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Avatar for Square Weber, LLC
Square Weber, LLC
4.5(
52
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Somerville, TN and surrounding areas

Approved

In business since 1987

Emergency services offered

Credit card accepted

"The electricians installed a ceiling fan for us and were great! They arrived on time, were very polite, and got the job done correctly. We are very pleased with them and will most likely hire them again when we decide to put in our other fans."
Response time8 hrs
3 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Wolfe Brothers Electric LLC
Wolfe Brothers Electric LLC
4.7(
12
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Somerville, TN and surrounding areas

Approved

Emergency services offered

Warranties offered

Credit card accepted

"I have never had any problems with any of their work. They do the best job and work until it is finished. One time they were working on the generator they were here until about 10 at night to get it done. They come when you call! I have been using them for the last 20 years and I've never had one complaint! They deserve an A+"
Generator
Response time8 hrs
14 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Mr. Electric of Tipton County
Mr. Electric of Tipton County
5.0(
6
)
Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair+4 more

Serving Somerville, TN and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

Mr. Electric® of Tipton County is a leader in electrical services and a trusted provider for installations, lighting, and electrical repair for homes and businesses. Our team of licensed electricians provides expert service with the professionalism and integrity you’d expect from a major brand. Since 1994, Mr. Electric’s locally-owned and operated locations have earned the trust of the communities they live in and serve throughout the US and Canada. We believe in up-front, fair pricing, and quality workmanship. Backed by our Neighborly Done Right Promise™ - if it's not done right, we promise to make it right. Guaranteed. Contact us today to see how we can help any of your electrical needs.

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+3

4 neighbors recently requested a quote
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Generator Install questions, answered by experts

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.

It is safe to run a generator continuously, but you must follow safety protocols to ensure personal and home safety. Read the manufacturer’s instructions for specific recommendations, but the general recommendation is to turn generators off overnight or when you’re away from the house. Overworked generators can pose a fire hazard and if your generator is not in a well-ventilated area, running it continuously could lead to carbon monoxide poisoning.

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

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.

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

The Somerville, TN homeowners’ guide to generator installs

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