20 Best Window Companies in Portsmouth, NH (2024 Reviews)

Looking to improve your home’s energy efficiency? The top window replacement companies can help.

We analyzed all the top-rated window companies in Portsmouth and selected the best 20 based on:

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

By EcoWatch Local Advisors

Updated February 01, 2024

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.

Whether you're updating for style or have windows that need repairs, windows play a key role in conserving your home's electricity. The Department of Energy estimates that heat or cool air lost through traditional or outdated windows could make up about 30% of residential energy climate usage. In Portsmouth, where the electric bills are an average of $33 per month, that’s almost $$120 per year wasted.

That’s not great for either your wallet or the environment, but one of the best window installation companies can help with that.

So if you’re building a new home, renovating or replacing your windows in Portsmouth, you’ve found the best place to get started.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

Best Window Installation & Replacement Companies in Portsmouth

The EcoWatch Reviews team researched dozens of window installation companies across Portsmouth to narrow our list down to the best ones. The providers we’ve reviewed in this article scored best in our categories, which include energy-efficient offerings, price, availability, customer service and more.

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 Great industry reputation
  • Pros icon Award-winning company
  • Pros icon Member of US Green Building Council
  • Pros icon Manufactures products in-house
Cons:
  • Pros icon No lifetime warranty
  • Pros icon More expensive than competition

Renewal by Andersen offers the best availability in Portsmouth. This provider has 27 years of experience in the window installation business, and it has established itself as one of the most respected companies in the business.

If you’re looking for a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started, Andersen may be the right company for you.

Energy Efficiency of Renewal by Andersen Windows

Renewal by Andersen’s commitment to sustainability shows in its energy-efficient window offerings. 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 Portsmouth?

Pricing information is not available on Andersen’s website, as the cost of window replacement varies greatly depending 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 pricing information.

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

Window World

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

Window World offers windows expertise in Portsmouth. This provider has 27 years of experience in the window installation business, and it has established itself as one of the most respected companies in the business.

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, Window World may be the right company for you.

Energy Efficiency of Window World Windows

Window World’s commitment to sustainability shows in its energy-efficient window offerings. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.

How much does Window World cost in Portsmouth?

Pricing information is not available on Window World’s website, as the cost of window replacement varies greatly depending on how many and what type(s) of windows you need. However, 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.

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 Makes charitable contributions
  • Pros icon Manufactures products in-house
  • Pros icon Wide variety of products and services
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Limited service area
  • Pros icon Some installations carried out by third-party contractors
  • Pros icon Quality of service will depend on your area

Universal Windows Direct offers the best warranty in Portsmouth. This provider has 20 years of experience in the window installation business, and it has established itself as one of the most respected companies in the business.

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

Universal Windows Direct’s commitment to sustainability shows in its energy-efficient window offerings. 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 Portsmouth?

Pricing information is not available on Universal’s website, as the cost of window replacement varies greatly depending on how many and what type(s) of windows you need. However, 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. Requesting a free quote on its website is the best way to get more accurate pricing information.

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 Portsmouth. This provider has 23 years of experience in the window installation business, and it has established itself as one of the most respected companies in the business.

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

Energy Efficiency of Aeroseal Windows Windows

Aeroseal Windows’s commitment to sustainability shows 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 Portsmouth?

Pricing information is not available on Aeroseal’s website, as the cost of window replacement varies greatly depending on how many and what type(s) of windows you need. However, it provides high-quality windows at a competitive price point. Requesting a free quote on its website is the best way to get more accurate pricing information.

We strive to be unbiased and transparent by including pros and cons for every company. Additionally, any partnerships do not affect our rankings.

More Window Companies in Portsmouth

Renewal by Andersen Window Replacement

Saco, ME
4.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

  • Service icon Andersen
  • Service icon Vinyl Frames
  • Service icon Bay Windows
  • Service icon Aluminum Frames
  • Service icon Energy-Efficient Options
  • Service icon Sliding Glass Doors
  • Service icon Custom Window Designs
  • Service icon Window Install & Replacement

Website: https://windowsdoorsportland.com/
Address: 66 Industrial Park Rd, Saco, ME 04072
Phone: (207) 358-6094

Window World of New Hampshire

Manchester, NH
4.4
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Timely Service
  • Pros icon Educational Website

Services Offered

  • Service icon Double-Hung
  • Service icon Window Install & Replacement
  • Service icon Sliding Glass Doors
  • Service icon Bay Windows

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

Pella Windows & Doors of Newington

Newington, NH
4.8
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Window Repair
  • Service icon Fiberglass Frames
  • Service icon Sliding Glass Doors
  • Service icon Double-Hung
  • Service icon Pella
  • Service icon Vinyl Frames
  • Service icon Bay Windows
  • Service icon Window Install & Replacement
  • Service icon Wood Frames
  • Service icon Glass Doors

Website: https://www.pellabranch.com/new-england/showrooms/newington/
Address: 25 Fox Run Rd Suite 2, Newington, NH 03801
Phone: (603) 725-4690

Portland Glass of Portsmouth

Portsmouth, NH
4.6
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Mirrors
  • Service icon Glass Repair
  • Service icon Window Install & Replacement
  • Service icon Window Repair
  • Service icon Custom Glass
  • Service icon Commercial Windows
  • Service icon Glass Showers

Website: https://www.portlandglass.com/portsmouth/
Address: 70 Heritage Ave, Portsmouth, NH 03801
Phone: (603) 945-2324

Glass Routes Co

Madbury, NH
4.9
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Mirrors
  • Service icon Vinyl Frames
  • Service icon Commercial Windows
  • Service icon Window Repair
  • Service icon Glass Showers
  • Service icon Custom Glass

Website: http://www.glassroutes.net/
Address: 181 Littleworth Rd, Madbury, NH 03823
Phone: (603) 742-2600

Southers Construction

Dover, NH
4.2
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Free assessment

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Double-Hung
  • Service icon Bay Windows
  • Service icon Window Repair

Website: http://southersconstruction.com/
Address: 12 Crosby Rd, Dover, NH 03820
Phone: (603) 734-4572

Portland Glass of Dover

Dover, NH
4.8
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Glass
  • Service icon Window Repair
  • Service icon Glass Repair
  • Service icon Mirrors
  • Service icon Window Install & Replacement
  • Service icon Commercial Windows
  • Service icon Glass Showers

Website: https://www.portlandglass.com/dover/
Address: 119 New Rochester Rd, Dover, NH 03820
Phone: (603) 716-9167

The Window Source NH

Seabrook, NH
4.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Vinyl Frames
  • Service icon Bay Windows
  • Service icon Window Install & Replacement
  • Service icon Storm Windows
  • Service icon Energy-Efficient Options
  • Service icon Sliding Glass Doors

Website: https://www.windowsourcenh.com/
Address: 779 Lafayette Rd Suite 1, Seabrook, NH 03874
Phone: (603) 764-7212

Clearview Sunroom & Window LLC

Barrington, NH
4.7
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Install & Replacement

Website: http://www.clearviewsunroom.com/
Address: 1037 Calef Hwy, Barrington, NH 03825
Phone: (603) 750-7577

Interstate Glass & Mirror Inc

Somersworth, NH
4.6
★★★★★
  • Pros icon Price Transparency

Services Offered

  • Service icon Mirrors
  • Service icon Screen Repair
  • Service icon Window Repair
  • Service icon Window Install & Replacement
  • Service icon Glass Showers
  • Service icon Storm Doors
  • Service icon Bay Windows

Website: http://interstateglass.com/
Address: 228 NH-108, Somersworth, NH 03878
Phone: (603) 742-0600

Granite State Glass

Portsmouth, NH
3.2
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Commercial Windows
  • Service icon Aluminum Frames
  • Service icon Screen Repair
  • Service icon Window Install & Replacement
  • Service icon Window Repair
  • Service icon Glass Showers

Website: http://granitestateglass.com/
Address: 1 Mirona Rd, Portsmouth, NH 03801
Phone: (603) 436-0001

Dover Roofing LLC

Dover, NH
2.8
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Aluminum Frames
  • Service icon Window Repair
  • Service icon Skylights
  • Service icon Commercial Windows

Website: https://doverroofingcontractors.com/
Address: 120 Durham Rd, Dover, NH 03820
Phone: (603) 498-5741

Nick's Door And Window

Portsmouth, NH
2.8
★★★★★

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Storm Doors
  • Service icon Andersen
  • Service icon Glass Doors
  • Service icon Fiberglass Frames
  • Service icon Aluminum Frames

Website: http://nicksdw.com/
Address: 199 Constitution Ave # 6, Portsmouth, NH 03801
Phone: (603) 433-3346

Broken Glass Company

Wells, ME
4.5
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Commercial Windows
  • Service icon Window Install & Replacement
  • Service icon Glass Doors
  • Service icon Window Repair
  • Service icon Skylights
  • Service icon Glass Showers
  • Service icon Glass Repair
  • Service icon Custom Glass

Website: https://brokenglassco.com/
Address: 223 Post Rd, Wells, ME 04090
Phone: (207) 216-9931

Norton Exteriors

Epping, NH
3.3
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Timely Service

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Residential Windows

Website: https://nortonexteriorsnh.com/
Address: 252 Calef Hwy, Epping, NH 03042
Phone: (603) 434-6468

Atlantic Window Warehouse

Newburyport, MA
3.4
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Timely Service
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Screen Repair
  • Service icon Window Install & Replacement
  • Service icon Vinyl Frames
  • Service icon Window Repair
  • Service icon Glass Repair

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

Great Bay Roofing & Exteriors

Rochester, NH
3.3
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Repair
  • Service icon Skylights
  • Service icon Window Install & Replacement
  • Service icon Bay Windows

Website: https://www.greatbayroofing.com/
Address: 12 N Main St, Rochester, NH 03867
Phone: (603) 748-7254

Corporate Office for Pella of Boston

Haverhill, MA
4.2
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Glass Doors
  • Service icon Pella
  • Service icon Fiberglass Frames
  • Service icon Double-Hung
  • Service icon Sliding Glass Doors
  • Service icon Bay Windows
  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Energy-Efficient Options

Website: https://www.pellabranch.com/boston/
Address: 45 Fondi Rd, Haverhill, MA 01832
Phone: (978) 373-2500

Affordable Vinyl Windows & Siding Inc

Auburn, NH
5.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Commercial Windows
  • Service icon Window Install & Replacement
  • Service icon Vinyl Frames

Website: http://www.affordwindow.com/
Address: 320 Rockingham Rd STE 5, Auburn, NH 03032
Phone: (603) 647-7474

DaBella

Salem, NH
4.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Bay Windows
  • Service icon Glass Showers
  • Service icon Vinyl Frames

Website: https://dabella.us/location/salem/
Address: 13 Red Roof Ln Suite 201, Salem, NH 03079
Phone: (603) 691-2339
Portsmouth Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Portsmouth, NH using our customized window cost calculator.

Estimated Window Cost:
161 homeowners have requested a free estimate in the last 3 days.

Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.

How Installing Energy-Efficient Windows in Portsmouth Saves You Money

There are several perks of upgrading to energy-efficient windows. A few reasons you may want to consider making the switch are the following:

  • Protect your investment: If your home is on the older side, your windows are most likely outdated. Upgrading your windows can improve the insulation in your home and also help raise the value of your house if you decide to sell.
  • Reduce your carbon footprint: Since energy-efficient windows improve the insulation in your home, you can lower your carbon footprint by about 12%, according to Energy Star.
  • Save money on electricity bills: According to the Department of Energy, heat gained or lost through windows accounts for around 25-30% of household energy use. Replacing your windows with energy-efficient models can help lower that number, therefore saving you about 12% more on your bills.
  • Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which filter out damaging UV rays, reducing fading of your furniture, carpet and other valuables.

Estimated Cost of Window Replacement in Portsmouth

Each window installation company provides varying services and has different price points depending on several factors.

How Much Do New Windows Cost?

Though the typical cost of replacing one window is around $600, it can range from $200 to $1,200. This is because the cost of window installations depend on several factors specific to your home, like the size, material and number of windows you need to install, as well as the location of your property.

Bear in mind that energy-efficient windows may cost more upfront, but Energy Star predicts the upgrade will save you between $101 and $583 a year when you install single-pane windows and between $27 and $197 a year when installing double-pane, clear glass windows. Your savings will vary depending on your local climate, energy rates and individual home characteristics.

Requesting free quotes from several installers is the best way to find out which one will work best for your budget.

What Services do Window Installers Offer?

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

Full-frame installations require replacing the full window — the sill, frame, trim and all. These are most common when you want a different style for your windows or when it has a great amount of rot or deterioration. Full-frame installations are more comprehensive and will increase overall costs. Pocket installations are simpler and won’t cost as much because they involve simply replacing the window within its existing frame. But if the frame has any damage, you may need a full-frame installation instead.

Your window installation company should be able to help you decide what’s best for your needs. In Portsmouth, the decision will mostly be based on the age of your windows and if there’s any moisture damage. Wood can decay if it’s not maintained properly over the years, so it’s a good idea to have a professional assess your frames and window sills.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

How We Choose the Best Window Installers in Portsmouth

The EcoWatch Reviews team differs from most reviewers since we examine these companies through a sustainability lens. Along with energy efficiency, we reviewed each installer and ranked them using the following methodology:

Service Area

This one is pretty self-explanatory, but we’ve chosen to highlight window installation companies that serve the Portsmouth area so you can find the right window installation company near you.

Work Quality

We’re willing to bet that you’re looking for professionals who do a great job installing windows. We’ve vetted each installer featured on this list to ensure its technicians are well-qualified and that the company has received plenty of positive customer feedback to vouch for its service.

Customer Reviews

We analyzed patterns in recent customer feedback to find the companies with the highest rates of customer satisfaction, weighted by sample size. Customer satisfaction may be the factor we place the most value on, as it indicates the quality of services across most other categories, including cost, quality of installation, professionalism, warranty, quality of parts and more.

Cost

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

Warranty

Protecting your investment in new windows is important to many homeowners. That’s why window installation companies that provide lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

Lastly, we like to see companies that have been in the industry for quite some time. Window installation companies that have more experience earn higher rankings by our standards. We like to see at least ten years of experience.

Portsmouth, NH Window Replacement FAQs

How much should window installation cost?

The average cost of replacing a single window can range between $450 and $650. There are a variety of factors that influence the cost, including styles and sizes of windows, how energy-efficient the windows are, the number of windows, local labor costs, the materials used in designing the windows and your property’s location.

What are the types of windows?

There are various kinds of windows you can get for your house, such as bay windows, transom windows, casement windows, picture windows, double-hung and single-hung windows, awning windows and slider windows.

When do I need to use a window installation company?

You should use a window installation company whenever you want new windows. Installing windows is a complicated process that can take a lot of time, so it’s best handled by the professionals.

What time of year should I replace my windows?

Replacement windows can be installed at any time, but autumn might be the best season. No matter 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. Most importantly, the weather should be dry.

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