Window Authority provides window and door installation services for Southern New Hampshire from its Londonderry location. The company emphasizes proper fit, weather sealing, and clean job completion.
Local Southern NH focus with a simple process and clear timelines. Careful measurements, neat removal of old units, and attention to finish details. Strong customer ratings and a track record of responsive communication.
Serving Manchester, Londonderry, and nearby Southern NH towns.
Residential window replacement and installation, including measuring, ordering, and fitting; removal of old units; exterior and interior trim work; basic door and patio door installation per website; guidance on window materials and styles.
Google reviews show a high average rating across several dozen comments, with homeowners noting courteous crews, clean installations, and windows that operate as expected.
Unfortunately broke a window and these guys came and saved the day! Absolute 5 star service. Great prices great service great people I will always choose Window Authority for my window needs.
Tim is extremely knowledgeable and personable, which made working with him a breeze. He communicated everything clearly with us, gave us pros and cons for the windows we were looking at, and even gave us tips for fixing our sliding door to avoid having to replace it. Would highly recommend!
We had 10 windows, picture window and sliding glass door replaced. The price was a very fair price out of four quotes. The product exceeded our expectations, and I love the new picture window and sliding door. Tim and Don were great to work with, Bobby and Anthony have great workmanship skills. Love my new windows!
My wife & I worked with Anthony, Bobby & Chris recently for some new windows at our home. We had an excellent experience with them from beginning to end. They were knowledgeable, had competitive pricing and their installation team was extremely professional. Made quick work of the installation and left the house as clean as before they came. Couldn't be happier with how it went. Will absolutely be using them for our next window projects!
Tim gave my husband and I a very fair quote to replace the storm door and the kitchen/side door of our house. I appreciate Tim working with us to get the custom kitchen door we want and to have the exact same Andersen storm door to match the one that is in the front of the house. Bobby and Anthony installed our doors. Anthony has quite a sense of humor! The pictures attached are the before and after pictures: left is the original ancient door and right is the new one with the decorative glass.
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