J. C. Tonnotti

Home Improvement Contractors in Connecticut

Home improvements are an ideal investment for homeowners. It’s a way to increase your home’s value as well as improve your home’s energy efficiency and quality of living.

J. C. Tonnotti, JCT, offers a variety of home improvement services ranging from installing siding, replacement windows, doors, to painting, and power washing, remodeling, and much more!

JCT Quality Craftsmanship

J.C. Tonnotti is a family owned and operated home improvement company that has helped home owners across the state of Connecticut transform their homes.  Our customers all agree that working with J.C. Tonnotti is a positive experience and they are grateful for the level of quality craftsmanship and excellent customer service – you can see and hear their testimonials here.

Whether it’s installing energy efficient replacement windows, replacing siding, revitalizing a home through painting and power washing, or refreshing an entryway with a new door system, we pride ourselves in putting our best efforts for each and every project.

Let us help you turn your home improvement dreams into a reality. Contact us today at 860-621-1642!


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$100 Off Any Home Improvement Project

Whether you are thinking about installing a new entry door system, replacing windows, installing siding, repainting your home, or undergoing a historic restoration, J.C. Tonnotti is always here to help.

$100 Off Any Project


“In the fall of 2008, we decided to replace our 30-year-old windows, entry doors, and sliding glass patio doors in our house. After interviewing nine different contractors, we selected J. C. Tonnotti Window Company to do the job. We based our decision on quality of product, competitive price, and outstanding ...

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Patricia & George C. from Manchester, CT
“In the summer of 2008, we had two large windows replaced by J.C. Tonnotti Windows. At that time, we were very pleased with the quality of the windows and with the installation, and we knew then that we would have more new windows installed by this reputable company.In April of ...

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Maryellen and Kevin, Forestville CT
“Just yesterday I had all my windows in my condo replaced by J.C. Tonnotti. They were the least expensive and most professional company I could have chosen. They had the job completed in less time than they quoted as well. If you need windows replaced at a great price with ...

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Ethan Gombossy

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Harvey Building Products and replacement windows installedAsk about our line of Harvey® vinyl replacement windows, their expert designs, and premium grade materials.

Harvey® is recommended to withstand the cold weather conditions of Connecticut winters and provide energy savings all year round. Read more about Harvey Windows.