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Verified Reviews for Generator Install pros in Saint Helena, CA

*The Angi rating for Generator Install companies in Saint Helena, 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 Saint Helena, 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 October 29, 2025

Find Generator install pros in Saint Helena

Avatar for Boost Electric, LLC
Boost Electric, LLC
5.0(
13
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Saint Helena, CA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Boost Electric got the job done as agreed. I appreciated the open communications, quality of work, and timeliness of delivery."
Response time9 hrs
Response rate100%
10 neighbors recently requested a quote
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Warner Electric
5.0(
6
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Saint Helena, CA and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"Steve and his team have done a number of jobs for me from installing light fixtures to adding additional outlets in the bathroom which required going underneath the house. They are professional, timely, courteous, clean, reliable and reasonably priced!"
7 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Ongaro & Sons
Ongaro & Sons
3.8(
27
)
Fixed Generator - Install

Serving Saint Helena, CA and surrounding areas

Approved

In business since 1932

Free estimates

Warranties offered

"From their sales rep to their installers and inspectors, all were very nice to work with and responded quickly to my request and did a wonderful job."
Electrical: EV Charger Installations
HVAC
Electrical: Whole Home Generator
HVAC
Electrical: Chandelier Fixture Installation

+57

7 neighbors recently requested a quote
Recommended by88%of homeowners
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Avatar for Vilroy
Vilroy
New to Angi
Portable Generator - Repair

Serving Saint Helena, CA and surrounding areas

Approved

Free estimates

Warranties offered

Small jobs welcome

With over 28 years of experience in residential and commercial electrical services, I am a fully licensed electrician in the State of California, committed to delivering excellence in every project.\n\nMy work is built on precision, safety, and strict compliance with California electrical codes. From panel and subpanel upgrades to three-phase systems, transformers, lighting installations, and advanced troubleshooting, every job is executed with professionalism and attention to detail.\n\nI don’t just complete projects — I deliver safe, efficient, and long-lasting electrical solutions.\n\nProfessional. Reliable. Done right the first time.

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Avatar for Grid Titans, LLC
Grid Titans, LLC
New to Angi
Generator - Install - For BusinessGenerator - Repair - For Business

Serving Saint Helena, CA and surrounding areas

Approved

Warranties offered

Small jobs welcome

Credit card accepted

Grid Titans is a licensed electrical contractor specializing in solar, battery storage, EV chargers, and full energy system installations. We serve residential homeowners, commercial properties, and developers with complete design, engineering, and installation services. Our team includes journeyman electricians experienced in private projects, prevailing wage work, and public works. From permitting and interconnection to final inspection, we manage the entire process and deliver reliable, code compliant systems built to perform long term.

Solar Panel Install
Solar Panel Install
Home Solar Install
Tesla EV Charger
Level 2 EV Charger

+1

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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.

If you’re wondering whether gas generators produce carbon monoxide, know that natural gas generators do not produce carbon monoxide if they are functioning properly, as natural gas burns cleanly. However, if the generator malfunctions and the gas does not burn completely, there is potential for carbon dioxide to be produced. To prevent malfunctions, it's crucial to perform regular maintenance, including running the generator weekly and scheduling professional inspections every 6 to 12 months. Also, be sure to test your carbon monoxide detectors regularly to ensure they function in the rare case of the generator producing carbon monoxide.

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

Natural gas generators are designed to run for extended periods of time, such as power outages during a natural disaster. Since there’s no limit to the supply of natural gas, they don’t need to stop for refills. However, generators do need maintenance, including pauses to check and add oil. Constantly running them will also cause a lot more wear and tear, leading to a shorter lifespan.

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

The Saint Helena, 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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