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Verified Reviews for Generator Install pros in Decatur, TX

*The Angi rating for Generator Install companies in Decatur, TX 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 Decatur, TX 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 October 07, 2026

Find Generator install pros in Decatur

Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
3.9(
7
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business

Serving Decatur, 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.

Additional Photos
107 neighbors recently requested a quote
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Avatar for R&D Electrical, LLC
R&D Electrical, LLC
4.5(
2
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Decatur, TX and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

"We had a less than ideal work environment but the electrician took care of our concern in a minimum amount of time, and was courteous and professional in spite of a misunderstanding over the time we thought he would arrive."
Base of the tower
Service with Generator
Lighting for water fountain
Pendant lighting
Walkway lighting

+2

Response time1 day
Response rate96%
Recommended by100%of homeowners
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Avatar for Big Beards Electric
Big Beards Electric
New to Angi
Portable Generator - Repair

Serving Decatur, TX and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

My Partner and I have over 20 years experience a piece in residential and commercial electrical work. We enjoy what we do and set a very high standard for ourselves and the quality of work we provide.

Custom track lighting
Custom track lighting
Custom track lighting
Custom track lighting
Custom track lighting

+27

4 neighbors recently requested a quote
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Zapata’s Electrical
New to Angi
Fixed Generator - InstallPortable Generator - Install

Serving Decatur, TX and surrounding areas

Approved

Emergency services offered

Warranties offered

Small jobs welcome

Hello guys, I’m starting my own electrical service company. Been in the electrical industry since August of 2018 and now I’m licensed and insured running my own show. I’m familiar with rough in, troubleshooting, raceway installation, and many more. You have a problem, I have the solution.

Main Disconnect Upgrade
Main Disconnect Upgrade
Main Disconnect Upgrade
Main Disconnect Upgrade
1 neighbors recently requested a quote
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Avatar for A Number 1 Air - Electrical
A Number 1 Air - Electrical
New to Angi
Fixed Generator - Install

Serving Decatur, TX and surrounding areas

Approved

In business since 1990

Free estimates

Credit card accepted

At A#1 Air, we believe that everyone should have a comfortable, safe place to call home. That's why we offer comprehensive HVAC, plumbing, electrical, and air quality services throughout the Dallas-Fort Worth Metroplex for both residential and commercial properties, and stand firmly behind our promise of Guaranteed Right, Day or Night!\n

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GatewayNetworking
New to Angi
Portable Generator - InstallPortable Generator - Repair

Serving Decatur, 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

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Avatar for HomeWorx Renovations
HomeWorx Renovations
New to Angi
Portable Generator - InstallPortable Generator - Repair

Serving Decatur, TX and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

I’m a general contractor with hands-on experience in residential renovations, repairs, and property improvements. Through my business, HomeWorx Renovations, I’ve managed projects from planning and estimating to completion, with a strong focus on quality workmanship, clear communication, and customer satisfaction. I take pride in solving problems, staying organized, and delivering projects on time while building lasting relationships with clients.

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Generator Install questions, answered by experts

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. 

While diesel is relatively stable, it won’t last nearly as long as propane and you may have to replace it if it sits unused for too long. Diesel can sometimes struggle to work efficiently or start engines during especially cold weather, so it’s not the best choice for every climate. Compared to fuels like propane and natural gas, diesel generators tend to be noisier and create more exhaust, which isn’t always ideal for home use.

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.

To reduce AC startup power for a whole-house generator, install a soft start kit or hard start capacitor, which lowers the initial surge by gradually ramping up the compressor. Using a smart load manager can also help by staggering startup loads, preventing a system overload and future costly repairs.

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.

The Decatur, TX 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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