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TRUSTED BY DES MOINES, WA HOMEOWNERS

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    Average homeowner rating
  • Verified reviews icon11
    Verified generator installs reviews

Find Generator install pros in Des Moines

Avatar for The Juice Company, Inc.
The Juice Company, Inc.
4.3(
145
)
Generator - Install - For Business

Serving Des Moines, WA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"From estimate, to selection of The Juice Company, to scheduling, they made the entire process painless. Had 2 15 amp "peanut" breakers installed to replace an existing breaker and establish a new circuit, and 2 new outlets installed. We also had low voltage network cable roughed in so I could terminate it later, and everything was done not only properly, but quickly. I would definitely recommend them to anyone needing electrical work done in the South Sound region."
Hmart
Resturant in Hmart
Grocery
Hmart
Hamrt

+2

Response time1 day
Recommended by76%of homeowners
Avatar for Skyline Electrical Services LLC
Skyline Electrical Services LLC
4.8(
51
)
Fixed Generator - Install

Serving Des Moines, WA and surrounding areas

Approved

In business since 2001

Free estimates

Credit card accepted

"I had told them I would be buying an EV and they said to give them a ring when I was ready to install the charger. Bought the car on Saturday, called them on Monday, installed on Thursday with no drama, apparently excellent workmanship, and in a timely manner. They were even able to do it without disturbing our internet access despite having to move breakers around."
 Electric Vehicle
 Electric Vehicle
 Electrical Panels
 Electrical Panels
 Electrical Panels

+11

Response time3 days
Response rate100%
21 neighbors recently requested a quote
Avatar for In-House Electrical Services, Inc.
In-House Electrical Services, Inc.
4.5(
1,757
)
Portable Generator - Install

Serving Des Moines, WA and surrounding areas

Approved

In business since 2002

Emergency services offered

Warranties offered

"We had In-House Electrical replace/upgrade our main panel as well as setup a generator hook-up and A/C outlet outside. Adam and Avery were phenomenal - they were thorough, kept in constant communication with me during the project to ensure things were being done as I liked, and left the place looking better than when they showed up. They'll be my first call in the future for any electrical work I need done."
Response time40 mins
Response rate100%
8 neighbors recently requested a quote
Avatar for VoltLab Electric
VoltLab Electric
4.8(
16
)
Fixed Generator - InstallPortable Generator - Install

Serving Des Moines, WA and surrounding areas

Approved

In business since 2025

Credit card accepted

"I called Voltlab and Evan Cade to advise me on what to do about some ungrounded outlets in my house. After helpful discussion during a complimentary inspection of the rest of my electrical system it was clear I needed serious attention to more than a few outlets. What I thought would be a simple service call turned into a service upgrade and partial rewire. Though I was surprised with the amount of work required to bring the house up to code, Evan's obvious knowledge and straightforward approach to the work made me comfortable trusting Voltlab and Evan with the project. About 9 days of work was spread over a month from first visit to last inspection and all went smoothly. Evan coordinated scheduling with city officials and inspectors and kept me informed at all times. His crew of electricians did a great job and respected me, my home and property. They are a talented and very experienced team. Evan is rightfully proud of the company he is building. Highly recommended."
Panel change
Garage lighting update
Garage lighting update
Garage lighting update
Garage lighting update

+1

3 neighbors recently requested a quote
Avatar for Jagg Services
Jagg Services
5.0(
7
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Des Moines, WA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

Jagg Services proudly serves Western Washington for 24 years with top-quality HVAC, electrical, and general contracting services. Our expert team ensures your home or business stays comfortable, efficient, and safe. We specialize in heating and air conditioning systems, electrical installations, and reliable home generators.\n\n**Happily providing serving our Military and First Responder Community.\n\nPlease call us directly at (253) 455-2475\n\n

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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.

While natural gas generators are costly, they’re a great option for standby power due to the reliability of natural gas as a fuel source. Unlike other fuels, natural gas is delivered through underground pipes, making outages extremely rare and less likely to be affected by the elements. As long as the area isn’t prone to earthquakes, they offer an unlimited supply of natural gas that doesn’t degrade over time or require storage in tanks.

Yes, in most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home models. Because these installations involve significant alterations to your home's electrical system and produce exhaust fumes, local governments often require a permit or inspection for safety purposes. A generator permit typically costs between $50 and $250, depending on your location. Your electrician or certified installer can usually handle the permitting process for you, but you will be responsible for the cost. It's a good practice to confirm with your installer that they will pull all necessary permits before work begins.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

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.

The Des Moines, WA homeowners’ guide to generator installs

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