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10 Best Window Replacement Companies in Thousand Oaks, CA

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Written By David Cusick

Last Updated April 2024

Whether you want to improve your home's value or decrease your energy bills, upgrading your windows is an excellent idea. Outdated windows can cost you in energy bills — about an extra $356 a year in Thousand Oaks. The Department of Energy estimates that about 30% of your home’s heat or cool air could be going out your windows. If you can't decide on a window installation company, this guide is a great way to get started. Keep reading to discover the best window installers in Thousand Oaks.

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Top 10 Best Window Replacement Companies in Thousand Oaks

Renewal by Andersen of Los Angeles

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18700 Crenshaw Blvd, Torrance, CA 90504 (310) 214-2222 renewalbyandersen.com

Price transparency

Educational website

Good customer service

Free assessment

Services Offered

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

Window World of Los Angeles

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718 Arrow Grand Cir, Covina, CA 91722 (310) 564-7299 windowworldla.com

Educational website

Free assessment

Good customer service

Price transparency

Services Offered

Bay windows
Double-hung
Vinyl frames
Glass doors
Window replacement/installation

Nu-Star Glass and Mirror

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350 E Easy St #12, Simi Valley, CA 93065 (805) 582-9199 nustarglass.com

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Educational website

Price transparency

Good customer service

Services Offered

Window replacement/installation
Glass repair
Energy-efficient options
Glass showers
Custom glass
Glass doors
Mirrors
Window repair
Vinyl frames

American Vision Windows

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2125 Madera Rd, Simi Valley, CA 93065 (805) 864-5452 americanvisionwindows.com

Educational website

Price transparency

Free assessment

Good customer service

Services Offered

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

The Window Factory

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1060 E Los Angeles Ave, Simi Valley, CA 93065 (805) 257-1196 thewindowfactory.com

Free assessment

Price transparency

Good customer service

Educational website

Services Offered

Triple pane glass
Energy-efficient options
Glass doors
Window replacement/installation
Vinyl frames
Double-hung
Bay windows

Milgard Windows & Doors

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355 E Easy St S, Simi Valley, CA 93065 (805) 581-6325 milgard.com

Good customer service

Price transparency

Educational website

Timely service

Free assessment

Services Offered

Double-hung
Bay windows
Glass doors
Window replacement/installation
Fiberglass frames
Metal frames
Energy-efficient options

Westoaks Glass and Mirror, Inc.

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31210 La Baya Dr, Westlake Village, CA 91362 (310) 456-1315 westoaksglass.com

Price transparency

Timely service

Good customer service

Free assessment

Services Offered

Glass showers
Tempered glass
Mirrors
Window replacement/installation
Glass repair
Skylights
Custom glass

Emergency Glass repair and Board Up

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3554 N Avenida Montuoso, Thousand Oaks, CA 91362 (805) 551-2460 emergencyglassrepairandboardupservices.com

Good customer service

Price transparency

Free assessment

Educational website

Services Offered

Glass repair
Glass showers
Window repair
Glass doors
Window replacement/installation

Affordable Windows & Doors

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2054 Tapo St, Simi Valley, CA 93063 (805) 581-3667 affordable-simi.com

Good customer service

Price transparency

Services Offered

Mirrors
Glass showers
Glass repair
Glass doors
Metal frames
Skylights
Double-hung
Window replacement/installation

Preferred Glass And Windows

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1296 E Los Angeles Ave, Simi Valley, CA 93065 (805) 495-7976 preferredglassandwindows.com

Price transparency

Free assessment

Good customer service

Educational website

Services Offered

Glass doors
Glass showers
Mirrors
Window replacement/installation
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 Thousand Oaks?

Window installation and replacement costs vary based on a number of factors, including how difficult your windows are to access or install, the number and size of the windows, and the materials you choose. On average, Thousand Oaks homeowners will spend roughly $280 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

Replacing your existing windows with new energy-efficient ones can greatly boost your home's insulation, noise reduction, comfort, appearance, and value. Signs it's time to invest in new windows include:

  • Condensation issues, fogging between window panes, or rotting window frames letting in moisture.
  • Windows that are difficult to close, open, and lock properly due to wear and age.
  • Outdated and inefficient window styles that take away from your house's curb appeal.
  • Drafts and cold air coming in through old, loose-fitting windows.
  • High energy bills and discomfort from poor window insulation.

How To Choose a Window Company

Choosing a window installer with the right qualifications helps ensure a smooth installation. We review the most important considerations for selecting a qualified company below.

Experience

Make sure you select a seasoned local installer with a proven track record of successfully installing and replacing windows. Companies that have been operating locally for many years are more likely to understand the local climate and local homeowners' needs. Get references from recent clients to confirm a company provides quality installations.

Certifications

Choose companies that are certified by major window brands, and that have Fenestration and Glazing Industry Alliance (formerly AAMA) certification. Having certification shows they've received proper training in installation best practices. Make sure installers are staff, not subcontractors, and confirm that any technicians working on your home are certified.

Reputation

Read through online customer feedback, check the Better Business Bureau (BBB), and request local references. Review customer feedback to confirm that the company consistently provides quality work and good customer service. Avoid providers that have complaints of shoddy work or unfinished jobs.

Process

A quality provider will give you a comprehensive project plan, well-outlined timeline, clear expectations, and an overview of all material and installation options. Avoid providers that offer vague quotes or timelines. Insist on consistent contact throughout the process, so you aren't caught off guard later on.

Warranties

Research window installers that offer assurances on their installations, and that provide warranties on materials and labor. This shows faith in their work. Also seek out unlimited lifetime warranties that can be transferred to new homeowners.

Materials

Make sure the window company offers windows that are built to last and top energy-saving window brands within your budget. Look for good energy ratings, design flexibility, and enhanced UV protection. Check that the window materials also include manufacturer warranties.

Frequently Asked Questions About Window in Thousand Oaks, CA

In Thousand Oaks, the best time to install windows is when temperatures are mild, generally during spring, winter or fall. These conditions allow installers to work without having to worry about extreme temperatures.

The best type of replacement window for your Thousand Oaks home will vary based on the age of your home, as well as your personal style and budget. You'll want to consider the style of your home — such as if it's newer — so your new windows match. Wooden windows can provide a classic look and feel, while vinyl-framed windows tend to be popular in more modern homes. Fiberglass-framed windows are also a popular choice, as they are energy efficient and long-lasting.

The types of window that typically last longest are ones constructed from vinyl or wood, with double glaze for extra insulation. Vinyl windows are famous for their durability and require little maintenance, and wood windows offer a more classic look. Tripling up on the glazing will reduce heating and cooling bills in the long run. This is especially helpful during Thousand Oaks' hot summers.

The process for window installation typically includes measuring the space, removing the old windows, installing the new windows, checking for proper insulation, and applying caulk around the edges of the frames. Extra steps may be necessary depending on the style of window being installed.

Yes, most window companies offer financing options. Some installers offer low-interest loans, although you may not qualify if your income is on the higher end, while other companies offer unique financing plans with terms and conditions that vary depending on the job.

Hiring a professional window installer helps guarantee the job is done correctly. Professional installers will measure your windows properly in order to get a perfect fit and will use the right techniques and materials to ensure your windows will be properly sealed and secure. Additionally, professional installers are likely to have access to better materials and more experience than the average person, so you can count on your windows to be installed correctly and last for years to come.

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