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Avatar for LT Generators
LT Generators
4.3(
82
)

Serving Altadena, CA and surrounding areas

Approved

In business since 1995

Free estimates

Warranties offered

"I recently had a whole-house generator installed by Nick and his crew. I must say it was a pleasure dealing with this company, from the office staff to the installers. Everyone was so accommodating and mindful of my concerns and requests. The parts and tools they brought took up half of my back yard but at completion of the job, which took a full day, everything was removed and all my planters and other things were put back as before. A very seamless operation indeed. I would not hesitate to recommend LT generators."
22kw Generac Natural Gas Generator
27kw Generac Natural Gas Generator
Kohler Liquid Cooled
27kw Generac Natural Gas Generator
Kohler Air Cooled 20kW

+12

Response time2 days
26 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Gary & Son Electric
Gary & Son Electric
5.0(
41
)

Serving Altadena, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1988

Free estimates

Emergency services offered

"A true professional. Went above and beyond to help explain to me all of my options when hooking up a generator to my home. Work was done quickly and I was very impressed."
2016_La Canada Flintridge
Finished Install
2016_La Canada Flintridge
Open Panel View
Service Entrance Riser

+34

Response time9 hrs
Response rate100%
6 neighbors recently requested a quote
FRANCIS
4.9(
116
)

Serving Altadena, CA and surrounding areas

Approved

In business since 2012

Free estimates

Customers say: Quick response

"Francis responded to my Angi request immediately. He kept in touch to let me know his schedule and when he was in route. He was able to quickly assess and take care of my electrical issues which involved exterior outlets and switches. I would call on him again for any electrical needs."
Response time3 hrs
Response rate92%
3 neighbors recently requested a quote
JSA Electrical Services, Inc.
4.8(
30
)

Serving Altadena, CA and surrounding areas

Approved

In business since 1983

Free estimates

Emergency services offered

"John was always on time, did a great job removing all of my nob and tube and replacing, in entire house including basement and attic, to make my house safe. Found other newly installed electric that was done incorrectly and fixed it. The job as done right and at a fair price. I would highly recommend him and his company to anyone."
OUR WORK
OUR WORK
OUR WORK
OUR WORK
OUR WORK

+20

Recommended by100%of homeowners
Avatar for ADI Electrical Services, Inc.
ADI Electrical Services, Inc.
4.4(
5,641
)

Serving Altadena, CA and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"We hired ADI Electrical on 2/5/24 to do 5 different electrical jobs on our home, replace a fixture under the cabinet in the kitchen, supply and install floor outlet in the family room, supply and install new outlet for the garage ceiling, remove outlet in an old furnace closet, install new doorbell by move existing doorbell transformer to attic and fish ethernet cable from attic to junction box on side of house. Alvaro gave us a detailed estimate on 1/26 and we like their website which is very thorough and precise in its presentation. Michael the administrator in the office was very helpful in setting up appointments and anything else that was needed. Santo, Alex and Sam Adi came out on 2/6 to do the electrical work and we are extremely pleased with their attentiveness to detail and accomplishing everything that needed to be done. All the areas were cleaned up and everything was left spotless. We are very satisfied with the electrical services, and we highly recommend them."
Tesla Wall Connector / Car Charger
Tesla Wall Connector / Car Charger
Landscape  Lights
Recess Lights and Chandelier  Installation
Recess Lights  Installation

+13

Response time8 hrs
56 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for ZERO ELECTRIC
ZERO ELECTRIC
4.9(
10
)

Serving Altadena, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Credit card accepted

"Zero Electric really came through for me. James is professional, knowledgeable, and competent as is the rest of his crew. I trust and would definitely use Zero Electric again in the future."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

1 neighbors recently requested a quote
Recommended by70%of homeowners
Avatar for Accurate Electric, Plumbing, Heating and Air
Accurate Electric, Plumbing, Heating and Air
4.5(
14
)

Serving Altadena, CA and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Accurate Electrical Services contacted us right away and scheduled our appointment quickly. The electrician showed up on time, was clean, knowledgeable and efficiend. We are keeping their number should we need any electrical work in the future."
Jeff Seale - Owner
Albert Aragon - Dispatch
Cheri Fortner - Operations Manager
Dan Hartman - Journeyman Plumber
Eric Bribiesca - Comfort Advisor

+23

18 neighbors recently requested a quote
Recommended by81%of homeowners
Avatar for Jspark Electric Inc
Jspark Electric Inc
5.0(
3
)

Serving Altadena, 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

2 neighbors recently requested a quote
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Generator Install questions, answered by experts

You can determine what size generator you need for a transfer switch by matching the switch to the largest outlet on your generator. Larger generators can power up to 10 circuits, while most 5,000-watt generators can provide power to six circuits. So, if your generator’s largest outlet is 30 amps, you’ll need a 30-amp transfer switch.

Potential benefits of using a natural gas generator include reducing your carbon footprint, lower likelihood of carbon monoxide exposure, budget-friendly operating costs, and low-maintenance, continuous fuel supply. Some possible drawbacks, though, include higher initial installation costs, dependency on a natural gas supply, and installation complexity. Keep in mind that pros and cons will vary based on the type and brand of natural gas generator. 

A home that is 2,500 square feet will likely need a 20kW to 25kW generator. Consult your local generator installer to confirm the generator size needed to power your home before purchasing a new one. Be sure to consider how much power your necessary devices need to run.

A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the total wattage of the devices that you’d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.

You may need a permit for a portable generator if you’ll be installing a transfer switch for your primary residence or similar work. Otherwise, a permit for other uses may not be necessary. Check your local building codes or ask a local generator installer for more information about your local regulations.

The Altadena, CA homeowners’ guide to generator installs

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