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Customers consistently praised the teams for their professionalism, courtesy, and attention to detail during installations.
Quality of Work
Many reviews highlighted the high quality of the windows and doors installed, as well as the craftsmanship of the installation teams.
Communication
While most feedback was positive regarding communication, a few customers noted issues with scheduling and follow-up.
Cleanliness
Several customers appreciated that the teams left their work areas clean and tidy after completing installations.
Customer Satisfaction
Overall, customers expressed high satisfaction with their experiences, often recommending Window World for future projects.
DB
Diane Brown
2 days ago
1.0
My desire to replace windows and screens that needed annual winter caulking and rolled up towels to decrease cold drafts overrode my caution in signing the contract with Window World of the Green Mountains for replacements.
The windows seem okay but it is hard to tell because of the poor installation in November 2025. I am in the middle of a 6-week waiting period for a decision-maker to assess multiple problems. In the meantime, not only am I back to the annual tasks of now winterizing NEW windows with caulk and rolled up towels, there is also the added task of mopping up windowsills because rain/snow water no longer drains properly.
(I checked the "Overpriced" description because this has cost over $11K for13 windows & screens and there are now have more problems than before).
I will update this comment when (and if) these issues are resolved by Window World within a reasonable amount of time.
CM
Christa Mordoff
Jan 2, 2026
5.0
Mike and Brandon (the Green Team) did an amazing job on the installation of three windows in my home. Very reasonable pricing, thoughtful work - I’ll be a future customer for sure.
MT
Molly Trayah
Jan 1, 2026
5.0
We had all windows and doors replaced in our home about a month ago by Window World and I cannot say enough great things about the brown team. The level of professionalism and quality work was top notch, and we are still in awe of the amount of work that was done in just 4.5 days. It was a cold and snowy week, so I was a bit nervous about having this job (which also included enlarging our master bedroom window) completed in December - but it ended up being the best decision. We noticed an immediate improvement in the heating efficiency in our home immediately!
We have a few follow-up things to deal with (stress fracture in one window and storm door install) and Sally has been excellent at communicating about the timing of these things. I would 100% recommend Window World to everyone who is thinking of replacing windows and doors. Also added bonus of everyone in the neighborhood commenting on how great things look!
DP
dawn parker
Dec 19, 2025
5.0
The Brown Team arrived at my house yesterday to replace a slider and garage window. Both were 52 years old! There was some wood rot under the old HEAVY slider and they did a great job replacing the rotted area with freshly cut wood. The Team worked well together and communicated well. I would highly recommend Window World and The Brown Team!
JF
Joseph Forgione
Dec 17, 2025
5.0
The Gold team; Steve Marcel, Scott, Chad were the best workers ever. They worked hard every day and they were very friendly and polite. They always went out of their way to answer any questions we may have had. These guys had a knack for attention to detail. These guys took a great amount of pride in their work. Steve always kept us informed of any updates for the project and was always considerate and respectful. On several occasions Logan and Nate would work with the Gold team. At the Window World office, Sally coordinated with us, the Gold team, and the suppliers to make sure everything ran smooth on the job site. As a result, our home looks absolutely stunning. We are very happy with the finished product. As a matter of fact, I've been recommending Window World to several of my neighbors who have stopped by to admire Window World's exemplary products and workmanship.
Frequently Asked Questions About Window World of the Green Mountains
What does "Any Size, Installed" mean?
The term "Any Size" refers to any size replacement Double-Hung window our manufacturer will construct. Currently this is a minimum width and height of 15" X 26" and a maximum of 48" X 78". "Installed" refers to the removal of a basic Double-Hung wooden window and installing your new Window World replacement window, using the existing wooden stops.
What types of Payment methods & Financing do you offer?
We offer a variety of payment methods and financing options (subject to approved credit) depending on promotional period. Please contact us for more information regarding available options.
Will the replacement windows be installed from the inside or outside?
The majority of our replacement windows are installed from the outside. In some situations it may be necessary to install from the inside. On the day of installation, your installation expert will assess your unique situation and explain the process that will best suit your home.
Do you install replacement windows year-round? If so, will I lose a lot of heat/cooling at the time of installation?
Window World installs replacement windows year-round. An average installation will take only one day. Our crews install one window at a time and are trained to do what they can to minimize heating/cooling loss. The energy savings from your new windows will recover any incremental energy costs incurred during their installation many times over during their lifetime.
How can I prepare my house for my replacement windows?
Please take down curtains, blinds, or any other window treatments. Security sensors should also be removed and turned off by your security company. Please provide our installation expert with a clear path to the window(s) being replaced by moving anything that may be in the way. It is also advisable to remove all wall decorations from the walls close to the windows as they may fall during removal or installation.
How long will it take to get my replacement windows? How much time should I allow for the installation?
Generally, replacement windows can be installed within 4-8 weeks from the date that the final measurements are taken. The type of window being installed and type being removed help determine the amount of time needed to complete the job. On average each window takes about 30 minutes. Trim work and cleanup will require additional time to complete. An average job will take a single day.
What type of warranty is available for my windows?
Window World replacement windows come with an all-inclusive limited lifetime warranty. Contact us for more details.
What happens to my old windows?
After installing your new replacement windows we remove all old windows from your property and dispose of them properly. If you wish to keep your old windows or storm windows, please notify the installation crew as soon as it arrives for your installation.
What do I do if there is a problem with the windows?
After installing your new replacement windows we remove all old windows from your property and dispose of them properly. If you wish to keep your old windows or storm windows, please notify the installation crew as soon as it arrives for your installation.
I'm overwhelmed by all the industry jargon. What do these words mean?
At Window World, it's our goal for each and every one of our customers to feel comfortable throughout their home improvement experience. We try to always explain any construction concepts in terms everyone will know when we're in the home, but we also like to make definitions available in advance. If there are any concepts you'd like to read up on as you research your options, feel free to download our Industry Terms document.
What does "Any Size, Installed" mean in your window replacement service?
"Any Size" refers to replacement Double-Hung windows from 15" X 26" up to 48" X 78". "Installed" means removing your existing basic Double-Hung wooden window and installing the new Window World window using existing wooden stops.
What payment methods and financing options are available?
We accept AMERICANEXPRESS, CASH, CHECK, DISCOVER, MASTERCARD, VISA, and offer financing options subject to approved credit. Contact us to learn about current promotions.
Will my replacement windows be installed from the inside or outside?
Most replacement windows are installed from the outside. In some cases, installation may be from the inside. The installation expert will explain the best approach on installation day.
Do you install replacement windows year-round and will I lose heat or cooling during installation?
Yes, windows are installed year-round. Installations take about one day per home, installing one window at a time to minimize heat or cooling loss. Energy savings from new windows far outweigh any temporary loss.
How can I prepare my house for window replacement installation?
Remove curtains, blinds, and window treatments; disable security sensors with your security company; clear the path to windows; and remove wall decorations near windows to prevent damage.
How long does it take to receive and install replacement windows?
Generally, windows are installed within 4-8 weeks after final measurements. Installation averages about 30 minutes per window, with typical jobs completed within a day including trim and cleanup.
What warranty do your replacement windows have?
Our replacement windows come with an all-inclusive limited lifetime warranty. Contact us for detailed warranty information.
What happens to my old windows after installation?
Old windows are removed from your property and properly disposed of. If you wish to keep them, notify the installation crew upon their arrival.
What nearby places can I visit before or after my window consultation at Window World of the Green Mountains?
Nearby you can enjoy dining at Half Pint Pizza or Halyard Brewing Co., get electric services from Cummings Electric, or visit Weird Window Brewing for some local brews, making your visit convenient and enjoyable.
Are there automotive services near Window World of the Green Mountains for any vehicle needs during my visit?
Yes, there are several nearby automotive service providers such as The Swedish Pit, Bag Riders, Vermont Custom Auto Service, Elite Auto & Truck Service & Sales, Maglaris Automotive Services, and Cam's Automotive for your automotive repairs and maintenance.
How can nearby home improvement service providers assist me alongside Window World's offerings?
Nearby businesses like Cummings Electric, Benoure Plumbing, Heating and Air Conditioning, Reliant Electric Works, E & M Mechanical Inc, and Bartlett Tree Experts offer electrical, plumbing, HVAC, and tree services that complement your home improvement projects.