28 Best Window Replacement Companies in Westmont, CA (Mar 2023)
Window Companies Near Me
If you're looking to get new windows, our guide to the top window installation companies can help.
We analyzed all the top window installers in Westmont and selected the top 28 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
The EcoWatch Reviews team is all about helping Westmont homeowners find eco-conscious solutions for their homes. When it's the middle of summer, your outdated and leaky windows could be making your home more difficult to cool and more uncomfortable for you.
Replacement windows improve the insulation in your home, not only making you more comfortable during extreme temperatures, but also saving you money and helping the environment.
Unlike other review sites, EcoWatch ranks window installation companies on energy efficiency while also considering cost, customer satisfaction and service area.
Excellent Reputation
Milgard Windows & Doors
- EnergyStar Partner
- Wide network of installers
- Lifetime warranty available
- Entails hiring third-party contractors
Best Affordability
Window World
- Low prices relative to competitors
- Large serice area
- Lifetime warranty
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Award-winning company
- Great industry reputation
- Manufactures products in-house
- More expensive than competition
Best Window Replacement Companies in Westmont
The EcoWatch Reviews team assessed dozens of installers across the country to find the best window replacement companies for our readers. We assessed the installers on their energy-efficient offerings, coverage area, local experience, customer service, price and more.

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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Entails hiring third-party contractors
Milgard Windows & Doors is a family-owned and -operated window replacement company, which primarily serves the West Coast. This company has 60 years of experience in the windows business, and it has established itself as one of the most respected companies in Westmont. Its reputation is backed by hundreds of positive reviews on customer review websites.
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 is an Energy Star partner offering 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 Milgard representative when inquiring about services.
How much does Milgard Windows & Doors cost in Westmont?Prices aren't listed on Milgard's website, but it offers different kinds of windows at varying price points. Getting a free quote on its website is the best way to get more accurate information.

Window World
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Low prices relative to competitors
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Large serice area
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Lifetime warranty
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Quality of service will depend on your area
Window World has windows expertise in Westmont. Window World has around 27 years of experience in the windows industry, and it currently provides services to 200 locations nationwide. Many positive reviews on customer review websites 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 WindowsWindow World is an Energy Star partner and offers a variety of energy-efficient windows. 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 Window World representative when inquiring about services.
How much does Window World cost in Westmont?Window World does not list prices 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 request a free quote from the company.

Renewal by Andersen
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Award-winning company
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Great industry reputation
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Manufactures products in-house
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More expensive than competition
Renewal by Andersen provides the best availability in Westmont. Andersen has around 27 years of experience in the windows industry, and it currently provides services to nearly every state except Mississippi and West Virginia. Hundreds of positive reviews on customer review websites back the provider's reputation.
Andersen may be the company for you if you're looking for one 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's commitment to sustainability shows in its energy-efficient window offerings. 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 Westmont?Prices aren't listed 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 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 is a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. This provider has 20 years of experience in the windows business, and it has become one of the most respected companies in Westmont. Hundreds of positive reviews from customers online back the company's reputation.
It has an industry-leading warranty covering products, parts and workmanship for life.
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 make sure you mention that you want Energy Star windows when inquiring.
How much does Universal Windows Direct cost in Westmont?Prices are not available on Universal's website because the cost of window installment varies greatly based on how many and what type(s) of windows you need. However, 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. Requesting a free quote on its website is the best way to get more accurate pricing information.
We've recommended installers with good reputations, but note that these are national companies, so the quality of service may differ depending on your local crew. We have tried to remain unbiased and transparent by listing pros and cons for every company reviewed.
More Window Replacement Companies in Westmont
The Glass Guru
Torrance, CA-
No-fee Quotes
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Timely Service
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No-Hassle Pricing
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Good Customer Service
Services Offered
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Glass Showers
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Tempered Glass
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Custom Windows
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Aluminum Window Frames
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Full-Service Installations
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Business Windows
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Double-Hung
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Sliding Glass
Economy Glass Co West Inc
Santa Monica, CA-
Helps Educate Customers
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Excellent Customer Service
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No-Hassle Pricing
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Dependable 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 Windows
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Full-Service Installations
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Double-Hung
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Sliding Glass
Broadway Glass & Mirror, Inc.
Long Beach, CA-
Consistent Workmanship
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Educational Website
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Reliable Appointment Windows
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Price Transparency
Services Offered
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Double-Hung
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Doors
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Full-Service Installations
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Custom Window Designs
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Residential Windows
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Commercial Windows
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Sliding Glass
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Aluminum Window Frames
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Glass Showers
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Architectural Glass
Smart Window Company
Torrance, CA-
Dependable Service
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Good Customer Service
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Helps Educate Customers
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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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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
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Double-Hung
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Sliding Glass
A New View Windows & Doors Inc.
Anaheim, CA-
Consistent Workmanship
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Educational Website
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Award-Winning
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No-fee Quotes
Services Offered
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Glass Showers
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Energy-Efficient Options
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Custom Window Designs
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Business Windows
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Double-Hung
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Sliding Glass
Windows N' Things
Canoga Park, CA-
Price Transparency
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Good Customer Service
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Consistent Workmanship
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Educational Website
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
Select Home Improvements
Anaheim, CA-
No-Hassle Pricing
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Helps Educate Customers
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Free Quotes
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Consistent Workmanship
Services Offered
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Residential Windows
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Energy-Efficient Options
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Tempered Glass
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay Windows
Metropolitan High Performance Windows
Anaheim, CA-
Award-Winning
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Dependable Service
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Reliable Appointment Windows
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No-Hassle Pricing
Services Offered
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Fast Delivery
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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
Golden Glass
Fullerton, CA-
Educational Website
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Good Customer Service
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Timely Service
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No-Hassle Pricing
Services Offered
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Residential Windows
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Architectural Glass
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Heavy Glass
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Tempered Glass
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Doors
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Custom Windows
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Business Windows
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Double-Hung
Tashman Home Center
West Hollywood, CA-
Educational Website
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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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Fast Delivery
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Custom Windows
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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
Anaheim Glass
Anaheim, CA-
Locally Recognized for Quality
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Timely Service
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Consistent Workmanship
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Good Customer Service
Services Offered
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Custom Window Designs
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Fast Delivery
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Residential Windows
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Commercial Windows
California Window Masters
Irvine, CA-
Free Quotes
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Consistent Workmanship
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No-Hassle Pricing
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Timely Service
Services Offered
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Fast Delivery
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Custom Window Designs
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Residential Windows
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Sliding Glass
Bodie's Glass Service
Westminster, CA-
Educational Website
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Price Transparency
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No-fee Quotes
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Arrives on Time
Services Offered
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Glass Showers
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Residential Windows
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Custom Windows
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Business Windows
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Sliding Glass
Window King
Huntington Beach, CA-
No-fee Quotes
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Timely Service
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Excellent Customer Service
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Helps Educate Customers
Services Offered
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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
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Sliding Glass
Tesla Windows
Buena Park, CA-
Educational Website
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No-Hassle Pricing
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Timely Service
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Free Quotes
Services Offered
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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
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Sliding Glass
Anytime Windows and Doors
North Hollywood, CA-
Dependable Service
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Helps Educate Customers
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Good Customer Service
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Reliable Appointment Windows
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
GOLDEN BEAR GLASS & WINDOWS LLC
Los Angeles, CA-
Good Customer Service
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Reliable Service
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Helps Educate Customers
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Price Transparency
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 Windows
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Aluminum Window Frames
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Business Windows
American Window Company
Covina, CA-
Helps Educate Customers
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Free Quotes
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Reliable Service
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Price Transparency
Services Offered
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Custom Windows
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Aluminum Window Frames
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Energy-Efficient Options
Cal Replacement Window Company of Orange County
Anaheim, CA-
Excellent Customer Service
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Locally Recognized for Quality
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No-fee Quotes
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Helps Educate Customers
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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Sliding Glass
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Aluminum Window Frames
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Architectural Glass
Abel Glass & Screen, Inc.
South Gate, CA-
Free Quotes
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Helps Educate Customers
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Good Customer Service
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Reliable Service
Services Offered
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Residential Windows
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Energy-Efficient Options
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Tempered Glass
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Custom Windows
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Commercial Windows
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Sliding Glass
Frontier Windows & Doors
Canoga Park, CA-
Timely Service
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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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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
Hardy Windows - Orange County
Placentia, CA-
Locally Recognized for Quality
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No-Hassle Pricing
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Good Customer Service
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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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Custom Window Designs
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Aluminum Window Frames
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Commercial Windows
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Sliding Glass
Can-Do Windows & Doors
Costa Mesa, CA-
Free Quotes
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Educational Website
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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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Energy-Efficient Options
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Custom Windows
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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
Mancino Door & Window, Inc.
Glendora, CA-
No-fee Quotes
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Good Customer Service
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No-Hassle Pricing
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Educational Website
Services Offered
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Residential Windows
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Architectural Glass
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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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Sliding Glass
Window World of Los Angeles
Covina, CA-
No-Hassle Pricing
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Charitable Giving
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Educational Website
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Consistent Workmanship
Services Offered
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Custom Windows
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Architectural Glass
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Sliding Glass
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Double-Hung
Window World of Orange County
Anaheim, CA-
Charitable Giving
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Good Customer Service
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Reliable Service
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Helps Educate Customers
Services Offered
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Custom Windows
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Architectural Glass
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Sliding Glass
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Double-Hung
Window Professors
San Dimas, CA-
Helps Educate Customers
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No-fee Quotes
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Dependable Service
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Arrives on Time
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
Progressive Insulation & Windows
Chatsworth, CA-
Reliable Service
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Award-Winning
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Helps Educate Customers
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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
How Installing Energy-Efficient Windows in Westmont Saves You Money
By upgrading to energy-efficient windows, you can benefit in several ways, such as:
- Reduce your carbon footprint: Reducing the amount of energy you use also lowers your carbon emissions. You could reduce it by about 117 pounds.
- Save money on energy bills: Switching to energy-efficient windows reduces your energy bills by about 12% since you use less energy.
- Protect your investment: If you have a relatively old home, your windows are most likely in need of replacement. Upgrading your windows can improve the insulation in your home and also help raise the value of your home if you decide to sell.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which not only insulate your home better, but also filter out harmful UV rays, preventing fading of your furniture, carpet and other valuables.
Estimated Cost of Window Replacement in Westmont
Windows come in different purposes, shapes and styles, so costs and services will vary considerably based on several factors. Below, we detail the average cost and services that you can get from window installers.
How Much Do New Windows Cost?
The typical cost to install one window is about $600 but can range from $200 to $1,200. Costs will differ significantly depending on the quality of your products, the number of windows you need, the current condition of your home and your location. A lot of window companies also offer replacement door installations and other add-ons like coating, baths, shutters and more. These extra services will increase your overall project costs.
With windows, efficiency is one of the most important factors for most homeowners. Efficient windows may cost more upfront, but by increasing the efficiency of your home — particularly if you live in a hot climate — they can give you decades of energy savings. According to Energy Star, buying certified energy-efficient windows can save Westmont homeowners $509+ per year after replacing single-pane windows.
Costs will also vary based on the material of your frame. Aluminum frames have the lowest price. They're sturdy, light and maintenance-free, but provide poor insulation. Vinyl frames are somewhat expensive and provide good insulation. Composite frames made using wood fibers encased in plastic also provide good insulation and are moderately expensive. Wood frames are the most expensive 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 thing to ask yourself when planning to replace your windows is: Should you get a full-frame installation or a pocket installation?
Full-frame installations involve replacing the full window, including the trim, frame and sill. Full-frame installations are necessary when you want a new style or your window has significant rot. Because full-frame installations are more involved, they will increase the overall cost. Pocket installations are simpler and won't carry as large a bill because they entail merely replacing the window within its existing frame. But if the frame has any damage or deterioration, you may have to get a full-frame installation instead.
If you're still trying to decide which type of installation you need, you can consult with your provider and get their recommendation. The decision mostly depends on how old the frames are and if there's any damage.
Excellent Reputation
Milgard Windows & Doors
- EnergyStar Partner
- Wide network of installers
- Lifetime warranty available
- Entails hiring third-party contractors
Best Affordability
Window World
- Low prices relative to competitors
- Large serice area
- Lifetime warranty
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Award-winning company
- Great industry reputation
- Manufactures products in-house
- More expensive than competition
How We Choose the Best Window Installers in Westmont
EcoWatch reviews are different from most reviews, as we assess these companies through a sustainability lens. We have decided to evaluate the best window installation companies in Westmont primarily based on energy efficiency, as it's the most sustainable option and the best one for homeowners. 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 self-explanatory, but we've chosen to highlight window installers that serve a wide variety of states and cities so you can find the best window installation company near you.
Work Quality
When it comes to new windows, the quality and range of services often plays just as important of a role in insulation and performance as the brand of window you get. 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
We analyzed patterns in recent online reviews to determine the companies with the most consistent customer satisfaction. Customer satisfaction may be the factor we place the most value on, as it reflects the quality of services across most other categories, including warranty, cost, quality of installation, professionalism, quality of parts and more.
Cost
This one is a give-and-take: similar to other services, cheap window installers won't always provide the most quality service. Still, we want to ensure we're highlighting companies that offer a wide range of price and financing options so they're accessible to most homeowners.
Warranty
As discussed previously, windows are a sizable investment, so you'll want to make sure that investment is protected. Window installation companies with lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Lastly, we like to see companies that have been in the industry for quite some time. Window installation companies that have more experience earn higher rankings by our standards. We like to see at least ten years of experience.
Westmont, CA Window Replacement FAQs
How much does window installation cost?
The national average cost of replacing a single window is around $600 but can range between $200 and $1,200, depending on several factors. The price is usually dependent on the size of the window, the type and material of the window and the location of your property. Also, remember that energy-efficient windows may cost more initially but can save you a decent amount of money a year in energy bills.
What are the types of windows?
There are several different kinds of windows you can get for your home, such as double-hung and single-hung windows, slider windows, awning windows, transom windows, picture windows, casement windows and bay windows.
When do I need to use a window installation company?
Unless you're handy and have all of the necessary tools to replace your own windows, we recommend hiring a professional. The window installation process is quite involved and can take anywhere from four to six hours for one window. Although it's tempting to try to do it yourself to save money, hiring a company is a faster, more efficient and safer alternative.
How long does it usually take to install windows?
Each window takes about 30 minutes to install depending on the kind of window. However, the window installation can be a two-day job — or more — if you need to have a lot of windows installed.
Should I replace all my windows at once?
If your windows are more than 20 years old, it's most likely time to replace all of them. By that point, they are usually 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.