21 Best Window Replacement Companies in Simi Valley, CA (Mar 2023)
Window Companies Near Me
Looking to replace your 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 Simi Valley and selected the top 21 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 renewable energy sources like wind and solar are important when it comes to reducing your carbon footprint, improving your house's energy efficiency can also have a considerable impact on home energy conservation. During the hot summer months, the last thing you want is your cool air to leak out of your outdated, drafty windows.
That's also bad news for the environment because the extra energy used by damaged windows increases your carbon footprint.
Efficient windows are of particular importance in Simi Valley, where summers are long and hot. According to Energy Star, making the switch to energy-efficient windows can save the average homeowner up to $572 a year.
Best Affordability
Window World
- EnergyStar Partner
- Great industry reputation
- Large serice area
- 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
- Award-winning company
- No lifetime warranty
Best Window Replacement Companies in Simi Valley
The EcoWatch Reviews team evaluated dozens of installers across the country to find the best window installation companies for our readers. The companies we've included in this article scored best in our categories, which include energy-efficient offerings, availability, customer service, price and more.

Window World
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EnergyStar Partner
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Great industry reputation
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Large serice area
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Quality of service will depend on your area
Window World is the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has about 27 years of experience in the window replacement sector. The company has hundreds of positive reviews from customers on online review websites.
Window World may be the company for you if you want one 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 WindowsIts high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home. Not all of Window World's offerings are Energy Star certified, so be sure to mention that you'd like Energy Star windows when inquiring.
How much does Window World cost in Simi Valley?Prices are not available on Window World's website because the cost of window installment depends on how many and what type(s) of windows you need. However, it's known for offering some of the most affordable window installations around. For more accurate information on the cost, you can inquire about a 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 offers the best local installation in Simi Valley. This company has been operating since 1962 and currently provides services to Anaheim, Riverside, Los Angeles, San Bernardino and Orange counties. The company has plenty of glowing reviews from customers online.
It 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 offers some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you ask for high-quality 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 Simi Valley?Prices aren't displayed on Milgard's website, but it offers different kinds of windows at varying price points. You can ask for a free quote on its website for more information about pricing.

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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Award-winning company
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No lifetime warranty
Renewal by Andersen has the best availability in Simi Valley. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of industry experience, and it currently provides services to nearly every state except Mississippi and West Virginia. The provider has a lot of glowing reviews from customers on online review websites.
It 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 that Renewal by Andersen offers, 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 Simi Valley?Though prices are not available on Andersen's website, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. You can inquire about a free quote on its website for more information about the cost.

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 provides the best warranty in Simi Valley. Universal has been in the window business for around 20 years. Many positive reviews on customer review websites back the provider's reputation.
You may want to consider choosing Universal if you're looking for a company that has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsUniversal Windows Direct offers some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to mention that you want high-quality Energy Star windows when inquiring. The 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.
How much does Universal Windows Direct cost in Simi Valley?Even though prices are not available on Universal's website, 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. For more detailed information on the cost, you can inquire about a quote from the company.
We aim to remain unbiased and transparent by listing pros and cons for each installer. Additionally, any partnerships do not influence our rankings.
More Window Replacement Companies in Simi Valley
Economy Glass Co West Inc
Santa Monica, CA-
Consistent Workmanship
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Arrives on Time
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Helps Educate Customers
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No-Hassle Pricing
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 Windows
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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-
No-Hassle Pricing
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Award-Winning
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Helps Educate Customers
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Consistent Workmanship
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 Window Designs
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Aluminum Window Frames
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Double-Hung
The Window Factory
Simi Valley, CA-
Helps Educate Customers
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Price Transparency
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Gives to charity
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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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Commercial Windows
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Double-Hung
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Sliding Glass
Tashman Home Center
West Hollywood, CA-
Good Customer Service
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Price Transparency
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Helps Educate Customers
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Award-Winning
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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Business Windows
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Double-Hung
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Sliding Glass
Preferred Glass And Windows
Simi Valley, CA-
Award-Winning
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Dependable Service
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Helps Educate Customers
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Free Quotes
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-
Award-Winning
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Dependable Service
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Good Customer Service
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Educational Website
Services Offered
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Glass Showers
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Custom Window Designs
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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-
Educational Website
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No-Hassle Pricing
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Reliable Appointment Windows
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Free Quotes
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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Aluminum Window Frames
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Sliding Glass
Quality Windows & Doors
Oxnard, CA-
Free Quotes
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Locally Recognized for Quality
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Price Transparency
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Educational Website
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-
Educational Website
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No-fee Quotes
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Price Transparency
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Good Customer Service
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-
Consistent Workmanship
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Educational Website
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Price Transparency
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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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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-
Reliable Service
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No-fee Quotes
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No-Hassle Pricing
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Timely 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-
Price Transparency
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Consistent Workmanship
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Good Customer Service
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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-
No-Hassle Pricing
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Consistent Workmanship
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Award-Winning
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Arrives on Time
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-
Free Quotes
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Award-Winning
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Excellent Customer Service
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Price Transparency
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
American Vision Windows
Simi Valley, CA-
Dependable Service
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Helps Educate Customers
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Free Quotes
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Price Transparency
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-
Free Quotes
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Reliable Service
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Good Customer Service
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Price Transparency
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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Commercial Windows
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Double-Hung
Ron's Glass & Screen
Somis, CA-
No-fee Quotes
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Good Customer Service
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No-Hassle Pricing
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 Windows
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Aluminum Window Frames
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Business Windows
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Sliding Glass
Pure View Window & Door, Inc.
Ventura, CA-
Good Customer Service
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Reliable Appointment Windows
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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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Fast Delivery
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Architectural Glass
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Sliding Glass
West Coast Sash & Door Inc
Ventura, CA-
Excellent Customer Service
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Free Quotes
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No-Hassle Pricing
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Dependable Service
Services Offered
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Custom Windows
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Residential Windows
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Commercial Windows
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Double-Hung
Jon's Window & Awning, Inc.
Burbank, CA-
No-fee Quotes
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Helps Educate Customers
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Excellent Customer Service
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Arrives on Time
Services Offered
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Custom Window Designs
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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-
Good Customer Service
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Free Quotes
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Price Transparency
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Award-Winning
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
How Installing Energy-Efficient Windows in Simi Valley Saves You Money
When you switch to energy-efficient windows, you may see some benefits, such as:
- Protect your investment: When you have an older home, your windows could also be outdated or damaged. Upgrading your windows is an important part of maintaining your property and its real estate value.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out damaging UV rays, reducing fading of your furniture, carpet and other valuables.
- Decrease your carbon footprint: Because energy-efficient windows improve the insulation in your house, you can cut your indirect greenhouse gas emissions by about 12%, according to Energy Star.
- Save on energy bills: According to the Department of Energy, heat gained or lost through windows accounts for about 25-30% of residential energy use. Upgrading to energy-efficient models can help decrease how much you have to pay, therefore saving you about 12% more on your bills.
Estimated Cost of Window Replacement in Simi Valley
Windows come in varying purposes, styles and shapes, so costs and services will vary greatly depending on several factors. Below, we describe the typical cost and services that you can get from window installation companies.
How Much Do New Windows Cost?
Although the average to replace a single window is around $600, it can range from $200 to $1,200. These estimates vary based on the specifics of your installation, such as material, the location of your home, type, size, number of windows and more.
With windows, efficiency is one of the most important factors for many homeowners. High efficiency windows may cost more off the bat, but by increasing the efficiency of your home — particularly 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 Simi Valley homeowners $572+ per year after replacing single-pane windows.
The cost of your window installation will also vary based on the kind of window material you choose for the frames. Wood windows are generally the most expensive, although it depends if they are 100% wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are shown to be more efficient.
What Services do Window Installers Offer?
The first thing to ask yourself when planning on installing new windows is: Should you get a full-frame installation or a pocket installation?
Full-frame installations require replacing the entire window — the sill, frame, trim and all. These are most common when you want to change the style of your window or when it has significant deterioration. Full-frame installations are more time-consuming and will increase overall costs. Pocket installations (also known as retrofits) are when you replace a window without replacing the frame. Pocket installations are on the simpler end and won't carry as large a bill, but you can't do this kind of installment if you have any pre-existing rot or water damage.
If you're still trying to decide which type of installation to get, you can ask your installer and get their recommendation. The choice mostly is influenced by how old the frames are and if there's any damage.
Best Affordability
Window World
- EnergyStar Partner
- Great industry reputation
- Large serice area
- 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
- Award-winning company
- No lifetime warranty
How We Choose the Best Window Installers in Simi Valley
In our search to find the most reliable, eco-friendly window installers in Simi Valley, the EcoWatch team chose the above companies as the best window installation companies in the city. We've decided to assess the top window installation companies in Simi Valley mainly based on their energy efficient offerings, as the most sustainable option also benefits homeowners in many ways. Energy Star certified windows have been shown to cut your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:
Service Area
This one is pretty self-explanatory, but we've chosen to highlight window installers that serve Simi Valley so you can find the best window installation company near you.
Work Quality
When choosing new windows, the quality and range of services often plays just as important of a role in overall efficiency and performance as the type of window you opt for. We do give window installers more points if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
Another self-explanatory yet very important review factor is customer feedback. If most customers don't have nice things to say about their service from a certain installer, you won't see it featured on EcoWatch.
Cost
Cheaper windows certainly don't mean better windows, but we know many of our readers would like to keep costs as low as possible. When analyzing the prices of providers, we gave higher points to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
As discussed previously, windows are a serious investment, so you'll want to make sure that investment is protected. Window installation companies with lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Because of Simi Valley's climate, homeowners will want to mitigate low efficiency, water damage and rot. We factored in local experience to reflect the ability of Simi Valley window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Simi Valley, CA Window Replacement FAQs
How much does window installation cost?
The average cost to install a single window ranges between $450 and $650. There are a variety of factors that affect the cost, such as local labor costs, how energy-efficient the windows are, the materials used in designing the windows, your property's location, the number of windows and styles and sizes of windows.
Which type of window is the best?
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 with the blue Energy Star certification attached to them — that means they're certified energy-efficient by the U.S. Department of Energy.
Can I install my own windows?
While you can install your own windows, doing so is time-consuming and requires a lot of handiness. Using a window replacement company can help ensure that the job is done properly and that you can avoid spending the time and effort of doing it yourself.
How do you know it's time to replace your windows?
Windows usually last 20 to 30 years, but anytime you notice damage on your windows, it's a good idea to have an expert take a look at them to determine if they are in need of a repair or replacement.
Should I replace all my windows at once?
If your windows are more than 20 years old, you probably need to replace all of them. By that point, they are often less efficient, draftier and/or more damaged than new windows. Replacing your windows all at the same time will involve less paperwork and less time.