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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 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%
228 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%
300 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
159 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
20 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for BLUE DIAMOND ELECTRIC LLC
BLUE DIAMOND ELECTRIC LLC
5.0(
1
)
Fixed Generator - Install

Serving Vashon, WA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

Thank you for visiting BLUE DIAMOND ELECTRIC LLC. We are your locally owned and operated electrical specialist based in Puyallup, WA. We service residential clients throughout Pierce County and the surrounding areas. Contact us now for your free estimate--we look forward to working with you soon!

New Construction
Panel Upgrade
Meter/Panel Upgrades
Meter Upgrade
Meter upgrade

+11

Response time2 days
1 neighbors recently requested a quote
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

"Excellent. Both installers, gas and electric, were superb. Prompt, arrived as promised, very professional, friendly, and thorough. Started at 7:30am and completed by 4pm. Set up cement pad, installed gas piping, new transfer box, etc..... showed how it’s works."
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

You may need a permit for a portable generator if you’ll be installing a transfer switch for your primary residence or similar work. Otherwise, a permit for other uses may not be necessary. Check your local building codes or ask a local generator installer for more information about your local regulations.

A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the total wattage of the devices that you’d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

The amount of time a standby generator can run continuously is around 3,000 hours on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.

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.

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.