, were very professional and polite, and even went above and beyond what I was expecting. If anyone needs any solar-related repairs or installation, I would highly recommend Energy Aid"
Voltage Testing
Solar Panel Removal and Reinstall
Two Batterys
Bird Skirt
Communication Repair

+20

Response time1 day
Response rate97%
7 neighbors recently requested a quote
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Showing 1-10 of 182
Generator Install questions, answered by experts

Yes. You can connect your home back-up battery to a generator with its designated charger. Be sure that the output of the generator matches the input requirements for the battery for best results.

Setting up utilities on a vacant property usually takes at least a few months, or between 6 weeks to 16 weeks. This process requires working with the local planning and zoning department, hiring a building contractor or engineer to design the utility layout, securing permits, laying the lines, and connecting the utilities.

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.

The average cost to install a home generator is $5,200, but total costs can range from $500 to $18,000 or more. The final price depends on several factors, including the generator's size, type, brand, fuel source, and the cost of labor and assembly. The generator's size is the most significant cost factor, as units that can power larger homes with higher energy demands cost more.

Cost breakdowns by generator type are typically as follows:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500–$2,000

  • Partial-Home Generators (9kW–20kW): $2,000–$6,500

  • Whole-House Generators (22kW–48kW): $5,000–$18,000

To ensure you get the right size unit for your needs without overpaying, consider hiring an electrician to calculate the electrical load of your essential appliances. It is also recommended to get at least three quotes from qualified installers to find the best fit for your budget.

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 Walnut, CA 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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