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Avatar for Gridwise Electric
Gridwise Electric
5.0(
23
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Fairfax, CA and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"Had Gridwise install a transfer switch and inlet box for our portable generator. We lose power a few times a year during wind events and got tired of running extension cords everywhere. Michael handled the install and walked us through exactly how to connect and start the generator when the power goes out. He was patient with all my questions. Permit was pulled and inspection passed first try."
New Home Build Electrical
New Home Build Electrical
New Home Build Electrical
Construction Electrical
Construction Electrical

+17

Avatar for Gridwise Electric
Gridwise Electric
5.0(
15
)
Portable Generator - RepairFixed Generator - InstallFixed Generator - Repair+3 more

Serving Fairfax, CA and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"Just got a hot tub delivered and needed the electrical run to it. Mark and crew came out and installed a 50-amp GFCI breaker and ran conduit along the side of the house to a disconnect near the tub. Looked way cleaner than I expected. Passed inspection and we were soaking that weekend."
Junction box
Main panel
Framing phase
Construction Electrical
Construction Electrical

+3

27 neighbors recently requested a quote
Avatar for Sonoma Coast Electric, Inc
Sonoma Coast Electric, Inc
5.0(
7
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Fairfax, CA and surrounding areas

Approved

In business since 2024

Free estimates

Warranties offered

"I had 2 ceiling fan/lights installed in the bedrooms. Installation included 2 new circular circuit boxes in each bedroom ceiling. In addition, I replaced the kitchen ceiling light with an LED fixture. The 2 workers were very polite and professional and worked quickly and efficiently, in addition to being respectful of my personal belongings."
Multimeter Test
100 amp Sub Panel
100 amp Sub Panel
Installing Unistrut
Stripping Wire

+3

Response time1 day
Response rate100%
9 neighbors recently requested a quote
Avatar for Christopher Robert Ceinar
Christopher Robert Ceinar
5.0(
14
)
Fixed Generator - InstallPortable Generator - Install

Serving Fairfax, CA and surrounding areas

Approved

In business since 2023

Offers commercial services

"We needed to install an EV charger receptacle quite far from the electrical panel. Chris suggested leading individual wires through a conduit instead of simply using Romex, saying that heat characteristics are better. He also wanted to know what EV charger we were getting and asked for documentation. We also discussed other aspects of the work. His genuine interest and attention to detail made us choose him. At the end, we were impressed with the quality of the work he delivered and how easy it was to communicate with him. He charged about the average price for this work but delivered more than many other electricians would do."
2 neighbors recently requested a quote
Warner Electric
5.0(
6
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Fairfax, 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!"
6 neighbors recently requested a quote
Recommended by100%of homeowners
Proper Power Electric
5.0(
5
)
Fixed Generator - Install

Serving Fairfax, CA and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

"Reliable Service and Excellent Customer Care I’ve been really impressed with this electric company from day one. The service is consistent, my power has been reliable, and I’ve noticed real savings on my monthly bills compared to my previous provider. Whenever I’ve had a question, their customer support team has been friendly, responsive, and genuinely helpful — no long hold times or confusing answers. I also appreciate their focus on clean energy and efficiency — it feels good knowing I’m supporting a company that actually cares about the community and the environment. Overall, top-notch experience. Highly recommend to anyone looking for dependable and affordable electric service."
Response time2 days
Response rate100%
2 neighbors recently requested a quote
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Generator Install questions, answered by experts

Here’s what you can run with different wattages and types of generators:

Portable generator:

  • 2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. 

  • 4,000 watts will keep two large appliances operating and a few smaller devices.

  • 8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.

Partial to whole-house generator:

  • 20,000 watts and above will make it seem like your home’s power is still on.

It is safe to run a generator continuously, but you must follow safety protocols to ensure personal and home safety. Read the manufacturer’s instructions for specific recommendations, but the general recommendation is to turn generators off overnight or when you’re away from the house. Overworked generators can pose a fire hazard and if your generator is not in a well-ventilated area, running it continuously could lead to carbon monoxide poisoning.

It’s usually better to repair your generator if it isn’t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around $300 on average, while installing a new whole-house generator costs around $5,000 on average. The only exception is if you know your generator is reaching the end of its useful life, usually between 30 and 40 years. If you have an older generator, you could face multiple repairs in the coming years, which might mean that a full replacement will be more cost-effective over time.

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.

Yes, in some locations, it is required by the National Electric Code (NEC) to have a transfer switch installed for electrical emergencies. In addition to following electrical code, generator transfer switches ensure your home is fully protected during a power outage. By switching the power from the main breaker to the generator breaker, you can seamlessly operate your HVAC, lights, appliances, devices, and more during an emergency. 

The Fairfax, CA homeowners’ guide to generator installs

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