20 Best Window Companies in Belmont, CA (2025 Reviews)
Looking to improve your house’s energy efficiency? The best window replacement companies can help.
We analyzed all the top-rated window companies in Belmont 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
The EcoWatch Reviews team is all about finding solutions for eco-conscious homeowners in Belmont. Drafty windows can lower your home’s energy efficiency by up to 30%, according to the Department of Energy. In Belmont, that’s around $440 a year that you could save on your electric bills by making the switch.
That’s bad for both your wallet and the environment, but one of the best window installation companies can help with that.
Efficient windows are particularly important in Belmont, where the temperature varies throughout the year. According to Energy Star, switching to energy-efficient windows can save the average homeowner up to $440 per year.
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 Belmont
The EcoWatch Reviews team examined dozens of installers in Belmont to find the best window companies for our readers. The providers reviewed in this article scored best in our categories: energy-efficient offerings, customer service, availability, price 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 offers windows expertise in Belmont. This company has 27 years of experience in the window installation industry, and it has established itself as one of the best companies in the business. Many positive reviews from customers online back the provider's reputation.
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 WindowsThere are a wide range of window types available from Window World, some of which are Energy Star products. 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 Belmont?Window World doesn’t have any cost information available on its website, but it's known for offering some of the most affordable window installations around. Receiving 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 offers the best local installation in Belmont. This company has 60 years of experience in the window installation industry, and it has established itself as one of the best companies in the business. Many positive reviews from customers online back the provider's reputation.
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 WindowsThere are a wide range of window types available from Milgard Windows & Doors, some of which are Energy Star products. 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 Belmont?Milgard doesn’t have any cost information available on its website, but it offers different kinds of windows at varying price points. Receiving 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 offers the best availability in Belmont. This company has 27 years of experience in the window installation industry, and it has established itself as one of the best companies in the business. Many positive reviews from customers online back the provider's reputation.
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 WindowsThere are a wide range of window types available from Renewal by Andersen, some of which are Energy Star products. 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 Belmont?Andersen doesn’t have any cost information available 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. Receiving a free quote on its website is the best way to know for sure.
We’ve recommended installers with shining reputations, but keep in mind these are national companies, so your service may depend on your local crew. We have tried to be unbiased and transparent by including pros and cons for every company reviewed.
More Window Companies in Belmont
Renewal by Andersen of San Francisco
Hayward, CAPrice Transparency
Good Customer Service
Educational Website
Free assessment
Services Offered
Bay Windows
Window Replacement/Installation
Double-Hung
Skylights
Glass Doors
Mr Window Replacement
Fremont, CAFree assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Vinyl Frames
Bay Windows
Cal Coast Window & Door
Pleasanton, CAEducational Website
Price Transparency
Free assessment
Good Customer Service
Services Offered
Bay Windows
Glass Doors
Window Replacement/Installation
Energy-Efficient Options
Quality Windows & Doors
Pleasanton, CAFree assessment
Good Customer Service
Price Transparency
Educational Website
Services Offered
Glass Doors
Window Replacement/Installation
GENERAL B CONTRACTOR
San Jose, CAEducational Website
Good Customer Service
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
Golden Heights Remodeling INC
Concord, CAPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Bay Windows
Window Replacement/Installation
Alexander Company
Burlingame, CAGood Customer Service
Price Transparency
Free assessment
Services Offered
Skylights
Bay Windows
Glass Doors
Window Repair
Window Replacement/Installation
Bay Builders and Remodeling Inc.
San Jose, CAFree assessment
Price Transparency
Educational Website
Good Customer Service
Services Offered
Bay Windows
Window Replacement/Installation
American Window Specialist
Campbell, CAFree assessment
Services Offered
Glass Doors
Bay Windows
Vinyl Frames
Window Replacement/Installation
Window Repair
Double-Hung
Sivan Windows and Doors - San Jose Window and Door Replacement Company
San Jose, CAGood Customer Service
Educational Website
Free assessment
Price Transparency
Services Offered
Glass Doors
Window Replacement/Installation
Window Factory
Greenbrae, CAGood Customer Service
Free assessment
Educational Website
Services Offered
Metal Frames
Glass Doors
Wood Frames
Vinyl Frames
Bay Windows
Fiberglass Frames
Window Replacement/Installation
The Glass Guru
Fairfield, CAGood Customer Service
Free assessment
Educational Website
Services Offered
Custom Glass
Glass Repair
Screen Repair
Glass Doors
Window Replacement/Installation
Triple Pane Glass
Storm/Impact Windows
Tempered Glass
Energy-Efficient Options
Metal Frames
Window Repair
Vinyl Frames
Glass Showers
Mirrors
Wood Frames
Skylights
Fiberglass Frames
R & M Quality Windows & Doors
Newark, CAFree assessment
Educational Website
Timely Service
Price Transparency
Good Customer Service
Services Offered
Bay Windows
Window Replacement/Installation
Glass Doors
Custom Exteriors, Inc
Pleasanton, CAGood Customer Service
Free assessment
Educational Website
Price Transparency
Services Offered
Bay Windows
Custom Window Designs
Glass Doors
Window Replacement/Installation
Energy-Efficient Options
Integrity Windows & Doors
San Jose, CAGood Customer Service
Price Transparency
Services Offered
Window Replacement/Installation
Metal Frames
Glass Doors
Wood Frames
Vinyl Frames
Fiberglass Frames
Bay Windows
American Vision Windows
Santa Clara, CAPrice Transparency
Educational Website
Free assessment
Services Offered
Wood Frames
Vinyl Frames
Window Replacement/Installation
Energy-Efficient Options
Glass Doors
Fiberglass Frames
Double-Hung
East County Glass & Window, Inc.
Pittsburg, CAEducational Website
Services Offered
Window Replacement/Installation
Glass Showers
Mirrors
Glass Doors
Bay Windows
American Window Systems, Inc.
Napa, CAFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Skylights
Window Replacement/Installation
Glass Doctor of The Bay Area
Hayward, CAEducational Website
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Glass Repair
Bay Windows
Energy-Efficient Options
Mirrors
Custom Glass
Glass Showers
Window Repair
Best Exteriors
Oakland, CAPrice Transparency
Timely Service
Free assessment
Good Customer Service
Educational Website
Services Offered
Double-Hung
Fiberglass Frames
Energy-Efficient Options
Glass Doors
Window Replacement/Installation
Wood Frames
Bay Windows
Vinyl Frames
Calculate how much you can expect to pay for window installation and replacement in Belmont, 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 Belmont Saves You Money
There are quite a few perks of switching to energy-efficient windows. A few reasons you may want to consider making the switch are the following:
- Protect your investment: If your home is on the older side, your windows are most likely outdated. Upgrading your windows can make your home more comfortable and also help increase the value of your home if you decide to sell.
- Decrease your carbon footprint: By using less energy once you switch to Energy Star certified windows, you’ll also be decreasing your indirect greenhouse gas emissions by about 12%, according to Energy Star.
- Save money on energy bills: After you switch to energy-efficient windows, you can see a reduction in your bills by about 12% because you’ll require less energy to heat or cool your house.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
Estimated Cost of Window Replacement in Belmont
When considering window installation, each company provides varying services and prices. Let’s look at some average costs and services.
How Much Do New Windows Cost?
The national average cost to replace one window is about $600 but can range anywhere from $200 to $1,200. How much it will cost varies based on several factors, like size, number of windows, type, material, the location of your home and more.
It’s important to note that windows with the best efficiency may cost more initially but can save you hundreds of dollars by lowering your energy bills. Investing in Energy Star certified windows can save Belmont homeowners $440+ a year when replacing single-pane windows.
Costs will also vary based on the material you pick for your window frames. Aluminum frames cost the least. They’re sturdy, light and maintenance-free, but provide poor insulation. Vinyl frames are somewhat expensive and offer good insulation. Composite frames made with wood fibers encased in plastic also offer good insulation and are moderately expensive. Wood frames cost the most and are the most in-demand. They’re also aesthetically pleasing and provide decent insulation for your home.
What Services do Window Installers Offer?
The first step when planning a window replacement is to think about whether you want a full-frame or pocket installation.
Full-frame installations are usually done when you want a new style or your window has significant deterioration. With this service, your installers will replace the full window, including the frame, sill and trim. A pocket installation means replacing a window without taking out the complete frame, which is generally cheaper than a full-frame installation.
Your window installation company can help you choose which type of installation you should get.
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 Belmont
In our search to find the most reliable, eco-friendly window installers in Belmont, EcoWatch assessed dozens of companies before landing on these. Along with energy efficiency, we reviewed each installer and ranked them based on the following methodology:
Service Area
This one is pretty self-explanatory, but we’ve chosen to highlight window installers that serve Belmont 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 on this list to make sure its technicians are well-qualified and that the company has gotten lots 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 customer satisfaction, weighted by sample size. Customer satisfaction may be the most important factor, as it indicates the quality of services across nearly every category, including professionalism, cost, quality of parts, quality of installation, warranty and more.
Cost
Cheaper windows certainly don’t mean better windows, but we know many of our readers try to keep costs low when possible. When analyzing the prices of providers, we awarded higher points 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 give you 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 a proven track record in the industry. Window installers that have more experience will earn higher rankings by our standards. We like to see at least ten years of experience.
Belmont, CA Window Replacement FAQs
What is the average cost to install windows?
The average cost to replace a window can range between $450 and $650. There are a variety of factors that affect the price, including how energy-efficient the windows are, styles and sizes of windows, local labor costs, your property’s location, the materials used in designing the windows and the number of windows.
What are the most common kinds of replacement windows?
There are several different kinds of windows you can get for your home, including double-hung and single-hung windows, casement windows, slider windows, awning windows, picture windows, bay windows and transom windows.
Do you really need to use a window installation company?
You should hire a window installation professional whenever you want to upgrade your windows. Installing windows is a involved process that can take a lot of time, so it’s best handled by the professionals.
What time of year is a good time to replace my windows?
Even though you can install windows any time of year, warmer weather is often better for installing replacement windows. Additionally, it shouldn’t be raining, since rain can make the installation harder.
Should I replace all my windows at the same time?
If your windows are more than 20 years old, it’s probably time to replace all of them. By that point, they are typically less efficient, draftier and/or more damaged than new windows. Doing your windows all at once will involve less paperwork and less stress.