Business Details
About
Double Pane Window InstallationWindow Installation Service
Window Authority is a trusted window and door replacement company based in Londonderry, NH, proudly serving Southern New Hampshire and Southern Maine. We specialize in high-quality, energy-efficient windows and doors designed to improve your home’s comfort, appearance, and value. As a local, family-owned business, we’re committed to honest pricing, expert installation, and exceptional customer service. Whether you’re replacing drafty windows or upgrading your doors, Window Authority delivers professional craftsmanship and lasting results that stand up to New England’s climate. Experience a smoother, more reliable home improvement process with Window Authority.
Location
Hours
Reviews
4.7
31 reviews
5 stars
29
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1 star
2
- GIGavin Irons2 days ago5.0Unfortunately 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.
- SPShawn PowerOct 5, 20255.0Tim 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!
- PMPaula MervaAug 30, 20255.0We could not be more satisfied with the entire process of replacing all our windows! Tim and his staff were so attentive and the lines of communication were always open! We look forward to working with window authority again in the future!
- BMBenjamin MahoneyJul 19, 20255.0I recently underwent window replacement and the owner Tim was very relatable, fun and respectful, the windows also turned out better than I could have ever imagined. These people know how to do windows right!!!
- DMDante MontyJun 2, 20255.0Great service, would 10/10 recommend to anybody. Excellent staff they are all nice and I had the please to meet Tim, he’s the best!
Frequently Asked Questions About Window Authority
Where is Window Authority located?
Window Authority is located at 15 Londonderry Road, Unit 10, Londonderry, NH 03038, USA.
What services does Window Authority provide?
Window Authority offers double pane window installation and window installation services.
What are the business hours for Window Authority?
Window Authority is open Monday through Friday from 8:00 AM to 5:00 PM, and closed on Saturdays and Sundays.
What payment methods does Window Authority accept?
Window Authority accepts American Express, Cash, Check, Discover, MasterCard, and Visa.
Which areas does Window Authority serve?
Window Authority serves multiple counties including Hillsborough, Merrimack, Belknap, Rockingham, Strafford, Cheshire in New Hampshire, and Cumberland and York Counties in Maine.
How can I learn more or contact Window Authority online?
You can visit their website at https://www.windowauthority.com to learn more or get in touch.
Are there any nearby places where I can grab a drink before or after visiting Window Authority?
Yes, From The Barrel Brewing Company and Moonlight Meadery are nearby places where you can enjoy a brewery or winery experience around the Londonderry area.
What are some nearby fitness options near Window Authority?
Near Window Authority, you can find fitness centers like KAPAP Krav Maga Londonderry, NH and Akiyama Martial Arts for martial arts training and workouts.
Where can I find other home improvement or contracting services close to Window Authority?
Crossroads Contracting and Grass Gobblers Lawn Care & Landscaping are nearby businesses offering construction, home improvement, and landscaping services.
Are there any nearby automotive-related services close to Window Authority?
Yes, you can find automotive repair and transmission services nearby, including AAMCO Transmissions, Express Auto Body & Customs, and U-Haul Neighborhood Dealer for truck rentals.