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Verified Reviews for Generator Install pros in Oshkosh, WI

*The Angi rating for Generator Install companies in Oshkosh, 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 Oshkosh, 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 June 17, 2026

Find Generator install pros in Oshkosh

Avatar for Wisconsin Generators LLC
Wisconsin Generators LLC
5.0(
9
)

Serving Oshkosh, WI and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"I cannot say enough great things about Jamie and the team at Wisconsin Generators LLC. From the very first conversation, Jamie was professional, knowledgeable, and incredibly responsive. He took the time to walk me through all my options, answered every question thoroughly, and made sure I felt confident in the decision we were making. The installation process was seamless. The crew showed up on time, worked efficiently, and treated our property with respect. Their attention to detail and commitment to doing the job right was obvious from start to finish. Everything was clean, organized, and completed exactly as promised. What really sets Jamie apart is his integrity and customer-first approach. There was no pressure just honest recommendations and clear communication. If you’re considering a standby generator, I highly recommend Jamie and Wisconsin Generators LLC. Reliable service, expert installation, and true peace of mind. Five stars all The way!!"
Whole house back up
Installation Trailer
New propane generator
Partial home backup
Partial home backup

+1

36 neighbors recently requested a quote
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Pinpoint Electric LLC
5.0(
1
)

Serving Oshkosh, WI and surrounding areas

Approved

"Matthew did a fantastic job installing our new quad-receptacle GFCI outlet in our basement. We will absolutely hire him again in the future!! He was polite, punctual, communicated well with us, and his pricing was very reasonable. He cleaned up after his work, which we appreciated. He's definitely a professional electrician that I would refer to my family and friends."
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Avatar for Emerald Electric, LLC
Emerald Electric, LLC
New to Angi

Serving Oshkosh, WI and surrounding areas

Approved

In business since 2022

Free estimates

Offers commercial services

Emerald Electric is proud to serve Wisconsin's electrical needs! Owner and operator Sawyer Effertz has over 12 years of experience in the industry. They're excited to take on new clients immediately. Call today for a free estimate on your next project!

Response time9 hrs
Response rate94%
3 neighbors recently requested a quote
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River White Remodeling
New to Angi

Serving Oshkosh, WI and surrounding areas

Approved

In business since 2010

Free estimates

River White Remodeling is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and responsibility in all of our jobs. We are a locally owned and operated business with more than 5 years of experience serving Appleton, WI and surrounding areas. There is no job too big, or too small for our team. Call today and let us put our experience to work for you

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Avatar for E2 Innovations, LLC
E2 Innovations, LLC
4.9(
28
)

Serving Oshkosh, WI and surrounding areas

In business since 2018

Free estimates

Credit card accepted

"Erv was professional, timely and precise. He installed ceiling fans, electrical for new hot tub to house and added switches. All very well done."
Lights
lights
Barn Beam
island
island

+1

Response time11 hrs
Response rate87%
Recommended by92%of homeowners
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Tek Electric
2.3(
3
)

Serving Oshkosh, 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
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Generator Install questions, answered by experts

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

Costs range from $500 to $2,500, depending on generator type and installation complexity.

Generators are safe to use as long as they are installed and operated correctly according to the manufacturer's recommendations. The most critical safety tips are to never use a portable or fuel-powered generator inside an enclosed space due to the risk of lethal carbon monoxide poisoning; always operate it outdoors where fumes can dissipate away from your home. Additionally, never attempt to connect a generator to your home’s electrical panel yourself—hire a professional to ensure the setup meets safety standards. Finally, avoid overloading the generator by not connecting more appliances than it is rated for, as this can damage your equipment or cause a fire.

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.

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

The Oshkosh, WI homeowners’ guide to generator installs

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

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