Brand Certified
Window Authority
4.8(33 reviews)
Certified by Window Authority • Apr 26, 2026
Business Details
15 Londonderry Road, Londonderry, NH
03038, United States
Certified by Window Authority • Apr 26, 2026
(603) 420-7729
Certified by Window Authority • Apr 26, 2026
https://www.windowauthority.com
Certified by Window Authority • Apr 26, 2026
About
Certified by Window Authority • Apr 26, 2026
Double Pane Window InstallationWindow Installation Service
Enhance your home with Window Authority, the premier choice for window and door replacement in Londonderry, NH. Serving Southern New Hampshire and Southern Maine, we specialize in high-quality, energy-efficient products designed to boost your home’s comfort and curb appeal.
As a local, family-owned business, we pride ourselves on integrity and craftsmanship. Our team is committed to providing honest pricing, expert installation, and service that treats you like family. Whether you are replacing drafty windows or upgrading your entry doors, we deliver durable results built to withstand the New England climate. Trust the experts at Window Authority for a seamless, professional experience and lasting value.
Location
Certified by Window Authority • Apr 26, 2026
Hours
Certified by Window Authority • Apr 26, 2026
Monday8:00 AM - 5:00 AM
Tuesday8:00 AM - 5:00 AM
Wednesday8:00 AM - 5:00 AM
Thursday8:00 AM - 5:00 AM
Friday8:00 AM - 5:00 AM
SaturdayClosed
SundayClosed
Reviews
4.8
33 reviews
5 stars
31
4 stars0
3 stars0
2 stars0
1 star
2
- LGLaureen GreebApr 24, 20265.0I usually do not give reviews however I felt I needed to regarding this company. The employees are exemplary and very, very knowledgeable. Bobby and Anthony were the installers of my windows and were meticulous both in the installation as well as cleanup of the area. Both gentlemen were again very knowledgeable on how they proceeded. There was a very minor issue but all I needed to do was contact Tim and I immediately received a callback from Chris and this young man responded immediately and came out next day and resolved issue.I must mention the gentleman named Don who initially came out for quote. Very professional. The people that I have mentioned were all very courteous and personable. I will be recommending this company very highly. I thank you gentlemen.
- DLDavid LearyMar 18, 20265.0We replace all of our 30 year old Plaistow NH homes windows (18) using the Window Authority in Londonderry NH. Their prices were quite reasonable compared to others. The wait was not very long (about 4 weeks). They worked fast and removed and installed all of the windows in a day. All of the caulking and trim work was completed on the second day. There was some concern about drafts by the local inspector and the company promptly addressed the issue. The entire job went very well and as such I would highly recommend Window Authority in Londonderry if you are considering any window work in you future
- GIGavin IronsNov 22, 20255.0Unfortunately 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.
- EBEvelyn BocchinoDec 4, 20245.0Window Authority installed 9 large, custom windows. It was the best experience I ever had with a contractor. From estimate to final measure to production to installation everything was on time. The team was courteous, friendly, skilled and professional. The windows are beautiful. I highly recommend!
- KHKay HussonJul 19, 20245.0Excellent presentation of this product and a very pleasant individual!
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.
Brand Certified Facts from Window Authority
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Certified April 26, 2026Yext Knowledge Graph
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