What is the lifespan of a whole-house generator?

<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>

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

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

Last update on August 27, 2025

Reviewed in August 2024
I recently hired JCM General for a home project, and I couldn't be happier with the results. From the initial consultation to the final walkthrough, their team was professional, attentive, and highly skilled. They stayed on schedule and within budget, which was a huge relief. highly...
JCM General Construction
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Reviewed in July 2014
We called first thing in the morning and 2 men were here within a few hours. They checked out breaker box to make sure it was ok. They determined out generator was the cause of the surge and they told us how to prevent it in the future.
Waterman Electric Corp
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Reviewed in June 2014
Came on time, professional, generally happy with services.
All Service Heating & Air
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Reviewed in September 2013
Competent work performed in a timely manner. The owner/general contractor was very proactive and had hands-on involvement. He had a very good suggestion for the venting.
Marcin Homes
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Reviewed in May 2012
We have been using Comcast for about 8 years now. Their prices seem reasonable. The service is generally good.
Comcast
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Reviewed in April 2012
They are great, very approachable. The kids can take their cars and leave them; ask them about low tires or whatever, they are really responsive about answering the kids about the general auto care and maintenance.
Auto Works of Prescott LLC
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Reviewed in November 2011
It is individually owned by a woman from Venezuela. In her home country, she would be considered an artist. She is a lovely woman. She can do anything. She has almost remade clothes for me. She does men's and children's alterations. She also does bridal and simple hems on men's pants. Her...
A & B ALTERATIONS
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Reviewed in August 2011
I liked working with them. They’re very nice people. There were a few items that we’re completed (like the inside of the stove). When they come back, I’ll be specific with the items I want. The first visit was mostly a general cleaning of the house. They’re a very nice husband and wife team. I...
Christian Cleaning
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Reviewed in May 2011
He comes on an as needed basis. He will basically drive by and evaluate the yard. They are very reasonably priced. I protect my small plants and flowers from their weed eater. They are very good at general lawn maintenance.
AB Lawn Care
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Reviewed in March 2009
They 1st installed the line above ground, and I ran over it with my mover. I called them to tell them to install it under ground. They came out and installed the line underground, however now my yard floods. The reason the yard was flooding was because they failed to install the plumber...
Eschberger Plumbing
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Generator install pros in Tyler

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