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
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Why you can trust EcoWatch
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.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- 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
EnergyStar Partner
Large serice area
Low prices relative to competitors
Great industry reputation
Lifetime warranty
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 WindowsWindow 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
Great industry reputation
Award-winning company
Member of US Green Building Council
Manufactures products in-house
No lifetime warranty
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 WindowsRenewal 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, MEGood Customer Service
Free assessment
Educational Website
Price Transparency
Services Offered
Custom Window Designs
Bay Windows
Metal Frames
Vinyl Frames
Window Replacement/Installation
Glass Doors
Energy-Efficient Options
Double-Hung
Great Bay Roofing & Exteriors
Rochester, NHGood Customer Service
Price Transparency
Free assessment
Educational Website
Services Offered
Bay Windows
Window Replacement/Installation
Skylights
Lighthouse Contracting Group, LLC
Gilford, NHEducational Website
Good Customer Service
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Midcoast Glass & Windows
Topsham, MEGood Customer Service
Price Transparency
Free assessment
Services Offered
Energy-Efficient Options
Glass Repair
Storm/Impact Windows
Window Replacement/Installation
Glass Doors
Bay Windows
Vinyl Frames
Glass Showers
Dover Roofing LLC
Dover, NHFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Skylights
Window Replacement/Installation
Glass Routes Co
Madbury, NHFree assessment
Educational Website
Good Customer Service
Price Transparency
Services Offered
Custom Glass
Window Replacement/Installation
Mirrors
Glass Showers
Vinyl Frames
Pella Windows & Doors of Scarborough
Scarborough, MEFree assessment
Good Customer Service
Educational Website
Services Offered
Glass Doors
Window Replacement/Installation
Double-Hung
Bay Windows
Portland Glass of Dover
Dover, NHEducational Website
Price Transparency
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Glass Repair
Pella Windows & Doors of Newington
Newington, NHGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Double-Hung
Bay Windows
Glass Doors
Vinyl Frames
Wood Frames
Window Replacement/Installation
Clearview Sunroom & Window LLC
Barrington, NHEducational Website
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Portland Glass of Portsmouth
Portsmouth, NHPrice Transparency
Good Customer Service
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Glass Repair
Glass Showers
Broken Glass Company
Wells, MEEducational Website
Good Customer Service
Services Offered
Skylights
Glass Doors
Glass Showers
Glass Repair
Window Replacement/Installation
Custom Glass
Interstate Glass & Mirror Inc
Somersworth, NHPrice Transparency
Services Offered
Window Replacement/Installation
Glass Doors
Glass Showers
Screen Repair
Mirrors
Bay Windows
Pella Windows & Doors of Meredith
Meredith, NHEducational Website
Good Customer Service
Price Transparency
Free assessment
Services Offered
Bay Windows
Glass Doors
Window Replacement/Installation
Double-Hung
Window World of Southern Maine
Westbrook, MEPrice Transparency
Educational Website
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Double-Hung
Bay Windows
Glass Doors
A-BEST Window
South Portland, MEPrice Transparency
Free assessment
Good Customer Service
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Norton Exteriors
Epping, NHFree assessment
Good Customer Service
Price Transparency
Timely Service
Services Offered
Window Replacement/Installation
Southers Construction
Dover, NHEducational Website
Price Transparency
Good Customer Service
Timely Service
Free assessment
Services Offered
Window Replacement/Installation
Bay Windows
Double-Hung
Jr's Glass & Windows
Lewiston, MEGood Customer Service
Free assessment
Services Offered
Glass Showers
Window Replacement/Installation
Custom Glass
Granite State Glass
Portsmouth, NHPrice Transparency
Good Customer Service
Educational Website
Services Offered
Glass Showers
Screen Repair
Window Replacement/Installation
Calculate how much you can expect to pay for window installation and replacement in Windham, ME using our customized window cost calculator.
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.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- 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.