30 Best Window Replacement Companies in Nashua, NH (Jan 2023)
Window Companies Near Me

When you need to upgrade your windows, our guide to the best window installation companies can help you find the provider for you.

We analyzed all the top window installers in Nashua 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.

The EcoWatch team is all about helping Nashua homeowners make their homes more eco-friendly. Traditional, outdated windows can cost you in energy bills. In fact, the Department of Energy estimates that 25-30% of your house's heat or cool air could be lost through your windows.

Luckily, helping you save energy with upgraded windows also aligns with our goals of conserving energy and the resources it takes to generate it.

So if you're building a new home, renovating or changing out old windows in Nashua, this is the best place to get started.

Best Affordability

Window World

★★★★★
4.5

  • Large serice area
  • Lifetime warranty
  • EnergyStar Partner
  • Quality of service will depend on your area

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Award-winning company
  • Great industry reputation
  • Manufactures products in-house
  • No lifetime warranty

Best Warranty

Universal Windows Direct

★★★★★
4

  • Wide variety of products and services
  • Manufactures products in-house
  • Makes charitable contributions
  • Some installations carried out by third-party contractors

Best Window Replacement Companies in Nashua

The EcoWatch team examined dozens of providers that service the Nashua area to find the top window installation companies that fit our standards. The companies in this article passed our review standards for energy-efficient offerings as well as local expertise, customer service, 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 Lifetime warranty
  • Pros icon EnergyStar Partner
Cons:
  • Pros icon Quality of service will depend on your area

Window World offers windows expertise in Nashua. Window World has been in the window installation industry for about 27 years. The company has plenty of positive reviews from customers online.

If you're looking for a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital, this may be the provider for you.

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 make sure to mention that you want energy-efficient windows to your Window World representative when inquiring about services.

How much does Window World cost in Nashua?

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

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 Award-winning company
  • Pros icon Great industry reputation
  • Pros icon Manufactures products in-house
Cons:
  • Pros icon No lifetime warranty

Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has been in the window business for around 27 years.

Andersen may be the company for you if you're interested in 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 Nashua?

Andersen does not detail prices on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. The best way to get more accurate pricing information is to ask for a free quote from the company.

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 Wide variety of products and services
  • Pros icon Manufactures products in-house
  • Pros icon Makes charitable contributions
Cons:
  • Pros icon Some installations carried out by third-party contractors

Universal Windows Direct provides the best warranty in Nashua. Universal has been in the window installation business for about 20 years. Its reputation is backed by hundreds of positive reviews on customer review websites.

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

Energy Efficiency of Universal Windows Direct Windows

Universal Windows Direct has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you ask for high-quality Energy Star windows when inquiring. 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.

How much does Universal Windows Direct cost in Nashua?

Even though pricing information is not readily available on Universal's website, 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 the cost, you can request 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 offers the best window installation for businesses in Nashua. This company has been in business since 1999 and currently serves 13 states and Washington D.C. The company has plenty of positive reviews from customers online.

Aeroseal may be the company for you if you want one that installs windows and doors at businesses across the Eastern U.S.

Energy Efficiency of Aeroseal Windows Windows

Aeroseal Windows offers some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for Energy Star windows when inquiring. 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 Nashua?

Though prices are not readily available on Aeroseal's website, it provides high-quality windows at a competitive price point. If you'd like more accurate information, you can inquire about a quote on the company's website.

One thing to note is that the companies in this section are national, which means the quality of the service may vary depending on your local team. We have tried to be unbiased and transparent by mentioning both pros and cons for every provider.

More Window Replacement Companies in Nashua

Coastal Windows & Exteriors

Beverly, MA
4.8
★★★★★
  • Pros icon Reliable Appointment Windows
  • Pros icon Award-Winning
  • Pros icon Helps Educate Customers
  • Pros icon Consistent Workmanship

Services Offered

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

Renewal by Andersen of Boston

Northborough, MA
4.6
★★★★★
  • Pros icon Dependable Service
  • Pros icon Locally Recognized for Quality
  • Pros icon Helps Educate Customers
  • Pros icon Free Quotes

Services Offered

  • Service icon Fast Delivery
  • Service icon Custom Windows
  • Service icon Business Windows
  • Service icon Double-Hung
  • Service icon Stained Glass
  • Service icon Sliding Glass
  • Service icon Bay Windows

Website: https://www.renewalbyandersen.com/window-company/096-boston-ma/about-us
Address: 30 Forbes Rd, Northborough, MA 01532
Phone: (508) 351-2236

Merrimack Valley Glass & Mirror

Newburyport, MA
4.3
★★★★★
  • Pros icon Price Transparency
  • Pros icon Helps Educate Customers
  • Pros icon Excellent Customer Service
  • Pros icon Reliable Appointment Windows

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 Commercial 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 Excellent Customer Service
  • Pros icon Dependable Service
  • Pros icon Free Quotes
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Glass Showers
  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • 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 Award-Winning
  • Pros icon Price Transparency
  • Pros icon No-fee Quotes
  • Pros icon Educational Website

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Tempered Glass
  • Service icon Doors
  • Service icon Custom Window Designs
  • Service icon Commercial 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 Reliable Appointment Windows
  • Pros icon No-fee Quotes
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Tempered Glass
  • Service icon Doors
  • Service icon Custom Window Designs
  • Service icon Full-Service Installations
  • Service icon Commercial 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 No-Hassle Pricing
  • Pros icon Helps Educate Customers
  • Pros icon Consistent Workmanship
  • Pros icon No-fee Quotes

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 Excellent Customer Service
  • Pros icon No-Hassle Pricing
  • Pros icon Award-Winning
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Sliding Glass
  • Service icon Custom Windows
  • 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

UBrothers Construction

Framingham, MA
3.9
★★★★★
  • Pros icon Award-Winning
  • Pros icon Educational Website
  • Pros icon No-fee Quotes
  • Pros icon No-Hassle Pricing

Services Offered

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

Website: https://ubrothersconstruction.com/
Address: 6 Temple St, Framingham, MA 01702
Phone: (800) 984-2667

Timberlane Glass and Mirror

Plaistow, NH
3.7
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Helps Educate Customers
  • Pros icon No-Hassle Pricing
  • Pros icon Consistent Workmanship

Services Offered

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

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

Pella Windows & Doors of Boylston

Boylston, MA
3.7
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free Quotes
  • Pros icon Price Transparency
  • Pros icon Helps Educate Customers

Services Offered

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

Website: https://www.pellabranch.com/western-massachusetts/showrooms/boylston/
Address: 280 Shrewsbury St, Boylston, MA 01505
Phone: (508) 842-1112

Weaver Glass LLC

Beverly, MA
3.6
★★★★★
  • Pros icon Free Quotes
  • Pros icon No-Hassle Pricing
  • Pros icon Excellent Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Doors
  • Service icon Custom Windows
  • Service icon Business 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

Boston Glass Group

Chestnut Hill, MA
3.6
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Price Transparency
  • Pros icon Dependable Service
  • Pros icon Good Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Tempered Glass
  • Service icon Doors
  • Service icon Custom Windows
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.bostonglassgroup.com/
Address: 801 Boylston St, Chestnut Hill, MA 02467
Phone: (617) 505-6091

Rite Window

Woburn, MA
3.6
★★★★★
  • Pros icon Excellent Customer Service
  • Pros icon Reliable Service
  • Pros icon Helps Educate Customers
  • Pros icon No-fee Quotes

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 Locally Recognized for Quality
  • Pros icon Educational Website
  • Pros icon Excellent Customer Service
  • Pros icon Reliable Appointment Windows

Services Offered

  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Double-Hung
  • Service icon Bay 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 Charitable Giving
  • Pros icon Price Transparency
  • Pros icon Helps Educate Customers
  • Pros icon No-fee Quotes

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 Helps Educate Customers
  • Pros icon Free Quotes
  • Pros icon Dependable Service
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Window Designs
  • 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

Watertite Company Inc

Natick, MA
3.6
★★★★★
  • Pros icon Helps Educate Customers
  • Pros icon No-fee Quotes
  • Pros icon Locally Recognized for Quality
  • Pros icon No-Hassle Pricing

Services Offered

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

Website: https://watertiteco.com/
Address: 30 N Main St, Natick, MA 01760
Phone: (508) 655-5588

Rogers Insulation Specialists

Framingham, MA
3.6
★★★★★
  • Pros icon Arrives on Time
  • Pros icon Award-Winning
  • Pros icon Free Quotes
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung

Website: https://www.rogersinsulation.com/
Address: 225 Arlington St Suite G, Framingham, MA 01702
Phone: (508) 875-3700

Arlmont Glass & Mirror

Medford, MA
3.4
★★★★★
  • Pros icon Excellent Customer Service
  • Pros icon Dependable Service
  • Pros icon No-Hassle Pricing
  • Pros icon Educational Website

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Custom Windows
  • 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 Free Quotes
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Commercial 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 No-Hassle Pricing
  • Pros icon Free Quotes
  • Pros icon Excellent Customer Service
  • Pros icon Consistent Workmanship

Services Offered

  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • 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 Good Customer Service
  • Pros icon Helps Educate Customers
  • Pros icon No-Hassle Pricing
  • Pros icon Free Quotes

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Doors
  • Service icon Custom Windows
  • 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 Natick

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

Services Offered

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

Website: https://www.pellabranch.com/boston/showrooms/natick/
Address: 583 Worcester St, Natick, MA 01760
Phone: (781) 239-1161

Pella Windows & Doors of Woburn

Woburn, MA
3.3
★★★★★
  • Pros icon Educational Website
  • Pros icon Award-Winning
  • Pros icon Free Quotes
  • Pros icon Good Customer Service

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 Timely Service
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Dependable Service

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 Helps Educate Customers
  • Pros icon Excellent Customer Service

Services Offered

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

GF Sprague & Company, Inc.

Needham, MA
3.3
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Supports Charities

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Aluminum Window Frames

Website: https://www.gfsprague.com/
Address: 45 Kearney Rd, Needham, MA 02494
Phone: (781) 348-9922

Central Glass Co

Westminster, MA
3.3
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon No-fee Quotes

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) 537-3962

Wayside Glass & Mirror

Marlborough, MA
3.3
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Excellent Customer Service
  • Pros icon Free Quotes

Services Offered

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

Website: http://www.waysideglass.com/
Address: 940 Boston Post Rd E, Marlborough, MA 01752
Phone: (508) 485-3600

How Installing Energy-Efficient Windows in Nashua Saves You Money

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

  • Protect your investment: The older your home is, the more likely you are to benefit from switching to energy-efficient windows. Older homes usually have windows that are outdated, leaky or maybe even damaged in some way. Updating your windows could help raise the value of your property if you decide to sell.
  • Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out harmful UV rays, reducing fading of your furniture, carpet and other valuables.
  • Reduce your carbon footprint: Reducing the amount of energy you use also lowers your carbon emissions. You could reduce it by about 152 pounds.
  • Save money on power bills: The Department of Energy estimates that heat gained or lost via windows accounts for around 25-30% of energy use in your home. Upgrading to energy-efficient windows can help reduce that amount, which helps you save more on your bills.

Estimated Cost of Window Replacement in Nashua

Windows come in different styles, shapes and purposes, so costs and services will vary considerably depending on your project. Below, we go over the typical cost and services that you'll find from window installation companies.

How Much Do New Windows Cost?

Although the national average of installing one window is around $600, it can range from $200 to $1,200. But costs will differ significantly depending on your location, the quality of your products, the current condition of your home and the number of windows you need. A lot of window companies also offer replacement door installations and other add-ons like baths, shutters, coating and more. Additional services will increase overall project costs.

It's also worth bearing in mind that energy-efficient windows will usually cost more initially, but Energy Star predicts that switching out the windows on your Nashua home translates to an average energy savings of $236 to $319 each year for single-pane window replacement, or between $87 to $126 each year for double-pane windows. How much you'll save by switching to energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.

The cost of your window installation will also vary based on the type of material you choose for the frames. Wood windows are typically the most expensive, though it depends if they are 100% wood or clad with aluminum or vinyl. Fiberglass windows also tend to be a bit more expensive than vinyl, but they are more efficient.

What Services do Window Installers Offer?

The first question to ask yourself when considering a window replacement is: Do you need a full-frame installation or a pocket installation?

Full-frame installations are usually recommended when you want to change the style of your windows or your window has significant deterioration. With this service, your installers will replace the total window, including the trim, frame and sill. A pocket installation involves replacing a window within the old frame. So, instead of removing the whole unit and rebuilding it, the window installer will just put the replacement window (also called a retrofit or insert window) into the frame.

If you're still trying to decide which type of installation you need, you can ask your provider and get their advice. The decision mostly depends on how old the frames are and if there's any damage present.

Best Affordability

Window World

★★★★★
4.5

  • Large serice area
  • Lifetime warranty
  • EnergyStar Partner
  • Quality of service will depend on your area

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Award-winning company
  • Great industry reputation
  • Manufactures products in-house
  • No lifetime warranty

Best Warranty

Universal Windows Direct

★★★★★
4

  • Wide variety of products and services
  • Manufactures products in-house
  • Makes charitable contributions
  • Some installations carried out by third-party contractors

How We Choose the Best Window Installers in Nashua

EcoWatch is different from most reviewers, as we examine these companies through a sustainability lens. We've evaluated the best window installation companies in Nashua mainly based on their energy efficient offerings, as it's the most sustainable option and the best one for homeowners. Energy Star certified windows have been shown to lower electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

Service Area

This one is pretty self-explanatory, but we've chosen to highlight window installers that serve Nashua so you can find the best window installation company near you.

Work Quality

When it comes to 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 choose. We do give window installers higher marks if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.

Customer Reviews

We analyzed patterns in recent online reviews to determine the companies with the most consistent customer satisfaction, weighted by sample size. Customer satisfaction might be the most important factor, as it reflects the quality of services across most other categories, including quality of parts, cost, professionalism, quality of installation, warranty and more.

Cost

This one is a give-and-take: similar to other services, cheap window installers won't always provide the highest quality service. On the other hand, we want to make sure we're highlighting companies that provide a wide range of price and financing options so they're accessible to most homeowners.

Warranty

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

Years of Experience

Last but not least, we like to see companies that have been in the industry for a while. Window installers that have more years of experience earn higher rankings by our standards. We like to see at least ten years of experience.

Nashua, NH Window Replacement FAQs

How much should a window install cost?

The national average cost to replace one window is around $600 but can range from $200 to $1,200, based on a few different factors. The price is typically influenced by the type and material of the window, the location of your property and the size of the window. Also, bear in mind that energy-efficient windows may cost more initially but can save you a decent amount of money a year in energy bills.

What are the different types of windows?

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

When do I need to use a window installation company?

You should hire a window installation professional whenever you want new windows. Installing windows is a involved process that can be difficult and time-consuming, so it's best handled by the professionals.

How do you know it's time to replace your windows?

Windows have an average lifespan of about 20 to 30 years. If your windows are older than that, then they should probably be replaced. Apart from that, if your windows have damage anywhere on them, or they have become difficult to operate, they may need to be replaced.

Should I replace my windows all at once?

If your windows are greater than 20 years old, it's probably time to replace all of them. At that point, they are usually less efficient, draftier and/or more damaged than new windows. Replacing your windows all at the same time will involve less paperwork and less time.

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