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Whelans Electrical Services
New to Angi

Serving Washington, 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.

Avatar for OKCPowerCare
OKCPowerCare
5.0(
23
)

Serving Washington, OK and surrounding areas

In business since 2025

Free estimates

Emergency services offered

"We had a generator and home surge protector installed. They were prompt, polite, and efficient. They showed us how to program/use the generator, cleaned up, etc. I definitely recommend OKCPowerCare."
Generator Install
Generator Install
Response time7 hrs
Avatar for Active Electric LLC.
Active Electric LLC.
5.0(
10
)

Serving Washington, OK and surrounding areas

In business since 2014

Free estimates

Emergency services offered

"It was completed quickly and professionally just as it should with any licensed electrician at a fair price. Justin and Rob's work was second to none! Owner, Justin at Active Electric will be my first choice for any future electrical needs for the future. If you need a real electrician to do it right call Active Electric you will not be disappointed!"
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+4

Recommended by80%of homeowners
Avatar for Passion Electric
Passion Electric
5.0(
8
)

Serving Washington, OK and surrounding areas

In business since 2015

Free estimates

Emergency services offered

"I scheduled an appointment with Passion Electric. They were very helpful on the phone and answered all my questions. I had an appointment for an estimate on updating some electrical work in my home. The electrician arrive on time and was very helpful and knowledgeable. He answered all my questions and walked me through what I needed to get fixed now and the things I could get fixed down the road. I needed to get some plugs changed out and update my panel. He set me up with a new appointment and walked me through all what to expect."
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+2

Recommended by100%of homeowners
Avatar for Passion Electric
Passion Electric
4.8(
26
)

Serving Washington, OK and surrounding areas

In business since 2015

Free estimates

Credit card accepted

"Lance and David were so kind and knowledgeable! Did everything we requested And made sure it was as cost effective as possible. These two gentleman are the only Electricians I will ever use. I highly recommend!"
Response time1 day
Response rate87%
Recommended by100%of homeowners
Avatar for Airco Service Inc
Airco Service Inc
4.6(
429
)

Serving Washington, OK and surrounding areas

In business since 1961

Free estimates

Emergency services offered

"They were extremely punctual for both the estimate, and the actual installation, with full explanation of how the machine works including the comparison between the cost of a tankless and a standard heater,. In addition, there has been some vibration noise (that only one member of the family can hear!) and they have been extremely thorough in working to lessen it, while being cheerful through the whole process, despite having to make extra trips to do so."
Recommended by92%of homeowners
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Generator Install questions, answered by experts

Generators are safe to use as long as they are installed and operated correctly according to the manufacturer's recommendations. The most critical safety tips are to never use a portable or fuel-powered generator inside an enclosed space due to the risk of lethal carbon monoxide poisoning; always operate it outdoors where fumes can dissipate away from your home. Additionally, never attempt to connect a generator to your home’s electrical panel yourself—hire a professional to ensure the setup meets safety standards. Finally, avoid overloading the generator by not connecting more appliances than it is rated for, as this can damage your equipment or cause a fire.

Yes. You can connect your home back-up battery to a generator with its designated charger. Be sure that the output of the generator matches the input requirements for the battery for best results.

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

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.

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

The Washington, OK homeowners’ guide to generator installs

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