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’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>

What can I run on different generator sizes?

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

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Q: Do I need a permit to install a home generator?

• <div><p>Yes, in most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home models. Because these installations involve significant alterations to your home's electrical system and produce exhaust fumes, local governments often require a permit or inspection for safety purposes. A generator permit typically costs between $50 and $250, depending on your location. Your electrician or certified installer can usually handle the permitting process for you, but you will be responsible for the cost. It's a good practice to confirm with your installer that they will pull all necessary permits before work begins.</p></div>

Q: What size of diesel generator do you need to run a house?

• <div><p>Sizing a generator is a careful process that requires calculating the <a href="https://www.angi.com/articles/electrical-load-calculation.htm">electrical load</a> 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.</p><p>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. </p></div>

Q: Can a 10,000-watt generator run a central AC unit?

• <div><p>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.</p></div>

Q: What can I run on different generator sizes?

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

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Verified Reviews for Generator Install pros in Amery, WI

*The Angi rating for Generator Install companies in Amery, WI 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 Amery, WI 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 May 18, 2022

Reviewed in May 2022
Our Installer, Adam, was very courteous. He answered all of our questions and allowed us to photograph his progress. He cleaned up the bathroom when done and protected our carpets. I was thoroughly happy with the results,
Mad City Windows & Baths
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Reviewed in February 2022
Chris did an outstanding job at installing subway tile within my kitchen. Professional and respectful, Chris completed the job in a timely manner.
Chris's Handyman and Landscaping LLC
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Reviewed in December 2021
In spite of a huge pile-up on I-94 because of icy roads,, Shaun had to take a long detour and still kept the appointment. And, this was on Christmas Eve! Our generator is working, though we will be needing to update a couple parts. Happy New Year Ced S. 12-28-2021
Farr Services, LLC
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Reviewed in October 2020
Ray Foss Construction was fantastic to work with! Ray installed two large egress windows for us in an existing, poured-wall basement. He was here when he said he would be, it took the amount of time he estimated it would and he worked very neatly. The windows look great and bring so much...
Ray Foss Construction, LLC
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Reviewed in August 2018
Brian did a nice job on two exterior door installs at my parents' house. They look and work great. I appreciate that after the doors were in he could have called it a job done, but he made a extra trip for some caulk to finish the job the right way. He was easy to get a hold of and...
Valley Home and Property Maintenance
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Reviewed in April 2018
Rick took my money and barely ever showed up. 6 months into a whole house remodel he has painted two ceilings and installed a few cabinets. His attitude is unprofessional and he is nearly impossible to work with. It's easier to get my kids to clean their rooms than to get him to do the work he...
Riverside Homes & Construction
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Reviewed in July 2016
Daren was very professional, courteous and informative on how to utilize the underground fence. I know my dogs will stay within their boundaries with no worries. Darin also installed my daughters and my sons dog guard and they are both happy with it.
Wisconsin Dog Guard
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Reviewed in May 2015
<p>It was one of the best investments we've made. Ken Richter assessed the energy usage in our entire home, created a plan for reducing our energy signature and put it all together into one package that qualified for the 30% Federal Tax Credit (that's real cash...not a deduction).</p> <p>Our...
Richter Heating and Cooling
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Reviewed in May 2015
This was a great experience. Tim was very informative. His product quality is outstanding. Everything was custom built by Tim at a cost lower than commercial built units. He really cares about quality and service. I would highly recommend Tim to anyone in central Minnesota or western Wisconsin...
Tim Eich
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Find Generator install pros in Amery

Wisconsin Generators LLC

5.0(

)

Fixed Generator - InstallGenerator - Install - For Business

Serving Amery, WI and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"Very prompt and professional, installation was in a timely manner. Very helpful with any questions and explanations. After job was complete. Highly recommended."

41 neighbors recently requested a quote

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Aquarius Home Services

4.6(

260

)

Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Amery, WI and surrounding areas

Approved

Super Service Award Winner

In business since 1987

Free estimates

Emergency services offered

"Service install technicians were great!"

Response time12 hrs

Response rate100%

5 neighbors recently requested a quote

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A Bernal Electric, LLC

5.0(

)

Fixed Generator - InstallGenerator - Install - For Business

Serving Amery, WI and surrounding areas

In business since 2006

Free estimates

Credit card accepted

"Great people to work with. They have all of the knowledge to do the job right and they communicate very well. Extremely happy that they did all of the electrical on our new home. I recommend them highly."

Response time1 day

Recommended by100%of homeowners

Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Amery, WI and surrounding areas

In business since 2002

Free estimates

Emergency services offered

"First, they were recommended to us for the whole house generator by home depot. We were so happy with the generator that we had him do a bathroom fan at my house and a bathroom fan at my son's house. I did some checking and that was a reasonable price. With the work he did, it was more than reasonable. The job was a little more involved than he thought it would be and he didn't have any problem with any of it. Without anything to judge the pricing from, other than online and a couple of guys I had come over who weren't on the same page as me, I'd say excellent. The quality was top of the line. As soon as he got the generator, he got over here to put it in. As a matter of fact, I am thinking about calling him again for something."

Recommended by50%of homeowners

Fixed Generator - InstallFixed Generator - RepairGenerator - Repair - For Business+1 more

Serving Amery, WI and surrounding areas

In business since 2023

Free estimates

Emergency services offered

"Ryan was super responsive, professional, friendly and reasonably priced! He made excellent recommendations when I was uncertain of which type of product to use. I would recommend him in a heartbeat, and he will be my first call for any future electrical work I need done. Thank you, Ryan!"

Response time2 days

Response rate100%

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Generator Install questions, answered by experts

Yes, in most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home models. Because these installations involve significant alterations to your home's electrical system and produce exhaust fumes, local governments often require a permit or inspection for safety purposes. A generator permit typically costs between $50 and $250, depending on your location. Your electrician or certified installer can usually handle the permitting process for you, but you will be responsible for the cost. It's a good practice to confirm with your installer that they will pull all necessary permits before work begins.

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.

A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the total wattage of the devices that you’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.

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.

Here’s what you can run with different wattages and types of generators:

Portable generator:

2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers.
4,000 watts will keep two large appliances operating and a few smaller devices.
8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.

Partial to whole-house generator:

20,000 watts and above will make it seem like your home’s power is still on.

The Amery, WI homeowners’ guide to generator installs

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