20 Best Window Companies in Danville, CA (2025 Reviews)
If you’re looking to upgrade to new windows, our list of the top window installation companies can help.
We analyzed all the top-rated window companies in Danville and selected the best 20 based on:
Customer reviews
Window installation expertise
Popularity with home-owners like you
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Why you can trust EcoWatch
A guide on the best window replacement companies in Danville may not seem like the most riveting article on the EcoWatch site, but trust us, windows impact your life more than you might think. Traditional or damaged windows could lead to having higher energy bills during the winter or summer months.
Replacement windows improve your home’s insulation, not only making you and your family more comfortable during the summer and winter, but also saving you money and helping the environment.
Because windows have such a large impact on your home, selecting the best company for you is a big decision to make. That’s why the EcoWatch team has made this list of the best window installation companies, so you can make an informed decision more easily.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
Best Window Installation & Replacement Companies in Danville
The EcoWatch Reviews team examined dozens of installers across the country to find the top window replacement companies for our readers. The providers in this article scored best in our review categories, such as energy-efficient offerings, availability, customer service, price, local expertise and more.

Window World
EnergyStar Partner
Large serice area
Low prices relative to competitors
Great industry reputation
Lifetime warranty
Quality of service will depend on your area
Window World provides windows expertise in Danville. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This company has 27 years of experience in the windows industry, and it has proved to be one of the most respected companies in Danville.
It has established itself as a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.
Energy Efficiency of Window World WindowsWindow World offers some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for Energy Star windows when inquiring. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.
How much does Window World cost in Danville?Window World does not display prices on its website, but it's known for offering some of the most affordable window installations around. Getting a free quote on its website is the best way to know for sure.

Milgard Windows & Doors
EnergyStar Partner
Wide network of installers
Lifetime warranty available
Entails hiring third-party contractors
Limited additional services
Milgard Windows & Doors provides the best local installation in Danville. It's a family-owned and -operated window replacement company, which primarily serves the West Coast. This company has 60 years of experience in the windows industry, and it has proved to be one of the most respected companies in Danville.
It has established itself as a company that offers competitive pricing, a comprehensive warranty and installers that all have a minimum of 15 years of window installation experience.
Energy Efficiency of Milgard Windows & Doors WindowsMilgard Windows & Doors offers some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for Energy Star windows when inquiring. The company manufactures its own products, which gives it the freedom to make custom windows based on the climate. The company designs its own vinyl compounds and profiles to ensure a heat-stable product that performs as advertised.
How much does Milgard Windows & Doors cost in Danville?Milgard does not display prices on its website, but it offers different kinds of windows at varying price points. Getting a free quote on its website is the best way to know for sure.

Renewal by Andersen
Great industry reputation
Award-winning company
Member of US Green Building Council
Manufactures products in-house
No lifetime warranty
More expensive than competition
Renewal by Andersen provides the best availability in Danville. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has 27 years of experience in the windows industry, and it has proved to be one of the most respected companies in Danville.
It has established itself as a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen offers some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for Energy Star windows when inquiring. A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019.
How much does Renewal by Andersen cost in Danville?Andersen does not display prices on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. Getting a free quote on its website is the best way to know for sure.
We have tried to remain unbiased and transparent by describing pros and cons for each company. Additionally, any partnerships do not influence our reviews.
More Window Companies in Danville
Renewal by Andersen of San Francisco
Hayward, CAEducational Website
Price Transparency
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Double-Hung
Skylights
Glass Doors
Bay Windows
Cal Coast Window & Door
Pleasanton, CAFree assessment
Good Customer Service
Price Transparency
Educational Website
Services Offered
Bay Windows
Glass Doors
Energy-Efficient Options
Window Replacement/Installation
Golden Heights Remodeling INC
Concord, CAGood Customer Service
Educational Website
Free assessment
Price Transparency
Services Offered
Bay Windows
Window Replacement/Installation
Quality Windows & Doors
Pleasanton, CAFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Glass Doors
Window Replacement/Installation
Mr Window Replacement
Fremont, CAGood Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Bay Windows
Vinyl Frames
GENERAL B CONTRACTOR
San Jose, CAPrice Transparency
Free assessment
Educational Website
Good Customer Service
Services Offered
Window Replacement/Installation
Santa Rosa Window Tint
Santa Rosa, CAPrice Transparency
Free assessment
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Alexander Company
Burlingame, CAGood Customer Service
Free assessment
Price Transparency
Services Offered
Glass Doors
Skylights
Window Repair
Bay Windows
Window Replacement/Installation
Window Factory
Greenbrae, CAEducational Website
Free assessment
Good Customer Service
Services Offered
Vinyl Frames
Window Replacement/Installation
Fiberglass Frames
Bay Windows
Wood Frames
Metal Frames
Glass Doors
The Glass Guru
Fairfield, CAEducational Website
Free assessment
Good Customer Service
Services Offered
Window Repair
Energy-Efficient Options
Storm/Impact Windows
Triple Pane Glass
Window Replacement/Installation
Metal Frames
Skylights
Custom Glass
Glass Doors
Vinyl Frames
Glass Showers
Tempered Glass
Wood Frames
Fiberglass Frames
Glass Repair
Screen Repair
Mirrors
Bay Builders and Remodeling Inc.
San Jose, CAEducational Website
Price Transparency
Free assessment
Good Customer Service
Services Offered
Bay Windows
Window Replacement/Installation
Sivan Windows and Doors - San Jose Window and Door Replacement Company
San Jose, CAEducational Website
Price Transparency
Free assessment
Good Customer Service
Services Offered
Glass Doors
Window Replacement/Installation
American Window Specialist
Campbell, CAFree assessment
Services Offered
Window Repair
Window Replacement/Installation
Bay Windows
Glass Doors
Vinyl Frames
Double-Hung
Northwest Exteriors
Santa Rosa, CAEducational Website
Free assessment
Timely Service
Price Transparency
Services Offered
Window Replacement/Installation
Vinyl Frames
Custom Exteriors, Inc
Pleasanton, CAGood Customer Service
Educational Website
Price Transparency
Free assessment
Services Offered
Custom Window Designs
Window Replacement/Installation
Energy-Efficient Options
Glass Doors
Bay Windows
R & M Quality Windows & Doors
Newark, CATimely Service
Price Transparency
Good Customer Service
Free assessment
Educational Website
Services Offered
Glass Doors
Window Replacement/Installation
Bay Windows
Integrity Windows & Doors
San Jose, CAPrice Transparency
Good Customer Service
Services Offered
Bay Windows
Metal Frames
Fiberglass Frames
Wood Frames
Vinyl Frames
Glass Doors
Window Replacement/Installation
Milgard Windows & Doors
Sacramento, CATimely Service
Educational Website
Good Customer Service
Free assessment
Price Transparency
Services Offered
Fiberglass Frames
Bay Windows
Double-Hung
Energy-Efficient Options
Window Replacement/Installation
Metal Frames
Glass Doors
B & L Glass
Santa Rosa, CATimely Service
Educational Website
Services Offered
Custom Glass
Glass Repair
Mirrors
Energy-Efficient Options
Glass Showers
Window Replacement/Installation
Glass Doors
Skylights
East County Glass & Window, Inc.
Pittsburg, CAEducational Website
Services Offered
Glass Doors
Window Replacement/Installation
Mirrors
Glass Showers
Bay Windows
Calculate how much you can expect to pay for window installation and replacement in Danville, CA using our customized window cost calculator.
Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.
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.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
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.
Danville, CA Window Replacement FAQs
How much does a window install cost?
The national average cost of installing a single window is about $600 but can range from $200 to $1,200, based on a variety of factors. The price is usually dependent on the location of your property, the size of the window and the type and material of the window. Also, keep in mind that energy-efficient windows may cost more upfront but can save you hundreds of dollars a year in energy bills.
Which type of window should I get?
A window’s energy efficiency is affected by a variety of factors, such as the quality of the installation and what kind of window it is. Look for Energy Star Certified windows — these are often the most energy-efficient and are certified by the U.S. Department of Energy.
What do window installers do?
Window installation professionals travel to your house to remove your old windows and replace them with new ones. Some providers install products distributed by other companies, whereas others are both manufacturers and installation companies combined. The installer will also clean up after the installation.
When is the best time of year to replace windows?
Though you can install windows any time of year, warmer weather is typically better for installing replacement windows. Additionally, the weather should be dry, because rain can make the installation more difficult.
How long does it typically take to install windows?
Each window takes around 30 minutes to install depending on the kind of window. However, the window installation can take two days or more if you have a lot of windows that have to be installed.