20 Best Window Companies in Windham, ME (2025 Reviews)

Looking to improve your house’s insulation? The best window replacement companies can help.

We analyzed all the top-rated window companies in Windham 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 January 24, 2025

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 aesthetics or have windows that need repairs, windows play a key role in conserving energy in your home. The Department of Energy estimates that heat gained or lost through old or damaged windows could be responsible for about 30% of heating and cooling costs. In Windham, where the energy bills are an average of $30 per month, that’s almost $$108 per year wasted.

Replacement windows improve the insulation in your home, not only making you more comfortable during the summer and winter, but also saving you money and helping the environment.

Because windows have such a large impact on your home, picking the best company for you is a big decision to make. That’s why the EcoWatch team has put together this list of the best window installation companies, so you can more easily make an informed decision.

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Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great Industry Reputation
  • Award-winning Company
  • Member of US Green Building Council
  • Manufactures products in-house
Save $375 Off Each Window
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

Best for Residential Windows

Window Nation

★★★★★
4.0
  • Custom Designs
  • Wide variety of products and services
  • Manufactures products in-house

Best Window Installation & Replacement Companies in Windham

The EcoWatch team assessed dozens of installers in Windham to find the best window replacement companies for our readers. The companies mentioned in this article scored best in our categories: energy-efficient offerings, customer service, availability, price and more.

Window World logo
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 Windham. This window installation company has been in business since 1995 and currently serves 200 locations nationwide. The company has many glowing reviews from customers on online review websites.

You may want to consider picking Window World 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.

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 Windham?

Prices aren’t available on Window World’s website, but it's known for offering some of the most affordable window installations around. You can request a free quote on its website for more information about pricing.

Renewal by Andersen logo
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 Windham. This window installation company has been in business since 1995 and currently serves nearly every state except Mississippi and West Virginia. The company has many glowing reviews from customers on online review websites.

You may want to consider picking Andersen 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.

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 Windham?

Prices aren’t available on Andersen’s website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. You can request a free quote on its website for more information about pricing.

We’ve recommended providers with shining reputations, but keep in mind these are national companies, so your service may differ depending on your local crew. We have tried to remain unbiased and transparent by listing pros and cons for every company we reviewed.

More Window Companies in Windham

Renewal by Andersen Window Replacement

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

Services Offered

  • Service icon Custom Window Designs
  • Service icon Bay Windows
  • Service icon Metal Frames
  • Service icon Vinyl Frames
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung

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

Great Bay Roofing & Exteriors

Rochester, NH
5.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Bay Windows
  • Service icon Window Replacement/Installation
  • Service icon Skylights

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

Lighthouse Contracting Group, LLC

Gilford, NH
5.0
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation

Website: https://lighthousecontractinggroup.com/
Address: 104 Lily Pond Rd Unit A, Gilford, NH 03249
Phone: (603) 567-4172

Midcoast Glass & Windows

Topsham, ME
4.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Glass Repair
  • Service icon Storm/Impact Windows
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Bay Windows
  • Service icon Vinyl Frames
  • Service icon Glass Showers

Website: http://www.midcoastglassmaine.com/
Address: 9 Monument Pl #1, Topsham, ME 04086
Phone: (207) 725-2264

Dover Roofing LLC

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

Services Offered

  • Service icon Skylights
  • Service icon Window Replacement/Installation

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

Glass Routes Co

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

Services Offered

  • Service icon Custom Glass
  • Service icon Window Replacement/Installation
  • Service icon Mirrors
  • Service icon Glass Showers
  • Service icon Vinyl Frames

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

Pella Windows & Doors of Scarborough

Scarborough, ME
4.8
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Glass Doors
  • Service icon Window Replacement/Installation
  • Service icon Double-Hung
  • Service icon Bay Windows

Website: https://www.pellabranch.com/new-england/showrooms/scarborough/
Address: 400 Expedition Dr Suite B, Scarborough, ME 04074
Phone: (207) 253-1856

Portland Glass of Dover

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

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Energy-Efficient Options
  • Service icon Glass Repair

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

Pella Windows & Doors of Newington

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

Services Offered

  • Service icon Double-Hung
  • Service icon Bay Windows
  • Service icon Glass Doors
  • Service icon Vinyl Frames
  • Service icon Wood Frames
  • Service icon Window Replacement/Installation

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

Clearview Sunroom & Window LLC

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

Services Offered

  • Service icon Window Replacement/Installation

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

Portland Glass of Portsmouth

Portsmouth, NH
4.7
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Glass Repair
  • Service icon Glass Showers

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

Broken Glass Company

Wells, ME
4.6
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Skylights
  • Service icon Glass Doors
  • Service icon Glass Showers
  • Service icon Glass Repair
  • Service icon Window Replacement/Installation
  • Service icon Custom Glass

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

Interstate Glass & Mirror Inc

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

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Glass Showers
  • Service icon Screen Repair
  • Service icon Mirrors
  • Service icon Bay Windows

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

Pella Windows & Doors of Meredith

Meredith, NH
4.5
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Bay Windows
  • Service icon Glass Doors
  • Service icon Window Replacement/Installation
  • Service icon Double-Hung

Website: https://www.pellabranch.com/new-england/showrooms/meredith/
Address: 71 NH-25, Meredith, NH 03253
Phone: (603) 725-4660

Window World of Southern Maine

Westbrook, ME
4.3
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Double-Hung
  • Service icon Bay Windows
  • Service icon Glass Doors

Website: https://www.windowworldofmaine.com/
Address: 2 Karen Dr Unit 5, Westbrook, ME 04092
Phone: (207) 747-5117

A-BEST Window

South Portland, ME
4.3
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation

Website: http://www.abestwindow.com/
Address: 1199 Broadway, South Portland, ME 04106
Phone: (207) 799-6771

Norton Exteriors

Epping, NH
4.2
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Timely Service

Services Offered

  • Service icon Window Replacement/Installation

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

Southers Construction

Dover, NH
3.9
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Timely Service
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Bay Windows
  • Service icon Double-Hung

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

Jr's Glass & Windows

Lewiston, ME
3.5
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Showers
  • Service icon Window Replacement/Installation
  • Service icon Custom Glass

Website: https://www.jrsglassandwindows.com/
Address: 969 Lisbon St, Lewiston, ME 04240
Phone: (207) 504-4082

Granite State Glass

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

Services Offered

  • Service icon Glass Showers
  • Service icon Screen Repair
  • Service icon Window Replacement/Installation

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

Calculate how much you can expect to pay for window installation and replacement in Windham, ME 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 Windham Saves You Money

Energy-efficient windows can benefit you in more than one way. Here are some reasons you may want to think about making the switch:

  • Protect your investment: The older your home is, the more likely it is that switching to energy-efficient windows will benefit you. Older homes tend to have windows that are outdated, drafty or potentially even damaged in some way. Updating your windows could help raise the value of your home if you decide to sell.
  • Save on power bills: After you upgrade to energy-efficient windows, you can see a reduction in your bills by about 12% since you’ll need less energy to heat or cool your home.
  • Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which not only provide better insulation for your home, but also filter out damaging UV rays, preventing your furniture, carpet and other valuables from fading.
  • Decrease your carbon footprint: In Windham, you can reduce your indirect greenhouse gas emissions by about 163 pounds per year after you install energy-efficient windows.

Estimated Cost of Window Replacement in Windham

When researching window installation, each company offers varying services and costs. Let’s go over some typical costs and services.

How Much Do New Windows Cost?

The national average cost to replace one window is about $600 but can range anywhere from $200 to $1,200. But costs differ remarkably depending on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window companies also provide door replacements, which carry a higher price tag.

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

Getting free quotes from several providers is the best way to figure out which one will work best for your budget.

What Services do Window Installers Offer?

When it comes to window replacements, there are generally two types that your installer will have: full-frame and pocket installations.

A full-frame installation is a replacement of the full window. This service involves taking out the old window, the windowsill, and the exterior and interior trim. It can also involve additional materials, like insulation and drip edges, which increase the total cost of the project. It’s also worth noting that you may have to touch up the paint surrounding the window after a full-frame installation. A pocket installation means replacing a window without taking out the whole frame, which is generally less expensive than a full-frame installation.

If you’re still debating which kind of installation you need, you can consult with your provider and get their advice. The choice mostly depends on how old the frames are and if there’s any damage present.

Advertisement

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great Industry Reputation
  • Award-winning Company
  • Member of US Green Building Council
  • Manufactures products in-house
Save $375 Off Each Window
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

Best for Residential Windows

Window Nation

★★★★★
4.0
  • Custom Designs
  • Wide variety of products and services
  • Manufactures products in-house

How We Choose the Best Window Installers in Windham

EcoWatch reviews differ from other reviews, as we assess these companies through a sustainability lens. We have decided to evaluate the top window installation companies in Windham mostly based on energy efficiency, as it’s what’s best for the environment and for you as a homeowner. Energy-efficient windows can reduce your 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 installation companies that serve a wide variety of states and cities so you can find a quality window installation company near you.

Work Quality

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

Customer Reviews

We analyzed trends in recent online reviews to determine the companies with the most consistent customer satisfaction. Customer satisfaction might be the factor we place the most value on, as it reflects the quality of services across nearly every category, including quality of installation, warranty, cost, professionalism, quality of parts and more.

Cost

Cheaper windows certainly don’t mean better windows, but we know many of our readers try to keep costs low when possible. When analyzing the prices of providers, we gave higher scores to companies with reasonable prices and accessible financing rather than “cheaper” services.

Warranty

As discussed previously, windows are a considerable 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

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

Windham, ME Window Replacement FAQs

What is the typical cost to replace windows in a home?

The national average cost of replacing one window is about $600 but can range from $200 to $1,200, based on a variety of factors. The price is usually influenced by the type and material of the window, the size of the window and the location of your property. Also, remember 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?

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

Can you replace your own windows?

Even though you can install your own windows, doing so requires a lot of time and handiness. Hiring a professional can help ensure that the job is done properly and that you can avoid spending the time and effort of doing it yourself.

When is the best time of year to replace windows?

Although you can install windows any time of year, warmer weather is generally better for replacing windows. In addition, it shouldn’t be raining, since rain can make the installation harder.

Should I replace my windows all at once?

If your windows are greater than 20 years old, it’s most likely time to replace all of them. By that point, they are usually less efficient, draftier and/or more damaged than new windows. Replacing your windows all at once will involve less paperwork and less stress.