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TRUSTED BY VASHON, WA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon15
    Verified generator installs reviews

Top-Rated Generator install pros in Vashon - Updated Nov 2026

Avatar for Voltify llc
Voltify llc
5.0(
5
)
Fixed Generator - InstallPortable Generator - Install

Serving Vashon, WA and surrounding areas

Approved

In business since 2021

Emergency services offered

Small jobs welcome

"Casey’s a great guy, he definitely got the job done right! Everything looks great, works like should & looks way better than before. His customer service is a 10/10, he’s very knowledgeable & went above and beyond when it came to explaining things solar wise. He made it very easy to understand what we’d need to have done & how he’d go about things. Very happy with my experience overall & will be glad to be a return customer!"
Wiring Installation
22 neighbors recently requested a quote
Avatar for Cummings, Inc.
Cummings, Inc.
4.3(
282
)
Fixed Generator - Install

Serving Vashon, WA and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"They listen to what I want it done and didn't add any extras to what they were supposed to do. Did exactly as I wanted and needed. I would recommend this company far above all the other companies that install generators"
Coleman Furnace
Heat Pump Replacement
Heat Pump Install
Change out a Coleman Furnace
Boiler system

+1

Response time9 hrs
Response rate97%
232 neighbors recently requested a quote
Avatar for Rock Electric
Rock Electric
4.2(
13
)
Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair

Serving Vashon, WA and surrounding areas

Approved (Corporate)

In business since 2009

Free estimates

Small jobs welcome

Rock Electric LLC, is a family-owned and operated company based in Seattle, Washington that services the entire Puget Sound area. We provide electrical services for our customers with their best interests and safety in mind. We specialize in Residential Remodels, Outdoor Living Spaces, Hot tub and Generator, Panel Replacements, Electric Car Charging Station Installation and more.\n\nYour electrical system is the heart of your house; you can feel safe in knowing that our technicians are working for you and your family to ensure you're not left in the dark. Here at Rock Electric, customer safety and satisfaction are our top priorities. Our electricians strive to show up on time, maintain a tidy job site, perform high-quality work, and are prepared to walk you through the entire process, from beginning to end. We are trustworthy electricians, dedicated to excellence and customer care.

Entertainment System & Bromic Heaters
Entertainment System & Bromic Heaters
Entertainment System & Bromic Heaters
Entertainment System & Bromic Heaters
Entertainment System & Bromic Heaters

+47

Response time12 hrs
Response rate99%
268 neighbors recently requested a quote
Avatar for Northwest Expert Heating, LLC
Northwest Expert Heating, LLC
4.2(
41
)
Fixed Generator - Install

Serving Vashon, WA and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"They came out the next day to do the estimate. They had an opening the following day and we were so pleased with the installation team. A+ rating"
COLEMAN 14 SEER Air Conditioner
Outdoor Unit
TRANE XV 80
In the Process of Installing Ac
9k indoor unit

+22

Response time11 hrs
153 neighbors recently requested a quote
Recommended by50%of homeowners
Avatar for Mercurio's Heating & Air Conditioning
Mercurio's Heating & Air Conditioning
4.3(
12
)
Generator - Install - For Business

Serving Vashon, WA and surrounding areas

Approved (Corporate)

In business since 1992

Credit card accepted

Customers say: Quick response

"Very responsive and professional on our first visit .Technician Charles Monday gets a five star review based on his thoroughness and professionalism .We have two old AC units that are not functioning well as they were installed when we moved to the house 21 years ago .Mr Monday came on time and spent hours in the attic taking care of a leak and cleaning the furnace and filters and motor ,and we are grateful .He explained each step and consulted with me and took photos to document the problems encountered .Whereas we are contemplating replacement due to the age ,we feel we got our problem taken care of until the nest step which is a replacement of our units .I was impressed with his knowledge base and how he took so much time in making sure the AC was in running condition when he left ."
Gas Furnace Replacement
Gas Furnace Replacement
Ductless Heat Pump
Heat Pump Installation
Furnace Replacement

+2

Response time7 hrs
12 neighbors recently requested a quote
Recommended by90%of homeowners
True Knight Electric LLC
New to Angi
Fixed Generator - InstallFixed Generator - Repair

Serving Vashon, WA and surrounding areas

Approved

Free estimates

Credit card accepted

True Knight Electric LLC is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you! \n

Avatar for Washington Generators
Washington Generators
4.5(
10
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Vashon, WA and surrounding areas

In business since 2010

Free estimates

Credit card accepted

"I installed a generator and transfer switch in my home, but ran into trouble during startup and called Washington Generators for assistance. Kurt came out and diagnosed the situation as part warranty, part installation error. My compliments to Kurt for his efforts to work with Generac in getting replacement parts as part of the switch warranty. However the replacement parts took a couple of weeks for Generac to deliver, coupled with holidays meant that I was without backup power for over a month. During this time I was trying to schedule a follow up appointment with Eric Johnson through an email chain. This review would be an A instead of a B if Eric had been forthcoming and identified himself as the owner, which he is per state records, instead of being cagey and saying he was the supervisor for generator service."
Gas piping and electrical conduit
Gas piping and electrical conduit
Generac Automatic Transfer Switch
Gas piping and Electrical conduit
Completed Generator installation

+31

Recommended by90%of homeowners
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Generator Install FAQs, answered by experts

Generators are usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

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.

Potential benefits of using a natural gas generator include reducing your carbon footprint, lower likelihood of carbon monoxide exposure, budget-friendly operating costs, and low-maintenance, continuous fuel supply. Some possible drawbacks, though, include higher initial installation costs, dependency on a natural gas supply, and installation complexity. Keep in mind that pros and cons will vary based on the type and brand of natural gas generator. 

Natural gas and electricity rates vary significantly based on location, and pricing can change over time, too. It’s possible that in locations where natural gas is particularly inexpensive, it will cost less than grid-based electricity will. However, you should also factor in the generator’s initial costs and maintenance needs, as well as its noise level and if it can comfortably power all your home appliances.

Energy output depends on turbine size, average wind speed at your site, and system efficiency. A 5 kW turbine in a good wind location can generate 8,000 to 12,000 kilowatt-hours per year, which may cover a large portion of an average home’s needs. Accurate output estimates require a professional wind assessment and a review of your household’s energy usage patterns.

The Vashon, WA homeowners’ guide to generator installs

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