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Verified Reviews for Generator Install pros in Colma, CA

*The Angi rating for Generator Install companies in Colma, 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 Colma, 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 December 05, 2025

Find Generator install pros in Colma

Avatar for Dalcon Electric
Dalcon Electric
4.5(
431
)
Fixed Generator - InstallPortable Generator - InstallGenerator - Install+1 more

Serving Colma, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1993

Emergency services offered

Warranties offered

"Resolve immediate problem and generated estimates for the overall plan to address new security compliance requirements"
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+9

Response time9 hrs
Response rate98%
14 neighbors recently requested a quote
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Avatar for MC Electric
MC Electric
4.1(
282
)
Fixed Generator - Install

Serving Colma, CA and surrounding areas

Approved

In business since 1989

Customers say: Quality work

"Super fast response, very professional, and knowledgeable. Got the work done in less than 12 hours after submitting the request including installation of a new part! Bravo!"
Response time10 hrs
29 neighbors recently requested a quote
Recommended by85%of homeowners
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Home Pro Remodeling & Construction, Inc.
4.1(
31
)
Portable Generator - Repair

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

Serving Colma, CA and surrounding areas

Approved

In business since 2018

Small jobs welcome

Offers commercial services

"My electrician forever! They are reliable and did the service faster and better than I expected. They exceeded my expectations!"
Response time1 day
Recommended by100%of homeowners
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Avatar for Vilroy
Vilroy
New to Angi
Portable Generator - Repair

Serving Colma, 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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Generator Install questions, answered by experts

With proper maintenance, a whole-house generator can last between 20 and 40 years. The specific lifespan depends on how often and for how long the generator is used, and some models may have their life expectancy rated in hours of operation. To maximize its lifespan, expect to spend around $150 to $300 per year for annual maintenance checks from a qualified technician. During these checks, a technician will inspect the engine filter, starting mechanism, fuel, lubrication, and coolant levels. Consulting your installer and choosing a low-impact fuel like natural gas or diesel can also help ensure your generator lasts as long as possible.

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.

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. 

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.

While natural gas generators are costly, they’re a great option for standby power due to the reliability of natural gas as a fuel source. Unlike other fuels, natural gas is delivered through underground pipes, making outages extremely rare and less likely to be affected by the elements. As long as the area isn’t prone to earthquakes, they offer an unlimited supply of natural gas that doesn’t degrade over time or require storage in tanks.

The Colma, 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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