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Verified Reviews for Generator Install pros in Irwindale, CA

*The Angi rating for Generator Install companies in Irwindale, 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 Irwindale, 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 June 24, 2026

Find Generator install pros in Irwindale

Avatar for LT Generators
LT Generators
4.3(
82
)

Serving Irwindale, 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
26 neighbors recently requested a quote
Recommended by89%of homeowners
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Avatar for Gary & Son Electric
Gary & Son Electric
5.0(
41
)

Serving Irwindale, 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."
2016_La Canada Flintridge
Finished Install
2016_La Canada Flintridge
Open Panel View
Service Entrance Riser

+34

Response time9 hrs
Response rate100%
6 neighbors recently requested a quote
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Avatar for Casaroja Electric Inc
Casaroja Electric Inc
5.0(
18
)

Serving Irwindale, 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."
Panel upgrade
Panel upgrade
Panel upgrade
Panel upgrade
Panel upgrade

+1

5 neighbors recently requested a quote
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Avatar for ZERO ELECTRIC
ZERO ELECTRIC
4.9(
10
)

Serving Irwindale, 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

1 neighbors recently requested a quote
Recommended by70%of homeowners
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Avatar for Politek Electric, Inc.
Politek Electric, Inc.
4.6(
22
)

Serving Irwindale, CA and surrounding areas

Approved

In business since 1992

Free estimates

Credit card accepted

"Robert was on time, gave me a decent estimate to install 2 light fixtures and did the work immediately and was done after an hour."
Install
M.C.C.
Our Trucks
Industrial controls
Deck above subterranean parking.

+1

Response time9 hrs
Recommended by100%of homeowners
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Avatar for Accurate Electric, Plumbing, Heating and Air
Accurate Electric, Plumbing, Heating and Air
4.5(
14
)

Serving Irwindale, 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!"
Jeff Seale - Owner
Albert Aragon - Dispatch
Cheri Fortner - Operations Manager
Dan Hartman - Journeyman Plumber
Eric Bribiesca - Comfort Advisor

+23

18 neighbors recently requested a quote
Recommended by81%of homeowners
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Trout Electric
4.3(
20
)

Serving Irwindale, 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 Granny Electric
Granny Electric
4.6(
11
)

Serving Irwindale, 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
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Advance Electric
4.3(
11
)

Serving Irwindale, 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!!"
Response time10 hrs
1 neighbors recently requested a quote
Recommended by50%of homeowners
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Home Pro Remodeling & Construction, Inc.
4.1(
31
)

Serving Irwindale, 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
Request Quote
...
Showing 1-10 of 170
Generator Install questions, 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.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

DIY is possible for basic setups. Professional installation ensures safe and proper electrical connections.

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.

In most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home generators. A permit for a generator usually costs between $50 and $250, depending on where you live. Your electrician or certified generator installer will usually pull the permit for you—and might be required to do so by your building department—but you’ll be on the hook for the cost of the permit. You should ask your installer before agreeing to any work if they will pull the necessary permits for your project.

The Irwindale, CA homeowners’ guide to generator installs

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

See all articles