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TRUSTED BY SUMMIT, IL HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon17
    Verified generator installs reviews

Find Generator install pros in Summit

Avatar for MPower Generators, Inc.
MPower Generators, Inc.
4.8(
25
)

Serving Summit, IL and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"There was a mistake in the original invoice which they quickly corrected. We will engage the to annually maintain our generator."
Powered by MPower Generators
Power outages are a thing of the past.
Gravel base
Gravel base needs to be compacted
Prefabricated cement pad

+8

Response time1 day
3 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Imperial electric
Imperial electric
5.0(
16
)

Serving Summit, IL and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"I had an outrageous quote (nearly $2K) from a big multi service contractor and looked here for a small business electrician. Daniel of Imperial Electric came out straight away and fixed the problem down the line that had taken out power to two of the kitchen outlets. It was a puzzle but he solved it for $260. I will be referring him to friends and family."
154 neighbors recently requested a quote
Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,280
)

Serving Summit, IL and surrounding areas

Approved (Corporate)

In business since 1971

Free estimates

Emergency services offered

"Four Season service was awesome. The installers were friendly, professional, and knowledgeable. The installers cleaned up work area after they finished the job."
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Response time9 hrs
28 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for M.T. Kelley Electric LLC
M.T. Kelley Electric LLC
5.0(
4
)

Serving Summit, IL and surrounding areas

Approved

In business since 1994

Warranties offered

Credit card accepted

"Hello, MTK electric was fantastic to deal with, their communication was top notch, they were very transparent about the entire process and the overall price was fair. Would definitely look for their assistance in the future."
Response time8 hrs
Response rate97%
6 neighbors recently requested a quote
Avatar for Mister Sparky of South Chicagoland
Mister Sparky of South Chicagoland
5.0(
5
)

Serving Summit, IL and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

Mister Sparky of South Chicagoland proudly serves homeowners throughout the City of Chicago and the surrounding south suburbs. Our team is committed to providing safe, reliable electrical service with exceptional professionalism and attention to detail. Whether you need a quick repair, panel upgrade, lighting installation, or a larger project, we stand behind our work with a customer satisfaction guarantee. For added convenience, financing options are available for qualifying projects. Contact us today — we look forward to earning your business.

51 neighbors recently requested a quote
Avatar for Enable Electric
Enable Electric
4.8(
3
)

Serving Summit, IL and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"My experience working with Carlos at Enable Electric was seemless. Carlos was extremely attentive with communication, on time for visits and completed my electrical panel swap successfully. I highly recommend Enable Electric and will most definitely be hiring them again for additional projects in the very near future!"
Response time5 hrs
2 neighbors recently requested a quote
Recommended by100%of homeowners
Scardino Electric, Inc.
5.0(
3
)

Serving Summit, IL and surrounding areas

Approved

In business since 1970

Free estimates

Credit card accepted

With over 50 years of business serving the Chicago metro area, Scardino Electric, Inc., is the way to go for all your wiring and panel upgrade needs. We take great pride in our extreme professionalism, timeliness, and superior customer service on every job. We make sure to do excellent work on every visit, answer all questions, and develop lasting relationships with all our clients so, that the next time service is needed, there will be no question on who to call. Contact us today for a free estimate. Satisfaction Guaranteed!

Response time11 hrs
Response rate100%
Recommended by100%of homeowners
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Generator Install questions, answered by experts

You can determine what size generator you need for a transfer switch by matching the switch to the largest outlet on your generator. Larger generators can power up to 10 circuits, while most 5,000-watt generators can provide power to six circuits. So, if your generator’s largest outlet is 30 amps, you’ll need a 30-amp transfer switch.

To reduce AC startup power for a whole-house generator, install a soft start kit or hard start capacitor, which lowers the initial surge by gradually ramping up the compressor. Using a smart load manager can also help by staggering startup loads, preventing a system overload and future costly repairs.

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.

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.

Many services include assembling the unit and securing it in the window. Confirm with your provider.

The Summit, IL homeowners’ guide to generator installs

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