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Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
5.0(
5
)

Serving Johnsburg, 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

41 neighbors recently requested a quote
Avatar for Blue Diamond Electric LLC
Blue Diamond Electric LLC
5.0(
21
)

Serving Johnsburg, 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 AGI Lab, Inc.
AGI Lab, Inc.
5.0(
24
)

Serving Johnsburg, IL and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"Anton from AGI Lab, responded promptly to my inquiry through home advisor. He quickly schedule me for a quote and assured me there was no charge for the quote. Anton arrived at the scheduled time and assesed the issue at hand. He tested all the components necessary to identify the issue. To our suprise the issue was not at all with our electrical, it was with the actual equipment. He assured us that the electric was fine and nothing to worry about. We are thankful for his time and responsiveness."
Kitchen and living room
Kitchen
Old electrical panel
New elecrical panel
New electrical panel Siemens

+7

Response time9 hrs
Recommended by100%of homeowners
Avatar for WIN Universal, LLC
WIN Universal, LLC
4.9(
20
)

Serving Johnsburg, IL and surrounding areas

Approved

In business since 2013

Free estimates

Warranties offered

"WIN Universal was awesome! He showed up when I expected him to and got to work right away. He verified the circuits and replaced the Breaker with a GFCI Breaker to protect all of outlets in my Kitchen. I plan to use him for all future electrical work."
Response time5 hrs
1 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Ferrer Electric
Ferrer Electric
4.9(
97
)

Serving Johnsburg, IL and surrounding areas

Approved

In business since 1979

Free estimates

Emergency services offered

"I was thrilled with Ferrer Electric. Customer service was exceptional. Their work was on- time, professional, and fully compliant. Eddie was knowledgeable and a pleasure to work with. The work consisted of installing two new 20 amp circuits, multiple outlets, removing and installing four new light fixtures. I highly recommend Ferrer Ellectric."
Light Replacemernt
Light Replacement
Ceiling Fan replacement
Ceiling Fan Replacement
Light Replacement

+22

Response time9 hrs
1 neighbors recently requested a quote
Recommended by96%of homeowners
Jorge Lovato Electrical
4.8(
31
)

Serving Johnsburg, IL and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"Jorge was friendly and knowledgeable. Price seemed fair for installing a security camera for me, but we had to work out some challenges getting power to the right spot. Only gripe is that he didn't give a receipt for work done, sort of important for electrical work being done on the house."
Response time3 hrs
Response rate94%
Recommended by100%of homeowners
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Showing 1-10 of 433
Generator Install questions, answered by experts

Costs depend on generator type, labor, and additional wiring or transfer switch requirements.

A portable generator can supply power to selected appliances and circuits in a home, but it's generally not designed to handle the entire household's electrical needs simultaneously. Portable generators have limited wattage capacity, so they are only designed to power essential devices and electronics temporarily until local power is restored. If your power needs outweigh the capabilities of a portable generator, consider installing a whole-home generator instead.

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.

Natural gas generators are designed to run for extended periods of time, such as power outages during a natural disaster. Since there’s no limit to the supply of natural gas, they don’t need to stop for refills. However, generators do need maintenance, including pauses to check and add oil. Constantly running them will also cause a lot more wear and tear, leading to a shorter lifespan.

The Johnsburg, IL homeowners’ guide to generator installs

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