How long does a whole-house generator last?

<div>When maintained properly, a whole-house generator can last up to 20 years. <a href="https://www.angi.com/articles/how-much-does-generator-repair-cost.htm">Costs to maintain and repair generators</a> vary by location and type of generator, but you can expect to pay about $150 to $300 per year for annual generator maintenance checks. An experienced generator service technician will inspect your generator’s engine filter, starting mechanism, fuel, lubrication, and coolant levels to keep your generator in good working condition for as long as possible. </div>

How do I know what size generator I need?

<div>When <a href="https://www.angi.com/articles/what-size-generator-do-i-need.htm">choosing the right size generator</a> for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:<ul><li>Refrigerator: 600 watts</li><li>Large dehumidifier: 700 watts</li><li>Large window air conditioner: 1,400 watts</li><li>Water heater: 3,000 watts</li></ul>Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running. </div>

What can I run on different generator sizes?

<div>Here’s what you can run with different wattages and types of generators:Portable generator:<ul><li>2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. </li><li>4,000 watts will keep two large appliances operating and a few smaller devices.</li><li>8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.</li></ul>Partial to whole-house generator:<ul><li>20,000 watts and above will make it seem like your home’s power is still on.</li></ul></div>

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Q: How much does a whole-house generator cost?

<div><a href="https://www.angi.com/articles/how-much-does-it-cost-install-generator.htm">Installing a whole-house generator costs</a> about $5,000 on average. Prices range from $1,550 to $8,500, depending on size, brand, fuel type, and assembly. The size of your whole-house generator is the most significant cost factor, with large homes with high energy demands costing the most to power. Types of whole-home generators include:<ul><li>Portable generators with 1kW&ndash;7.5kW capacity: $500&ndash;$2,000</li><li>Partial generators with 9kW&ndash;20kW capacity: $2,000&ndash;$6,300</li><li>Whole-house generators with 22kW&ndash;48kW: $5,000&ndash;$18,000</li></ul></div>

Q: What can I run on different generator sizes?

<div>Here&rsquo;s what you can run with different wattages and types of generators:Portable generator:<ul><li>2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. </li><li>4,000 watts will keep two large appliances operating and a few smaller devices.</li><li>8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.</li></ul>Partial to whole-house generator:<ul><li>20,000 watts and above will make it seem like your home&rsquo;s power is still on.</li></ul></div>

There are 3 highly-rated local generator installers.

Verified Reviews for Generator Installation pros in Lebanon Junction, KY

*The Angi rating for Generator Installation companies in Lebanon Junction, KY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Installation needs.

*The HomeAdvisor rating for Generator Installation companies in Lebanon Junction, KY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Installation needs.

Last update on April 25, 2025

Reviewed in January 2015
Corrigan did an excellent job from the original visit to determine what needed to be done and suggesting alternatives to the final installation of the breaker panel. The electricians who came to do the installation were very professional and informative.
CORRIGAN Electric
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Reviewed in December 2016
they did a great job. They were fast and efficient and did everything they said they were going to do.
Varitech Inc
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Reviewed in November 2015
The crew was on time and very professional. Took their time to do work correctly. Worked directly with Duke Energy, Clark County building inspector and piping contractor. Generator maintenance professional came out to give a personal tutorial on how the generator works and what to expect when...
Morris Electric Co
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Reviewed in September 2012
Everything has been fine. They arrive on time and are customer friendly. I am pleased with the service.
Elite Heating Air Conditioning Inc
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Reviewed in February 2012
Excellent. Very professional company. Would recommend to others as well as Mr. West the technician who performed the service.
Jarboe's Plumbing, Heating & Cooling
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Reviewed in January 2016
They showed up on time, were very courteous, completed the job as planned and charged very reasonably.
Pages Gas Line Service Inc
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