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

Serving Duarte, 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

6 neighbors recently requested a quote
Avatar for ZERO ELECTRIC
ZERO ELECTRIC
4.9(
10
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business+1 more

Serving Duarte, 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
Trout Electric
4.3(
20
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Duarte, CA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"They were prompt and reasonable. They were able to re-wire our kitchen and pull extra electric from the electric main. They also cleaned up the electrical panel and replace bad breakers The only issue we had is that some of the outlets were not level and the right depth for the 1/2" drywall that was going to be installed."
Recommended by88%of homeowners
Avatar for Granny Electric
Granny Electric
4.6(
11
)
Portable Generator - Install

Serving Duarte, 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
Avatar for Jspark Electric Inc
Jspark Electric Inc
5.0(
3
)
Fixed Generator - InstallPortable Generator - Install

Serving Duarte, CA and surrounding areas

Approved

In business since 2017

Free estimates

Offers commercial services

"Jose and team were amazing. The price was fair. The guys worked efficiently and clean. I couldn't be happier. They installed a Level 2 charger in my carport and added a main transfer switch to a location away from the main breaker box. We are very happy."
Electrical
Electrical
Electrical
Electrical
Electrical

+51

9 neighbors recently requested a quote
Home Pro Remodeling & Construction, Inc.
4.1(
31
)
Portable Generator - Repair

Serving Duarte, CA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"I hired home pro remodeling to put pavers on my back yard and to install flloring thorough out the whole house I'm super setasfied with the work and the service . The company also provided me great financial options which I used thank you kobi Leo and Lucas for your great service . Highly recommend them for everyone"
Response time5 days
Recommended by77%of homeowners
Avatar for Josh
Josh
5.0(
3
)
Portable Generator - Repair

Serving Duarte, CA and surrounding areas

Approved

Small jobs welcome

Hi, I’m Josue!\nReliable, detail-oriented, and customer-focused handyman with experience in furniture assembly, TV mounting, ceiling fan installation, light fixture replacement, outlet and switch installation, shelving, picture hanging, and general home improvement tasks.\nI take pride in delivering quality work, arriving on time, and treating every home with respect. My goal is to provide safe, professional, and efficient service while ensuring complete customer satisfaction.\nI am bilingual (English & Spanish) and have experience working directly with customers, solving problems, and completing projects with attention to detail.\nServices include:
• Furniture Assembly
• TV Mounting
• Ceiling Fan Installation
• Light Fixtures & Chandeliers
• Outlet & Switch Replacement
• Shelving Installation
• Curtain Rod Installation
• Picture & Mirror Hanging
• Minor Electrical Work
• General Handyman Services\nI look forward to helping you complete your next project!

Apartment complex
Apartment complex
Apartment complex
Apartment complex
Apartment complex

+5

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Showing 1-10 of 174
Generator Install questions, answered by experts

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.

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

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.

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.

Portable generators provide backup power for essential appliances during outages and are easy to relocate.

The Duarte, CA homeowners’ guide to generator installs

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