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TRUSTED BY WILLIS, MI HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon22
    Verified generator installs reviews

Verified Reviews for Generator Install pros in Willis, MI

*The Angi rating for Generator Install companies in Willis, MI 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 Willis, MI 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 20, 2026

Find Generator install pros in Willis

Avatar for Reliant Electric
Reliant Electric
5.0(
70
)

Serving Willis, MI and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Small jobs welcome

"Seamless from start to finish. Great communication and really wonderful owner (Kevin) and installers. Would definitely hire again!"
Response time10 hrs
Response rate98%
53 neighbors recently requested a quote
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XPower Electric LLC
5.0(
5
)

Serving Willis, MI and surrounding areas

Approved

Free estimates

Credit card accepted

Offers commercial services

XPower Electric provides professional electrical installations and upgrades across Metro Detroit. We are licensed and insured, delivering safe, code-compliant results with clean and organized installations.\n\nWe specialize in panel upgrades, service changes, EV charger installations, generator connections, lighting, and troubleshooting. Every job is handled with attention to detail and clear communication from start to finish.\n\nOur goal is simple — get it done right the first time and make the process easy for you.

16 neighbors recently requested a quote
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Avatar for Oak Electric Service Inc
Oak Electric Service Inc
4.5(
265
)

Serving Willis, MI and surrounding areas

In business since 1999

Free estimates

Emergency services offered

"The crew from Oak Electric, just installed my generator. They did a great job. Prompt, hard working, professional, cleaned up. Great work, great guys."
Additional Photos
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+58

Response time2 days
Recommended by92%of homeowners
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Avatar for Next Generations Power, LLC
Next Generations Power, LLC
4.6(
24
)

Serving Willis, MI and surrounding areas

In business since 2006

Free estimates

Credit card accepted

"He came promptly and charged me a price that was more than fair to drive out to my home and fix my portable generator. He even took into consideration that we were without power and needed the job done quickly."
Response time2 days
Recommended by95%of homeowners
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Electricity Management
4.3(
37
)

Serving Willis, MI and surrounding areas

In business since 1994

Free estimates

Emergency services offered

"Tom summarized simply is and you get extremely professional work at the absolute best value for your money. Highly professional and gets the job done properly. Honest and does not overcharge you for the work. Have hired him for all our electrical work since the original EV plug install. Always the same great experience."
Commercial Lighting Diagnostic
Automatic Home Generator
New Pendant Bar Lights
New Fireplace Sconces
Automatic Home Generator

+3

Response time5 hrs
Recommended by100%of homeowners
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Avatar for Emergency Mower Service
Emergency Mower Service
5.0(
8
)

Serving Willis, MI and surrounding areas

Free estimates

Emergency services offered

Credit card accepted

We are: Emergency Mower Service, Mobile Repair, Service & Maintenance! We Service the following: Lawn Mowers, Snow Blowers, Generators, Weed Eaters, Tractors, Chainsaws, Trenches, Pressure Washers, and Riding Mowers. The bigger companies use us and contract us out for the repairs. We have decided to cut the middle man out and provide better pricing to customers. We are quick fast and efficient. We work on any small engine running or not. Check out all the services we offer below and call -or- click to schedule a free estimate today!

Lawn Mower Repair, Serice & Maintenance
General Maintenance
Replacing a blade.
Lawn Mower Repair, Serice & Maintenance
Replacing Blades

+22

Recommended by100%of homeowners
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Avatar for Ajax Mechanical LLC
Ajax Mechanical LLC
4.4(
5
)

Serving Willis, MI and surrounding areas

In business since 1988

Emergency services offered

Credit card accepted

"John went "above and beyond" in installing the new A/C system.  He fixed mistakes made by the previous contractor when the old A/C was installed years ago.  He even came up with a creative idea to disguise the pipes/lines running along the side of my house to the condenser, it looks so much better!  And, as promised, the condenser is quiet. 
John cares about doing a job correctly and pleasing the customer.  In fact, he tested my furnace and discovered a problem with the gas line and immediately called the gas company to come over and followed up with me afterwards.
I won't hesitate to call on him again the next time I need work done.
"
Recommended by80%of homeowners
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Showing 1-10 of 28
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.

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.

If you’re deciding between a solar battery versus a generator for the best backup power solution, you can take a few factors into consideration. Solar batteries are quiet while generators can be quite loud. Generators have a lower up-front cost, but they require fuel and ongoing maintenance while solar batteries are more expensive but don’t have many ongoing costs.

The amount of time a standby generator can run continuously is around 3,000 hours on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.

Most homeowners won't be able to claim a home generator as a tax write-off. However, a whole-house generator may be tax-deductible in certain situations depending on its purpose. For instance, if it's needed to power essential medical equipment, it may qualify as a medical expense deduction. Also, in some cases, businesses can deduct a generator as a business expense if it supports operations. Always consult a tax professional to determine eligibility based on your specific circumstances and the applicable IRS regulations.

The Willis, MI 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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