Local Pittsburgh Window Installation Specialists You Can Trust

Wood

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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Vinyl

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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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 50+ 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.

15 Years in a Row!

00:00

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 50+ 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.

Cheryl W

Google review

Great professional installation and service . Melissa was very helpful explaining the different options for our patio doors . This gave us the opportunity to pick what was right for us . Bill and his crew did a... read more

Great professional installation and service . Melissa was very helpful explaining the different options for our patio doors . This gave us the opportunity to pick what was right for us . Bill and his crew did a superb job with the removal of our existing patio doors and replacing with neat - tidy - expert service . They installed the doors with much attention to detail . Highly recommend this company . We had our windows installed by thema few years back and only trusted the. With all 3 of our patio doors .

Olaf George

Google review

I hired them to install a new window in my house. The technician was professional and arrived on time as promised. The installation process was flawless. The window looks great plus reasonable price too.

Anitra Dawkins

Google review

Outstanding! I highly recommend them. Here’s why... I am completely satisfied with Window Installation Specialists! The quality of workmanship, professionalism, and customer service were all outstanding. I compared... read more

Outstanding! I highly recommend them. Here’s why... I am completely satisfied with Window Installation Specialists! The quality of workmanship, professionalism, and customer service were all outstanding. I compared prices with the Melissa Showroom and distributor and Window Installation Specialists offered identical Melissa windows at a significant discount and with same lifetime guarantee. A++

Kara Terell

Angie's list Review

Melissa and Bill were easy to work with and had fair pricing and none of a crazy sales tactics that I have run into with other window companies. I interviewed about 10 companies prior to selecting them and they clearly... read more

Melissa and Bill were easy to work with and had fair pricing and none of a crazy sales tactics that I have run into with other window companies. I interviewed about 10 companies prior to selecting them and they clearly stood out as the best chance for me to get quality windows with a quality installation at a reasonable price. This turned out to be true. Their installers did a beautiful job installing the new windows and the associated wood work and framing with a clear attention to detail and quality. Their installers are clearly craftsman with pride in their workmanship. They exceeded my expectations which is not easy to do as I’m an extremely picky person. My wife and I are very pleased.

Chris

Google review

Great window company. I’ve had a slider door several years ago installed and window replacement recently. No complaints and they did quality work. I worked along side them to replace the exterior trim around each... read more

Great window company. I’ve had a slider door several years ago installed and window replacement recently. No complaints and they did quality work. I worked along side them to replace the exterior trim around each window. They were very helpful and professional throughout the entire job. I will need some more windows replaced in the future. They will be my first call.

Chris McCartney

Google review

Melissa and Bill just completed part 3 of our replacement window project. They have now replaced all of the windows in our house and we couldn't be happier. We would recommend them to anyone looking to have... read more

Melissa and Bill just completed part 3 of our replacement window project. They have now replaced all of the windows in our house and we couldn't be happier. We would recommend them to anyone looking to have replacement windows done. Thanks again!

Nadine Lagerfeld

Google review

Just hired these guys to re-install my door. The technician was nice and professional. The installation has done quick and painless.

Donna Booth

Google review

We have corner windows in our house that needed a total replacement. After getting quotes from a few companies, we decided on Window Installation Specialist. We were impressed with Melissa as she helped us with the... read more

We have corner windows in our house that needed a total replacement. After getting quotes from a few companies, we decided on Window Installation Specialist. We were impressed with Melissa as she helped us with the perfect choice windows. We went with Pella. Bill came out to do a final measure and review the job. He noticed that our lintels needed some attention and explained how we could prepare them. During the installation process the crew made sure that everything was just perfect. The interior trim was installed with perfection. We choose to do the staining ourselves. We could not be any happier with our new windows. We have been praising Window Installation Specialist to our friends.

Cheryl W

Google review

Great professional installation and service . Melissa was very helpful explaining the different options for our patio doors . This gave us the opportunity to pick what was right for us . Bill and his crew did a... read more

Great professional installation and service . Melissa was very helpful explaining the different options for our patio doors . This gave us the opportunity to pick what was right for us . Bill and his crew did a superb job with the removal of our existing patio doors and replacing with neat - tidy - expert service . They installed the doors with much attention to detail . Highly recommend this company . We had our windows installed by thema few years back and only trusted the. With all 3 of our patio doors .

Olaf George

Google review

I hired them to install a new window in my house. The technician was professional and arrived on time as promised. The installation process was flawless. The window looks great plus reasonable price too.

Anitra Dawkins

Google review

Outstanding! I highly recommend them. Here’s why... I am completely satisfied with Window Installation Specialists! The quality of workmanship, professionalism, and customer service were all outstanding. I compared... read more

Outstanding! I highly recommend them. Here’s why... I am completely satisfied with Window Installation Specialists! The quality of workmanship, professionalism, and customer service were all outstanding. I compared prices with the Melissa Showroom and distributor and Window Installation Specialists offered identical Melissa windows at a significant discount and with same lifetime guarantee. A++

Kara Terell

Angie's list Review

Melissa and Bill were easy to work with and had fair pricing and none of a crazy sales tactics that I have run into with other window companies. I interviewed about 10 companies prior to selecting them and they clearly... read more

Melissa and Bill were easy to work with and had fair pricing and none of a crazy sales tactics that I have run into with other window companies. I interviewed about 10 companies prior to selecting them and they clearly stood out as the best chance for me to get quality windows with a quality installation at a reasonable price. This turned out to be true. Their installers did a beautiful job installing the new windows and the associated wood work and framing with a clear attention to detail and quality. Their installers are clearly craftsman with pride in their workmanship. They exceeded my expectations which is not easy to do as I’m an extremely picky person. My wife and I are very pleased.

Chris

Google review

Great window company. I’ve had a slider door several years ago installed and window replacement recently. No complaints and they did quality work. I worked along side them to replace the exterior trim around each... read more

Great window company. I’ve had a slider door several years ago installed and window replacement recently. No complaints and they did quality work. I worked along side them to replace the exterior trim around each window. They were very helpful and professional throughout the entire job. I will need some more windows replaced in the future. They will be my first call.

Chris McCartney

Google review

Melissa and Bill just completed part 3 of our replacement window project. They have now replaced all of the windows in our house and we couldn't be happier. We would recommend them to anyone looking to have... read more

Melissa and Bill just completed part 3 of our replacement window project. They have now replaced all of the windows in our house and we couldn't be happier. We would recommend them to anyone looking to have replacement windows done. Thanks again!

Nadine Lagerfeld

Google review

Just hired these guys to re-install my door. The technician was nice and professional. The installation has done quick and painless.

Donna Booth

Google review

We have corner windows in our house that needed a total replacement. After getting quotes from a few companies, we decided on Window Installation Specialist. We were impressed with Melissa as she helped us with the... read more

We have corner windows in our house that needed a total replacement. After getting quotes from a few companies, we decided on Window Installation Specialist. We were impressed with Melissa as she helped us with the perfect choice windows. We went with Pella. Bill came out to do a final measure and review the job. He noticed that our lintels needed some attention and explained how we could prepare them. During the installation process the crew made sure that everything was just perfect. The interior trim was installed with perfection. We choose to do the staining ourselves. We could not be any happier with our new windows. We have been praising Window Installation Specialist to our friends.