Skip to main content
  • Written by
    Max Peterson
  • Fact Checked
  • Updated

Replacement windows can protect your home from drafts and moisture problems, boost its energy efficiency, and provide it with some additional aesthetic appeal. A reputable window provider can help you make the most of your new windows, so you can make them work for you.

Top Pick
Renewal by Andersen logo
4.7/5

Ratings are based on our detailed proprietary methodology and review standards.

  • Full-service installation
  • Large window selection
  • Nearly 30 years of experience

Buy One Window, Get One 40% OFF

Best Financing
Champion logo
4.4/5

Ratings are based on our detailed proprietary methodology and review standards.

  • Full-service installation
  • In-house, U.S.-made products
  • More than 70 years of experience

Save 35% + $100 off per window!

Most Customizable
Power Home logo
4.3/5

Ratings are based on our detailed proprietary methodology and review standards.

  • Full-service remodeling
  • 96% satisfaction rate
  • More than 30 years of experience

Next-Day Appointments Available

10 Best Window Replacement Companies in Mercer Island

Brands are algorithmically curated from a database of local service providers near you. We require a minimum number of Google reviews and average ratings for provider inclusion.

We recommend these local window companies for your window replacement project in Mercer Island.

Mercer Island residents can trust the This Old House Reviews Team to provide relevant and up-to-date window replacement company recommendations in their area. To determine which installers are the best, we focus on these five criteria:

  • Energy-efficiency guarantees
  • Customer reviews and recommendations
  • Professional experience and licensure
  • Services and warranties
  • Product quality

Featured Partner
Renewal by Andersen of Western Washington Logo
Top Rated

Renewal by Andersen of Western Washington

5/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 1488 reviews


700 S Renton Village Pl Suite 600, Renton, WA 98057

(206) 777-0954

renewmywindows.com
Featured Partner
Champion Replacement Windows of Seattle Logo
Top Rated

Champion Replacement Windows of Seattle

4.9/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 527 reviews


19406 68th Ave S, Kent, WA 98032

(206) 455-9527

www.championwindow.com/Seattle
Featured Partner
DaBella Logo
Top Rated

DaBella

4.9/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 776 reviews


33530 1st Way S Suite 103, Federal Way, WA 98003

(253) 465-2353

dabella.us/location/kent

Lake Washington Windows and Doors

5/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 368 reviews


740 SW 34th St #201, Renton, WA 98057

(425) 272-9470

lakewashingtonwindows.com
Glass Doctor of Seattle Logo

Glass Doctor of Seattle

5/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 537 reviews


18840 72nd Ave S, Kent, WA 98032

(866) 640-7373

glassdoctor.com/seattle

Orca Roofing & Exteriors

4.7/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 35 reviews


16301 NE 8th St Suite 253, Bellevue, WA 98008

(425) 584-6722

www.orcaroofing.com
West Seattle Window & Door LLC Logo

West Seattle Window & Door LLC

4.7/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 24 reviews


1416 SW Roxbury St, Seattle, WA 98106

(206) 890-1910

westseattlewindows.com

state glass llc

4.7/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 27 reviews


19226 66th Ave S l103, Kent, WA 98032

(253) 394-6260

state-glass-llc.business.site

Seattle Glass and Window

4.7/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 20 reviews


6617 S 193rd Pl p107, Kent, WA 98032

(253) 325-5175

www.seattleglassandwindow.com

7Glass - Mirror, Shower Door, Window Repair and Replacement

4.6/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 85 reviews


2020 124th Ave NE #C 102, Bellevue, WA 98005

(206) 707-5082

www.7glass.us

Facts about Mercer Island

  • Annual Energy Efficient Windows Savings:
    $366
  • Average Max Temperature:
    54°F
  • Average Min Temperature:
    41°F
  • Average Daily Sunlight:
    50%
  • Average Annual Snowfall:
    4.2”
  • Average Monthly Precipitation:
    5.90”

How To Choose a Window Company in Mercer Island

It's essential to find a window replacement company that matches your specific values, needs, and preferences. Consider the following areas during your search:

Window Cost by Type

When you're shopping for new windows, it's important to remember that there's more to cost than just purchase price. You want a high-quality and durable window. Choosing economy windows could actually raise your overall cost, due to their shorter lifespan and more intensive maintenance needs. The style, material, and size of your replacement windows play the largest role in determining your final cost. Simple double-hung windows deliver great value with their straightforward style and simple mechanisms, while a sweeping, custom-size picture window will cost more. It's wise to speak with a trusted window installer to determine your most suitable options.

This table shows average prices for various window types to give you an idea of what to expect.

Window TypesAverage Cost
Arched$243-$1,493
Awning$352-$981
Bay$811-$6,018
Custom$361-$1,003
Casement$281-$1,627
Double-hung$131-$847
Egress$241-$601
Glass Block$48-$609
Picture$211-$1,560
Single-hung$95-$1,605
Skylight$120-$1,449
Sliding$276-$1,404
Storm$57-$397
Transom$294-$615

Window Material Cost

Materials also help determine a window's cost. You might select a material based on the local climate, your energy efficiency goals, and your desired look. For example, wood windows can give your home an organic design without breaking the bank, but you'll have to invest more toward maintenance. Aluminum and composite windows cost more up-front, but they're incredibly durable against the elements, so you'll spend far less on maintenance.

Window TypesAverage Cost
Aluminum$57-$1,605
Composite$579-$1,302
Fiberglass$95-$811
Vinyl$195-$1,805
Wood$290-$1,627

Other Window Replacement Costs

Your total cost for window replacement will also include applicable warranty fees, permit-related costs (if required), and labor. Ensure that you discuss each of these factors with an estimator before committing to a window company.

Experience and Training

The longer a window company has been operating, the better its workmanship will likely be. Contact a company representative to learn more about its public and private credentials, experience, and guarantees. Company websites often have photo galleries where you can see previous work technicians have done.

Licensing and Credentials

The Washington state government requires every contractor and subcontractor to register with the state Department of Labor and Industries, no matter their income or specialty. A window installer should carry at least one of these license classifications:

  • Millwork
  • Glass and glazing
  • Handyman
  • Window coverings
Window installers must also carry a minimum bond and liability insurance coverage.

Types of Windows Offered

No two window contractors offer the same window types and materials. Find one that focuses on the type you want for your home.

Equally important to your desired windows' shape is their framing. Ask your window provider if it offers the frame material you want, such as fiberglass, aluminum, wood, composite, or vinyl.

Customer Feedback

Reading other customers' stories is a surefire way to screen window companies in your area. Trustworthy sources for customer reviews include Google, the BBB, and Yelp Speak with people you know who have used the company you're evaluating, and ask a representative for professional references.

Frequently Asked Questions about Window Replacement in Mercer Island

More Window Resources

National Windows Company Ranking Methodology

Sources

Energy Star

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

Explore Useful Articles On Window Replacement

How To Soundproof a Window (Expert Reviewed)

How To Soundproof a Window (Expert Reviewed)

Jessica Wimmer-May 1, 2024

How To Replace a Window Screen (2024 Guide)

How To Replace a Window Screen (2024 Guide)

Jessica Wimmer-May 1, 2024

Full-Frame vs. Insert Window Replacement (2024 Guide)

Full-Frame vs. Insert Window Replacement (2024 Guide)

Jessica Wimmer-May 14, 2024

How To Replace Glass in a Window (2024 Guide)

How To Replace Glass in a Window (2024 Guide)

Jessica Wimmer-April 17, 2024

Wood vs. Vinyl Windows: What’s the Difference?

Wood vs. Vinyl Windows: What’s the Difference?

Jessica Wimmer-April 5, 2024

Related Cost Guides

How Much Do Energy-Efficient Windows Cost? (2024 Guide)

How Much Do Energy-Efficient Windows Cost? (2024 Guide)

Jessica Wimmer-May 15, 2024

How Much Do Triple-Pane Windows Cost? (2024)

How Much Do Triple-Pane Windows Cost? (2024)

Jessica Wimmer-May 31, 2024

Window Screen Replacement Cost (2024 Guide) | Expert Reviewed

Window Screen Replacement Cost (2024 Guide) | Expert Reviewed

Jessica Wimmer-May 15, 2024

How Much Does a Bay Window Cost?

How Much Does a Bay Window Cost?

Jessica Wimmer-April 17, 2024

How Much Do Double-Pane Windows Cost? (2024 Guide)

How Much Do Double-Pane Windows Cost? (2024 Guide)

Jessica Wimmer-May 24, 2024

How Much Does Window Replacement Cost? (2024 Pricing)

How Much Does Window Replacement Cost? (2024 Pricing)

Jessica Wimmer-May 30, 2024