20 Best Window Companies in St. Andrews, SC (2025 Reviews)

How Installing Energy-Efficient Windows in St. Andrews Saves You Money

Switching to energy-efficient windows can improve the comfort of your home and help you save on energy bills. Here are more ways upgrading your windows could benefit you:

• Save on electricity bills: Since energy-efficient windows decrease how much energy you need to heat or cool your home, they can help you save about $401 annually on your energy bills in St. Andrews.
• Protect your investment: When your home is on the older side, your windows could also be outdated or damaged. Upgrading your windows is an important part of maintaining your property and its real estate value.
• Decrease your carbon footprint: Decreasing how much energy you use also lowers your indirect greenhouse gas emissions. You could reduce it by about 357 pounds.
• Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out harmful UV rays, reducing fading of your furniture, carpet and other valuables.

Estimated Cost of Window Replacement in St. Andrews

Let’s take a look at the cost of replacing your windows and the kinds of services offered by installers.

How Much Do New Windows Cost?

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

Bear in mind that energy-efficient windows may have a higher price, but Energy Star estimates the upgrade will save you between $101 and $583 a year when you replace single-pane windows and between $27 and $197 a year when installing double-pane, clear glass windows. Your savings will vary depending on your local climate, energy rates and individual home characteristics.

The cost of your window installation will also vary based on the kind of material you choose for the frames. Wood windows are typically the most expensive, although it depends on whether they are 100% wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are more efficient.

What Services do Window Installers Offer?

The first thing to ask yourself when planning a window installation is: Should you get a full-frame installation or a pocket installation?

Full-frame installations entail replacing the total window, including the frame, sill and trim. Full-frame installations are necessary when you want to change the style of your windows or your window has considerable rot or deterioration. Because these installations are more involved, they will increase the total cost. A pocket installation involves replacing a window without replacing the frame. So, instead of removing the whole window and rebuilding it, the window installer will just slide the replacement window (also called a retrofit or insert window) into the frame.

If you’re not sure which type of window installation service you need, your installer should be able to help you out. In general, the decision depends on factors such as the age and condition of the home, the type of building material, budget and time restrictions.

How We Choose the Best Window Installers in St. Andrews

In our hunt to find the most reliable, eco-friendly window installers in St. Andrews, the EcoWatch Reviews team landed on the above companies as the top window installation companies in the city. We have assessed the best window installation companies in St. Andrews mostly based on energy efficiency, as the most sustainable option also benefits homeowners in many ways. Energy Star certified windows can reduce your power bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

Service Area

This one is pretty self-explanatory, but we’ve chosen to highlight window installers that serve a wide variety of states and cities so you can find the best window installation company near you.

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 in our guide to ensure its technicians are well-qualified and that the company has gotten lots of positive customer feedback to vouch for its service.

Customer Reviews

Customer feedback is another very important review factor. If most customers don’t have good things to say about their experience with a certain company, it won’t be featured on EcoWatch.

Cost

Cheaper windows certainly don’t mean better windows, but we know many of our readers try to keep costs as low as 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. That’s why window installation companies that have lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

Lastly, we like to see companies that have been in the industry for quite some time. Window installers that have more years of experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.