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TRUSTED BY GUTHRIE, OK HOMEOWNERS

  • Average homeowner rating star icon4.6
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  • Verified reviews icon12
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Find Generator install pros in Guthrie

Avatar for Spark Shark Electric
Spark Shark Electric
4.8(
50
)

Serving Guthrie, OK and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

We specialize in electrical services, repairs, installs, lighting, panel upgrades, ceiling fans, and more! We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

1 neighbors recently requested a quote
Recommended by93%of homeowners
Whelans Electrical Services
New to Angi

Serving Guthrie, OK and surrounding areas

Approved

Emergency services offered

Small jobs welcome

Offers commercial services

At Whelan Electrical Services, we are committed to providing safe, reliable, and high-quality electrical solutions for residential and light commercial customers. With years of hands-on experience in electrical construction, maintenance, troubleshooting, and service work, we take pride in delivering honest recommendations, exceptional workmanship, and outstanding customer service.\nWhether you need electrical repairs, panel upgrades, lighting installation, generator connections, EV charger installation, troubleshooting, or new electrical installations, we approach every project with professionalism, attention to detail, and a commitment to safety. Our goal is to complete every job correctly the first time while exceeding customer expectations.\nWhen you choose Whelan Electrical Services, you’re choosing dependable service, transparent communication, and quality work you can trust.

GENERATOR SUPERCENTER
4.2(
36
)

Serving Guthrie, OK and surrounding areas

In business since 1980

Free estimates

Credit card accepted

"The electricians and plumbers were very professional in their demeanor. They worked as a team, everyone knew what to do and how to do it. They answered all my questions, but didn't let that distract them from their job. I was impressed with the speed of the installation. They cleaned up after themselves and took their trash with them."
Response time3 days
Recommended by100%of homeowners
Avatar for Coover Electric, LLC
Coover Electric, LLC
4.8(
25
)

Serving Guthrie, OK and surrounding areas

In business since 2022

Free estimates

Offers commercial services

"The customer service was excellent! I had a lot of questions and they responded quickly with answers to help me decide on what vehicle charger I needed to buy. They got me scheduled quickly and the install was professional and fast!"
Response time4 hrs
Response rate93%
Recommended by91%of homeowners
Avatar for Flanco Electric
Flanco Electric
4.7(
30
)

Serving Guthrie, OK and surrounding areas

In business since 2022

Free estimates

Warranties offered

"Pro was on time snd very responsive to questions. Appointments were available quickly. Needed new electrical panel. Pro was able to show me why and explain the pros and cons of doing the work. Pro also provided multiple options."
Generac Whole Home Generator
Response time6 hrs
Response rate97%
Recommended by92%of homeowners
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Generator Install questions, answered by experts

As a safety measure, you should always turn off the main breaker while operating your generator’s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.

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.

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.

Carbon monoxide emissions aren’t only dangerous to human life, but they also harm our planet. While natural gas generators emit lower levels of CO than other fuel sources, there are still ways to reduce emission levels. For example, shop around for an eco-friendly generator that complies with current emission standards. Also, make sure your generator is serviced regularly to avoid CO buildup. 

The Guthrie, OK homeowners’ guide to generator installs

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