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Avatar for Mr. Electric of Gastonia
Mr. Electric of Gastonia
4.8(
62
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+2 more

Serving Dallas, NC and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"I want to take a minute and note that Carleton B. is incredible. Truly one of if not the best interactions I have had with a technician in any field and he is the sole reason we purchased a one year plan today. We are very pleased with his quality of work, communication, and timeliness. He has provided a great experience for us and for that we are very thankful."
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+89

3 neighbors recently requested a quote
Recommended by83%of homeowners
J. N. Greene Electrical Contracting Inc.
5.0(
9
)
Generator - Install - For Business

Serving Dallas, NC and surrounding areas

Approved

In business since 1995

Free estimates

Credit card accepted

"If you need electrical work done, please call J. N. Green Electrical. We started off by calling several companies out to our house to fix what we thought was a minor electrical problem. After three different electricians came out and three different bills, with nothing fixed, we found J.N. Green Electrical on Angie List. We were skeptical at first but said, Let give it a try. Green Electrical was out at our house that same day and was able to fix the problem in no time. They were very professional and charged me less than the other three companies that did not fix the problem. I would definitely recommend them to anyone! They have been our go-to guys ever since!"
Response time6 hrs
Recommended by100%of homeowners
Avatar for WyattWorks
WyattWorks
4.5(
60
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Dallas, NC and surrounding areas

Approved (Corporate)

In business since 1979

Emergency services offered

Warranties offered

"Having owned four different houses the past 16 years, this was hands down the best experience with a plumber... ever. We hired WyattWorks to install a laundry sink (the stainless over cabinet kind) which required drilling through the floor to tie-in with supply and drain pipes in our basement. Jeremy performed the work flawlessly and was a true pro: measure and recheck, plan and dry fit, and clean up the work area during and after. The whole process from start to finish was painless!"
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+1

Response time12 hrs
9 neighbors recently requested a quote
Recommended by90%of homeowners
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Generator Install questions, answered by experts

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.

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.

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.

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. 

The Dallas, NC homeowners’ guide to generator installs

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