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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

135 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"
29 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
Showing 1-10 of 36
Generator Install questions, answered by experts

A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the total wattage of the devices that you’d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.

In most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home generators. A permit for a generator usually costs between $50 and $250, depending on where you live. Your electrician or certified generator installer will usually pull the permit for you—and might be required to do so by your building department—but you’ll be on the hook for the cost of the permit. You should ask your installer before agreeing to any work if they will pull the necessary permits for your project.

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.

Yes, in some locations, it is required by the National Electric Code (NEC) to have a transfer switch installed for electrical emergencies. In addition to following electrical code, generator transfer switches ensure your home is fully protected during a power outage. By switching the power from the main breaker to the generator breaker, you can seamlessly operate your HVAC, lights, appliances, devices, and more during an emergency. 

Natural gas and electricity rates vary significantly based on location, and pricing can change over time, too. It’s possible that in locations where natural gas is particularly inexpensive, it will cost less than grid-based electricity will. However, you should also factor in the generator’s initial costs and maintenance needs, as well as its noise level and if it can comfortably power all your home appliances.

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.