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Avatar for Powertex Electric
Powertex Electric
5.0(
10
)
Fixed Generator - InstallPortable Generator - Install

Serving Millsap, TX and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Casey from Powertex did a great job. He installed recess lighting, a ceiling fan and dimmers. He also fixed a electrical switch. He took great care to protect my space while he worked. I will use Powertex for all my electrical needs."
Panel Before
Panel During Re-wire
Panel Rewire & Cleanup
Tesla Wall Charger
Free Estimates

+8

5 neighbors recently requested a quote
Avatar for Armored Power Systems LLC
Armored Power Systems LLC
5.0(
9
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Millsap, TX and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Armored Power Systems is the backup power company for homeowners and businesses west of DFW. We design, install, service, and maintain backup power systems to ensure that your property stays energized through the storm.\n\nOur services include standby generator installation, solar energy systems, battery storage, automatic transfer switches, surge protection, load management, electrical upgrades, and generator maintenance, diagnostics, and repair.\n\nAs a licensed Texas electrical contractor and authorized Generac dealer, we provide professional installation, electrical integration, system startup, testing, and ongoing support. We focus on clean workmanship, clear communication, and properly designed systems that are ready when the grid goes down.\n\nBased in Santo, Texas, we serve Parker, Palo Pinto, Erath, Eastland, and Tarrant counties. Contact us to schedule a backup power consultation, service appointment, or installation estimate.\n\n- The Backup Power Company\n

My jobs
My jobs
My jobs
My jobs
My jobs

+13

16 neighbors recently requested a quote
Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
5.0(
5
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business

Serving Millsap, TX and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

Tri-State Water, Power & Air has been provided products designed to improve the comfort and quality of life of our customers since 1992. Our specialty is Automatic Home Standby Generators. \nWe expect customer service excellence and aim to go above and beyond on every call. With 10 locations across 8 states, Tri-State is always ready to serve you.

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111 neighbors recently requested a quote
Avatar for Wilder Electric, LLC
Wilder Electric, LLC
4.7(
78
)
Portable Generator - Install

Serving Millsap, TX and surrounding areas

Approved

In business since 2018

Emergency services offered

Warranties offered

"The security lights were replaced and covers installed for the outside electrical outlets . Also a pull chain light was replaced with a motion detected LED light in a closet. Garage lights were replaced with LED lights. Christopher and his associate have spent a lot of time coming back to adjust an outside security light. They are such professional electricians and will stand behind their work. . I recommend their services."
Soda Shop
patio plug
She plug
The Brian house
Front

+34

Response time6 hrs
Recommended by98%of homeowners
Trip Electric, LLC
New to Angi
Generator - Install - For Business

Serving Millsap, TX and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

TRIP ELECTRIC LLC is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

Response time2 hrs
Response rate91%
GatewayNetworking
New to Angi
Portable Generator - InstallPortable Generator - Repair

Serving Millsap, TX and surrounding areas

Approved

Hello, my name is Saul Gomez. I will be taking care of all your questions, concerns and needs around your home. I cater to the homeowner by any means until the job is satisfactory. Calm cool and collective is how we operate. Also communication and punctuality throughout the whole process to fit our time schedules is a priority. Please consider and have a blessed day

Avatar for Quantum Unlimited, LLC
Quantum Unlimited, LLC
4.5(
125
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Millsap, TX and surrounding areas

In business since 2000

Free estimates

Offers commercial services

"These guys are awesome to work with. Honesty and integrity go a long way with me. I was told there would be a minimum amount of money due for the initial visit. the problems I was having with my generator stumped the technician. He tinkered with it and actually got the thing kinda working. Because it was not 100% fixed, Generator Authority left me a voice message saying they would not charge me. How's that for professionalism?"
Response time1 day
Response rate94%
Recommended by95%of homeowners
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Generator Install questions, answered by experts

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.

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.

In many cases, yes. There are models called dual-fuel generators and fuel switches, but only between certain types of fuel. For example, with the right setup you can convert a generator from natural gas to propane. Some allow switching between diesel and gasoline. There are even tri-fuel generators available in some cases, which adds a large layer of security if you are worried about fuel availability in times of crisis. Always check your generator capabilities and manual instructions before trying to switch fuels. Some generators can use another fuel but may need a fuel conversion kit to prep them first.

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. 

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.

The Millsap, TX homeowners’ guide to generator installs

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