Local Pittsburgh Window Installation Specialists You Can Trust
Celebrating Our 47th Anniversary

12 Consecutive Years in a row

1 of 4 in Western PA
1 of 3 in Western PA

About Window Installation Specialists

Look to Window Installation Specialists for experienced services for all your window replacement and custom installation services. Our company provides replacement windows and doors for residential and commercial clients throughout the area to enhance the safety and aesthetic of your space. Our new windows in Pittsburgh come in a wide variety of styles and prices to meet your specific needs. The owners, Bill and Melissa Kish have been operating this highly successful business for more than 47 years as well as being the proud recipient the last eleven consecutive years of the Super Service Award from Angie’s List.

Schedule a Free, On-Site Estimate

Do you need replacement windows, custom windows, or doors in the Greater Pittsburgh area? Call us now to schedule your free, on-site window replacement consultation. We carry a wide selection of top-notch replacement windows and doors from today’s leading windows manufacturers, in beautiful and functional styles – both classic and modern.

Let Our Certified Craftsmen Install Your Windows

Rest assured the well-made windows we provide you are installed by the best. Our company has our own team of full-time window installers. These professionals are highly skilled craftsmen who care about their work; they are carpenters who specialize in installing replacement windows.

Unlike most of our competition, we don’t outsource our new and replacement window and door referrals. Our specialists are full-time employees – not independent contractors. Our window installers are uniformed, professional craftsmen who are fully insured with general liability and auto insurance, as well as Workers’ Compensation. This is why we can ensure quality work and customer satisfaction with the personal attention and direct involvement of our owner on each of our windows replacement projects all year round. We are happy to install windows throughout every season, including winter.

Our Owner Oversees All Projects

Our owner, Bill Kish, has been installing replacement windows for more than 47 years – since 1973 – and he personally supervises every window and door project hands-on. When you work with us, you should expect to see him at your home or business.

Our Goal

Our goal is to be the best Pittsburgh window installation company. Period. This is because our work is made to last.

Guesstimates & Consultations

We understand your need to know how much it will cost to replace the windows in your home. Unfortunately, the answer is, “It depends.” There is no typical or average price for replacement windows because there are too many variables to consider – from the brand, glass, frame, and hardware choices to the layout of your home, including driveway and stairs.

Call us directly for a quick, free phone “guesstimate.” We have years of experience doing on-site window and door project estimates. Talk with us about your project so we can tell you if we’re within your budget range before scheduling an on-site estimate. Once you have a guesstimate, we can come to your home to give you a professional estimate.

Whether you are interested in vinyl windows in Pittsburgh or you need a door installation in Mt. Lebanon, PA, we have the skills and resources available to get the job done right. If you are interested in learning more about our services and products, or you would like a free quote, contact us today at (724) 446-0275.


Boost the beauty and value of your home with wood windows.

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Fiberglass / Composite

Choose fiberglass windows for strength and durability.

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Reduce your energy bills with the insulating quality of vinyl windows.

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Bay / Bow Windows

Add whimsy with multiple windows that extend outward from your house.

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Find windows that meet the needs of your commercial building project.

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Windows Replacement Services Since 1973

We provide windows replacement and custom windows installation services in Pittsburgh and southwestern PA.

We replace windows and doors in homes and businesses throughout the Pittsburgh region. Owners Bill and Melissa Kish have operated Window Installation Specialists of Pittsburgh for over 47 years, serving thousands of satisfied customers in the greater Pittsburgh region and southwestern Pennsylvania.

Schedule a FREE On-Site Windows Replacement Consultation

Do you need Replacement Windows, Custom Windows, or Doors in the Pittsburgh area? Call us now to schedule your FREE on-site windows replacement Consultation. We carry a wide selection of top quality replacement windows and doors from today’s leading windows manufacturers, in beautiful and functional classic and modern window styles.

13 Years in a Row!

KDKA Home Improvement Hour

Home Improvement Hour
with Rob Pratte on KDKA (1020AM).

Watch Our Commercial

Ask the Specialist

Bill Kish has been installing windows and doors for nearly 47 years, since April of 1973. If you have questions about your windows, your doors, or your window replacement project, please call Bill at (724) 446-0275, or send him your questions.