Get matched with top generator install pros in Twin Peaks, CA

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

• <div><p>The <a href="https://www.angi.com/articles/how-much-does-it-cost-install-generator.htm">cost to install a whole-house generator</a> averages at <b>$5,200</b>, but costs can range from <b>$1,500 to $8,900,</b> depending on the type and size of the generator, and the labor required to install it. To find the best deal while still ensuring the unit meets all the needs of your household, hire an electrician to calculate the electrical load of your must-have appliances and electronics beforehand so you don&rsquo;t pay for more power than you need. As always, be sure to get at least three quotes to find the ideal fit for your needs and budget.</p></div>

Q: How much energy can I expect a home wind turbine to generate?

• <div><p>Energy output depends on turbine size, average wind speed at your site, and system efficiency. A 5 kW turbine in a good wind location can generate 8,000 to 12,000 kilowatt-hours per year, which may cover a large portion of an average home&rsquo;s needs. Accurate output estimates require a professional wind assessment and a review of your household&rsquo;s energy usage patterns.</p></div>

Q: Can I plug a generator directly into my house?

• <div><p>No, you shouldn&rsquo;t use an extension cord to plug a generator directly into your home without using a transfer switch. That&rsquo;s because systems like pumps and HVAC fans need a steady power source that might not be available directly from your generator alone. If you bypass the circuit breaker box, you risk damaging your electrical system, creating a risk of <a href="https://www.angi.com/articles/how-to-put-out-electrical-fire.htm">electrical fire</a> or electrical shock to you or any workers repairing lines on your local electrical grid.</p></div>

Q: How do I know what size generator I need?

• <div><p>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&rsquo;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:</p><ul><li><p>Refrigerator: 600 watts</p></li><li><p>Large dehumidifier: 700 watts</p></li><li><p>Large window air conditioner: 1,400 watts</p></li><li><p>Water heater: 3,000 watts</p></li></ul><p>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. </p></div>

Q: What size generator do I need for a 1500-square-foot house?

• <div><p>A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the <a href="https://www.angi.com/articles/how-many-watts-house.htm">total wattage</a> of the devices that you&rsquo;d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.</p></div>

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Verified Reviews for Generator Install pros in Twin Peaks, CA

*The Angi rating for Generator Install companies in Twin Peaks, CA 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 Twin Peaks, CA 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 October 24, 2025

Reviewed in December 2024
David and the team at American Home Improvement Inc did a great job on my bathroom remodel. I am very happy with the result, and I would recommend them to anyone looking for a general contractor.
American Home Improvement, Inc.
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Reviewed in June 2024
Our experience with Sagi and the team at Home Upgrade Specialist for a Tesla Solar Roof installation was nothing short of exceptional. Sagi's in-depth knowledge about the product and its benefits was incredibly helpful in making our decision. The installation team, Inosente and Eric, carried...
Home Upgrade Specialist, Inc.
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Reviewed in June 2023
Mr Builder General Construction did a fantastic job on my home renovation project. Their team was professional and efficient, and the final result exceeded my expectations.
Mr. Builder General Construction, Inc.
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Reviewed in June 2015
Please get a general quote first when you make your appointment. ("About how much would it cost to ...") I experienced severe sticker shock after an hour with the design consultant, Ioana, choosing patterns and measuring. Once she wrote it out, it was over $1700. She did give me a -300...
3 Day Blinds Palm Desert
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Reviewed in July 2012
I had a great experience with Bill. He was hired by the general contractor that is overseeing repairs in my home. The contractor contacted Bill on Thursday afternoon and he was at my home mid-morning on Friday. He was professional but very personable. He gave the work his full attention and...
Bill Mullen Electric
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Reviewed in October 2011
I hired ADI Electrical, through their Angie’s List Big Deal offer, to install a new bathroom ceiling fan. ADI was on time, professional, did not charge extra to install the fan though it did not fit my existing venting, so modifications were needed, and the fan they provided as part of the Big...
ADI Electrical
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