20 Best Window Companies in Glendora, CA (2025 Reviews)

How Installing Energy-Efficient Windows in Glendora Saves You Money

By switching to energy-efficient windows, you and your family can enjoy several benefits, such as:

• Decrease your carbon footprint: By using less energy after you upgrade to energy-efficient windows, you’ll also be lowering your indirect greenhouse gas emissions by about 12%, according to Energy Star.
• Protect your valuables: The low-emissivity coatings on many energy-efficient windows help prevent the fading of your floors, carpets and furniture by filtering out UV rays.
• Save money on electricity bills: Once you install energy-efficient windows, you can see a reduction in your bills by about 12% since you’ll require less energy to heat or cool your home.
• Protect your investment: The older your home is, the more likely it is that getting new windows will benefit you. Older homes tend to have windows that are outdated, leaky or maybe even damaged in some way. Upgrading your windows could help raise the value of your property if you decide to sell.

Estimated Cost of Window Replacement in Glendora

Windows come in all shapes and sizes, so costs and services will differ greatly. Here are the average costs and the primary services that you’ll find from window installers.

How Much Do New Windows Cost?

Even though the national average cost to install a single window is around $600, it can range anywhere from $200 to $1,200. These numbers vary depending on specific characteristics of your installation, including the location of your home, number of windows, type, size, material and more.

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

Getting free quotes from multiple installers is the best way to figure out which one is right for you.

What Services do Window Installers Offer?

Generally, there are two kinds of window installation services you can get: full-frame and pocket installations.

Full-frame installations involve 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 or rot. Because these installations are more involved, they will increase overall costs. A pocket installation involves installing a new window without replacing the frame. This means instead of tearing out the whole unit and rebuilding it, the installer will just slide the replacement window (also called a retrofit or insert window) into the frame.

If you’re unsure which type of window installation service you should get, your installer can assist you. Generally, the choice 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 Glendora

In our hunt to find the most reliable, eco-friendly window installers in Glendora, EcoWatch landed on the above companies as the best window installation companies in the city. We’ve assessed the best window installers in Glendora mostly based on energy efficiency, as it’s what’s best for the environment and for you as a homeowner. Energy-efficient windows have been shown to lower power bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

Service Area

Because this is a guide for Glendora, we only included companies that cover the city. There are other reputable providers that didn’t make the list because of the low odds that they would serve the average homeowner in Glendora.

Work Quality

We’re certain that you’re looking for professionals who do a great job installing windows. We’ve vetted each installer included in our guide to ensure its technicians are well-qualified and that the company has gotten tons of positive customer feedback to vouch for its service.

Customer Reviews

We analyzed patterns in recent customer feedback to determine the companies with the most consistent customer satisfaction. Customer satisfaction may be the most important factor, as it reflects the quality of services across nearly every category, including quality of parts, warranty, cost, quality of installation, professionalism and more.

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 gave higher points to companies with reasonable prices and accessible financing rather than “cheaper” services.

Warranty

Protecting your investment in new windows is important. For that reason, 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 been in the industry for a while. Window installers that have more years of experience will earn higher rankings by our standards. We like to see at least ten years of experience.