30 Best Window Replacement Companies in Londonderry, NH (Feb 2023)
Window Companies Near Me

Thinking of improving your house's insulation? The top window replacement companies can help.

We analyzed all the top window installers in Londonderry and selected the top 30 based on:

  • Customer reviews
  • Window replacement expertise
  • Popularity with home-owners like you
EcoWatch Local Advisors

By EcoWatch Local Advisors

Updated January 12, 2023

Why you can trust EcoWatch

Our panel of energy experts work tirelessly to create unbiased reviews and informative content to help homeowners make educated decisions. No other windows site has covered energy efficiency and sustainability as long as EcoWatch, which means we're going to help you find windows replacements that will save on your energy bill and put more money back in your wallet.

A review of the top window installation companies in Londonderry may not seem like the most captivating article on EcoWatch, but trust us, windows have more of an impact on your life than you might realize. Outdated windows can cost you in electric bills. As a matter of fact, the Department of Energy estimates that about 30% of your house's heat or cool air could be lost through your windows.

That's also bad news for the environment, as the additional energy used by old windows increases your carbon footprint.

Efficient windows are of particular importance in Londonderry, where winters are long and cold. According to Energy Star, switching to energy-efficient windows can save the average homeowner up to $408 each year.

Best Affordability

Window World

★★★★★
4.5

  • Large serice area
  • Great industry reputation
  • EnergyStar Partner
  • Quality of service will depend on your area

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Member of US Green Building Council
  • Manufactures products in-house
  • Great industry reputation
  • More expensive than competition

Best Warranty

Universal Windows Direct

★★★★★
4

  • Manufactures products in-house
  • Makes charitable contributions
  • Lifetime warranty
  • Some installations carried out by third-party contractors

Best Window Replacement Companies in Londonderry

The EcoWatch team evaluated many window companies in Londonderry to find the best ones for our readers. The providers in this article passed our review standards for energy-efficient offerings as well as customer service, local expertise, price and beyond.

Window World logo
FAST QUOTE
as little as 30 seconds
Best Affordability

Window World

★★★★★
BBB Rating: A+
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Large serice area
  • Pros icon Great industry reputation
  • Pros icon EnergyStar Partner
Cons:
  • Pros icon Quality of service will depend on your area

Window World offers windows expertise in Londonderry. Window World has over 27 years of experience in the industry, and it currently serves 200 locations nationwide. Hundreds of positive reviews on customer review websites back the company's reputation.

It is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.

Energy Efficiency of Window World Windows

Window World is an Energy Star partner with a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company's windows are Energy Star certified, so be sure to ask your Window World representative when inquiring about services.

How much does Window World cost in Londonderry?

Window World does not outline prices on its website, but it's known for offering some of the most affordable window installations around. The best way to get more accurate pricing information is to receive a free quote from the company.

Renewal by Andersen logo
FAST QUOTE
as little as 30 seconds
Best Overall

Renewal by Andersen

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Member of US Green Building Council
  • Pros icon Manufactures products in-house
  • Pros icon Great industry reputation
Cons:
  • Pros icon More expensive than competition

Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the window installation industry.

Andersen may be the company for you if you want one that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.

Energy Efficiency of Renewal by Andersen Windows

There are a wide variety of window types available from Renewal by Andersen, some of which are Energy Star products. A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019.

How much does Renewal by Andersen cost in Londonderry?

Pricing information is not available on Andersen's website since the cost of window installment varies greatly based on how many and what type(s) of windows you need. However, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. Requesting a free quote on its website is the best way to get more accurate information.

Universal Windows Direct logo
FAST QUOTE
as little as 30 seconds
Best Warranty

Universal Windows Direct

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 2002
Pros:
  • Pros icon Manufactures products in-house
  • Pros icon Makes charitable contributions
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Some installations carried out by third-party contractors

Universal Windows Direct has the best warranty in Londonderry. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has been in the window installation industry for around 20 years. Hundreds of positive reviews from customers online back the provider's reputation.

If you're looking for a company that has an industry-leading warranty covering products, parts and workmanship for life, Universal may be the right company for you.

Energy Efficiency of Universal Windows Direct Windows

The company offers energy-efficient UniShield brand windows. According to its website, UniShield window packages have higher gas fill rates and longer gas retention than most other brands on the market, and they are Energy Star products. Not all of Universal's windows are Energy Star certified, so make sure you mention that you want Energy Star windows when inquiring.

How much does Universal Windows Direct cost in Londonderry?

Prices aren't displayed on Universal's website, but installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. For more accurate information on pricing, you can inquire about a quote from the company.

Aeroseal Windows logo
FAST QUOTE
as little as 30 seconds
Best for Businesses

Aeroseal Windows

★★★★★
BBB Rating: A+
Locations: Regional
Founded: 1999
Pros:
  • Pros icon Many years of experience
  • Pros icon Great industry reputation
  • Pros icon Low number of customer complaints
  • Pros icon Manufactures products in-house
  • Pros icon Custom Designs
Cons:
  • Pros icon No lifetime warranty
  • Pros icon Not ideal for residential installations

Aeroseal Windows provides the best window installation for businesses in Londonderry. This company has 23 years of experience in the windows business, and it has become one of the most respected companies in Londonderry. The company has a lot of positive reviews from customers on online review websites.

If you're looking for a company that installs windows and doors at businesses across the Eastern U.S, Aeroseal may be the right provider for you.

Energy Efficiency of Aeroseal Windows Windows

Aeroseal Windows' commitment to sustainability can be seen in its energy-efficient window offerings. The company claims it helps businesses save on energy expenses and reduce their carbon footprints with energy-efficient windows, as well as practices like Low-E glass coating, weatherstripping and more.

How much does Aeroseal Windows cost in Londonderry?

Aeroseal doesn't have any pricing information displayed on its website, but it provides high-quality windows at a competitive price point. For more accurate information on the cost, you can get a quote from the company.

We've recommended installers with good reputations, but bear in mind that some national companies have independently owned locations in Londonderry, so the quality of service may differ depending on your local crew. We have tried to be unbiased and transparent by including pros and cons for every company reviewed.

More Window Replacement Companies in Londonderry

Coastal Windows & Exteriors

Beverly, MA
4.8
★★★★★
  • Pros icon Timely Service
  • Pros icon Award-Winning
  • Pros icon No-Hassle Pricing
  • Pros icon Free Quotes

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Double-Hung
  • Service icon Stained Glass
  • Service icon Sliding Glass

Website: https://mycoastalwindows.com/
Address: 236 Cabot St, Beverly, MA 01915
Phone: (978) 861-3019

Merrimack Valley Glass & Mirror

Newburyport, MA
4.3
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Excellent Customer Service
  • Pros icon Timely Service
  • Pros icon Free Quotes

Services Offered

  • Service icon Double-Hung
  • Service icon Full-Service Installations
  • Service icon Custom Windows
  • Service icon Stained Glass
  • Service icon Residential Windows
  • Service icon Business Windows
  • Service icon Sliding Glass
  • Service icon Aluminum Window Frames
  • Service icon Glass Showers

Website: https://www.merrimackvalleyglass.com/
Address: 5 Perry Way #7, Newburyport, MA 01950
Phone: (978) 463-9990

NEWPRO

Woburn, MA
4.1
★★★★★
  • Pros icon Award-Winning
  • Pros icon Good Customer Service
  • Pros icon No-fee Quotes
  • Pros icon Timely Service

Services Offered

  • Service icon Glass Showers
  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.newpro.com/contact-us/woburn/
Address: 26 Cedar St, Woburn, MA 01801
Phone: (781) 933-4100

Nashua Glass

Nashua, NH
4.1
★★★★★
  • Pros icon Good Customer Service
  • Pros icon No-Hassle Pricing
  • Pros icon Helps Educate Customers
  • Pros icon Locally Recognized for Quality

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Tempered Glass
  • Service icon Doors
  • Service icon Custom Window Designs
  • Service icon Business Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://www.nashuaglass.com/
Address: 110 Chestnut St, Nashua, NH 03060
Phone: (603) 882-0648

Northern Glass LLC

Ipswich, MA
4.1
★★★★★
  • Pros icon Price Transparency
  • Pros icon Dependable Service
  • Pros icon Timely Service
  • Pros icon Free Quotes

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Tempered Glass
  • Service icon Doors
  • Service icon Custom Windows
  • Service icon Full-Service Installations
  • Service icon Business Windows
  • Service icon Sliding Glass

Website: https://northern-glass.com/
Address: 29 Hayward St, Ipswich, MA 01938
Phone: (978) 356-7942

The Window Source NH

Seabrook, NH
4.0
★★★★★
  • Pros icon Helps Educate Customers
  • Pros icon No-Hassle Pricing
  • Pros icon Dependable Service
  • Pros icon Locally Recognized for Quality

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://www.windowsourcenh.com/
Address: 779 Lafayette Rd Suite 1, Seabrook, NH 03874
Phone: (888) 282-2912

Window World of Boston

Woburn, MA
3.9
★★★★★
  • Pros icon Free Quotes
  • Pros icon Reliable Service
  • Pros icon No-Hassle Pricing
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung

Website: https://www.windowworldofboston.com/
Address: 15 A Cummings Park Dr, Woburn, MA 01801
Phone: (781) 202-6460

Timberlane Glass and Mirror

Plaistow, NH
3.7
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Reliable Service
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Full-Service Installations
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Sliding Glass
  • Service icon Commercial Windows

Website: http://www.timberlaneglass.com/
Address: 108 Main St, Plaistow, NH 03865
Phone: (603) 382-6969

Southers Construction

Dover, NH
3.7
★★★★★
  • Pros icon Award-Winning
  • Pros icon Helps Educate Customers
  • Pros icon Reliable Service
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Double-Hung
  • Service icon Full-Service Installations
  • Service icon Custom Window Designs

Website: http://southersconstruction.com/
Address: 12 Crosby Rd, Dover, NH 03820
Phone: (603) 605-8037

Weaver Glass LLC

Beverly, MA
3.6
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Excellent Customer Service
  • Pros icon Helps Educate Customers
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Doors
  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.weaverglassllc.com/
Address: 393 Rantoul St, Beverly, MA 01915
Phone: (978) 922-5511

Rite Window

Woburn, MA
3.6
★★★★★
  • Pros icon Consistent Workmanship
  • Pros icon Free Quotes
  • Pros icon Helps Educate Customers
  • Pros icon Locally Recognized for Quality

Services Offered

  • Service icon Custom Window Designs
  • Service icon Glass Showers
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung

Website: https://ritewindow.com/
Address: 7 Roessler Rd, Woburn, MA 01801
Phone: (781) 491-0419

Pro Entry Installs LLC

Salem, NH
3.6
★★★★★
  • Pros icon Excellent Customer Service
  • Pros icon No-Hassle Pricing
  • Pros icon Arrives on Time
  • Pros icon Award-Winning

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Double-Hung
  • Service icon Bay & Bow Windows

Website: https://proentry.com/
Address: 7 Cassidy Ave #2863, Salem, NH 03079
Phone: (603) 765-1312

Window World of New Hampshire

Manchester, NH
3.6
★★★★★
  • Pros icon Reliable Service
  • Pros icon Educational Website
  • Pros icon No-Hassle Pricing
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Window Designs
  • Service icon Architectural Glass
  • Service icon Sliding Glass
  • Service icon Double-Hung

Website: https://www.windowworldnewhampshire.com/
Address: 735 E Industrial Park Dr Unit A, Manchester, NH 03109
Phone: (603) 935-9878

A&A Services Home Improvement

Salem, MA
3.6
★★★★★
  • Pros icon Reliable Appointment Windows
  • Pros icon Excellent Customer Service
  • Pros icon Price Transparency
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Custom Windows
  • Service icon Fast Delivery
  • Service icon Architectural Glass
  • Service icon Double-Hung

Website: https://www.a-aservices.com/
Address: 115 North St, Salem, MA 01970
Phone: (978) 354-7579

Arlmont Glass & Mirror

Medford, MA
3.4
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Reliable Service
  • Pros icon Helps Educate Customers
  • Pros icon Price Transparency

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Double-Hung

Website: http://www.arlmontglass.com/
Address: 427 High St, Medford, MA 02155
Phone: (781) 391-2044

Melrose Glass Co

Melrose, MA
3.4
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Free Quotes
  • Pros icon Helps Educate Customers
  • Pros icon Award-Winning

Services Offered

  • Service icon Residential Windows
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Business Windows
  • Service icon Double-Hung

Website: http://www.melroseglass.com/
Address: 169 Main St, Melrose, MA 02176
Phone: (781) 662-8599

Guaranteed Aluminum & Vinyl Inc

Lowell, MA
3.3
★★★★★
  • Pros icon Price Transparency
  • Pros icon No-fee Quotes
  • Pros icon Dependable Service
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Business Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://lowell-window-replacement-glass-repair.com/
Address: 349 Bridge St, Lowell, MA 01850
Phone: (978) 452-2392

Demers Plate Glass Co

Haverhill, MA
3.3
★★★★★
  • Pros icon Helps Educate Customers
  • Pros icon Excellent Customer Service
  • Pros icon No-Hassle Pricing
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Doors
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Business Windows

Website: https://www.demersplateglass.com/
Address: 373 River St, Haverhill, MA 01832
Phone: (978) 374-6387

Pella Windows & Doors of Woburn

Woburn, MA
3.3
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Locally Recognized for Quality
  • Pros icon Helps Educate Customers
  • Pros icon Charitable Giving

Services Offered

  • Service icon Custom Window Designs
  • Service icon Sliding Glass
  • Service icon Double-Hung

Website: https://www.pellabranch.com/boston/showrooms/woburn/
Address: 59 Commerce Way, Woburn, MA 01801
Phone: (781) 935-4947

Clear Choice Home Improvements

Manchester, NH
3.3
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Excellent Customer Service
  • Pros icon Award-Winning
  • Pros icon Free Quotes

Services Offered

  • Service icon Custom Window Designs
  • Service icon Sliding Glass
  • Service icon Double-Hung

Website: http://www.clearchoicehomeimprovement.com/
Address: 8025 S Willow St #107, Manchester, NH 03103
Phone: (603) 232-0237

Advanced Glass & Mirror

Westminster, MA
3.3
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Free Quotes
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Glass Showers
  • Service icon Custom Window Designs
  • Service icon Business Windows
  • Service icon Sliding Glass

Website: http://www.advancedglassmirror.com/
Address: 158 State Rd E, Westminster, MA 01473
Phone: (978) 874-1865

Central Glass Co

Westminster, MA
3.3
★★★★★
  • Pros icon Free Quotes
  • Pros icon Excellent Customer Service
  • Pros icon Price Transparency
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Glass Showers
  • Service icon Custom Windows
  • Service icon Commercial Windows
  • Service icon Sliding Glass

Website: http://www.advancedglassmirror.com/
Address: 158 State Rd E, Westminster, MA 01473
Phone: (978) 537-3962

Red Dog's Roofing LLC

Fitchburg, MA
3.3
★★★★★
  • Pros icon Educational Website
  • Pros icon No-Hassle Pricing
  • Pros icon Excellent Customer Service
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Commercial Windows

Website: https://www.reddogsroofing.com/
Address: 216 Daniels St #1, Fitchburg, MA 01420
Phone: (978) 625-9150

Milford Windows & Siding

Milford, NH
3.3
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Reliable Service
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Commercial Windows

Website: https://123siding.com/
Address: 69 Woodhawk Dr, Milford, NH 03055
Phone: (603) 213-1157

Queen City Glass & Mirror

Manchester, NH
3.2
★★★★★
  • Pros icon Price Transparency
  • Pros icon Excellent Customer Service
  • Pros icon Dependable Service

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Full-Service Installations
  • Service icon Business Windows
  • Service icon Sliding Glass

Website: http://qcglass.com/
Address: 295 Elm St, Manchester, NH 03101
Phone: (603) 666-0302

Pane Free Glass

Manchester, NH
3.2
★★★★★
  • Pros icon Free Quotes
  • Pros icon Excellent Customer Service
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Custom Window Designs
  • Service icon Full-Service Installations
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://panefreeglass.com/
Address: 270 Amory St #17, Manchester, NH 03102
Phone: (603) 497-1830

Blind Gallery New England

Stratham, NH
3.2
★★★★★
  • Pros icon Dependable Service
  • Pros icon Excellent Customer Service
  • Pros icon No-fee Quotes
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Energy-Efficient Options
  • Service icon Sliding Glass

Website: http://www.blindgallerynewengland.com/
Address: 72 Portsmouth Ave, Stratham, NH 03885
Phone: (978) 857-1617

Alton Bay Blinds of New England

Hampton, NH
3.2
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Award-Winning

Services Offered

  • Service icon Custom Windows
  • Service icon Sliding Glass
  • Service icon Commercial Windows
  • Service icon Double-Hung

Website: https://www.abblinds.com/
Address: 387 Lafayette Rd, Hampton, NH 03842
Phone: (603) 965-2114

Concord Lumber & Building Center

Littleton, MA
3.2
★★★★★
  • Pros icon Excellent Customer Service
  • Pros icon Consistent Workmanship
  • Pros icon Educational Website
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Custom Window Designs
  • Service icon Fast Delivery
  • Service icon Residential Windows
  • Service icon Commercial Windows

Website: https://www.concordbdc.com/
Address: 55 White St, Littleton, MA 01460
Phone: (978) 486-9877

Atlantic Window Warehouse

Newburyport, MA
3.2
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Timely Service
  • Pros icon Good Customer Service
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Sliding Glass
  • Service icon Double-Hung

Website: https://www.atlwindow.com/
Address: 155 State St, Newburyport, MA 01950
Phone: (978) 465-9696

How Installing Energy-Efficient Windows in Londonderry Saves You Money

When you upgrade to energy-efficient windows, you may see several perks, such as:

  • Protect your valuables: The low-emissivity coatings on many energy-efficient windows help reduce damage from the sun's UV rays to your floors, carpets and furniture.
  • Protect your investment: If your home is on the older side, your windows are most likely in need of replacement. Updating your windows can improve the insulation in your home and also help increase the value of your property if you decide to sell.
  • Save on energy bills: Because energy-efficient windows decrease the amount of energy needed to heat or cool your home, the switch can help you save about $408 annually on your energy bills in Londonderry.
  • Decrease your carbon footprint: You can reduce your carbon footprint by about 12% when you install Energy Star certified windows. In Londonderry, that's about 152 pounds per year on average.

Estimated Cost of Window Replacement in Londonderry

Windows come in all shapes and sizes, so costs and services will differ greatly. Here are the average costs and services that you can find from the average window installation company.

How Much Do New Windows Cost?

Though the typical of installing a single window is about $600, it can range from $200 to $1,200. But costs will vary significantly depending on the quality of your products, your location, the current condition of your home and the number of windows you need. Many window companies also offer door installations and other add-ons like baths, coating, shutters and more. These extra services will increase overall project costs.

Whether or not you opt for energy-efficient windows is another factor that will affect the cost. These will almost always cost more than other windows, but on the other hand, you can save about $408 a year on your energy bills in Londonderry.

Another factor that influences the overall cost is the material you pick for your frame. Aluminum frames are usually the least pricey and are sturdy and relatively maintenance-free, but they provide poor insulation. On the other hand, wood frames cost the most, as they are aesthetically pleasing and provide decent insulation. Fiberglass and vinyl frames provide good insulation and cost somewhere between the other two.

What Services do Window Installers Offer?

The first step of an installation is to think about whether you should get a full-frame or pocket installation.

A full-frame installation replaces the total window, including the sill, frame, trim and the window panes. Because this kind of installation requires more time, it will cost more than a pocket installation. Pocket installations are simpler and won't carry as large a bill, as they involve simply replacing the window within its existing frame. But if the frame has any damage or deterioration, you may have to get a full-frame installation instead.

Your window installation company can help you decide which type of installation you need.

Best Affordability

Window World

★★★★★
4.5

  • Large serice area
  • Great industry reputation
  • EnergyStar Partner
  • Quality of service will depend on your area

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Member of US Green Building Council
  • Manufactures products in-house
  • Great industry reputation
  • More expensive than competition

Best Warranty

Universal Windows Direct

★★★★★
4

  • Manufactures products in-house
  • Makes charitable contributions
  • Lifetime warranty
  • Some installations carried out by third-party contractors

How We Choose the Best Window Installers in Londonderry

In our hunt to find the most reliable, eco-friendly window installers in Londonderry, the EcoWatch Reviews team chose the above companies as the best window installation companies in the city. Along with energy efficiency, we reviewed each installer and assigned rankings based on the following methodology:

Service Area

Because this is a guide for Londonderry, we gave more points to companies that provide services to the city. There are other reputable providers that didn't make our list because of the low odds that they would serve the average homeowner in Londonderry.

Work Quality

When picking new windows, the quality and range of services can often play just as important of a role in insulation and performance as the type of window you opt for. We do rate window installers higher if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.

Customer Reviews

Customer feedback is another super important review factor. If most customers don't have good things to say about their experience with a certain company, it won't be featured on EcoWatch.

Cost

This one is a give-and-take: as with other services, cheap window companies may not provide the most quality service. Still, we want to ensure we're highlighting companies that provide a variety of price and financing options so they're accessible to most homeowners.

Warranty

As discussed, windows are a serious investment, so you'll want to make sure that investment is protected. Window installation companies that have lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

Lastly, we like to see companies that have been in the industry for a while. Window installers that have more years of experience will earn higher rankings by our standards. We like to see at least ten years of experience.

Londonderry, NH Window Replacement FAQs

What is the typical cost to install new windows?

The national average cost of installing one window is about $600 but can range between $200 and $1,200, based on several factors. The price is typically dependent on the size of the window, the type and material of the window and the location of your property. Also, keep in mind that energy-efficient windows may cost more upfront but can save you a decent amount of money a year in energy bills.

What are the types of windows?

The most common kinds of windows for homes are slider windows, picture windows, transom windows, casement windows, bay windows, double-hung and single-hung windows and awning windows.

When should I use a window installation company?

You should use a window installation professional whenever you want new windows. Installing windows is a complex process that can take a lot of time, so it's best left to the professionals.

When is the best time of year to replace windows?

Replacement windows can be installed at any time, but autumn might be the best season. Regardless of when you install them, the contractors will take steps to make sure that too much hot or cold air doesn't get into your home, so the temperature outside doesn't necessarily matter that much. What's more important than the temperature is that the weather should be dry.

Should I replace my windows all at once?

If you're upgrading your windows to save on your energy bills, replacing all of the windows at the same time is the only way to see a noticeable difference. On the other hand, if you have just one or two windows that are damaged or drafty, you can replace just those.

Follow us