20 Best Window Companies in Decatur, GA (2025 Reviews)
If you’re looking to get new windows, our guide to the best window installation companies can help.
We analyzed all the top-rated window companies in Decatur 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 damaged windows, windows play a key role in conserving your home's electricity. If you have traditional, outdated windows, your AC or heater could be working overtime to heat or cool your house. This means spending more on power bills.
Replacement windows improve the insulation in your home, not only making you more comfortable during the summer and winter, but also saving you some money and helping the environment.
As windows are so important for your home, choosing the right company for you is a big choice to make. That’s why the EcoWatch team has put together this list of the top window replacement companies, so you can make an informed decision more easily.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Best Energy-Efficient Features
Champion
- Many years of experience
- Low prices relative to competitors
- Limetime warranty
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best Window Installation & Replacement Companies in Decatur
The EcoWatch team assessed several installers in Decatur to find the best ones for our readers. The providers in this article scored best in our categories, including 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 has windows expertise in Decatur. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has been in the window industry for about 27 years. The company has hundreds of glowing reviews from customers on online review websites.
It 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 is an Energy Star partner with a variety of energy-efficient windows. 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 Decatur?Prices are not available on Window World’s website because the cost of window replacement varies greatly based 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. Getting a free quote on its website is the best way to get more accurate information.

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 has the best availability in Decatur. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has been in the window industry for about 27 years. The company has hundreds of glowing reviews from customers on online review websites.
It 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 is an Energy Star partner with a variety of energy-efficient windows. 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 Andersen representative when inquiring about services.
How much does Renewal by Andersen cost in Decatur?Prices are not available on Andersen’s website because the cost of window replacement varies greatly based 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. Getting a free quote on its website is the best way to get more accurate information.

Aeroseal Windows
Many years of experience
Great industry reputation
Low number of customer complaints
Manufactures products in-house
Custom Designs
No lifetime warranty
Not ideal for residential installations
Aeroseal Windows has the best window installation for businesses in Decatur. It's an installer that mainly serves commercial and multifamily properties, and also specializes in railings. If you’re looking for residential window installations, you should probably refer to one of the other companies on this list. Aeroseal has been in the window industry for about 23 years. The company has hundreds of glowing reviews from customers on online review websites.
It installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsAeroseal Windows is an Energy Star partner with a variety of energy-efficient windows. 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 Aeroseal representative when inquiring about services.
How much does Aeroseal Windows cost in Decatur?Prices are not available on Aeroseal’s website because the cost of window replacement varies greatly based on how many and what type(s) of windows you need. However, it provides high-quality windows at a competitive price point. Getting a free quote on its website is the best way to get more accurate information.
One thing to note is that the following companies are national, meaning the quality of customer service may depend on your local crew. We have tried to be unbiased and transparent by including both pros and cons for every company.
More Window Companies in Decatur
Renewal by Andersen of Atlanta
Norcross, GAPrice Transparency
Good Customer Service
Free assessment
Educational Website
Services Offered
Skylights
Window Replacement/Installation
Bay Windows
Glass Doors
Double-Hung
Champion Replacement Windows of Atlanta
Atlanta, GAPrice Transparency
Good Customer Service
Free assessment
Services Offered
Glass Doors
Double-Hung
Bay Windows
Window Replacement/Installation
Power Home Remodeling
Norcross, GAGood Customer Service
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Window Nation
Norcross, GAGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Bay Windows
Energy-Efficient Options
Window Replacement/Installation
Double-Hung
Custom Window Designs
Glass Doors
Mighty Dog Roofing
Doraville, GAGood Customer Service
Price Transparency
Free assessment
Timely Service
Services Offered
Window Repair
Skylights
Window Replacement/Installation
A&E Glass Repair ,LLC
Atlanta, GAFree assessment
Price Transparency
Good Customer Service
Services Offered
Glass Repair
Glass Showers
Mirrors
Window Repair
Window Replacement/Installation
Glass Doors
Energy-Efficient Options
Goran's Home Repair inc
Marietta, GAFree assessment
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Window Repair
Hang and Maintain Vinyl Siding & Windows
Forsyth, GATimely Service
Price Transparency
Free assessment
Good Customer Service
Services Offered
Glass Doors
Window Replacement/Installation
Quinn Windows
Tucker, GAFree assessment
Price Transparency
Timely Service
Educational Website
Good Customer Service
Services Offered
Window Replacement/Installation
Vinyl Frames
Custom Window Designs
Double-Hung
Glass Doors
Glass Doctor of Atlanta
Norcross, GAEducational Website
Good Customer Service
Price Transparency
Services Offered
Window Repair
Glass Showers
Energy-Efficient Options
Custom Glass
Glass Repair
Mirrors
Window Replacement/Installation
Glass Doors
Chattahoochee Windows and Doors
Smyrna, GAGood Customer Service
Educational Website
Free assessment
Price Transparency
Services Offered
Double-Hung
Window Replacement/Installation
Glass Doors
Bay Windows
Mr. Handyman of Roswell, Alpharetta and Cumming
Roswell, GAGood Customer Service
Free assessment
Price Transparency
Educational Website
Timely Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Glass Showers
Mirrors
Window Repair
North Georgia Replacement Windows
Alpharetta, GAFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Custom Window Designs
Double-Hung
Window Replacement/Installation
Bay Windows
Fiberglass Frames
Glass Doors
Rooftops Unlimited
Fayetteville, GAPrice Transparency
Good Customer Service
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Pinnacle Window & Siding of Woodstock, GA
Woodstock, GATimely Service
Good Customer Service
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Sentinel Exteriors
Woodstock, GAGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Keystone Siding & Windows
Cumming, GAEducational Website
Good Customer Service
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
Georgia Glass Repair
Cumming, GAEducational Website
Price Transparency
Good Customer Service
Free assessment
Services Offered
Glass Repair
Mirrors
Window Repair
Energy-Efficient Options
Window Replacement/Installation
Glass Doors
PGRS: Professional Grade Roofing and Siding
Peachtree City, GAPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Vinyl Frames
Freedom Glass and Mirror
Bethlehem, GAEducational Website
Free assessment
Services Offered
Window Replacement/Installation
Glass Repair
Glass Showers
Mirrors
Calculate how much you can expect to pay for window installation and replacement in Decatur, GA 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 Decatur Saves You Money
Energy-efficient windows can offer benefits in several ways. Here are a few reasons you may want to consider making the switch:
- Save money on power bills: Because energy-efficient windows decrease how much energy you need to heat or cool your home, they can help you save around $362 annually on your energy bills in Decatur.
- Reduce your carbon footprint: Because energy-efficient windows improve the insulation in your home, you can lower your indirect greenhouse gas emissions by about 12%, according to Energy Star.
- Protect your valuables from fading: The low-emissivity coatings on some energy-efficient windows filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
- Protect your investment: If your home is on the older side, your windows are most likely in need of replacement. Updating your windows can improve the insulation in your home and also help increase the value of your house if you decide to sell.
Estimated Cost of Window Replacement in Decatur
Each window installer offers various services and has varying costs based on several factors.
How Much Do New Windows Cost?
On average, Decatur homeowners can anticipate their window replacements to range from $250 to $1,200. The most common installations sit at approximately $600. These numbers vary based on the specifics of your installation, such as size, material, the location of your home, number of windows, type and more.
With windows, efficiency is one of the most important factors for most homeowners. Efficient windows may cost more upfront, but by increasing the efficiency of your home — especially if you live in a hot climate — they can give you decades of energy savings. According to Energy Star, buying certified energy-efficient windows can save Decatur homeowners $362+ per year after replacing single-pane windows.
Costs will also vary depending on the material of your frame. Aluminum frames have the lowest price. They’re sturdy, light and easy to maintain, but provide poor insulation. Vinyl frames are a bit more expensive and offer 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 offer decent insulation for your home.
What Services do Window Installers Offer?
The first thing to ask yourself when planning to replace your windows is: Should you get a full-frame installation or a pocket installation?
Full-frame installations involve replacing the full window — the sill, frame, trim and all. These are most common when you want to change the style of your window or when it has significant deterioration. Full-frame installations are more time-consuming and will increase overall costs. Pocket installations (or retrofits) entail installing a new window within its existing frame, which makes pocket installations more simple and affordable. However, if the frame has any damage or rot, you will most likely need a full-frame installation instead.
Your window installer should be able to help you choose 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
Best Energy-Efficient Features
Champion
- Many years of experience
- Low prices relative to competitors
- Limetime warranty
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
How We Choose the Best Window Installers in Decatur
In our search to make your home improvements easier and more eco-friendly in Decatur, the EcoWatch team evaluated many companies before landing on these. We have evaluated the best window replacement companies in Decatur mainly based on their energy efficient offerings, as the most sustainable option also benefits homeowners in many ways. Energy-efficient windows have been shown to lower electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology is based on the following factors:
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 the best window installation company near you.
Work Quality
When picking new windows, the quality and variety of services often plays just as important of a role in insulation and performance as the brand of window you get. 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 patterns in recent online reviews to determine the companies with the most 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 nearly every category, including warranty, quality of installation, cost, quality of parts, professionalism and more.
Cost
This one is a give-and-take: similar to other services, cheap window companies may not provide the most quality service. On the other hand, we want to ensure we’re highlighting companies that provide a range of price and financing options so they’re accessible to most homeowners.
Warranty
Protecting your investment in new windows is important. For that reason, window installation companies that offer lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Due to Decatur’s climate, homeowners need to be wary of rot, low efficiency and water damage. We factored in local experience to reflect the ability of Decatur window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.
Decatur, GA Window Replacement FAQs
What is the average cost to install windows?
The national average cost of replacing a single window is about $600 but can range from $200 to $1,200, based on a few different factors. The price is generally dependent on the size of the window, the location of your property and the type and material of the window. Also, bear in mind that energy-efficient windows may cost more upfront but can save you a decent amount of money a year in energy bills.
What type of window is the most energy-efficient?
Generally, double-pane windows will be more efficient than single-pane windows and windows that do not open are more efficient than windows that do. If you want to be sure you’ll get the most energy-efficient windows, look for models that have the blue Energy Star certification — this means they’re certified energy-efficient by the U.S. Department of Energy.
What do window installation companies do?
Window installers travel to your home to remove your old windows and replace them with new ones. Some companies install products sold by other companies, whereas others are both manufacturers and installation companies combined. The installer will also clean up after the installation is complete.
Should I replace all my windows at the same time?
If your windows are more than 20 years old, you most likely need to replace all of them. At that point, they are typically less efficient, draftier and/or more damaged than new windows. Replacing your windows all at once will involve less paperwork and less stress.
How long does it usually take to install windows?
Since the average installation time is 30 minutes per window, about 16 windows can be installed in an 8-hour work day.