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

How Installing Energy-Efficient Windows in Danville Saves You Money

By upgrading to energy-efficient windows, you and your family can enjoy several benefits, including:

• Protect your investment: When your home is on the older side, your windows could also be outdated or drafty. Keeping your windows up to date is an important part of maintaining your property and its value.
• Save on electricity bills: According to the Department of Energy, heat gained or lost through windows makes up about 25-30% of residential energy use. Installing energy-efficient models can help lower that number, therefore saving you about 12% more on your bills.
• Decrease your carbon footprint: Since energy-efficient windows improve the insulation in your home, you can cut your indirect greenhouse gas emissions by about 12%, according to Energy Star.
• 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 Danville

Windows come in varying shapes and sizes, so costs and services will differ remarkably. Here are the average costs and services that you can find from window installers.

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 per window. Costs will differ considerably depending on the current condition of your home, your location, the number of windows you need and the quality of your products. Many window companies also offer replacement door installations and other add-ons like coating, baths, shutters and more. Additional services will increase your overall project costs.

It’s also worth keeping in mind that energy-efficient windows will cost more upfront, but Energy Star predicts that switching out the windows on your Danville home can mean an average energy savings of $236 to $319 each year for single-pane window replacement, or between $87 to $126 each year for double-pane windows. How much you’ll save by upgrading to energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.

Asking for free quotes from several providers is the best way to find out which one will work best for your budget.

What Services do Window Installers Offer?

The first step when planning an installation is to decide whether you should get a full-frame or pocket installation.

Full-frame installations involve replacing the complete window, including the trim, frame and sill. Full-frame installations are necessary when you want to change the style of your windows or your window has significant rot. Because these installations are more involved, they will raise overall costs. Pocket installations are on the simpler end and won’t carry as large a bill because they involve simply replacing the window within its existing frame. But if the frame has any damage or rot, you should opt for a full-frame installation instead.

If you’re still debating which kind of installation you should get, you can talk to your installer and get their recommendation. The choice mostly is influenced by how old the frames are and if there’s any damage.

How We Choose the Best Window Installers in Danville

In our hunt to find the most reliable, eco-friendly window installers in Danville, the EcoWatch team assessed dozens of companies before landing on these. We have reviewed the best window replacement companies in Danville mainly based on energy efficiency, as the most sustainable option also benefits homeowners in many ways. Energy Star certified windows can cut your energy 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 installation companies that serve the Danville area so you can find the best window installation company near you.

Work Quality

We’re certain that you’re looking for a company to do a great job installing windows. We’ve vetted each company featured in our guide to make sure its technicians are well-qualified and that the company has gotten a lot of positive customer feedback to vouch for its service.

Customer Reviews

We analyzed patterns in recent online reviews to find the companies with the most customer satisfaction, weighted by sample size. Customer satisfaction may be the most important factor, as it indicates the quality of services across most other categories, including warranty, quality of installation, quality of parts, professionalism, cost and more.

Cost

This one is a give-and-take: similar to most services, cheap window companies may not provide the most quality service. On the other hand, we want to make sure we’re highlighting companies that offer a variety 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 with lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

Due to Danville’s climate, homeowners will want to mitigate low efficiency, rot and water damage. We factored in local experience to reflect the ability of Danville window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.