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

How Installing Energy-Efficient Windows in Gilroy Saves You Money

Energy-efficient windows can benefit you in several ways. Here are a few reasons you may want to consider making the switch:

• Save money on electricity bills: The Department of Energy estimates that heat gained or lost via windows accounts for about 25-30% of energy use in your home. Switching to energy-efficient windows can help reduce that amount, which helps you save more on your bills.
• Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out harmful UV rays, preventing fading of your furniture, carpet and other valuables.
• Reduce your carbon footprint: In Gilroy, you can lower your indirect greenhouse gas emissions by about 117 pounds per year once you install energy-efficient windows.
• Protect your investment: If you have an older home, your windows are most likely in need of replacement. Updating your windows can make your home more comfortable and also help raise the value of your home if you decide to sell.

Estimated Cost of Window Replacement in Gilroy

Windows come in different styles, shapes and purposes, so costs and services will differ greatly based on your project. Below, we describe the average cost and services that you’ll find from window replacement companies.

How Much Do New Windows Cost?

On average, Gilroy homeowners can expect their window replacements to range from $250 to $1,200. The average cost sits at about $600. How much it will cost varies depending on several factors, like size, material, type, number of windows, the location of your home and more.

It’s also worth noting that energy-efficient windows will almost always cost more initially, but Energy Star predicts that switching out the windows on your Gilroy home can mean an average energy savings of $236 to $319 per year for single-pane window replacement, or between $87 to $126 each year for double-pane windows. The amount of money you’ll save by installing energy-efficient windows depends on your local climate, energy rates and other factors unique to your home.

We advise getting free quotes from multiple window companies to find the one that works best for your budget.

What Services do Window Installers Offer?

There are generally two types of window replacement services: full-frame and pocket installations.

Full-frame installations are usually recommended when you want a new style or your window has a lot of rot or deterioration. With this service, your installers will replace the full window, including the sill, trim and frame. A pocket installation entails replacing a window without replacing the frame. This means instead of taking out the whole window and rebuilding it, the contractor will just put the replacement window (also called a retrofit or insert window) into the frame.

If you’re still trying to decide which type of installation you need, you can consult with your installer and get their recommendation. The decision mostly depends on the age of your window frames and if there’s any damage.

How We Choose the Best Window Installers in Gilroy

The EcoWatch Reviews team is different from other reviewers because we look at these companies through a sustainability lens. Along with energy efficiency, we reviewed each installer and ranked them using the following methodology:

Service Area

This one is pretty self-explanatory, but we’ve chosen to highlight window installation companies that serve the Gilroy area so you can find the best window installation company near you.

Work Quality

We’re certain that you’re not looking for a company to do a shoddy job installing windows. We’ve vetted each company included in our guide to make sure its contractors 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 positive things to say about their service from a certain company, you won’t see it featured on EcoWatch.

Cost

This one is a give-and-take: similar to most services, cheap window installation companies may not provide the most quality service. On the other hand, we want to make sure we’re highlighting companies that offer a range of price and financing options so they’re accessible to most homeowners.

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 been in the industry for a while. Window installers that have more experience earn higher rankings by our standards. We like to see at least ten years of experience.