11 Best Window Replacement Companies in Union, SC (Mar 2023)
Window Companies Near Me
Thinking about improving your house's energy efficiency? The top window replacement companies can help.
We analyzed all the top window installers in Union and selected the top 11 based on:
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Customer reviews
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Window replacement expertise
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Popularity with home-owners like you
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Updated March 14, 2023
Why you can trust EcoWatch
Whether you're doing home renovations or have old windows, windows play a vital role in conserving your home's electricity. When it's the middle of summer, your outdated and drafty windows could be making your home harder to cool and more uncomfortable for you.
Luckily, saving you energy with more efficient windows also aligns with our goals of conserving energy and the resources it takes to generate it.
Because windows are so important for your home, selecting the right company for you is a big choice to make. That's why the EcoWatch team has created this list of the top window installation companies, so you can more easily make an informed decision.
Best Affordability
Window World
- Great industry reputation
- Lifetime warranty
- Low prices relative to competitors
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Member of US Green Building Council
- Award-winning company
- Great industry reputation
- No lifetime warranty
Best Warranty
Universal Windows Direct
- Lifetime warranty
- Manufactures products in-house
- Wide variety of products and services
- Some installations carried out by third-party contractors
Best Window Replacement Companies in Union
The EcoWatch Reviews team researched dozens of installers across the country to find the top window replacement companies for our readers. The installers in this article scored best in our review categories, which include energy-efficient offerings, price, availability, customer service, local expertise and more.

Window World
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Great industry reputation
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Lifetime warranty
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Low prices relative to competitors
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Quality of service will depend on your area
Window World provides windows expertise in Union. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has about 27 years of industry experience, and it currently serves 200 locations nationwide. Its reputation is backed by several positive reviews on customer review websites.
Window World may be the company for you if you want one 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 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 Union?Prices aren't displayed on Window World's website, but it's known for offering some of the most affordable window installations around. For more accurate information on the cost, you can ask for a quote from the company.

Renewal by Andersen
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Member of US Green Building Council
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Award-winning company
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Great industry reputation
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No lifetime warranty
Renewal by Andersen provides the best availability in Union. This window installation company has been operating since 1995 and currently services nearly every state except Mississippi and West Virginia.
Andersen may be the company for you if you're looking for one 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 appeals to eco-conscious consumers by providing 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 Union?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 ask for a free quote on its website for more information about the cost.

Universal Windows Direct
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Lifetime warranty
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Manufactures products in-house
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Wide variety of products and services
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Some installations carried out by third-party contractors
Universal Windows Direct is a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. This company has been in business since 2002 and currently serves 27 states nationwide. Many positive reviews from customers online back the company's reputation.
It has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsUniversal Windows Direct 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 be sure to ask your Universal representative when inquiring about services.
How much does Universal Windows Direct cost in Union?While prices are not readily available on Universal's website, installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. You can ask for a free quote on its website for more information about the cost.
We strive to stay unbiased and transparent by listing pros and cons for every company. Additionally, any partnerships do not influence our reviews.
More Window Replacement Companies in Union
Renewal by Andersen Window Replacement
Duncan, SC-
No-Hassle Pricing
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No-fee Quotes
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Consistent Workmanship
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Good Customer Service
Services Offered
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Architectural Glass
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Energy-Efficient Options
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Custom Window Designs
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Aluminum Window Frames
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Full-Service Installations
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
The Window Source of Upstate SC
Clinton, SC-
No-fee Quotes
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Reliable Appointment Windows
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Reliable Service
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Helps Educate Customers
Services Offered
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Custom Window Designs
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Architectural Glass
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Sliding Glass
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Double-Hung
Screenmobile of the Piedmont
Moore, SC-
Excellent Customer Service
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Consistent Workmanship
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Price Transparency
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Locally Recognized for Quality
Services Offered
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Custom Window Designs
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Sliding Glass
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Double-Hung
Carolina Glass & Storefront Systems, LLC
Spartanburg, SC-
Helps Educate Customers
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Good Customer Service
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Price Transparency
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No-fee Quotes
Services Offered
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Residential Windows
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Fast Delivery
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Custom Window Designs
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Business Windows
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Sliding Glass
Windows Siding Gutters of the Carolinas LLC
Gaffney, SC-
Excellent Customer Service
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Award-Winning
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No-fee Quotes
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Educational Website
Services Offered
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Custom Windows
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Double-Hung
Gwinn's Siding & Window Co. #2 Inc.
Laurens, SC-
Educational Website
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Price Transparency
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Dependable Service
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No-fee Quotes
Services Offered
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Custom Windows
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Residential Windows
Carolina Roofing Siding and Window LLC
Moore, SC-
No-Hassle Pricing
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No-fee Quotes
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Excellent Customer Service
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Helps Educate Customers
Services Offered
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Business Windows
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Full-Service Installations
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Custom Windows
ProTech Tinting
Boiling Springs, SC-
Helps Educate Customers
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Excellent Customer Service
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No-Hassle Pricing
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Free Quotes
Services Offered
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Custom Window Designs
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Residential Windows
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Business Windows
United Glass Services
Newberry, SC-
Good Customer Service
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Free Quotes
Services Offered
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Residential Windows
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Tempered Glass
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Custom Window Designs
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Commercial Windows
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Double-Hung
Spartanburg Siding & Window Co
Moore, SC-
Helps Educate Customers
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Free Quotes
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Price Transparency
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Good Customer Service
Services Offered
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Custom Windows
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Energy-Efficient Options
Neely's Windows Doors & More
Spartanburg, SCServices Offered
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Residential Windows
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Architectural Glass
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Fast Delivery
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Energy-Efficient Options
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Custom Windows
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Commercial Windows
How Installing Energy-Efficient Windows in Union Saves You Money
By upgrading to energy-efficient windows, you can enjoy several benefits, such as:
- Decrease your carbon footprint: Decreasing the amount of energy you use also lowers your carbon emissions. You could reduce it by about 415 pounds.
- Save money on electricity bills: Because energy-efficient windows decrease how much energy you need to heat or cool your home, the switch can help you save about $391 annually on your energy bills in Union.
- 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.
- Protect your investment: If your home is on the older side, your windows are most likely outdated. Upgrading your windows can make your home more comfortable and also help increase the value of your house if you decide to sell.
Estimated Cost of Window Replacement in Union
Windows come in different purposes, shapes and styles, so costs and services will vary remarkably based on several factors. Below, we go over the typical cost and services that you'll find from window replacement companies.
How Much Do New Windows Cost?
According to our research, the average cost to replace a single window is about $600. However, window replacement costs can range from $200 to $1,200 a window. But prices differ considerably based on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window companies also offer door installations, which will make your project cost more.
With windows, efficiency is the most important factor for many 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 Union homeowners $391+ 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 offer poor insulation. Vinyl frames are somewhat expensive and offer good insulation. Composite frames made with wood fibers encased in plastic also offer 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?
In regard to window installations, in general there are two kinds that your installer will offer: full-frame and pocket installations.
Full-frame installations entail replacing the full window, including the frame, trim and sill. You most likely need a full-frame installation when you want to change the style of your windows or your window has significant damage. Full-frame installations are more involved and will increase overall costs. A pocket installation involves replacing a window within the existing frame, which tends to be cheaper than a full-frame installation.
Your window replacement company will be able to help you choose what's best for your needs. In Union, the decision will mostly depend on how old your home is and if there's any damage. Wood can decay if it's not properly maintained over the years, so it's good to have a professional examine your frames and window sills.
Best Affordability
Window World
- Great industry reputation
- Lifetime warranty
- Low prices relative to competitors
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Member of US Green Building Council
- Award-winning company
- Great industry reputation
- No lifetime warranty
Best Warranty
Universal Windows Direct
- Lifetime warranty
- Manufactures products in-house
- Wide variety of products and services
- Some installations carried out by third-party contractors
How We Choose the Best Window Installers in Union
In our hunt to find the most reliable, eco-friendly window installers in Union, EcoWatch chose the above companies as the best window installation companies in the city. Along with energy efficiency, we evaluated window companies all across the state and assigned rankings based on the following methodology:
Service Area
Because this is a guide for Union, we only included 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 Union.
Work Quality
We're willing to bet that you're looking for professionals who do a great job installing windows. We've vetted each company featured on this list to make sure its contractors are well-qualified and that the company has received lots of positive customer feedback to vouch for its service.
Customer Reviews
Customer feedback is another very important review factor. If the majority of customers don't have nice things to say about their experience with a certain installer, you won't see it featured on EcoWatch.
Cost
Cheaper windows don't necessarily mean better windows, but we know many of our readers would like to keep costs low when possible. When analyzing providers' prices, we gave higher scores to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
Protecting your investment in new windows is important to many homeowners. For that reason, window installation companies that give you lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Because of Union's climate, homeowners will want to mitigate rot, water damage and low efficiency. We factored in local experience to reflect the ability of Union window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Union, SC Window Replacement FAQs
What is the average 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, depending on a few different factors. The price is often 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 different types of windows?
The most common kinds of windows for homes include: bay windows, slider windows, double-hung and single-hung windows, transom windows, picture windows, awning windows and casement windows.
Can I install my own windows?
Even though it is possible to install your own windows, doing so is time-consuming and requires a lot of handiness. Hiring a professional can help ensure that the installation is done properly and that you won't have to spend the time and effort to do it yourself.
What time of year is the best time to replace my windows?
Replacement windows can be installed during any season, but warmer weather is typically better. No matter when you install them, the contractors will take steps to ensure that too much hot or cold air doesn't get into the house, so the temperature outside doesn't necessarily matter that much. Most importantly, the weather should be dry.
Should I replace all my windows at the same time?
If you're upgrading your windows because of energy-efficiency, replacing all of the windows at once is the only way to gain that benefit. However, if you have only a few windows that are broken or drafty, you can replace just those.