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Avatar for Casaroja Electric Inc
Casaroja Electric Inc
5.0(
19
)
Fixed Generator - InstallPortable Generator - Install

Serving Vista, CA and surrounding areas

Approved

Emergency services offered

Warranties offered

Offers commercial services

"Sergio did a fantastic job! Very happy with the clean install of my tier 2 charger and he added a plug down below my panel. Would recommend for any sort of EV charging installs! Clear communicator, showed up when he said he would and his services were well-priced!"
Panel upgrade
Panel upgrade
Panel upgrade
Panel upgrade
Panel upgrade

+1

1 neighbors recently requested a quote
Avatar for JP3 Electric
JP3 Electric
5.0(
25
)
Fixed Generator - InstallPortable Generator - Install

Serving Vista, CA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"Installed new attic fan and removed old fan . Added and wired 2 new 20 Amp Circuits. Great job- fair price. I recommend Justin and DJ 100%. Fair - honest - they know what they are doing. Will be using them for all future electric work!"
Panel
Outlet
Panelboard
Panelboard
Kitchen Lighting

+3

10 neighbors recently requested a quote
Keil Electric LLC
5.0(
10
)
Fixed Generator - Install

Serving Vista, CA and surrounding areas

Approved

In business since 2014

Free estimates

Credit card accepted

Keil Electric San Diego is a licensed electrical contractor (California #1109913) serving San Diego County from our Santee shop. Andy Keil and the local team handle residential and commercial work across Chula Vista, El Cajon, La Mesa, Santee, Coronado, and the rest of the county.

7 neighbors recently requested a quote
Recommended by77%of homeowners
Avatar for Electrical Insight, Inc
Electrical Insight, Inc
4.5(
46
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Vista, CA and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers' 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.

Electrical Projects
Electrical Projects
Electrical Projects
Electrical Projects
Electrical Projects

+42

2 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Electrical Insight, Inc.
Electrical Insight, Inc.
4.5(
46
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Vista, CA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"They installed a 50 amp plug in my garage to connect an EV charger. I was afraid that the installation may require a panel upgrade. But he made it work without the upgrade. The price was good and the work was done quickly. Great job. Would hire them again."
Electrical Projects
Electrical Projects
Electrical Projects
Electrical Projects
Electrical Projects

+45

Response time1 day
Response rate92%
3 neighbors recently requested a quote
Avatar for J. Casillas Electric, Inc.
J. Casillas Electric, Inc.
4.2(
908
)
Portable Generator - Install

Serving Vista, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1972

Free estimates

Emergency services offered

"Joe was great to work with i asked for a quote and he gave me exactly that and scheduled the installation of 2 wired smoke alarms the next day,Nariel was the electrician and he did a great job, very pleasant, very nice and his work was very neat. I will be using J Casillas electric again."
 custom home
 track lighting
My work.
 low voltage 4inch
 fans

+57

Response time7 hrs
3 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Kent Electrical Services Inc.
Kent Electrical Services Inc.
4.3(
17
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+2 more

Serving Vista, CA and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Earl was great, it was raining hard for San Diego standards and gave me a call that he would be a little late. Once he was here he took his time to understand what the problem was and help us uncover 3 issues that we were having with one of them being a potential fire hazard. I would definitely recommend his work for anyone needing help with electrical issues. Thank you for your service to our country as well!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+11

Response time1 day
10 neighbors recently requested a quote
Recommended by83%of homeowners
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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.

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.

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.

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.

Setting up utilities on a vacant property usually takes at least a few months, or between 6 weeks to 16 weeks. This process requires working with the local planning and zoning department, hiring a building contractor or engineer to design the utility layout, securing permits, laying the lines, and connecting the utilities.

The Vista, CA homeowners’ guide to generator installs

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