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CERTIFIED ELECTRIC LLC
5.0(
6
)
Fixed Generator - InstallPortable Generator - Install

Serving Flossmoor, IL and surrounding areas

Approved

In business since 2019

Emergency services offered

Offers commercial services

Certified Electric is a licensed, bonded, and insured electrical contractor dedicated to providing safe, reliable, and high-quality electrical services.\n\nWe specialize in residential electrical work, including panel upgrades and EV charger installations.\n\nOur mission is to deliver honest service, expert craftsmanship, and lasting solutions while treating every customer’s home with the care and professionalism it deserves.\n\nLet’s Make It Happen. ⚡

Response time1 hour
Response rate89%
Recommended by16%of homeowners
Avatar for M.T. Kelley Electric LLC
M.T. Kelley Electric LLC
5.0(
4
)
Generator - Install - For Business

Serving Flossmoor, 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 rate99%
1 neighbors recently requested a quote
Scardino Electric, Inc.
5.0(
3
)
Generator - Install - For BusinessGenerator - Repair - For Business

Serving Flossmoor, 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
Omar Santacruz
5.0(
1
)
Fixed Generator - InstallPortable Generator - Install

Serving Flossmoor, IL and surrounding areas

Approved

Hello homeowner/customer, my name is Omar Santacruz and I’m your local electrician, I have 5+ years of electrical knowledge and 10+ years of mechanical experience. When it comes down to any repair or fix please don’t hesitate to call and ask around, I will do my best to give you all details and break down costs regarding any upcoming projects, past repairs or even present emergencies. Feel free to reach out @(630)352-6190\nHope to get to work with you, God bless.\n\n¡Hola, propietario(a)/cliente!\nMi nombre es Omar Santacruz y soy su electricista local. Cuento con más de 5 años de experiencia en trabajos eléctricos y más de 10 años de experiencia en mecánica. Cuando se trate de cualquier reparación o instalación, no dude en llamarme o hacer cualquier pregunta. Con gusto le brindaré toda la información necesaria y un desglose claro de los costos relacionados con proyectos futuros, reparaciones anteriores o incluso emergencias actuales.\nNo dude en comunicarse conmigo al (630) 352-6190.

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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.

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

Portable generators provide backup power for essential appliances during outages and are easy to relocate.

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. 

If you’re wondering if you can use your electric vehicle as a backup battery, it depends on whether your EV is compatible with bidirectional charging. This technology allows energy to flow both ways, enabling vehicle-to-home (V2H) backup power, vehicle-to-load (V2L) for appliances and camping, and vehicle-to-grid (V2G) to support the power grid. Compatible EVs convert stored DC energy into usable AC power, helping reduce energy costs and enhance grid stability while providing emergency backup power.

The Flossmoor, IL homeowners’ guide to generator installs

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