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Proper Power Electric
5.0(
5
)
Fixed Generator - Install

Serving San Bruno, CA and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Response time2 days
Response rate100%
Home Pro Remodeling & Construction, Inc.
4.1(
31
)
Portable Generator - Repair

Serving San Bruno, 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
Avatar for 415 Electric
415 Electric
5.0(
1
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving San Bruno, CA and surrounding areas

Approved

In business since 2018

Small jobs welcome

Offers commercial services

Welcome to 415 Electric Incorporated! We always provide high quality work that produces an exceptional product. We pride ourselves on the relationships we build with all of our clients, and we cannot wait to hear from you. Call today!

Response time1 day
Recommended by100%of homeowners
Avatar for Vilroy
Vilroy
New to Angi
Portable Generator - Repair

Serving San Bruno, 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.

Avatar for Thunder electric
Thunder electric
New to Angi
Portable Generator - Repair

Serving San Bruno, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

A warm greeting to all. My name is Carlos, and I'm an electrician with over six years of experience doing residential and commercial work. Over the years, I've gained a lot of experience, and I'm currently studying to obtain my electrical contractor's license. I would be happy to work for you.

Full home wiring
Fayth Lyon
New to Angi
Portable Generator - Repair

Serving San Bruno, CA and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

Need a breaker fixed? Outlet replaced? Room freshened up with clean paint lines?\n\nI’m a licensed journeyman electrician with 6+ years experience offering small electrical jobs and interior painting at fair prices.\n\n✔️ Clean work\n✔️ Respectful in your home\n✔️ No mess left behind\n✔️ Straightforward pricing\n✔️ Show up when I say I will\n\nPerfect for:\n• Troubleshooting tripping breakers\n• Outlet / switch replacement\n• Light fixture installs\n• Ceiling fan swaps\n• Small room repainting\n• Patch & paint touch-ups\n\nStarting Rates:\nElectrical troubleshooting – $99\nOutlet / switch replacement – $45 each\nInterior room painting – starting at $250\n\nServing Sacramento & surrounding areas.\n\nIf you want honest work without big-company pricing or runaround, message me.

Grass Valley
Grass Valley
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Generator Install questions, answered by experts

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

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.

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

Generators run on a variety of fuel types, ranging from natural gas to solar power. Keep in mind that fuel costs varying by type:

  • Natural gas: $2,000–$21,000 per year 

  • Liquid propane: $2,000–$21,000 per year

  • Diesel: $3,000–$20,000 per year

  • Gasoline: $500–$3,000 per year

  • Solar generator: $2,000–$25,000 per unit

  • Battery backup: $10,000–$25,000 per unit

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

The San Bruno, CA homeowners’ guide to generator installs

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