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
EcoWatch Local Advisors

By EcoWatch Local Advisors

Updated January 24, 2025

Why you can trust EcoWatch

Our panel of energy experts work tirelessly to create unbiased reviews and informative content to help homeowners make educated decisions. No other windows site has covered energy efficiency and sustainability as long as EcoWatch, which means we're going to help you find windows replacements that will save on your energy bill and put more money back in your wallet.

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.

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Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great Industry Reputation
  • Award-winning Company
  • Member of US Green Building Council
  • Manufactures products in-house
Save $375 Off Each Window
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

Best for Residential Windows

Window Nation

★★★★★
4.0
  • 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 logo
Best Affordability

Window World

★★★★★
BBB Rating: A+
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon EnergyStar Partner
  • Pros icon Large serice area
  • Pros icon Low prices relative to competitors
  • Pros icon Great industry reputation
  • Pros icon Lifetime warranty
Cons:
  • Pros icon 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 Windows

There 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 logo
Excellent Reputation

Milgard Windows & Doors

★★★★★
BBB Rating: A
Locations: West Coast
Founded: 1962
Pros:
  • Pros icon EnergyStar Partner
  • Pros icon Wide network of installers
  • Pros icon Lifetime warranty available
Cons:
  • Pros icon Entails hiring third-party contractors
  • Pros icon 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 Windows

There 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 logo
Best Overall

Renewal by Andersen

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Great industry reputation
  • Pros icon Award-winning company
  • Pros icon Member of US Green Building Council
  • Pros icon Manufactures products in-house
Cons:
  • Pros icon No lifetime warranty
  • Pros icon 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 Windows

There 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, CA
4.8
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Bay Windows
  • Service icon Window Replacement/Installation
  • Service icon Double-Hung
  • Service icon Skylights
  • Service icon Glass Doors

Website: https://www.renewalbyandersen.com/window-company/890-san-francisco-ca/retailer
Address: 30806 Santana St, Hayward, CA 94544
Phone: (510) 803-3110

Mr Window Replacement

Fremont, CA
5.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Vinyl Frames
  • Service icon Bay Windows

Website: http://www.mrwindowreplacement.com/
Address: 4053 Nicolet Ave, Fremont, CA 94536
Phone: (707) 294-8507

Cal Coast Window & Door

Pleasanton, CA
5.0
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Bay Windows
  • Service icon Glass Doors
  • Service icon Window Replacement/Installation
  • Service icon Energy-Efficient Options

Website: https://calcoastwindows.com/
Address: 5673 W Las Positas Blvd Suite 203, Pleasanton, CA 94588
Phone: (925) 398-8184

Quality Windows & Doors

Pleasanton, CA
5.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

  • Service icon Glass Doors
  • Service icon Window Replacement/Installation

Website: https://www.qwdwindowsanddoors.com/
Address: 3732 Stanley Blvd Ste B, Pleasanton, CA 94566
Phone: (925) 484-1747

GENERAL B CONTRACTOR

San Jose, CA
5.0
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement/Installation

Website: http://www.generalbcontractor.com/
Address: 262 Hillsdale Ave, San Jose, CA 95136
Phone: (408) 999-1111

Golden Heights Remodeling INC

Concord, CA
5.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Bay Windows
  • Service icon Window Replacement/Installation

Website: https://www.goldenheightsremodeling.com/
Address: 1110 Burnett Ave # J, Concord, CA 94520
Phone: (800) 521-0950

Alexander Company

Burlingame, CA
4.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Skylights
  • Service icon Bay Windows
  • Service icon Glass Doors
  • Service icon Window Repair
  • Service icon Window Replacement/Installation

Website: https://alexanderco.com/
Address: 1322 Marsten Rd, Burlingame, CA 94010
Phone: (650) 288-0813

Bay Builders and Remodeling Inc.

San Jose, CA
4.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Bay Windows
  • Service icon Window Replacement/Installation

Website: http://baybuilders.com/
Address: 800 Charcot Ave #100, San Jose, CA 95131
Phone: (408) 583-6797

American Window Specialist

Campbell, CA
4.9
★★★★★
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Doors
  • Service icon Bay Windows
  • Service icon Vinyl Frames
  • Service icon Window Replacement/Installation
  • Service icon Window Repair
  • Service icon Double-Hung

Website: https://americanwindowspecialists.com/
Address: 1550 Dell Ave i, Campbell, CA 95008
Phone: (408) 484-7676

Sivan Windows and Doors - San Jose Window and Door Replacement Company

San Jose, CA
4.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Glass Doors
  • Service icon Window Replacement/Installation

Website: https://sivanwindowsanddoors.com/contact-san-jose/
Address: 1650 Las Plumas Ave A, San Jose, CA 95133
Phone: (888) 582-7956

Window Factory

Greenbrae, CA
4.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Metal Frames
  • Service icon Glass Doors
  • Service icon Wood Frames
  • Service icon Vinyl Frames
  • Service icon Bay Windows
  • Service icon Fiberglass Frames
  • Service icon Window Replacement/Installation

Website: http://www.bayareawindowfactory.com/
Address: 2100 Redwood Hwy, Greenbrae, CA 94904
Phone: (415) 924-3300

The Glass Guru

Fairfield, CA
4.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Custom Glass
  • Service icon Glass Repair
  • Service icon Screen Repair
  • Service icon Glass Doors
  • Service icon Window Replacement/Installation
  • Service icon Triple Pane Glass
  • Service icon Storm/Impact Windows
  • Service icon Tempered Glass
  • Service icon Energy-Efficient Options
  • Service icon Metal Frames
  • Service icon Window Repair
  • Service icon Vinyl Frames
  • Service icon Glass Showers
  • Service icon Mirrors
  • Service icon Wood Frames
  • Service icon Skylights
  • Service icon Fiberglass Frames

Website: https://www.theglassguru.com/fairfield-vacaville-ca/
Address: 1601 Enterprise Dr STE 14, Fairfield, CA 94533
Phone: (707) 348-9539

R & M Quality Windows & Doors

Newark, CA
4.8
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Timely Service
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Bay Windows
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors

Website: https://www.randmqualitywindowsanddoors.com/
Address: 5588 Central Ave #A, Newark, CA 94560
Phone: (510) 796-0100

Custom Exteriors, Inc

Pleasanton, CA
4.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Bay Windows
  • Service icon Custom Window Designs
  • Service icon Glass Doors
  • Service icon Window Replacement/Installation
  • Service icon Energy-Efficient Options

Website: https://www.custom-exteriors.com/
Address: 2142 Rheem Dr ste e, Pleasanton, CA 94588
Phone: (888) 957-7800

Integrity Windows & Doors

San Jose, CA
4.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Metal Frames
  • Service icon Glass Doors
  • Service icon Wood Frames
  • Service icon Vinyl Frames
  • Service icon Fiberglass Frames
  • Service icon Bay Windows

Website: http://www.408windows.com/
Address: 4238 Monterey Hwy B, San Jose, CA 95111
Phone: (408) 225-2600

American Vision Windows

Santa Clara, CA
4.7
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Wood Frames
  • Service icon Vinyl Frames
  • Service icon Window Replacement/Installation
  • Service icon Energy-Efficient Options
  • Service icon Glass Doors
  • Service icon Fiberglass Frames
  • Service icon Double-Hung

Website: https://www.americanvisionwindows.com/locations/san-jose/
Address: 400 Mathew St, Santa Clara, CA 95050
Phone: (408) 444-8941

East County Glass & Window, Inc.

Pittsburg, CA
4.7
★★★★★
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Glass Showers
  • Service icon Mirrors
  • Service icon Glass Doors
  • Service icon Bay Windows

Website: http://www.ecglass.com/
Address: 441 E 10th St, Pittsburg, CA 94565
Phone: (925) 432-1433

American Window Systems, Inc.

Napa, CA
4.7
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Skylights
  • Service icon Window Replacement/Installation

Website: https://www.amwinsys.com/
Address: 1729 Action Ave suite b, Napa, CA 94559
Phone: (707) 244-7260

Glass Doctor of The Bay Area

Hayward, CA
4.6
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Glass Repair
  • Service icon Bay Windows
  • Service icon Energy-Efficient Options
  • Service icon Mirrors
  • Service icon Custom Glass
  • Service icon Glass Showers
  • Service icon Window Repair

Website: https://glassdoctor.com/hayward
Address: 773 Berry Ave, Hayward, CA 94544
Phone: (510) 264-5277

Best Exteriors

Oakland, CA
4.6
★★★★★
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Double-Hung
  • Service icon Fiberglass Frames
  • Service icon Energy-Efficient Options
  • Service icon Glass Doors
  • Service icon Window Replacement/Installation
  • Service icon Wood Frames
  • Service icon Bay Windows
  • Service icon Vinyl Frames

Website: https://bestexteriors.com/
Address: 1999 Harrison St #10219, Oakland, CA 94612
Phone: (510) 327-0277
Belmont Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Belmont, CA using our customized window cost calculator.

Estimated Window Cost:
161 homeowners have requested a free estimate in the last 3 days.

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.

Advertisement

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great Industry Reputation
  • Award-winning Company
  • Member of US Green Building Council
  • Manufactures products in-house
Save $375 Off Each Window
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

Best for Residential Windows

Window Nation

★★★★★
4.0
  • 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.