20 Best Window Companies in Sanford, ME (2025 Reviews)
Thinking about upgrading your windows? We’ve got you covered in this list of the best window installation companies.
We analyzed all the top-rated window companies in Sanford 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 doing renovations or have windows that need repairs, windows play an important role in conserving electricity in your home. According to the Department of Energy, heat or cool air lost through old or damaged windows could account for 25-30% of residential energy climate control costs.
That’s also bad news for the environment, as the additional energy used by drafty windows increases your carbon footprint.
As windows are so important for your home, selecting the best company for you is a big decision to make. That’s why the EcoWatch team has put together this list of the top window replacement 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 Sanford
The EcoWatch Reviews team assessed dozens of installers across the country to find the best window companies for our readers. The companies reviewed in this article scored best in our categories, which include energy-efficient offerings, price, availability, customer service 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 is the largest window replacement company in the country, known for its vinyl windows and affordability. This company has 27 years of experience in the windows industry, and it has established itself as one of the most reputable companies in the business. The company has many positive reviews from customers on online review websites.
You may want to consider going with Window World if you're interested in a installer 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 carries some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want high-quality Energy Star windows when inquiring. 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 Sanford?Window World doesn’t have any pricing information displayed on its website, but it's known for offering some of the most affordable window installations around. The best way to know for sure is to request a free quote from the company.

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 is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has 27 years of experience in the windows industry, and it has established itself as one of the most reputable companies in the business. The company has many positive reviews from customers on online review websites.
You may want to consider going with Andersen if you're interested in a installer 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 carries some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want high-quality Energy Star windows when inquiring. 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 Sanford?Andersen doesn’t have any pricing information displayed 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 know for sure is to request a free quote from the company.
We’ve recommended providers with shining reputations, but note that these are national companies, so your service may differ depending on your local crew. We have tried to be unbiased and transparent by mentioning pros and cons for each company reviewed.
More Window Companies in Sanford
Renewal by Andersen Window Replacement
Saco, MEEducational Website
Good Customer Service
Price Transparency
Free assessment
Services Offered
Custom Window Designs
Vinyl Frames
Metal Frames
Double-Hung
Window Replacement/Installation
Bay Windows
Glass Doors
Energy-Efficient Options
DaBella
Salem, NHGood Customer Service
Timely Service
Services Offered
Window Replacement/Installation
Double-Hung
Glass Doors
Vinyl Frames
Great Bay Roofing & Exteriors
Rochester, NHFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Bay Windows
Skylights
Lighthouse Contracting Group, LLC
Gilford, NHGood Customer Service
Educational Website
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Affordable Vinyl Windows & Siding Inc
Auburn, NHPrice Transparency
Good Customer Service
Services Offered
Vinyl Frames
Window Replacement/Installation
Pro Entry Installs LLC
Salem, NHPrice Transparency
Educational Website
Timely Service
Good Customer Service
Services Offered
Window Replacement/Installation
Double-Hung
Glass Doors
Bay Windows
Manny's Roofing
Pelham, NHTimely Service
Good Customer Service
Price Transparency
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Roof Windows
Skylights
First Choice Construction, LLC
Beverly, MAGood Customer Service
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
Glass Routes Co
Madbury, NHPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Mirrors
Glass Showers
Custom Glass
Window Replacement/Installation
Vinyl Frames
Dover Roofing LLC
Dover, NHEducational Website
Free assessment
Price Transparency
Good Customer Service
Services Offered
Skylights
Window Replacement/Installation
Dependable J M R Siding
Manchester, NHFree assessment
Services Offered
Vinyl Frames
Energy-Efficient Options
Window Replacement/Installation
Midcoast Glass & Windows
Topsham, MEFree assessment
Good Customer Service
Price Transparency
Services Offered
Storm/Impact Windows
Glass Repair
Bay Windows
Energy-Efficient Options
Glass Doors
Glass Showers
Vinyl Frames
Window Replacement/Installation
Dracut Window & Door
Dracut, MAEducational Website
Price Transparency
Free assessment
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Portland Glass of Dover
Dover, NHEducational Website
Good Customer Service
Price Transparency
Free assessment
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Glass Repair
Pella Windows & Doors of Scarborough
Scarborough, MEGood Customer Service
Educational Website
Free assessment
Services Offered
Bay Windows
Window Replacement/Installation
Double-Hung
Glass Doors
Pella Windows & Doors of Newington
Newington, NHFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Glass Doors
Vinyl Frames
Bay Windows
Wood Frames
Double-Hung
Window Replacement/Installation
Rite Window
Exeter, NHGood Customer Service
Free assessment
Educational Website
Price Transparency
Services Offered
Double-Hung
Bay Windows
Glass Showers
Energy-Efficient Options
Window Replacement/Installation
Glass Doors
The Window Source NH
Seabrook, NHFree assessment
Good Customer Service
Price Transparency
Educational Website
Services Offered
Energy-Efficient Options
Storm/Impact Windows
Bay Windows
Glass Doors
Vinyl Frames
Double-Hung
Window Replacement/Installation
Morgan Exteriors
Hooksett, NHEducational Website
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Universal Windows Direct
Manchester, NHFree assessment
Price Transparency
Good Customer Service
Educational Website
Services Offered
Bay Windows
Window Replacement/Installation
Double-Hung
Glass Doors
Calculate how much you can expect to pay for window installation and replacement in Sanford, 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 Sanford Saves You Money
Energy-efficient windows can provide benefits in several ways. Here are a few reasons you may want to think about making the switch:
- Reduce your carbon footprint: In Sanford, you can lower your indirect greenhouse gas emissions by about 163 pounds per year when you switch to energy-efficient windows.
- 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 home if you decide to sell.
- Protect your valuables from fading: When you switch to energy-efficient windows with low-emissivity coatings, your floors, carpets and furniture will be protected from fading because of their ability to filter out damaging UV rays.
- Save money on electricity bills: After you switch to energy-efficient windows, you can see a reduction in your bills by about 12% because you’ll require less energy to heat or cool your home.
Estimated Cost of Window Replacement in Sanford
Let’s take a look at the cost of installing new windows and the kinds of services offered by installers.
How Much Do New Windows Cost?
The typical cost to install one window is about $600 but can range from $200 to $1,200. This is due to the fact that the cost of window installations depend on several factors specific to your home, such as the size, material and number of windows you need to install, as well as the location of your property.
It’s important to bear in mind that windows with higher efficiency may cost more upfront but can save you hundreds of dollars via returns on your energy bills. Investing in certified energy-efficient windows can save Sanford homeowners $383+ a year when replacing single-pane windows.
Costs will also vary depending on the material you pick for your window frames. Aluminum frames cost the least. They’re sturdy, light and easy to maintain, but provide poor insulation. Vinyl frames are a bit more expensive and provide good insulation. Composite frames made using wood fibers encased in plastic also provide good insulation and are moderately expensive. Wood frames are the most expensive and are the most in-demand. They’re also aesthetically pleasing and provide decent insulation for your home.
What Services do Window Installers Offer?
There are generally two kinds of window replacement services: full-frame and pocket installations.
Full-frame installations are usually recommended when you want a new style or your window has a lot of rot. With this service, your installers will replace the complete window, including the frame, trim and sill. Pocket installations (or retrofits) entail installing a new window within its existing frame, which makes pocket installations less labor-intensive and costly. But, if the frame has any rot or deterioration, you should opt for a full-frame installation instead.
Your window installation company can help you figure out which type of installation you should get.
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 Sanford
The EcoWatch Reviews team differs from other reviewers since we’re examining these companies through a sustainability lens. We have reviewed the best window installers in Sanford mainly based on their energy efficient offerings, as it’s the most sustainable option and the best one for homeowners. Energy-efficient windows have been shown to reduce your power bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:
Service Area
Since this is a guide for Sanford, we gave more points to companies that provide services to the city. There are other reputable providers that didn’t make the cut because of the low odds that they would serve the average homeowner in Sanford.
Work Quality
When picking new windows, the quality and range of services can often play just as important of a role in insulation and performance as the brand of window you opt for. We do rate window installers higher if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
Another self-explanatory yet super important review factor is customer feedback. If most customers don’t have nice things to say about their experience with a certain installer, you won’t see it featured on EcoWatch.
Cost
This one is a give-and-take: similar to other services, cheap window installation companies are not going to provide the most quality service. Still, we want to ensure we’re highlighting companies that provide a variety of price and financing options so they’re accessible to most homeowners.
Warranty
As discussed, windows are a serious investment, so you’ll want to be certain that investment is protected. Window installation companies that offer lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Due to Sanford’s climate, homeowners will want to mitigate low efficiency, rot and water damage. We factored in local experience to reflect the ability of Sanford window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.
Sanford, ME Window Replacement FAQs
What is the typical cost to install new windows?
The typical cost of replacing a single window can range from $450 to $650. There are several factors that influence how much it costs, such as styles and sizes of windows, how energy-efficient the windows are, the materials used in designing the windows, your property’s location, local labor costs and the number of windows.
What kind of window is the best for energy efficiency?
Generally, double-pane windows are more efficient than single-pane windows and windows that don’t open are more efficient than windows that do. If you want to be sure you’re getting the most energy-efficient windows, look for models with the blue Energy Star certification attached to them — that means they’re certified energy-efficient by the U.S. Department of Energy.
What do window installation companies do?
Window installers cover the entire process — from replacing your old windows with new ones to cleaning up after the installation. Additionally, some companies offer window manufacturing, customization and repairs.
Should I replace all my windows at once?
If you want to get more efficient windows and save money on energy costs, replacing all of your windows together is the only way to see a noticeable difference. On the other hand, if you have just a few windows that are damaged or drafty, you can replace just those.