22 Best Window Replacement Companies in Thousand Oaks, CA (Mar 2023)
Window Companies Near Me
Looking to replace your home's windows? We've got all the information you need in this guide to the top window installation companies.
We analyzed all the top window installers in Thousand Oaks and selected the top 22 based on:
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Customer reviews
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Window replacement expertise
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Popularity with home-owners like you
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Updated March 14, 2023
Why you can trust EcoWatch
Although eco-friendly energy sources like wind and solar are important when it comes to decreasing your carbon footprint, improving your house's energy efficiency can also have a considerable impact on home energy conservation. Traditional, outdated windows could lead to having higher electricity bills during the winter or summer months.
That's also bad news for the environment, as the extra energy used by leaky windows increases your carbon footprint.
So if you're building a new home, renovating or changing out old windows in Thousand Oaks, you've found the best place to get started.
Best Affordability
Window World
- Low prices relative to competitors
- EnergyStar Partner
- Great industry reputation
- Quality of service will depend on your area
Excellent Reputation
Milgard Windows & Doors
- EnergyStar Partner
- Wide network of installers
- Lifetime warranty available
- Limited additional services
Best Overall
Renewal by Andersen
- Member of US Green Building Council
- Manufactures products in-house
- Great industry reputation
- More expensive than competition
Best Window Replacement Companies in Thousand Oaks
The EcoWatch Reviews team examined dozens of installers that serve the Thousand Oaks area to find the top window installation companies that fit our standards. The providers we've mentioned in this article passed our review standards for energy-efficient offerings as well as local expertise, customer service, price and beyond.

Window World
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Low prices relative to competitors
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EnergyStar Partner
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Great industry reputation
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Quality of service will depend on your area
Window World offers windows expertise in Thousand Oaks. Window World has been in the window industry for about 27 years.
It 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's commitment to sustainability shows in its energy-efficient window offerings. 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 Thousand Oaks?Window World doesn't have any prices displayed on its website, but it's known for offering some of the most affordable window installations around. The best way to get more accurate information is to get a free quote from the company.

Milgard Windows & Doors
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EnergyStar Partner
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Wide network of installers
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Lifetime warranty available
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Limited additional services
Milgard Windows & Doors has the best local installation in Thousand Oaks. It's a family-owned and -operated window replacement company, which primarily serves the West Coast. Milgard has over 60 years of experience in the industry, and it currently serves Anaheim, Riverside, Los Angeles, San Bernardino and Orange counties. The provider has plenty of glowing reviews from customers on online review websites.
You may want to consider opting for Milgard if you're interested in 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 has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want 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 Thousand Oaks?Milgard does not list prices on its website, but it offers different kinds of windows at varying price points. The best way to get more accurate information is to receive a free quote from the company.

Renewal by Andersen
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Member of US Green Building Council
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Manufactures products in-house
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Great industry reputation
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More expensive than competition
Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has around 27 years of experience in the window installation business. Many positive reviews on customer review websites back the company'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 WindowsRenewal by Andersen is an Energy Star partner with a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company's windows are Energy Star certified, so be sure to mention that you want energy-efficient windows to your Andersen representative when inquiring about services.
How much does Renewal by Andersen cost in Thousand Oaks?Prices aren't available on Andersen's website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. You can request a free quote on its website for more information about pricing.

Universal Windows Direct
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Makes charitable contributions
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Manufactures products in-house
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Wide variety of products and services
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Lifetime warranty
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Limited service area
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Some installations carried out by third-party contractors
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Quality of service will depend on your area
Universal Windows Direct is a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. This window installation company has been operating since 2002 and currently serves 27 states nationwide. Its reputation is backed by a considerable amount of positive reviews from customers online.
If you're looking for a company that has an industry-leading warranty covering products, parts and workmanship for life, this may be the provider for you.
Energy Efficiency of Universal Windows Direct WindowsThe company offers energy-efficient UniShield brand windows. According to its website, UniShield window packages have higher gas fill rates and longer gas retention than most other brands on the market, and they are Energy Star products. Not all of Universal's offerings are Energy Star certified, so be sure to mention that you're interested in Energy Star windows when inquiring.
How much does Universal Windows Direct cost in Thousand Oaks?Universal does not outline prices on its website, but installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. The best way to get more accurate information is to get a free quote from the company.
We strive to remain unbiased and transparent by including pros and cons for each company we review. Additionally, our rankings are not affected by any partnerships.
More Window Replacement Companies in Thousand Oaks
Economy Glass Co West Inc
Santa Monica, CA-
Price Transparency
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Consistent Workmanship
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Timely Service
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Excellent Customer Service
Services Offered
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Glass Showers
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Fast Delivery
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Tempered Glass
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Custom Window Designs
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Full-Service Installations
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Double-Hung
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Sliding Glass
Windows N' Things
Canoga Park, CA-
Arrives on Time
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Educational Website
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Award-Winning
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Price Transparency
Services Offered
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Residential Windows
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Architectural Glass
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Fast Delivery
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Energy-Efficient Options
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Custom Windows
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Aluminum Window Frames
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Double-Hung
The Window Factory
Simi Valley, CA-
No-Hassle Pricing
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Dependable Service
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Free Quotes
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Good Customer Service
Services Offered
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Fast Delivery
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Energy-Efficient Options
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Custom Windows
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Commercial Windows
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Double-Hung
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Sliding Glass
Tashman Home Center
West Hollywood, CA-
Price Transparency
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Educational Website
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Locally Recognized for Quality
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Excellent Customer Service
Services Offered
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Residential Windows
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Fast Delivery
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Custom Window Designs
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Aluminum Window Frames
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Commercial Windows
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Double-Hung
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Sliding Glass
Preferred Glass And Windows
Simi Valley, CA-
Consistent Workmanship
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Excellent Customer Service
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No-Hassle Pricing
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Locally Recognized for Quality
Services Offered
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Glass Showers
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Custom Windows
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Commercial Windows
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Stained Glass
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Sliding Glass
Preferred Glass & Window
Camarillo, CA-
Helps Educate Customers
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Award-Winning
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Price Transparency
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Reliable Service
Services Offered
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Glass Showers
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Custom Windows
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Commercial Windows
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Stained Glass
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Sliding Glass
Anytime Windows and Doors
North Hollywood, CA-
Dependable Service
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Price Transparency
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Excellent Customer Service
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No-fee Quotes
Services Offered
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Fast Delivery
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Energy-Efficient Options
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Custom Window Designs
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Aluminum Window Frames
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Sliding Glass
Quality Windows & Doors
Oxnard, CA-
Locally Recognized for Quality
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No-Hassle Pricing
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Educational Website
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No-fee Quotes
Services Offered
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Residential Windows
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Architectural Glass
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Glass Showers
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Custom Windows
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Aluminum Window Frames
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Full-Service Installations
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Commercial Windows
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Double-Hung
Legendary Glass Windows & Doors
609 Science Dr, CA-
Good Customer Service
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Helps Educate Customers
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No-fee Quotes
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No-Hassle Pricing
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Window Designs
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Residential Windows
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Business Windows
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Sliding Glass
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Aluminum Window Frames
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Glass Showers
GOLDEN BEAR GLASS & WINDOWS LLC
Los Angeles, CA-
Price Transparency
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Helps Educate Customers
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Excellent Customer Service
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Consistent Workmanship
Services Offered
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Residential Windows
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Architectural Glass
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Heavy Glass
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Energy-Efficient Options
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Tempered Glass
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Custom Window Designs
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Aluminum Window Frames
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Business Windows
Frontier Windows & Doors
Canoga Park, CA-
Excellent Customer Service
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Arrives on Time
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Price Transparency
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Reliable Service
Services Offered
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Architectural Glass
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Energy-Efficient Options
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Custom Windows
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Aluminum Window Frames
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Double-Hung
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Sliding Glass
Progressive Insulation & Windows
Chatsworth, CA-
Dependable Service
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Excellent Customer Service
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No-Hassle Pricing
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No-fee Quotes
Services Offered
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Sliding Glass
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Custom Windows
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Energy-Efficient Options
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Double-Hung
California Sliding Door Parts & Repair Service
Winnetka, CA-
Educational Website
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Price Transparency
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Reliable Service
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Good Customer Service
Services Offered
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Custom Window Designs
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Aluminum Window Frames
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Sliding Glass
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Double-Hung
Sears Window Replacement
Los Angeles, CA-
No-Hassle Pricing
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Educational Website
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Award-Winning
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Consistent Workmanship
Services Offered
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Sliding Glass
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Custom Window Designs
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Energy-Efficient Options
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Double-Hung
American Vision Windows
Simi Valley, CA-
Price Transparency
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Consistent Workmanship
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No-fee Quotes
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Educational Website
Services Offered
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Energy-Efficient Options
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Custom Windows
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Aluminum Window Frames
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Double-Hung
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Stained Glass
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Sliding Glass
Beverly Hills Glass Inc
Los Angeles, CA-
No-Hassle Pricing
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Reliable Service
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No-fee Quotes
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Excellent Customer Service
Services Offered
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Residential Windows
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Architectural Glass
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Glass Showers
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Custom Window Designs
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Business Windows
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Double-Hung
Ron's Glass & Screen
Somis, CA-
Free Quotes
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No-Hassle Pricing
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Good Customer Service
Services Offered
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Residential Windows
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Glass Showers
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Heavy Glass
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Custom Window Designs
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Aluminum Window Frames
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Commercial Windows
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Sliding Glass
Pure View Window & Door, Inc.
Ventura, CA-
Arrives on Time
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Free Quotes
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Good Customer Service
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Reliable Service
Services Offered
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Custom Windows
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Fast Delivery
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Architectural Glass
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Sliding Glass
West Coast Sash & Door Inc
Ventura, CA-
Helps Educate Customers
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No-fee Quotes
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Consistent Workmanship
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Price Transparency
Services Offered
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Custom Windows
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Residential Windows
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Business Windows
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Double-Hung
Jon's Window & Awning, Inc.
Burbank, CA-
No-fee Quotes
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Timely Service
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Educational Website
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Excellent Customer Service
Services Offered
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Custom Windows
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Aluminum Window Frames
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Energy-Efficient Options
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Sliding Glass
Valencia Custom Shower Doors
Canyon Country, CA-
Dependable Service
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Locally Recognized for Quality
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Price Transparency
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No-fee Quotes
Services Offered
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Custom Windows
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Residential Windows
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Commercial Windows
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Sliding Glass
Window Design Group
Thousand Oaks, CA-
Helps Educate Customers
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No-fee Quotes
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Consistent Workmanship
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Excellent Customer Service
Services Offered
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Custom Windows
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Aluminum Window Frames
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Sliding Glass
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Double-Hung
How Installing Energy-Efficient Windows in Thousand Oaks Saves You Money
Energy-efficient windows can offer benefits in more than one way. Here are some reasons you may want to think about making the switch:
- Protect your investment: The older your home is, the more likely it is that getting new windows will benefit you. Older homes usually have windows that are outdated, leaky or maybe even damaged in some way. Updating your windows could help increase the value of your home if you decide to sell.
- Save money on energy bills: Since energy-efficient windows decrease how much energy you need to heat or cool your home, they can help you save about $572 annually on your energy bills in Thousand Oaks.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which not only provide better insulation for your home, but also filter out harmful UV rays, preventing your furniture, carpet and other valuables from fading.
- Reduce your carbon footprint: Since energy-efficient windows improve the insulation in your home, you can lower your carbon footprint by about 12%, according to Energy Star.
Estimated Cost of Window Replacement in Thousand Oaks
Windows come in different shapes, styles and purposes, so costs and services will differ tremendously based on your project. Below, we go over the average cost and services that you can get from window replacement companies.
How Much Do New Windows Cost?
According to our market research, the national average cost of replacing a single window is around $600. However, window installation costs can range from $200 to $1,200 for each window. Costs will vary considerably based on your location, the current condition of your home, the quality of your products and the number of windows you need. A lot of window companies also offer door installations and other add-ons like coating, baths, shutters and more. Additional services will increase your overall project costs.
With windows, efficiency is the most important factor for most homeowners. Windows with higher efficiency may cost more initially, but by increasing the efficiency of your home — especially if you live in a hot climate — they can provide decades of energy savings. According to Energy Star, buying certified energy-efficient windows can save Thousand Oaks homeowners $572+ per year after replacing single-pane windows.
The cost of your window installation will also vary depending on the kind of window material you choose for the frames. Wood windows are generally the most expensive, though it depends if they are solid wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are more efficient.
What Services do Window Installers Offer?
The first question to ask yourself when planning to replace your windows is: Do you need a full-frame installation or a pocket installation?
A full-frame installation is a total window replacement. It involves removing the old window, the windowsill, and the exterior and interior trim. It can also involve extra materials, such as insulation and drip edges, which raise the total cost of the project. Also worth noting: you may have to touch up the paint surrounding the window after a full-frame installation. Pocket installations (also known as retrofits) are when you replace a window while leaving the old frame. Pocket installations are on the simpler end and won't carry as large a bill, but you can't do this type of installment if you have any pre-existing rot or water damage.
Your window installation company can help you choose which type of installation you need.
Best Affordability
Window World
- Low prices relative to competitors
- EnergyStar Partner
- Great industry reputation
- Quality of service will depend on your area
Excellent Reputation
Milgard Windows & Doors
- EnergyStar Partner
- Wide network of installers
- Lifetime warranty available
- Limited additional services
Best Overall
Renewal by Andersen
- Member of US Green Building Council
- Manufactures products in-house
- Great industry reputation
- More expensive than competition
How We Choose the Best Window Installers in Thousand Oaks
The EcoWatch Reviews team differs from other reviewers, as we're examining these companies through a sustainability lens. Along with energy efficiency, we analyzed window companies all across the state and ranked them using the following methodology:
Service Area
Because this is a guide for Thousand Oaks, we only included companies that serve the city. There are certainly reputable providers that didn't make the cut because of the low odds that they would serve the average homeowner in Thousand Oaks.
Work Quality
We're willing to bet that you're looking for a company to do a great job installing windows. We've vetted each company on this list to ensure its contractors are well-qualified and that the company has gotten a lot of positive customer feedback to vouch for its service.
Customer Reviews
Customer feedback is another very important review factor. If the majority of customers don't have good things to say about their service from a certain company, it won't be featured on EcoWatch.
Cost
This one is a give-and-take: as with other services, cheap window installation companies are not going to provide the most quality service. On the other hand, we want to ensure we're highlighting companies that provide a variety of price and financing options so they're accessible to most homeowners.
Warranty
Protecting your investment in new windows is important to many homeowners. That's why window installation companies that offer 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 been in the industry for quite some time. Window installers that have more years of experience will earn higher rankings by our standards. We like to see at least ten years of experience.
Thousand Oaks, CA Window Replacement FAQs
How much does a window install cost?
The typical cost to install a single window ranges between $450 and $650. There are a variety of factors that influence the price, such as your property's location, the number of windows, the materials used in designing the windows, how energy-efficient the windows are, styles and sizes of windows and local labor costs.
Which type of window should I get?
Generally, double-pane windows are more efficient than single-pane windows and windows that do not open are more efficient than windows that do. To be sure you'll have the most energy-efficient windows, look for models that have the blue Energy Star certification attached to them — they're certified energy-efficient by the U.S. Department of Energy.
Can I install my own windows?
If you're handy and know how to replace a window, it's possible to install your own windows. However, if you don't have the time or experience, we recommend hiring a professional.
Should I replace all my windows at the same time?
If you want to get more efficient windows and save money on your energy bills, replacing all of the windows at once is the only way to gain that benefit. However, if you have just a few windows that are damaged or leaky, you can replace just those.