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Top-Rated Generator install pros in Diana - Updated Nov 2026

Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
4.4(
5
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business

Serving Diana, TX and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

We are the experts in the field of Whole Home Generator Sales and Installation, with over 20 years of experience in the game. We provide turn-key installation by licensed professionals - 24 hour emergency service - Remote Monitoring - Long term maintenance and service by factory trained technicians.

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+2

136 neighbors recently requested a quote
Avatar for Lonely Mountain Electric
Lonely Mountain Electric
5.0(
8
)
Portable Generator - Install

Serving Diana, TX and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"40 X 32ft shop. 27 conduit drops to include two 220 drops for Welder and Mini Split Technicians were very courteous, knowledgeable and professional. They answered all my questions thoroughly. After the install, they briefed on the electrical panel. Organized to perfection. I would not hesitate to hire this business again. Highly recommended. Thanks again to Mike and Chadwick, you made the experience positive. Brandon"
17 neighbors recently requested a quote
Lonely Mountain Electric
5.0(
3
)
Portable Generator - Install

Serving Diana, TX and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

Lonely Mountain Electric is committed to excellence in every aspect of our \nbusiness. We uphold a standard of integrity bound by fairness, honesty, \nand personal responsibility. Our distinction is the quality of service \nwe bring to our customers. Accurate knowledge of \nour trade combined with ability is what makes us true professionals. \nAbove all, we are watchful of our customers' interests and make their \nconcerns the basis of our business.

Hill Electric Co., LLC
3.5(
1
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Repair - For Business

Serving Diana, TX and surrounding areas

Approved

In business since 1973

Free estimates

Credit card accepted

"I would still like to hire CP, Hill, Davis or Circle S. but I don't know what to do from here. I would give them a better score If I could see their work on my home. I only marked ( would not hire them ) because there is no in-between. I have been trying to get some one to install a Transfer Switch for my new generator, I called ( Hill ) with no response then Home Advisor gave them my number and still no response. I called ( CP Electric ) with no response then Home Advisor suggested them And gave me their number. So what's the point of me calling them again. I first hire another Electrician (Circle S) he came out and gave me a bid but never showed up to do the job. I then called him three times and he never called back. I then called a fourth electrician (Davis Electric) 2 times and he never called back. This might be considered a small job but I think they should at least call you back and tell you that they can't do it for what ever reason. That's called doing good business. No disrespect to any of these businesses I'm just getting pretty frustrated trying to get something done. This is the same thing that happened when I tried to hire a roofer with Home Advisor , I still have a bad roof jack that is probably leaking water into my rafters causing damage. I have cash money and no one wants it. Is this Texas wide or just a Gilmer Problem. Never had these issue where I used to live. Home Advisor does not work at least not here."
Response time2 days
Avatar for Electrical & Lift Services of East Texas - Home  Facebook
Electrical & Lift Services of East Texas - Home Facebook
4.8(
11
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Diana, TX and surrounding areas

In business since 1989

Free estimates

Emergency services offered

"The owner, Dave Fisher, recently installed a Home Guardian Backup Generator for my home. He did a great job of helping design a system that meets my needs. The installation works perfectly and looks great. Electrical and Lift Services did an A+ job of resolving all issues associated with the install. I highly recommend this dealer for a professional generator install."
15,000-Watt Solar Array
22,000-Watt Stand-By Generator
36,000-Watt Generator
Typical Installation
Response time1 day
Recommended by100%of homeowners
Avatar for DLT Contracting, LLC
DLT Contracting, LLC
4.5(
14
)
Portable Generator - Install

Serving Diana, TX and surrounding areas

In business since 2014

Free estimates

Credit card accepted

"They remodeled our bathroom. Reconfigured the shower stall and put in tile. They put in vinyl plank flooring and a new commode. They installed gutters on the house and installed a new front door. They have a great work ethic. Easy to get along with when we changed our minds a time or two and then added some things we thought of later. They responded quickly to any issues we were concerned about. We highly recommend DLT Contracting and will be contacting them again for any future projects."
Fresh new look for apartment over garage
Attached deck BEFORE rebuild
Attached Deck AFTER Rebuild
Kitchen Remodel
Refinished Pergola - Underneath View

+5

Response time5 hrs
Recommended by90%of homeowners
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Generator Install FAQs, answered by experts

A portable generator can supply power to selected appliances and circuits in a home, but it's generally not designed to handle the entire household's electrical needs simultaneously. Portable generators have limited wattage capacity, so they are only designed to power essential devices and electronics temporarily until local power is restored. If your power needs outweigh the capabilities of a portable generator, consider installing a whole-home generator instead.

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.

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.

The amount of time a standby generator can run continuously is around 3,000 hours on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.

The average cost to install a home generator is $5,200, but total costs can range from $500 to $18,000 or more. The final price depends on several factors, including the generator's size, type, brand, fuel source, and the cost of labor and assembly. The generator's size is the most significant cost factor, as units that can power larger homes with higher energy demands cost more.

Cost breakdowns by generator type are typically as follows:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500–$2,000

  • Partial-Home Generators (9kW–20kW): $2,000–$6,500

  • Whole-House Generators (22kW–48kW): $5,000–$18,000

To ensure you get the right size unit for your needs without overpaying, consider hiring an electrician to calculate the electrical load of your essential appliances. It is also recommended to get at least three quotes from qualified installers to find the best fit for your budget.

The Diana, TX homeowners’ guide to generator installs

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