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Zander Electrical Services, LLC
4.8(
28
)

Serving Sullivan, WI and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

"Very pleased with quality, promptness following schedule, and care taken not to damage hosta plants in the construction area to install 18 kw whole home generator and transfer switch. The project went smoothly in spite of a one day rain delay. The generator and transfer switch were tested with a simulated loss of utility power and everything worked as expected - generator started and transfer switch allowed the generator to power the house automatically. When utility power was reenabled the transfer switch moved back to utility power position and the generator shut down. The price was fair and would certainly have no reservations to recommend them for any electrical work and would use them again."
Response time1 day
16 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Wisconsin Generators LLC
Wisconsin Generators LLC
5.0(
7
)

Serving Sullivan, 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

5 neighbors recently requested a quote
Avatar for In Phase Electric & Air
In Phase Electric & Air
4.1(
170
)

Serving Sullivan, WI and surrounding areas

Approved

In business since 2009

Emergency services offered

Small jobs welcome

"Got a new air conditioner and furnace installed in a day....Tyler was able to bypass the circuit board in the furnace so that we had air conditioning until they could install the new units.... very professional and timely"
AC Tune Up
Nee an AC Tune Up?
Electrical Panel
Team and Job photos
Team and Job photos

+53

Response time5 hrs
98 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Everlight Solar
Everlight Solar
4.4(
24
)

Serving Sullivan, WI and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"Everlight Solar and their products are great, I would highly recommend it! I was extremely skeptical on this at first, but my energy consigliere Nick Carnagey was very patient and made sure every concern I had was fully addressed. And anytime I had a question or concern he and the rest of the staff at Everlight were always super helpful and quick to respond. The system looks great! It consistently performs as Everlight said it would or better. Our first energy bill with the system on for a month was only $45 which was mostly the basic hookup and service fees. The install process took only an afternoon and the install guys could not have been more professional or courteous. You really can't go wrong with the folks at Everlight and the systems they use and install."
Teamwork
Teamwork
Teamwork
Teamwork
Teamwork

+16

Response time2 days
121 neighbors recently requested a quote
Recommended by71%of homeowners
Avatar for WIL-SURGE ELECTRIC, INC.
WIL-SURGE ELECTRIC, INC.
5.0(
5
)

Serving Sullivan, WI and surrounding areas

Approved

In business since 1993

Free estimates

Warranties offered

"I hired them for some electrical work at my home and was impressed right away with how straightforward and honest they were. The pricing was very fair compared to other quotes I received, and they took the time to explain exactly what I was paying for so there were no surprises. The technician arrived on time, worked efficiently, and clearly knew what he was doing. Everything was completed to a high standard, and you can tell they focus on doing quality work rather than cutting corners. It’s not easy to find someone who balances good pricing with solid workmanship, but they nailed both. Overall, great value for the money. I’d definitely recommend them to anyone looking for dependable service at a fair price, and I wouldn’t hesitate to call them again."
Panel Change
Panel Relocation
Panel Upgrade
Surge Protection
Whole Home Generator

+3

22 neighbors recently requested a quote
Avatar for Midwest Energy Solutions, Inc.
Midwest Energy Solutions, Inc.
5.0(
33
)

Serving Sullivan, WI and surrounding areas

Approved

In business since 2001

Emergency services offered

Customers say: Quality work

"Excellent work. They ran electrical wiring in the attic, mounted electric boxes/switches, and installed two ceiling fans/lights. They had the right tools and knew what to do. They did the work for less than original estimate. This was for a job that one other firm (upon seeing the job) turned it down as being too difficult. I highly recommend them."
6 neighbors recently requested a quote
Recommended by9%of homeowners
Avatar for Double U Electric LLC
Double U Electric LLC
4.5(
8
)

Serving Sullivan, WI and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

At Double U Electric, we take pride in offering every one of our customers electrical services at a fair price, while never straying away from our focus on customer service. We offer full range electrical services for anything around your home.

Additional Photos
Response time10 hrs
29 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for ICRA Electric LLC
ICRA Electric LLC
5.0(
3
)

Serving Sullivan, WI and surrounding areas

Approved

In business since 2010

Free estimates

Offers commercial services

"In 2019 I bought an older home and hired ICRA Electric to rewire the entire home including upgrading the electric panel. Aaron Mattingly (owner) was referred to me by someone I trusted. I typically only use contractors by referral. Not only was his bid lower than the other bids I had received, he was very flexible with my schedule and accommodating with changes I made throughout the job without gouging me. Aaron also provided practical electrical suggestions for future needs that I wasn’t even thinking about and ensured everything I wanted was completed according to code. I have never done an online review in the past, but it is rare these days to find a contractor that is more about making sure you will be happy with the final product for years to come than getting as much money out of you as they can. There are many reputable contractors out there. The challenge is navigating through the others who don’t want to be found out. ICRA Electric is one of the good ones."
Service upgrade
Service upgrade
5 neighbors recently requested a quote
...
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FAQs for generator install projects in Sullivan, WI

When maintained properly, a whole-house generator can last up to 20 years. Costs to maintain and repair generators 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.

Installing a whole-house generator costs 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:

  • Portable generators with 1kW–7.5kW capacity: $500–$2,000

  • Partial generators with 9kW–20kW capacity: $2,000–$6,300

  • Whole-house generators with 22kW–48kW: $5,000–$18,000

When choosing the right size generator 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:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 watts

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. 

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 value of installing a whole-house generator is that your home has guaranteed power, even if the power grid in your area is down. Whether a whole-house generator is worth installing in your home depends on how often you use it, your home’s location, and your lifestyle. For example, installing a whole-house generator is likely worth it if you:

  • Experience frequent or prolonged power outages

  • Work from home

  • Store a lot of cold food

  • Have a sump pump

  • Have a pump for well water

  • Use electronic medical devices

  • Live in a climate requiring heating or cooling

The Sullivan, WI homeowners’ guide to generator installs

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