20 Best Window Companies in Seattle, WA (2025 Reviews)
Thinking of improving your house’s insulation? The best window replacement companies can help.
We analyzed all the top-rated window companies in Seattle and selected the best 20 based on:
Customer reviews
Window installation expertise
Popularity with home-owners like you
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Why you can trust EcoWatch
Although green energy sources like wind and solar are important when it comes to reducing your carbon footprint, improving your home’s energy efficiency can also have a big impact on home energy conservation. Potential leaks or drafts from your windows can make your AC or heater work extra hard in the summer or winter.
Fortunately, helping you save money with upgraded windows also helps our goals of reducing energy usage for the environment.
We’ve compiled a guide on the top installation companies to help you in your search, so you can not only benefit from brand-new windows, but also save money on your electricity bills.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Best Energy-Efficient Features
Champion
- Many years of experience
- Low prices relative to competitors
- Limetime warranty
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best Window Installation & Replacement Companies in Seattle
The EcoWatch Reviews team evaluated many installers in Seattle to find the best ones for our readers. The installers mentioned in this article scored best in our categories, including energy-efficient offerings, availability, price, customer service and more.

Window World
EnergyStar Partner
Large serice area
Low prices relative to competitors
Great industry reputation
Lifetime warranty
Quality of service will depend on your area
Window World offers windows expertise in Seattle. This company has 27 years of experience in the window installation industry, and it has proved to be one of the most reputable companies in the business. The company has plenty of positive reviews from customers online.
It is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.
Energy Efficiency of Window World WindowsWindow World is an Energy Star partner and offers a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make sure to mention that you want energy-efficient windows to your Window World representative when inquiring about services.
How much does Window World cost in Seattle?Window World does not mention prices on its website, but it's known for offering some of the most affordable window installations around. You can inquire about a free quote on its website for more information about pricing.

Milgard Windows & Doors
EnergyStar Partner
Wide network of installers
Lifetime warranty available
Entails hiring third-party contractors
Limited additional services
Milgard Windows & Doors offers the best local installation in Seattle. This company has 60 years of experience in the window installation industry, and it has proved to be one of the most reputable companies in the business. The company has plenty of positive reviews from customers online.
It offers competitive pricing, a comprehensive warranty and installers that all have a minimum of 15 years of window installation experience.
Energy Efficiency of Milgard Windows & Doors WindowsMilgard Windows & Doors is an Energy Star partner and offers a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make sure to mention that you want energy-efficient windows to your Milgard representative when inquiring about services.
How much does Milgard Windows & Doors cost in Seattle?Milgard does not mention prices on its website, but it offers different kinds of windows at varying price points. You can inquire about a free quote on its website for more information about pricing.

Renewal by Andersen
Great industry reputation
Award-winning company
Member of US Green Building Council
Manufactures products in-house
No lifetime warranty
More expensive than competition
Renewal by Andersen offers the best availability in Seattle. This company has 27 years of experience in the window installation industry, and it has proved to be one of the most reputable companies in the business. The company has plenty of positive reviews from customers online.
It uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen is an Energy Star partner and offers a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make sure to mention that you want energy-efficient windows to your Andersen representative when inquiring about services.
How much does Renewal by Andersen cost in Seattle?Andersen does not mention prices on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. You can inquire about a free quote on its website for more information about pricing.
We aim to be unbiased and transparent by listing pros and cons for every company. Additionally, any partnerships do not affect our rankings.
More Window Companies in Seattle
Renewal by Andersen of Western Washington
Renton, WAGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Vinyl Frames
Energy-Efficient Options
Glass Doors
Window Replacement/Installation
Double-Hung
Custom Window Designs
Bay Windows
Champion Replacement Windows of Seattle
Kent, WAFinancing and warranties available
Free assessment
Step-by-step guides available online
Full-service provider
Price Transparency
Good Customer Service
Services Offered
Bay Windows
Glass Doors
Window Replacement/Installation
Double-Hung
DaBella
Bremerton, WATransferable warranties
family_owned
Timely Service
Glasswing® and Fairfield® vinyl windows
Good Customer Service
Services Offered
Glass Doors
Vinyl Frames
Window Replacement/Installation
Double-Hung
West Seattle Window & Door LLC
Seattle, WAGood Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Einar Johanson Window & Door
Seattle, WALocally owned and operated
Good Customer Service
Price Transparency
Free assessment
Free in-home consultation
Timely Service
Online service requests
Services Offered
Custom Window Designs
Window Replacement/Installation
Orca Roofing & Exteriors
Bellevue, WAPrice Transparency
Free assessment
Offers environmental impact reports
Specialized debris management systems
Good Customer Service
Educational Website
Free in-home consultation
Services Offered
Window Replacement/Installation
Energy-Efficient Options
state glass llc
Kent, WAServices Offered
Window Replacement/Installation
Perdue Builders & Supply, Inc.
Bothell, WAFree assessment
Educational Website
Good Customer Service
Price Transparency
Services Offered
Window Replacement/Installation
Norwest Home Improvements LLC
Poulsbo, WAGood Customer Service
Educational Website
Free assessment
Price Transparency
Services Offered
Vinyl Frames
Window Replacement/Installation
Seattle Home Windows
Lynnwood, WAFree assessment
Good Customer Service
Educational Website
Services Offered
Window Repair
Vinyl Frames
Window Replacement/Installation
Wood Frames
Glass Doors
ACE Glass - Replacement & Installation
Mukilteo, WAFree assessment
Price Transparency
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Skylights
Glass Doors
Mirrors
Window Repair
True Windows and Doors
Snohomish, WAFree assessment
Price Transparency
Services Offered
Glass Doors
Tempered Glass
Window Replacement/Installation
Skylights
Custom Window Designs
Energy-Efficient Options
TN Glass Install LLC
Tacoma, WAGood Customer Service
Free assessment
Price Transparency
Services Offered
Glass Showers
Window Replacement/Installation
Glass Repair
Window Repair
Energy-Efficient Options
Glass Doors
ALL STAR WINDOWS Window and Door Sales and Installation
Olympia, WAFree assessment
Services Offered
Window Replacement/Installation
Eagle Creek Siding - Tumwater
Tumwater, WAFree assessment
Price Transparency
Educational Website
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Lake Washington Windows and Doors
Seattle, WAFree assessment
Educational Website
Good Customer Service
Price Transparency
Timely Service
Services Offered
Fiberglass Frames
Vinyl Frames
Double-Hung
Glass Doors
Window Replacement/Installation
Energy-Efficient Options
Bay Windows
Wood Frames
Windorco Supply Inc.
Seattle, WAFree in-home or virtual consultation
Family-owned and operated
Douglas-Fir Wood Windows
Good Customer Service
Price Transparency
Educational Website
Free assessment
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Metal Frames
Wood Frames
7Glass - Mirror, Shower Door, Window Repair and Replacement
Bellevue, WAPrice Transparency
Free assessment
Good Customer Service
Educational Website
Timely Service
Services Offered
Window Replacement/Installation
Mirrors
Window Repair
Glass Repair
Glass Showers
Sound View Window & Door, Inc
Seattle, WAFree assessment
Good Customer Service
Price Transparency
Educational Website
Services Offered
Energy-Efficient Options
Tempered Glass
Metal Frames
Window Replacement/Installation
Double-Hung
Fiberglass Frames
Vinyl Frames
Glass Doors
Skylights
Signature Window & Door Replacement
Kent, WAFree assessment
Good Customer Service
Price Transparency
Educational Website
Timely Service
Services Offered
Fiberglass Frames
Custom Window Designs
Glass Doors
Energy-Efficient Options
Window Replacement/Installation
Calculate how much you can expect to pay for window installation and replacement in Seattle, WA using our customized window cost calculator.
Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.
How Installing Energy-Efficient Windows in Seattle Saves You Money
Energy-efficient windows can provide benefits in more than one way. Here are some reasons you may want to consider making the switch:
- Decrease your carbon footprint: By using less energy once you switch to energy-efficient windows, you’ll also be lowering your carbon dioxide emissions by about 12%, according to Energy Star.
- Save money on electricity bills: Once you upgrade to energy-efficient windows, you can expect a reduction in your bills by about 12% because you’ll need less energy to heat or cool your house.
- Protect your investment: Keeping your windows up to date is an important part of maintaining your property and its real estate value, particularly if your home is on the older side.
- Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which not only insulate your home better, but also filter out harmful UV rays, preventing your furniture, carpet and other valuables from fading.
Estimated Cost of Window Replacement in Seattle
Let’s go over the cost of replacing your windows and the types of services you may need for your home.
How Much Do New Windows Cost?
Even though the national average cost to install one window is around $600, it can range from $200 to $1,200. How much it will cost varies based on several factors, like material, number of windows, size, type, the location of your home and more.
It’s also worth noting that energy-efficient windows will usually cost more initially, but Energy Star estimates that switching out the windows on your Seattle home can mean an average energy savings of $236 to $319 a year for single-pane window replacement, or between $87 to $126 per year for double-pane windows. How much you’ll save by upgrading to energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.
Something else that affects the total cost is the material you select for your frame. Aluminum frames are typically the least pricey and are sturdy and light, but they offer poor insulation. On the other hand, wood frames are the most expensive, as they are aesthetically pleasing and provide decent insulation. Fiberglass and vinyl frames provide good insulation and cost somewhere between the other two.
What Services do Window Installers Offer?
The first step when planning a window replacement is to figure out whether you need a full-frame or pocket installation.
A full-frame installation is a total window replacement. It involves removing the old window, the sill, and the exterior and interior trim. It also involves extra materials, such as insulation and drip edges, which increase the overall cost of the project. Also worth noting: you may have to touch up the paint around the window after a full-frame installation. A pocket installation means replacing a window without taking out the complete frame, which is generally cheaper than a full-frame installation.
If you’re unsure which kind of window installation service you should get, your installer can advise you. In general, the decision is influenced by factors such as the age and condition of the home, the type of building material, budget and time restrictions.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Best Energy-Efficient Features
Champion
- Many years of experience
- Low prices relative to competitors
- Limetime warranty
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
How We Choose the Best Window Installers in Seattle
In our search to make your home improvements easier and more eco-friendly in Seattle, EcoWatch landed on the above companies as the best window installation companies in the city. Along with energy efficiency, we evaluated each installer and assigned rankings using the following methodology:
Service Area
Since this is a guide for Seattle, we paid more attention to companies that provide services to the city. There are other reputable providers that didn’t make the cut because of the low odds that they would serve the average homeowner in Seattle.
Work Quality
We’re willing to bet that you’re not looking for a company to do a shoddy job installing windows. We’ve vetted each installer included on this list to ensure its contractors are well-qualified and that the company has received a lot of positive customer feedback to vouch for its service.
Customer Reviews
We analyzed trends in recent customer feedback to find the companies with the most consistent customer satisfaction, weighted by sample size. Customer satisfaction might be the factor we place the most value on, as it indicates the quality of services across nearly every category, including quality of installation, warranty, quality of parts, professionalism, cost and more.
Cost
This one is a give-and-take: as with other services, cheap window companies won’t always provide the highest quality service. Still, we want to make sure we’re highlighting companies that provide a variety of price and financing options so they’re accessible to most homeowners.
Warranty
As discussed previously, windows are a considerable investment, so you’ll want to make sure that investment is protected. Window installation companies that have lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Lastly, we like to see companies that have been in the industry for a while. Window installation companies that have more years of experience earn higher rankings by our standards. We like to see at least ten years of experience.
Seattle, WA Window Replacement FAQs
How much should window installation cost?
The national average cost to install one window is around $600 but can range from $200 to $1,200, depending on several factors. The price is typically influenced by the location of your property, the type and material of the window and the size of the window. Also, bear in mind that energy-efficient windows may cost more initially but can save you hundreds of dollars a year in energy bills.
What are the different types of windows?
There are various types of windows you can get for your home, such as picture windows, bay windows, double-hung and single-hung windows, casement windows, transom windows, slider windows and awning windows.
Can you replace your own windows?
If you’re handy and have experience with similar home improvement projects, it’s possible to install your own windows. However, if you don’t have the time or experience, we recommend getting a professional to do it for you.
When is the best time of year to replace windows?
Even though you can install windows any time of year, warmer weather is generally better for installing replacement windows. Additionally, the weather should be dry, because rain can make the installation harder.
Should I replace all my windows at the same time?
If you want to get more efficient windows and save money on energy costs, replacing all the windows together is the only way to gain that benefit. On the other hand, if you have only a few windows that are broken or leaky, you can replace just those.