Window Installation · Seattle, WA/Updated June 13, 2026
The Best Window Installation Companies in Seattle, WA
Seattle's window installation market features a range of options from trusted leaders to promising newcomers. Know where your value lies.
MHMaya Hendricks · Home Services Editor Updated June 13, 2026 · Next review July 2026
Editorially independent5 companies evaluated
cover story
★ Editor's ChoiceWindorco Supply Inc.
96Score
Latest update · June 13, 2026: Initial ranking published. 5 Seattle-metro window installation businesses evaluated, top 5 ranked by Vetted Score.
In Seattle, quality window installation is essential for energy efficiency and enhancing your home's aesthetics. Whether you're replacing old frames or upgrading to energy-efficient models, the right company can make all the difference in your project's success.
We evaluated five local providers based on their customer ratings and review counts, focusing on those with the most substantial reputations. The result is a ranking that highlights both the most trusted names and the emerging players in the market.
5window installation companies evaluated in Seattle
4.86average rating across the field
2.5Kcustomer reviews analyzed
Cityvetted analysis of public Google review data, updated June 13, 2026.
How we evaluated all 5 window installation companies.
To create this ranking, we analyzed customer reviews and ratings from multiple sources, ensuring a fair assessment of each company's service quality. Our approach guarantees that no business pays for placement, and we refresh our data monthly to reflect any changes in performance.
We focused on both the number of reviews and the overall ratings to gauge customer satisfaction. This way, we can offer you a reliable guide to the best window installation companies in Seattle, highlighting those with proven track records.
The Vetted Score: six weighted factors
Customer sentiment25%
Rating quality20%
Review volume & velocity20%
Website trust signals15%
Service breadth10%
Business longevity10%
Sentiment is measured by AI analysis of review text, recency-weighted, with verified-pattern checks to discount suspicious review bursts.
With a perfect rating of 5 stars from 191 reviews, Windorco Supply Inc. is highly praised for its exceptional customer service and quality installations. Customers highlight their professionalism and attention to detail, making them ideal for those seeking reliable window solutions. However, their limited review count may raise questions about consistency.
Pros
Exceptional customer service
High-quality installations
Professional staff
Cons
Limited review base compared to larger competitors
Renewal by Andersen of Western Washington has garnered a strong rating of 4.8 stars from 1,812 reviews. Customers commend their energy-efficient windows and extensive product range, making them a go-to for homeowners looking to upgrade. The only downside is that their pricing tends to be on the higher end. A review base that deep is hard to game, and the score barely moves across it, which is the clearest consistency signal we track. Most of what reviewers hire it for is energy-efficient window upgrades. It serves Western Washington, with $300 to $800 per window pricing, and the honest trade-offs are higher pricing compared to competitors.
With a rating of 4.7 stars from 383 reviews, Window Nation is well-regarded for their custom window solutions and competitive pricing. Customers appreciate their knowledgeable staff and the variety of styles available. A potential drawback is their slightly longer installation timelines compared to some competitors. A review base that deep is hard to game, and the score barely moves across it, which is the clearest consistency signal we track. Most of what reviewers hire it for is custom window designs. It serves Seattle, WA, with $250 to $700 per window pricing, and the honest trade-offs are longer installation timelines.
West Seattle Window & Door LLC holds a perfect 5-star rating from 47 reviews, indicating strong customer satisfaction. Clients appreciate their personalized service and local expertise. However, the limited number of reviews may suggest they are still building their reputation in the area. The sample is modest but steady, with reviewers describing the same strengths instead of one-off praise. Most of what reviewers hire it for is personalized window service. It serves West Seattle, WA, with $200 to $500 per window pricing, and the honest trade-offs are limited review base.
Reglaze Windows & Installation has a solid rating of 4.8 stars from 21 reviews. Customers praise their quick response times and quality work, especially for repairs and retrofits. However, their low review count means they may not have the same level of experience as larger companies. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is window repairs and retrofits. It serves Seattle, WA, with $150 to $400 per window pricing, and the honest trade-offs are low review count and limited service offerings.
How to choose a window installation company in Seattle
Selecting the right window installation company involves balancing price, reputation, and services offered. Here are key factors to consider before making your decision.
Review Ratings
Look for companies with a solid review history. High ratings indicate consistent customer satisfaction, which is crucial for a successful installation.
Experience and Expertise
Consider how long the company has been in business. Experienced providers typically have a better understanding of local building codes and can offer valuable advice.
Cost Estimates
Get multiple quotes to compare prices. Ensure you understand what each estimate includes to avoid hidden costs down the line.
What it costs
What window installation costs in Seattle
Window installation prices can vary significantly based on the type of windows, materials used, and the complexity of the project. Here’s a breakdown of what you can expect to pay in Seattle.
Basic Vinyl Windows$200 to $400 per window, ideal for budget-conscious homeowners looking for functional replacements.
Mid-Range Wood Windows$400 to $800 per window, offering better aesthetics and energy efficiency for a moderate investment.
High-End Custom Windows$800 to $1,500 per window, providing premium materials and tailored designs for luxury homes.
Installation CostsLabor costs typically range from $100 to $300 per window, depending on the complexity of the installation and the contractor's rates.
Frequently asked questions
How much does window installation cost in Seattle?
Prices for window installation in Seattle typically range from $300 to $1,200 per window, depending on the type and materials used.
What should I look for in a window installation company?
Look for companies with high ratings, a solid number of reviews, and experience with the type of windows you want, as demonstrated by the top-ranked providers.
How often is this ranking updated?
We re-run the full analysis monthly with fresh review data. Last updated June 13, 2026.
Our verdict
For most Seattle homeowners: <strong>Windorco Supply Inc.</strong>
Your best overall choice is Windorco Supply Inc., with its perfect 5-star rating on 191 reviews. For the best value, Renewal by Andersen of Western Washington offers a strong 4.8 rating from 1,812 reviews, making it a solid pick for those looking for quality at a reasonable price. If you're ready to splurge, consider Window Nation, which has a 4.7 rating from 383 reviews, ideal for those wanting a premium experience.
Cityvetted
