Window and Door Installation
Offering Professional And Expert Installation Services
Window and Door Installation Services
Windows & Doors By Brownell has offered turn-key window and door installation services since 1991 and is a trusted name in the industry. Our employee-owned company has been built on customer service. Let us guide you through the process of finding the right window for your unique home and project.
The Brownell Difference
Our window and door installation team is composed of Windows & Doors By Brownell employees who are full-time, year-round, and fully insured. Each member has extensive window installation and construction experience. Our teams can handle a range of projects, from the replacement of a single bay window to a +50 double-hung window project. Not only do our teams excel at what they do, but they are also courteous and treat your space with care.
Where We Install
We currently offer window and door installation services to these areas:
- Vermont: Chittenden County, Washington County, Lamoille County, with the addition of parts of Addison County, Orange County, and Windsor County
- New Hampshire: Parts of Grafton County, Sullivan County, and Merrimack County
- New York: Parts of Essex and Clinton counties of New York
Warranty Information
You probably won’t need it, but just in case something needs adjusting down the road, we’ll take care of it with a five-year workmanship warranty with Windows & Doors By Brownell. Also, your product comes with its own set of manufacturer warranties. Click here to learn more about product warranty.
Home Improvement Sales Event
Qualifying projects save $500 off the installation of every door and $150 off the installation of every window, with up to $5,000 in savings! *

Installation to be scheduled between January – March 2027.
Promotion requirements:
Winter Work Suitability:
Each window replacement project’s winter suitability is determined by Windows & Doors By Brownell.
Flexible Scheduling:
Unpredictable January/March weather calls for scheduling flexibility for your installation.
Safety and Property Protection:
Windows & Doors By Brownell prioritizes employee safety and the best interests of your property by selecting appropriate work days for your unique project.
Seasonal Considerations:
Substantial completion excludes weather-sensitive items (i.e., exterior painting, etc.), which will be scheduled during warmer months at Windows & Doors By Brownell’s discretion.
Exclusions and Terms:
Offer not applicable to previous quotes, financing, or other promotions. Retail sales excluded. Discount based on opening. Project deposit must be placed by 8.07.26 to qualify.
* Restrictions apply. Projects must qualify to be acceptable winter weather projects. Discount based on opening. Project deposit must be placed by August 7, 2026 to qualify.
To see if your project qualifies for this promotion, please 1.) Schedule a free consultation appointment, 2.) Contact your Windows & Doors By Brownell installed representative or 3.) Call our location for our Installation Department.
Your Local Leading Expert
For over 35 years, Windows & Doors By Brownell has been a leading local expert for Marvin windows and doors. From idea to installation and even years after – we’re here with you every step of the way.
About Our 100% Employee-Owned Company
Meet the Team
Say hello to our installation consultant team! You will be seeing one of these friendly faces at your consultation appointment.

Installation Technicians
Full-Time and Year-Round Employees!
Williston & West Lebanon
Our Team Is Proudly Certified
“I love my new windows, and the installers seem to have done an impeccable job. I’m so happy, thank you! Will definitely use you guys again as I continue to replace these windows!”
Jenny, Homeowner
Lyme, NH
Schedule an In-Home Installation Consultation
Provide the information below and we will be in touch about your consultation appointment. Please note that we only schedule consultations in select areas of Vermont, the Upper Valley of New Hampshire, and select areas in Essex and Clinton counties of New York.














