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Avatar for GoGEN
GoGEN
4.8(
46
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Saint Hedwig, TX and surrounding areas

Approved

Super Service Award Winner

In business since 1994

Free estimates

Warranties offered

"They installed a whole house Generac generator in less than 4 hours.. very satisfied with their service. Excellent work ethic, answered all my questions, install has a very clean appearance, they were in and out as they said they would be. Did not leave a mess behind. I strongly recommend using GoGen for electrical and Generator service and install needs."
39 neighbors recently requested a quote
Recommended by47%of homeowners
Avatar for Asurance Electrical Contractors
Asurance Electrical Contractors
5.0(
34
)
Fixed Generator - Install

Serving Saint Hedwig, TX and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

"I recently had a light fixture installed in my office and an electrical outlet relocated to a different area, and I couldn’t be happier with the results. The electrician was professional, punctual, and paid close attention to every detail. The installation was clean, the work was completed efficiently, and everything looks and functions perfectly. It’s clear they take pride in their craftsmanship and customer service. I highly recommend them to anyone looking for quality electrical work. Thank you for doing such an amazing job!"
Gallery
Gallery
Gallery
EV charger install
EV charger install

+22

15 neighbors recently requested a quote
Recommended by76%of homeowners
Blackthorn Electric LLC
4.9(
8
)
Generator - Install - For Business

Serving Saint Hedwig, TX and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Emergency services offered

"Ronnie arrived on time, maintained good communications, and provided a good cost estimate for the EV outlet i needed. They even patched up the drywall in which most Electricians don't do. I would call him again."
AUTOZONE
AUTOZONE
Response time3 hrs
14 neighbors recently requested a quote
Recommended by75%of homeowners
South Texas Source Electrical Contracting
5.0(
5
)
Generator - Install - For Business

Serving Saint Hedwig, TX and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

"South TX Electrical has great customer service. Lazaro was timely and efficient. I was very happy with the quality of work and the attention to detail. He was very thorough and explained everything to include process and materials. I feel confident that the work was done correctly and with the best quality."
1 neighbors recently requested a quote
Avatar for Will Fix It
Will Fix It
1.0(
1
)
Fixed Generator - InstallFixed Generator - Repair

Serving Saint Hedwig, TX and surrounding areas

Approved (Corporate)

In business since 1994

Free estimates

Emergency services offered

Serving the greater San Antonio, TX area since 1994, we are the trusted local source for installation, repair, replacement, or troubleshooting and maintenance of all your plumbing, heating, and cooling needs. You can count on our fast and friendly specialists to provide safe, courteous service nights, weekends - or whenever you call -- 24/7. When our employees visit your home, rest assured that they have passed background and drug tests, and are equipped to provide you with the service you need. We treat you and your property with respect by calling before we arrive at your property, providing an honest, upfront estimate you approve before any work is done, and taking care of your property by using shoe covers and drop cloths as needed. \n

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Generator Install questions, answered by experts

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

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.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

The Saint Hedwig, TX homeowners’ guide to generator installs

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