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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon37
    Verified generator installs reviews

Verified Reviews for Generator Install pros in Darien, IL

*The Angi rating for Generator Install companies in Darien, IL 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 Darien, IL 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 October 29, 2025

Find Generator install pros in Darien

Avatar for Rob - Lynn Power Generators, LLC
Rob - Lynn Power Generators, LLC
4.4(
31
)

Serving Darien, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2004

Emergency services offered

Warranties offered

"I have been looking for a reasonably priced generator repair company for some time. The person who answered the phone was extremely courteous and seemed to go out of her way to help me with my service needs. Within 30 minutes the owner called back and based on my description of the problem was able to suggest a simple fix over the phone that I could do and which solved my problem. I will definitely call them for all my future needs."
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+26

9 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for MPower Generators, Inc.
MPower Generators, Inc.
4.8(
25
)

Serving Darien, 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
4 neighbors recently requested a quote
Recommended by95%of homeowners
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Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
5.0(
5
)

Serving Darien, 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.

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+3

39 neighbors recently requested a quote
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Avatar for GLP Electric
GLP Electric
5.0(
32
)

Serving Darien, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"Carlos did a great job installing new flood lights on my garage! Carlos was also very respectful and professional."
Expert electric remodeling service
the freshly revamped bathroom, the first noticeable enhancement is the pristine lighting setup. To the right of the sink, embedded within a white sleek plate, lies the GFCI outlet
Tesla Wall Charger
Kitchen Lighting Upgrade
Foyer Lighting Replacement

+88

3 neighbors recently requested a quote
Recommended by59%of homeowners
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Avatar for Imperial electric
Imperial electric
5.0(
17
)

Serving Darien, IL and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"The service guy came out very quickly. Had a smart thermostat installed. He walked me through setting up the app. Did a fast and a great job. I highly recommend this company if you want it done and done right."
155 neighbors recently requested a quote
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Avatar for Top Grade Electric, CO
Top Grade Electric, CO
4.8(
20
)

Serving Darien, IL and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"Steven and his guys upgraded my breaker panel and installed an EV charger. Communication was great and installation was quick while maintaining high quality work. All this for a reasonable price."
Basement Remodel
Basement Remodel
Shower lights
General lighting
Cabinet lighting

+35

5 neighbors recently requested a quote
Recommended by45%of homeowners
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Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,283
)

Serving Darien, 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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30 neighbors recently requested a quote
Recommended by87%of homeowners
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Avatar for Mr. Electric of Lombard
Mr. Electric of Lombard
4.3(
26
)

Serving Darien, IL and surrounding areas

Approved

Super Service Award Winner

In business since 1994

Free estimates

Emergency services offered

"Great. The electrician was extremely helpful and spent the time to make sure his estimate would be sufficient. He checked his assumptions to make sure they were executable. I would definitely hire again."
Exterior light fixture.
Ev Charger
Interior lighting and switches.
Exterior light fixture.
Interior lighting and switches.

+19

5 neighbors recently requested a quote
Recommended by66%of homeowners
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Avatar for Onix Electric Services LLC
Onix Electric Services LLC
5.0(
12
)

Serving Darien, IL and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"Fabian is a true professional. His communication during the walk-through and paperwork laying out the job was fabulous. Even better was his workmanship and clean up upon completion. Would recommend him to anyone looking for an electrician! Worth every penny!"
Response time1 day
Response rate92%
5 neighbors recently requested a quote
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Showing 1-10 of 126
Generator Install questions, answered by experts

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.

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.

While the rating will tell you how many watts the refrigerator needs at the peak of its cycle, it requires additional wattage to start. At the bare minimum, you’ll need a 1,500-watt generator to get the fridge up and running after a blackout. A 2,000-watt generator should be sufficient for most home refrigerators.

In some situations, yes. Never try to put biofuel into any home generator without checking the specifics first. If a generator has the ability to run on diesel, it can also run pure biofuel (the clear kind made from seed oils, for example). But if you are using biofuel made from animal fats or vegetable oils, the generator will need significant modifications before it can handle a sludgier type of biofuel.

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

The Darien, IL homeowners’ guide to generator installs

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

See all articles