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TRUSTED BY MOUNT PROSPECT, IL HOMEOWNERS

  • Average homeowner rating star icon4.2
    Average homeowner rating
  • Verified reviews icon32
    Verified generator installs reviews

Find Generator install pros in Mount Prospect

Avatar for LSVG Electrics Inc
LSVG Electrics Inc
4.8(
57
)

Serving Mount Prospect, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"Wasn’t positive that a battery was needed until they arrived to do the oil change so had to wait a couple of days until new battery arrived but they came back as soon as it did and finished everything they promised. I very satisfied with the work and would hire them again without hesitation"
Electrical Project
Electrical Project
Electrical Project
Electrical Project
Electrical Project

+589

Response time7 hrs
Response rate98%
5 neighbors recently requested a quote
Avatar for Scott Nelson Electric Inc
Scott Nelson Electric Inc
4.9(
365
)

Serving Mount Prospect, IL and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"Nelson Electric is the best electrical contractor I’ve used in my thirty-eight years of owning and updating my homes. It is difficult to find an excellent contractor who is willing to take on a major remodeling project in old construction, and who handles it efficiently, cost-effectively, and with perfection. This time we were remodeling a 110 year-old bathroom. When we got down to the studs, joists, and rafters, the plans were worthless because of all the surprises. Unphased, the crew was able to trace every hidden wire to destination and source, re-route them as needed, install a new, larger, circuit breaker box, pull wire through neatly, clearly identify and label everything, and finish beautifully the lighting, overhead heating, floor heating, and exhaust fixtures, making for a beautiful bath. Thank you, Scott!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+4

Response time1 day
2 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Blue Diamond Electric LLC
Blue Diamond Electric LLC
5.0(
21
)

Serving Mount Prospect, IL and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Danny came to my house to install electrical panel. I already had everything for the install the swap the old one out put the new one in really fast I was surprised I told him my lights would flicker sometimes and he check the ground to the meter and it was corroded, he cleaned it off and fix the problem install looks great. Everything works perfect. I will be hiring him again for future projects."
Before & After of the bar area
Electrical Project
Electrical Project
Bar area
Electrical Project

+26

Response time1 day
6 neighbors recently requested a quote
Recommended by71%of homeowners
Avatar for KOLOMNA SERVICES LLC
KOLOMNA SERVICES LLC
4.9(
214
)

Serving Mount Prospect, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Credit card accepted

"Igor and Dmitry were great. Arrived right on time. Good communication before, during and after. Installed 3 new interior lights in our laundry room, and two outdoor lights in the backyard cost effectively in a timely manner. Highly recommend them."
Attic fan replacement.
Attic fan replacement.
Response time7 hrs
Response rate98%
4 neighbors recently requested a quote
Avatar for Blazer Electric Co
Blazer Electric Co
4.6(
379
)

Serving Mount Prospect, IL and surrounding areas

Approved

Super Service Award Winner

In business since 1987

Free estimates

Emergency services offered

"Blazer installed many wifi enabled light switches. Work was done quickly and professionally and have not had any post-installation issues since the install."
Now the lights are in...
We had to cut some holes in order to install new electrical connections
Job complete!
A splash of color...
Looking good in a daylight

+11

Response time1 day
11 neighbors recently requested a quote
Recommended by95%of homeowners
Electric Mechanical Solutions LLC
5.0(
21
)

Serving Mount Prospect, IL and surrounding areas

Approved

In business since 2005

Credit card accepted

Offers commercial services

Electric Mechanical Solutions, LLC\nLicensed - Insured - Nearly 20 Years of Professional Experience\n\nOur minimum charge is $250 to $400 and up, depending on distance, job complexity, and scope. This includes small jobs, repairs, or up to the first hour of licensed labor. Anything beyond the first hour is priced clearly on-site. This is licensed contractor pricing - not handyman rates. Our pricing is fair, honest, upfront, and transparent. No hidden fees, no surprises, no games.\n\nWe proudly offer residential, commercial, and industrial services, including troubleshooting, EV chargers, panel upgrades, surge protection, lighting installations, dedicated circuits, subpanels, garage circuits, and more.\n\nPlease Note:\n - No free quotes for troubleshooting, repairs, or small jobs by phone/text.\n - If you?re price shopping or comparing numbers, this is not the right fit.\n\n- If you care about safety, quality, and reliable professional work ? let?s connect.

1 neighbors recently requested a quote
Recommended by5%of homeowners
Avatar for No Static Electricity
No Static Electricity
5.0(
27
)

Serving Mount Prospect, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Free estimates

Warranties offered

"Devon was retained to install an EV charging port. He was knowledgeable, experienced, professional, punctual and courteous. I wouldn’t hesitate to recommend him."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+6

Response time1 day
25 neighbors recently requested a quote
Recommended by76%of homeowners
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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.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

The cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500 to $2,000

  • Partial-Home Generators (9kW–20kW): $2,000 to $6,500

  • Whole-House Generators (22kW–48kW): $5,000 to $18,000

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

While standby generators provide essential backup power, they can fail when you need them most due to lack of maintenance, fuel supply issues, dead batteries, electrical problems, or improper installation. To avoid costly failures, professional installation and regular maintenance are crucial. Licensed technicians ensure safety, uphold warranty requirements, comply with regulations, and provide expert servicing.

A home that is 2,500 square feet will likely need a 20kW to 25kW generator. Consult your local generator installer to confirm the generator size needed to power your home before purchasing a new one. Be sure to consider how much power your necessary devices need to run.

The Mount Prospect, IL homeowners’ guide to generator installs

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