Top-rated generator install pros.

Best generator install pros near Delavan, IL

Enter your zip and get matched with up to 5 pros

Need a pro for your generator install project in Delavan, IL?

Select your specific project to find the pro for you.

Top-Rated Generator install pros in Delavan - Updated Nov 2026

Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
5.0(
5
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business

Serving Delavan, IL and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

We are the experts in the field of Whole Home Generator Sales and Installation, with over 20 years of experience in the game.\nWe provide turn-key installation by licensed professionals - 24 hour emergency service - Remote Monitoring - Long term maintenance and service by factory trained technicians.

Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+3

17 neighbors recently requested a quote
Avatar for Shumaker Electric, LLC
Shumaker Electric, LLC
4.8(
8
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Delavan, IL and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"Job: install fan and switch for it in spot with no electrical box yet. 1 hr 56 min arrival to departure. Pros: Called me the next day after reaching out through Angie. Friendly to talk to during booking and while working at the house. The work went well nstalling the ceiling fan and a switch for it where one wasn't. Cons: Never quoted job (figured it couldn't be that bad for a fan install so didn't ask - big mistake) and appointment was a month out for 7:30am on a Friday. Informed them I worked nights at the time of booking. They text me at 6am that day to inform they'd ould be late and arrived at 9:46a (I'm 25 hrs awake at the point they arrive). Invoice for $737 comes across. Inquired about the $300 for labor for one and $375 for labor for the other and was told "We usually charge round trip, and I only charged you one way. And there was no existing switch or fan location,if it was as simple as just changing a fan out there would have only been one". Double labor charge unfair."
My jobs
My jobs
My jobs
My jobs
My jobs

+6

Response time1 day
Response rate100%
2 neighbors recently requested a quote
Avatar for JMC Electric
JMC Electric
4.6(
10
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Delavan, IL and surrounding areas

In business since 2013

Free estimates

Emergency services offered

"First of all, Manny was on time and as polite in person as over the phone. Manny worked very conscientiously from the start to the finish of both of my projects. He takes doing a good job seriously and is very efficient. I am fully comfortable with giving his name and number out to friends and family. I've already given it to my employer. In the future, I plan on calling them for all electrical needs. The price compared well with others in the area."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+8

Response time30 mins
Recommended by77%of homeowners
While and Son Electric
5.0(
1
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Delavan, IL and surrounding areas

In business since 1995

Offers commercial services

At While and Son Electric, it is our mission to provide the highest quality of service all aspects of our business. With 25 years of experience, we are extremely thorough in services that we provide and aim to be very receptive to any client's issues, questions or concerns and handle them promptly and professionally. We take necessary steps to ensure that our clients are completely satisfied with all of our contractual and assumed responsibilities. Above all else, we will fulfill these responsibilities while maintaining the highest ethical standards in both of our work and our character. Call us today!

Response time2 days
Recommended by100%of homeowners
Showing 1-10 of 11
Generator Install FAQs, 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.

Homeowners can often access federal tax credits, such as the Investment Tax Credit (ITC), which covers a percentage of installation costs. Many states and utilities offer additional rebates, grants, or performance-based incentives. These programs can significantly lower your upfront investment. Check the Database of State Incentives for Renewables and Efficiency (DSIRE) or contact your local energy office for current offers.

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.

You may need a permit for a portable generator if you’ll be installing a transfer switch for your primary residence or similar work. Otherwise, a permit for other uses may not be necessary. Check your local building codes or ask a local generator installer for more information about your local regulations.

Yes, in some locations, it is required by the National Electric Code (NEC) to have a transfer switch installed for electrical emergencies. In addition to following electrical code, generator transfer switches ensure your home is fully protected during a power outage. By switching the power from the main breaker to the generator breaker, you can seamlessly operate your HVAC, lights, appliances, devices, and more during an emergency. 

The Delavan, IL homeowners’ guide to generator installs

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