20 Best Window Companies in Knightdale, NC (2025 Reviews)
If you’re looking to upgrade to new windows, our guide to the top window installation companies can help.
We analyzed all the top-rated window companies in Knightdale 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
Although environmentally friendly energy sources like wind and solar are important when it comes to decreasing your carbon footprint, improving your home’s energy efficiency can also have a large impact on home energy conservation. If your windows are outdated or damaged, you could be sending 25-30% of your house’s heat or cool air right out of them.
Installing upgraded, efficient windows on your property can help you save money each month on your electric bills — and you can help the environment, too.
So if you’re building a new home, renovating or updating your windows in Knightdale, this guide is the best place to get started.
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 Knightdale
The EcoWatch Reviews team examined dozens of window installation companies in Knightdale to find the best ones for our readers. The installers we’ve mentioned in this article passed our review standards for energy-efficient offerings as well as local expertise, price, customer service and beyond.

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 provides windows expertise in Knightdale. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This provider has 27 years of experience in the window installation industry, and it has established itself as one of the most reputable companies in Knightdale. Its reputation is backed by several positive reviews on customer review websites.
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 provider for you.
Energy Efficiency of Window World WindowsIts high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home. Not all of Window World’s offerings are Energy Star certified, so be sure to mention that you’re interested in Energy Star windows when inquiring.
How much does Window World cost in Knightdale?Though pricing information is not readily available on Window World’s website, 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 know for sure.

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 provides the best availability in Knightdale. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This provider has 27 years of experience in the window installation industry, and it has established itself as one of the most reputable companies in Knightdale. Its reputation is backed by several positive reviews on customer review websites.
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 provider for you.
Energy Efficiency of Renewal by Andersen WindowsA 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. Not all of Andersen’s offerings are Energy Star certified, so be sure to mention that you’re interested in Energy Star windows when inquiring.
How much does Renewal by Andersen cost in Knightdale?Though pricing information is not readily available on Andersen’s website, 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 know for sure.

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 provides the best window installation for businesses in Knightdale. 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. This provider has 23 years of experience in the window installation industry, and it has established itself as one of the most reputable companies in Knightdale. Its reputation is backed by several positive reviews on customer review websites.
If you’re looking for a company that installs windows and doors at businesses across the Eastern U.S, Aeroseal may be the right provider for you.
Energy Efficiency of Aeroseal Windows WindowsThe 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. Not all of Aeroseal’s offerings are Energy Star certified, so be sure to mention that you’re interested in Energy Star windows when inquiring.
How much does Aeroseal Windows cost in Knightdale?Though pricing information is not readily available on Aeroseal’s website, it provides high-quality windows at a competitive price point. Requesting a free quote on its website is the best way to know for sure.

Window Nation
Award-winning company
Manufactures products in-house
Custom designs
Wide variety of products and services
Installation not covered by warranty
Limited service area
Window Nation provides the best residential windows in Knightdale. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. This provider has 16 years of experience in the window installation industry, and it has established itself as one of the most reputable companies in Knightdale. Its reputation is backed by several positive reviews on customer review websites.
If you’re looking for a company that gives customers the opportunity to view products and to speak to a representative in person in its showrooms, Window Nation may be the right provider for you.
Energy Efficiency of Window Nation WindowsEach product has windowpanes coated with a Low-E (low emissivity) glaze that prevents damaging UV rays from heating your home. Plus, the spaces between double- and triple-pane windows are filled with argon gas that’s been proven to improve home insulation. Not all of Window Nation’s offerings are Energy Star certified, so be sure to mention that you’re interested in Energy Star windows when inquiring.
How much does Window Nation cost in Knightdale?Though pricing information is not readily available on Window Nation’s website, based on customer feedback, you can expect to pay between $300 and $525 per window installed, making it a more affordable option compared to competitors. Requesting a free quote on its website is the best way to know for sure.
We have tried to remain unbiased and transparent by including pros and cons for every provider. Additionally, any partnerships do not influence our reviews.
More Window Companies in Knightdale
Renewal by Andersen
Garner, NCGood Customer Service
Free assessment
Educational Website
Services Offered
Glass Doors
Bay Windows
Storm/Impact Windows
Energy-Efficient Options
Window Replacement/Installation
Double-Hung
Custom Window Designs
Champion Replacement Windows of Raleigh
Durham, NCGood Customer Service
Price Transparency
Free assessment
Services Offered
Glass Doors
Window Replacement/Installation
Bay Windows
Double-Hung
Window Nation
Raleigh, NCPrice Transparency
Good Customer Service
Free assessment
Educational Website
Services Offered
Bay Windows
Glass Doors
Custom Window Designs
Energy-Efficient Options
Double-Hung
Window Replacement/Installation
Goliath Roofing Inc
Knightdale, NCGood Customer Service
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
Early Bird Glass inc
Raleigh, NCGood Customer Service
Price Transparency
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Custom Glass
Mirrors
Glass Showers
Glass Doors
Window Depot USA of Raleigh NC
Raleigh, NCPrice Transparency
Timely Service
Free assessment
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Triple Pane Glass
Bay Windows
Vinyl Frames
Energy-Efficient Options
Double-Hung
Glass Doors
Raleigh Windows and Siding, LLC
Raleigh, NCPrice Transparency
Educational Website
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Glass Showers
AJT Construction, Inc.
Raleigh, NCPrice Transparency
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Glass Doors
Oak City Roofing
Cary, NCGood Customer Service
Free assessment
Price Transparency
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Vinyl Frames
Skylights
Kelly Window and Door, Inc.
Cary, NCFree assessment
Price Transparency
Educational Website
Good Customer Service
Services Offered
Bay Windows
Vinyl Frames
Wood Frames
Double-Hung
Window Replacement/Installation
Glass Doors
Snover Contracting
Benson, NCPrice Transparency
Free assessment
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Energy-Efficient Options
West Shore Home
Raleigh, NCFree assessment
Good Customer Service
Price Transparency
Educational Website
Services Offered
Energy-Efficient Options
Glass Doors
Window Replacement/Installation
Glass Showers
Double-Hung
Custom Window Designs
Bay Windows
NC Siding and Windows, Inc.
Raleigh, NCGood Customer Service
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Vinyl Frames
Energy-Efficient Options
Glass Solutions
Garner, NCEducational Website
Free assessment
Good Customer Service
Price Transparency
Services Offered
Glass Repair
Window Repair
Window Replacement/Installation
Custom Glass
Glass Showers
Glass Doctor of Raleigh
Raleigh, NCPrice Transparency
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Window Repair
Custom Glass
Mirrors
Glass Showers
Glass Repair
Skylights
City Mirror & Glass, Inc.
Cary, NCGood Customer Service
Educational Website
Free assessment
Services Offered
Window Repair
Glass Showers
Mirrors
Window Replacement/Installation
Glass Repair
Custom Glass
My Guys Remodeling
Apex, NCFree assessment
Good Customer Service
Educational Website
Price Transparency
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Glass Doctor of Central Carolina
Dunn, NCGood Customer Service
Price Transparency
Free assessment
Educational Website
Services Offered
Glass Showers
Mirrors
Energy-Efficient Options
Window Repair
Window Replacement/Installation
Glass Repair
Custom Glass
Rice's Glass Company
Carrboro, NCPrice Transparency
Free assessment
Services Offered
Glass Showers
Window Replacement/Installation
Energy-Efficient Options
Glass Doors
Mirrors
Tempered Glass
Window World of Fayetteville
Spring Lake, NCGood Customer Service
Educational Website
Price Transparency
Free assessment
Services Offered
Double-Hung
Bay Windows
Window Replacement/Installation
Glass Doors
Calculate how much you can expect to pay for window installation and replacement in Knightdale, NC 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 Knightdale Saves You Money
When you upgrade to energy-efficient windows, you may see some benefits, such as:
- Protect your investment: If your home is on the older side, your windows are most likely in need of replacement. Upgrading your windows can make your home more comfortable and also help raise the value of your house if you decide to sell.
- Decrease your carbon footprint: By using less energy once switching to Energy Star certified windows, you’ll also be decreasing your indirect greenhouse gas emissions by about 12%, according to Energy Star.
- Protect your valuables: The low-emissivity coatings on many Energy Star certified windows help prevent your floors, carpets and furniture from fading by filtering out UV rays.
- Save on electricity bills: According to the Department of Energy, heat gained or lost through windows accounts for around 25-30% of household energy use. Upgrading to energy-efficient models can help lower how much energy is used in your home, therefore saving you about 12% more on your bills.
Estimated Cost of Window Replacement in Knightdale
Let’s take a look at the cost of installing new windows and the kinds of services you may need for your home.
How Much Do New Windows Cost?
Typically, homeowners in Knightdale can anticipate that most replacement window installations will range from $250 to $1,200, with the average cost at around $600. These estimates vary depending on specific characteristics of your installation, including number of windows, the location of your home, type, size, material and more.
Whether or not you want to install energy-efficient windows is another factor that will affect the cost. These will almost always cost more than other windows, but on the other hand, you can save about $360 a year on your energy bills in Knightdale.
How much your window installation costs will also vary depending on the kind of window material you choose for the frames. Wood windows are generally the most expensive, though it depends on whether they are solid wood or clad with aluminum or vinyl. Fiberglass windows also tend to be a bit more expensive than vinyl, but they are more efficient.
What Services do Window Installers Offer?
In general, there are two kinds of window replacement services companies provide: full-frame and pocket installations.
Full-frame installations entail replacing the complete window, including the trim, frame and sill. Full-frame installations are necessary when you want a new style or your window has noticeable damage. These installations are more involved and will increase the total cost. Pocket installations are simpler and won’t cost as much, as they involve merely replacing the window within its existing frame. But if the frame has any damage or deterioration, you should opt for a full-frame installation instead.
If you’re not sure which type of window installation service you should get, your installer should be able to assist you. Typically, the choice is based on factors such as the age and condition of the home, the type of building material, budget and time restrictions.
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 Knightdale
EcoWatch reviews differ from other reviews since we evaluate these companies through a sustainability lens. We have reviewed the best window installers in Knightdale mostly based on their energy efficient offerings, as it’s the most sustainable option and the best one for homeowners. Energy-efficient windows can cut your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:
Service Area
Because this is a guide for Knightdale, we paid more attention to companies that serve the city. There are certainly reputable providers that didn’t make our list because of the low odds that they would serve the average homeowner in Knightdale.
Work Quality
When picking new windows, the quality and breadth of services often plays just as important of a role in overall efficiency and performance as the brand you opt for. We do rate window installers higher if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.
Customer Reviews
We analyzed patterns in recent customer feedback to determine the companies with the most consistent customer satisfaction, weighted by sample size. Customer satisfaction might be the factor we place the most value on, as it indicates the quality of services across nearly every category, including warranty, professionalism, quality of installation, quality of parts, cost 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 awarded higher points to companies with reasonable prices and accessible financing rather than “cheaper” services.
Warranty
Protecting your investment in new windows is important. That’s why window installation companies that have lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Last but not least, we like to see companies that have a proven track record in the industry. Window installers that have more experience will earn higher rankings by our standards. We like to see at least ten years of experience.
Knightdale, NC Window Replacement FAQs
What is the average cost to install new windows in a home?
The average cost to replace one window ranges from $450 to $650. There are a variety of factors that influence how much it costs, including styles and sizes of windows, the materials used in designing the windows, the number of windows, your property’s location, how energy-efficient the windows are and local labor costs.
What are the types of windows?
There are several different kinds of windows you can get for your house, including picture windows, transom windows, awning windows, slider windows, casement windows, double-hung and single-hung windows and bay windows.
Do you really have to use a window installation company?
You should use a window installation professional whenever you need to replace your windows. Installing windows is a complicated process that can be difficult to do on your own, so it’s best left to the professionals.
What time of year is a good time to replace my windows?
Even though you can install windows any time of year, warmer weather is generally better for installing replacement windows. Additionally, it shouldn’t be raining, since rain can make the installation more difficult.