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Alternative Electrical Services
4.3(
3
)
Portable Generator - Install

Serving Maynardville, TN and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Doug is reliable.. when he says he will be there.. he is... when he gives you an estimate it's more then fair and very close to what he thought it would be. He knows his stuff and he is very personable too. You don't get that with many trades people. I would hire him again and would recommend him highly to everyone I know"
Response time2 days
Recommended by100%of homeowners
Harman Industries Inc.
New to Angi
Portable Generator - Repair

Serving Maynardville, TN and surrounding areas

Approved

Harman Industries Inc. – Quality Electrical Work Done Right\n\nHarman Industries Inc. provides reliable residential and light commercial electrical services with a focus on safety, efficiency, and honest pricing. We specialize in troubleshooting, panel upgrades, service work, lighting installation, and new construction or remodel wiring.\n\nFrom small repairs to full electrical upgrades, every job is completed with attention to detail and clear communication—done right the first time.\n\nServices:\n• Troubleshooting & repairs\n• Panel upgrades\n• Temporary power setups\n• Lighting installation\n• Service calls\n• New construction & remodels\n\nDependable service you can trust. Contact today for a free estimate.

Avatar for Hiller Plumbing, Heating, Cooling, & Electrical
Hiller Plumbing, Heating, Cooling, & Electrical
New to Angi
Fixed Generator - InstallFixed Generator - Repair

Serving Maynardville, TN and surrounding areas

Approved (Corporate)

In business since 1990

Free estimates

Credit card accepted

Hiller Plumbing, Heating, Cooling, & Electrical, established in 1990, stands for quality and reliability. With our 'Happy You'll Be or the Service is Free' guarantee, we are dedicated to customer satisfaction in Murfreesboro and the surrounding communities. Our plumbers provide emergency repairs, sewer line service, and expert installation or repair of water heaters. Our HVAC specialists ensure your comfort with preventative maintenance, air conditioning and furnace repairs, for year-round comfort. Our licensed and insured electricians offer prompt emergency response, custom upgrades, and safe, thorough electrical fixes for both residential and commercial properties. Hiller is your trusted provider for all your home service needs.

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+9

8 neighbors recently requested a quote
Avatar for NEC
NEC
5.0(
12
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Maynardville, TN and surrounding areas

In business since 2020

Free estimates

Emergency services offered

"NEC is very knowledgeable in all aspects of electrical work. Whole home generator install was a breeze. NEC is fast, friendly, and affordable. A veteran owned business backed by union training and quality, couldn't have asked for a better company to provide the service we needed."
Recommended by100%of homeowners
Avatar for D.R. Electric
D.R. Electric
5.0(
10
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Maynardville, TN and surrounding areas

"Incredible job by Dustin at D.R. Electric. Very professional and worked on our schedule since we reside out of state. I would recommend this company for any electrical needs you may have."
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Generator Project

+7

Response time1 day
Response rate100%
Recommended by80%of homeowners
Showing 1-10 of 39
Generator Install questions, answered by experts

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

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.

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.

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. 

These advanced generators use a key fob or a smartphone app to remotely start, which is ideal for getting power back on immediately without venturing outside. This feature is more common on whole home generators, but you may be able to find it on large portable generators, too.

The Maynardville, TN homeowners’ guide to generator installs

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