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Top Connecticut and Massachusetts Window Contractors

Invest in high-performance new windows that bring beauty and value to your home for years to come!

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Update your home windows and save with flexible financing and energy savings!

4.9 out of 5

Out of 312 Reviews

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Our Services

Windows in Connecticut & Massachusetts

Name: Millstream Construction
Price range: $$
Rating: 5

Our Connecticut and Massachusetts window replacement company provides outstanding products and installation services.

Window Replacement

When it’s time for new windows, we make it possible to invest in high-performance products that provide the beauty, ventilation, and lighting you need.

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Window Types & Styles

Select from a range of window options to suit every room in your house, including double-hung windows, bow windows, casement windows, and more.

ProVia Windows

Not all windows deliver the same level of performance. ProVia Windows are crafted for superior energy efficiency, durability, and timeless style, making them a trusted choice for your home.

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Limited Time Offers

Pay Nothing Upfront—0% for 12 Months!

Get started today with Millstream Construction—no interest, no application fee for 12 months!

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25 Years of Trusted Craftsmanship

Millstream Construction backs every project with a 25-year workmanship warranty.

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GAF Warranties for Lasting Roof Protection

Secure your home with trusted GAF warranties from Millstream Construction.

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Why Choose Us

Reputable Connecticut and Massachusetts Window Installers

Quality products and precise installations are essential when investing in new windows. When you team up with us at Millstream Construction, you can expect nothing less! Because of our dedication, we are BBB-accredited and A+ rated, as well as a multi-time winner of the Angi “Super Service Award.”

Durable Construction

Our windows are made with quality frames and hardware resistant to wind damage, impacts, and more. The result is long-lasting, and window maintenance is a breeze!

Professional Installation

Your project is carried out by a skilled window replacement contractor, ensuring your window installation is completed in a timely, clean, and professional manner.

Energy-Saving Benefits

Seal out drafts, keep your home interior more comfortable, and reduce your energy costs with our carefully installed energy-efficient windows.

Attractive Pricing

Although we only work with top window manufacturers, we provide competitive pricing and a variety of easy financing options.

Our Gallery

Browse Our Project Gallery

See examples of our best work for yourself by visiting our online project gallery today!

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Service Areas

Trusted Replacement Window Installer for Connecticut & Massachusetts

Windows are a great investment when you have the right team for the job. At Millstream Construction, our team proudly brings more than 50 years of combined experience serving homeowners across Connecticut and Massachusetts to every job. We also hope to assist you, starting with a free quote. Review our service areas list today to find solutions near you!

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