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Avatar for Smart Power Services
Smart Power Services
4.3(
6
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Lenexa, KS and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

We are a small business based in Lee's Summit, MO. Our goal is to cultivate long lasting relationships with all our clients. Above all, we value honesty and integrity in the way we do business. We do it all: Standby Generators - maintenance and repairs, installations, residential/commercial/industrial Residential - service repairs, panel upgrades, EV chargers, remodels, and new construction. Commercial/Industrial - service repairs, electrical additions, remodels, and new construction. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward working with you!

Cummins Generator
Kohler 12 kW
Response time7 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for Hamilton Electric
Hamilton Electric
4.3(
114
)
Fixed Generator - Install

Serving Lenexa, KS and surrounding areas

Approved (Corporate)

In business since 1950

Emergency services offered

Warranties offered

"Alfonso and his team were amazing! They were such hard workers (they were even at our house past 8pm on a Friday night to make sure the install got finished). We are appreciative of their professionalism and expertise."
Generator Installation
Response time8 hrs
Recommended by86%of homeowners
Avatar for Ferris Electric LLC
Ferris Electric LLC
5.0(
5
)
Generator - Install - For Business

Serving Lenexa, KS and surrounding areas

Approved

In business since 2021

Free estimates

Offers commercial services

Master electrician, Lance Ferris, is equipped with nearly 20 years experience in the electrical industry. Ferris Electric services both commercial and residential electrical work as well as solar panel installation. We proudly serve our customers with integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!

Response time8 hrs
Response rate85%
Recommended by80%of homeowners
Avatar for CPC Appliance Repair
CPC Appliance Repair
4.6(
45
)
Fixed Generator - RepairPortable Generator - Repair

Serving Lenexa, KS and surrounding areas

Approved

In business since 1995

Credit card accepted

Customers say: Quality work

"This was for a washing machine that was not dispensing fabric softener. Initial appointment was scheduled for first thing in the morning, and when the repairman didn't show I had to call. There was an apology and an explanation of a mix up with the workorder tickets, and a new time was set for 11:30am that day. The repairman showed up at 11:30 and worked for a solid 4 hours on the problem, testing many different things and then running tests after installing the new parts to ensure the fix worked. He was great about explaining the issue and the price was reasonable for the time he invested."
Recommended by97%of homeowners
Avatar for Full Circuit Electric
Full Circuit Electric
5.0(
5
)
Portable Generator - Install

Serving Lenexa, KS and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

""I needed some electrical work done at my house, and Luke was great! He came out quickly, gave me a fair bid, and got it done quickly. Luke is very honest with you and a hard worker as well. I'd recommend for any electric services.""
Electrical
14 neighbors recently requested a quote
Avatar for KB Complete Electrical
KB Complete Electrical
4.6(
5
)
Fixed Generator - Install

Serving Lenexa, KS and surrounding areas

Approved (Corporate)

In business since 1986

Free estimates

Credit card accepted

At KB Complete, every job is an opportunity to highlight our unwavering dedication to meticulousness, ensuring every detail is accounted for. We view our role as your partner in maintaining a safe, comfortable, and efficient home, offering tailored solutions that address all your needs.

Response time2 days
28 neighbors recently requested a quote
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Generator Install questions, answered by experts

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

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

Here’s what you can run with different wattages and types of generators:

Portable generator:

  • 2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. 

  • 4,000 watts will keep two large appliances operating and a few smaller devices.

  • 8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.

Partial to whole-house generator:

  • 20,000 watts and above will make it seem like your home’s power is still on.

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.

Yes, natural gas generators can work without electricity. Natural gas generators are a common type of backup or whole-house generator that operates when the electrical grid isn’t working. The trick is using a transfer switch (which usually needs to be installed with the generator) that safely switches the home electrical system from the power grid to generator power when needed.

The Lenexa, KS homeowners’ guide to generator installs

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