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10 Best Window Replacement Companies in Los Altos, CA

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Written By David Cusick

Last Updated February 2024

Whether you want to improve your home's value or decrease your energy bills, upgrading your windows is a great idea. Drafty, leaky windows can cost you in power bills — about an extra $461 a year in Los Altos. The Department of Energy estimates that about 30% of your house’s heat or cool air could be going out your windows. Selecting the right company for you is an important decision. That's why we've put together this list of the top window installers in Los Altos.

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4.0/5
  • Holds high customer ratings
  • Offers energy-efficient products
  • Provides a lifetime labor warranty

Top 10 Best Window Replacement Companies in Los Altos

Renewal by Andersen of San Francisco

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30806 Santana St, Hayward, CA 94544 (510) 803-3110 renewalbyandersen.com

Price transparency

Educational website

Good customer service

Free assessment

Services Offered

Window replacement/installation
Bay windows
Double-hung
Skylights
Glass doors

Roxy Glass

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7401-A Morton Ave, Newark, CA 94560 (510) 400-7788 bayareawindowglass.com

Good customer service

Price transparency

Timely service

Free assessment

Educational website

Services Offered

Tempered glass
Glass repair
Glass doors
Energy-efficient options
Custom glass
Triple pane glass
Mirrors
Glass showers
Bay windows
Window replacement/installation

Argonaut Window & Door, Inc.

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10612 S De Anza Blvd, Cupertino, CA 95014 (800) 430-7535 argowin.com

Price transparency

Free assessment

Good customer service

Educational website

Services Offered

Metal frames
Bay windows
Window replacement/installation

AMC Glass Company, Inc.

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987 E El Camino Real, Sunnyvale, CA 94087 (408) 245-8206 amcglass.com

Price transparency

Free assessment

Good customer service

Services Offered

Tempered glass
Window replacement/installation
Vinyl frames
Skylights
Mirrors
Glass showers

American Vision Windows

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400 Mathew St, Santa Clara, CA 95050 (408) 444-8941 americanvisionwindows.com

Good customer service

Free assessment

Price transparency

Educational website

Services Offered

Glass doors
Vinyl frames
Wood frames
Window replacement/installation
Energy-efficient options
Fiberglass frames
Double-hung

Home Services at The Home Depot

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2435 Lafayette St, Santa Clara, CA 95050 (408) 359-6414 homedepot.com

Good customer service

Price transparency

Educational website

Free assessment

Services Offered

Glass doors
Window replacement/installation
Screen repair
Glass showers
Custom window designs
Storm/impact windows
Vinyl frames

California Deluxe Windows

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3439 De La Cruz Blvd, Santa Clara, CA 95054 (408) 260-5566 cdwindows.com

Educational website

Price transparency

Good customer service

Services Offered

Bay windows
Window replacement/installation
Vinyl frames
Energy-efficient options
Double-hung
Glass doors
Wood frames
Custom window designs

Bennett Glass Company

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532 Howland St, Redwood City, CA 94063 (650) 367-8930 bennettglasscompany.com

Price transparency

Free assessment

Educational website

Good customer service

Services Offered

Window replacement/installation
Skylights
Glass doors
Screen repair
Bay windows

Los Altos Glass Repair and Replacement

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4546 El Camino Real #217, Los Altos, CA 94022 (650) 443-4973 losaltosglass.com

Good customer service

Free assessment

Services Offered

Glass repair
Bay windows
Window replacement/installation
Custom glass
Glass showers
Mirrors
Energy-efficient options
Window repair
Tempered glass

Sunlight Concepts | Natural Daylighting and Ventilation System - Solatube Dealer

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1130 Walsh Ave, Santa Clara, CA 95050 (408) 844-0081 sunlightconcept.com

Price transparency

Good customer service

Free assessment

Educational website

Services Offered

Skylights
Window replacement/installation
Bay windows
Today's Homeowner Ranking Methodology

Today's Homeowner looks at dozens of datapoints on window replacement companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

How Much Does Window Installation Cost In Los Altos?

Window installation and replacement costs depend on a number of factors, including how difficult your windows are to access or install, the materials you choose, and the number and size of the windows. On average, homeowners in Los Altos spend around $300 per window*. Below are additional cost breakdowns. *Cost data based on sample pricing for window installation from multiple retailers and adjusted for local cost of living.

When To Replace Windows

Adding new energy-efficient windows can greatly increase your home's comfort, noise reduction, appearance, value, and insulation. Signs that it's time to invest in new windows include the following:

  • Fogging between window panes, condensation issues, or rotting window frames that allow moisture intrusion into the home.
  • Windows that are hard to close, open, and lock properly due to wear and age.
  • Cold air and drafts coming in through old, loose-fitting windows.
  • High energy bills and discomfort due to poor insulation.
  • Inefficient and outdated window styles that take away from your house's curb appeal.

How To Choose a Window Company

Hiring an experienced window installation provider contributes to good results and a great experience. Below, we outline the main factors to consider when choosing a qualified window installer.

Experience

Look for well-established local installers with lots of experience. Providers that have worked in Los Altos for years are more likely to know the local climate and how to best meet your needs. Ask for references from recent customers to verify that a provider delivers quality work.

Certifications

Choose an installer that’s certified like major window manufacturers, and that has Fenestration and Glazing Industry Alliance (formerly AAMA) certification. Suitable credentials indicate they've received appropriate instruction in installation best practices. Verify that installers are staff, not subcontracted laborers, and confirm that any technicians working on your home have certification.

Reputation

Spend time reviewing online feedback, verifying with the Better Business Bureau (BBB), and asking for local references. Review customer feedback to confirm that the company regularly provides good workmanship and customer service. Avoid companies with complaints of shoddy work or unfinished jobs.

Process

A reputable provider will give you a comprehensive project plan, detailed timeline, clear expectations, and an overview of all material and installation options. Avoid providers that offer unclear quotes or timelines. Insist on regular contact throughout the process, so you aren't caught off guard once the work begins.

Warranties

Research window installers that assure quality installations and offer warranties on labor and materials. This is a sign of expert workmanship. Opt for companies with unlimited lifetime warranties that transfer to new homeowners.

Materials

Verify that your window company works with trusted, long-lasting brands, offers energy-saving window options, and fits your budget. Look for window options with design flexibility, enhanced UV protection, and good energy ratings. Check whether the materials come with their own manufacturer warranties.

Frequently Asked Questions About Window in Los Altos, CA

The ideal time to install windows in Los Altos is when temperatures are moderate, generally during spring, winter or fall. These conditions allow installers to work with less worry about the weather.

The best type of replacement windows for your Los Altos home depends on the year your home was built –the average house in Los Altos was built around 1964. For older homes, you might want to consider energy-efficient windows such as double-glazed windows, which are designed to keep your home cool in the summer and warm in the winter. Wood frames also have a timeless look that's great for older homes. For more modern homes, you may want to consider vinyl windows, which are durable, affordable and have a modern look.

You can save money on window installation by going with a less expensive option like single-hung windows with vinyl frames. These have lower prices compared to other kinds of windows like wood, fiberglass, or double-hung windows.

It depends on your budget and the condition of your current windows. If your existing windows are in reasonable condition, you may want to wait and only replace the ones that need to be replaced. If you're in an area that has average energy costs, you may want to consider replacing all your windows at once to get the highest energy savings.

In some cases, you can install your own windows, but it's generally recommended to hire a professional. It's important to consider the local climate when replacing windows, as it will affect the process. For example, the temperatures in Los Altos can reach an average high of 71, so you should consider energy-efficient windows that can deflect from the heat. It's also important to measure correctly and understand the instructions for installation. Hiring a professional for your window replacement project will ensure that everything is done correctly.

Hiring a professional window installer helps guarantee the job is done correctly. Professional installers will measure in order to get a perfect fit and will use the right techniques and materials to ensure your windows are properly sealed and fitted. Additionally, professional installers are likely to have access to higher quality materials and more experience than the average homeowner, so you can expect your windows to be put in correctly and stand for years to come.

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