20 Best Window Companies in Clemson, SC (2025 Reviews)

How Installing Energy-Efficient Windows in Clemson Saves You Money

Energy-efficient windows can offer benefits in more than one way. Here are a few reasons you may want to take the plunge and make the switch:

• Save money on energy bills: According to the Department of Energy, heat gained or lost through windows makes up around 25-30% of household energy use. Replacing your windows with energy-efficient models can help lower how much you have to pay, therefore saving you about 12% more on your bills.
• Protect your valuables from fading: The low-emissivity coatings on many energy-efficient windows filter out harmful UV rays, preventing your furniture, carpet and other valuables from fading.
• Protect your investment: If your home is on the older side, your windows are most likely outdated. Updating your windows can improve the insulation in your home and also help increase the value of your property if you decide to sell.
• Decrease your carbon footprint: By using less energy after switching to energy-efficient windows, you’ll also be lowering your carbon dioxide emissions by about 12%, according to Energy Star.

Estimated Cost of Window Replacement in Clemson

Windows come in various shapes and sizes, so costs and services will vary remarkably. Here are the typical costs and services that you’ll find from the average window installation company.

How Much Do New Windows Cost?

According to our market research, the average cost of installing a single window is around $600. However, window replacement costs can range from $200 to $1,200 for each window. But costs will vary significantly depending on the number of windows you need, the current condition of your home, the quality of your products and your location. A lot of window companies also offer replacement door installations and other add-ons like baths, shutters, coating and more. Additional services will increase overall project costs.

It’s important to note that windows with the best efficiency may cost more initially but can save you hundreds of dollars by lowering your energy bills. Investing in certified energy-efficient windows can save Clemson homeowners $363+ a year when replacing single-pane windows.

Another factor that influences the total cost is the material you pick for your frame. Aluminum frames are usually the least pricey and are sturdy and light, but they offer poor insulation. On the other hand, wood frames are the most expensive because they are aesthetically pleasing and provide decent insulation. Fiberglass and vinyl frames provide good insulation as well and cost somewhere between the other two.

What Services do Window Installers Offer?

Generally, there are two kinds of window replacement services companies offer: full-frame and pocket installations.

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 a great amount of deterioration. Full-frame installations are more time-consuming and will increase overall costs. A pocket installation means replacing a window within the existing frame, which is generally less expensive than a full-frame installation.

Your window installation company can help you choose which type of installation you should get.

How We Choose the Best Window Installers in Clemson

In our search to find the most reliable, eco-friendly window installers in Clemson, EcoWatch evaluated dozens of companies before deciding on these. Along with energy efficiency, we reviewed window companies all across the state and ranked them based on the following methodology:

Service Area

Because this is a guide for Clemson, we only included companies that serve the city. There are certainly other reputable providers that didn’t make our list because they wouldn’t be able to serve homeowners in Clemson.

Work Quality

When selecting new windows, the quality and variety of services can often play just as important of a role in insulation and performance as the type of window 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

Customer feedback is another super important review factor. If the majority of customers don’t have positive things to say about their service from 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 want to keep costs low when possible. When analyzing providers’ prices, we awarded higher points to companies with reasonable prices and accessible financing rather than “cheaper” services.

Warranty

As discussed previously, windows are a substantial investment, so you’ll want to make sure that investment is protected. Window installation companies that provide lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

Lastly, we like to see companies that have a good track record in the industry. Window installers that have more experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.