25 Best Window Replacement Companies in Glendora, CA (2023 Reviews)
Window Companies Near Me
Looking to upgrade your windows? We've got you covered in this list of the best window installation companies.
We analyzed all the top window installers in Glendora and selected the top 25 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 May 04, 2023
Why you can trust EcoWatch
Although environmentally 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 large 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 During the hot summer months, the last thing you want is your cool air to leak out of your outdated windows.
That's also bad news for the environment because the additional energy required by drafty windows increases your carbon footprint.
So if you're constructing a new home, renovating or replacing your windows in Glendora, this guide is the best place to get started.
Best Overall
Renewal by Andersen
- Great industry reputation
- Manufactures products in-house
- Award-winning company
- More expensive than competition
Best Affordability
Window World
- Lifetime warranty
- Great industry reputation
- EnergyStar Partner
- 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 Window Replacement Companies in Glendora
The EcoWatch team evaluated many window installation companies across Glendora to narrow our list down to the best ones. The installers in this article scored best in our review categories, such as energy-efficient offerings, availability, local expertise, price, customer service and more.

Renewal by Andersen
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Great industry reputation
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Manufactures products in-house
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Award-winning company
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More expensive than competition
Renewal by Andersen has the best availability in Glendora. This window installation company has been operating since 1995 and currently serves nearly every state except Mississippi and West Virginia. The provider has hundreds of positive reviews from customers online.
Andersen may be the company for you if you're interested in 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 WindowsThere are a wide variety of window types available from Renewal by Andersen, 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 Glendora?Andersen doesn't have any cost information displayed on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. For more detailed information on the cost, you can request a quote from the company.

Window World
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Lifetime warranty
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Great industry reputation
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EnergyStar Partner
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Quality of service will depend on your area
Window World provides windows expertise in Glendora. This provider has 27 years of experience in the windows industry, and it has established itself as one of the most reputable companies in the business.
If you're looking for a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital, Window World may be the perfect provider for you.
Energy Efficiency of Window World WindowsWindow World's commitment to sustainability can be seen 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 Glendora?Window World doesn't have any cost information listed 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 Glendora. It's a family-owned and -operated window replacement company, which primarily serves the West Coast. Milgard has around 60 years of experience in the window replacement business. The company has plenty of positive reviews from customers online.
Milgard may be the company for you if you're interested in one 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 is an Energy Star partner and has a variety of energy-efficient windows. Note that not all of the company's windows are Energy Star certified, so make sure to ask your Milgard representative when inquiring about services.
How much does Milgard Windows & Doors cost in Glendora?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.

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. Universal has around 20 years of experience in the windows industry, and it currently serves 27 states nationwide. Many positive reviews from customers online back the provider's reputation.
You may want to consider picking Universal if you're looking for a installer 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 Glendora?Prices aren't available on Universal's 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. You can request a free quote on its website for more information about the cost.
We've recommended companies with good reputations, but note that some national companies have independently owned locations in Glendora, so the quality of service may depend on your local crew. We have tried to be unbiased and transparent by including pros and cons for each company we reviewed.
More Window Replacement Companies in Glendora
Window Installation Diamond Bar | Call Today
Diamond Bar, CA-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Energy-Efficient Options
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Glass Showers
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Stained Glass
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Residential Windows
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Fast Delivery
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Commercial Windows
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Double-Hung
Design Windows and Doors Inc.
Ontario, CA-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Energy-Efficient Options
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
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Double-Hung
Screen Weaver, Inc.
Covina, CA-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Glass Showers
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
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Fast Delivery
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Commercial Windows
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Double-Hung
Dreamstyle Remodeling
Irwindale, CA-
Good Customer Service
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Award-Winning
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Glass Showers
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Full-Service Installations
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Residential Windows
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Fast Delivery
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Double-Hung
Budget Blinds of Rancho Cucamonga
Rancho Cucamonga, CA-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Glass Showers
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Aluminum Window Frames
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Commercial Windows
Mancino Door & Window, Inc.
Glendora, CA-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Sliding Glass
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Custom Window Designs
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Full-Service Installations
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Residential Windows
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Aluminum Window Frames
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Fast Delivery
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Commercial Windows
A C & R Construction, Plumbing & Electrical
La Habra, CA-
Good Customer Service
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Award-Winning
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Glass Showers
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Commercial Windows
Window World of Los Angeles
Covina, CA-
Good Customer Service
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Award-Winning
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Double-Hung
American Window Company
Covina, CA-
Good Customer Service
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Award-Winning
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Energy-Efficient Options
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
Sears Window Replacement
Montclair, CA-
Good Customer Service
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Award-Winning
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Energy-Efficient Options
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Glass Showers
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Stained Glass
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Residential Windows
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Double-Hung
W.C. Heritage Shutters and Blinds
La Habra, CA-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Glass Showers
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Commercial Windows
J. R. Door & Window Inc
Upland, CA-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Aluminum Window Frames
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Double-Hung
Home Services at The Home Depot
Upland, CA-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Glass Showers
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
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Fast Delivery
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Commercial Windows
Windshield Express
Covina, CA-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
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Commercial Windows
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Double-Hung
East Whittier Glass & Tinting
La Habra, CA-
Good Customer Service
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Educational Website
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Price Transparency
Services Offered
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Glass Showers
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Commercial Windows
Madison Window Products
Rancho Cucamonga, CA-
Good Customer Service
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Free assessment
Services Offered
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Energy-Efficient Options
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Tempered Glass
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Double-Hung
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Commercial Windows
Gotcha Covered of Rancho Cucamonga
Rancho Cucamonga, CA-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Glass Showers
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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
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Commercial Windows
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Double-Hung
Vista Window Manufacturing., Inc.
Monrovia, CA-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Energy-Efficient Options
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Glass Showers
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Commercial Windows
Window Professors
San Dimas, CA-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Energy-Efficient Options
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Double-Hung
Precision Door Services of Southern California
San Dimas, CA-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Energy-Efficient Options
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Custom Window Designs
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Residential Windows
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Commercial Windows
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Double-Hung
Home Services at The Home Depot
El Monte, CA-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Glass Showers
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Bay Windows
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Custom Window Designs
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Stained Glass
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Residential Windows
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Fast Delivery
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Commercial Windows
Excellent Blinds and Shutters | Window Treatments
Ontario, CA-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Commercial Windows
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Residential Windows
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Custom Window Designs
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Fast Delivery
Home Services at The Home Depot
Covina, CA-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Glass Showers
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Bay Windows
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Custom Window Designs
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Stained Glass
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Residential Windows
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Fast Delivery
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Commercial Windows
Dome Window Installation Alhambra
Alhambra, CA-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Glass Showers
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
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Double-Hung
Home Services at The Home Depot
Baldwin Park, CA-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Glass Showers
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Bay Windows
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Custom Window Designs
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Stained Glass
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Residential Windows
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Fast Delivery
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Commercial Windows
How Installing Energy-Efficient Windows in Glendora Saves You Money
Switching to energy-efficient windows can improve the comfort of your home and help you save on electricity bills. Here's more information on how upgrading your windows could help you:
- Decrease your carbon footprint: By using less energy once upgrading to energy-efficient windows, you'll also be decreasing your carbon dioxide emissions by about 12%, according to Energy Star.
- Protect your investment: When you have an older home, your windows could also be outdated or drafty. Keeping your windows up to date is an important part of maintaining your property and its real estate value.
- Save on power bills: Upgrading to energy-efficient windows reduces your energy bills by about 12% because you use less energy.
- Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which filter out damaging UV rays, reducing fading of your furniture, carpet and other valuables.
Estimated Cost of Window Replacement in Glendora
Windows come in varying shapes and sizes, so costs and services will differ considerably. Here are the typical costs and services that you can find from window installers.
How Much Do New Windows Cost?
Generally, Glendora homeowners can anticipate their replacement window installations to range from $250 to $1,200. The most common installations sit at approximately $600. But costs will vary significantly based on your location, the quality of your products, the current condition of your home and the number of windows you need. A lot of window companies also offer replacement door installations and other add-ons like coating, shutters, baths and more. These extra services will increase overall project costs.
It's important to keep in mind that windows with higher efficiency may cost more upfront but can save you hundreds of dollars via returns on your energy bills. Investing in certified energy-efficient windows can save Glendora homeowners $509+ a year when replacing single-pane windows.
Getting free quotes from several installers is the best way to figure out which one is right for you.
What Services do Window Installers Offer?
There are generally two kinds of window replacement services: full-frame and pocket installations.
Full-frame installations involve replacing the complete window, including the sill, frame and trim. Full-frame installations are necessary when you want a new style or your window has significant rot or deterioration. Full-frame installations are more involved and will raise overall costs. A pocket installation entails replacing a window without taking out the entire frame, which tends to be less expensive than a full-frame installation.
If you're unsure which window installation service you need, your installer can assist you. Generally, the decision depends on factors like the age and condition of the home, the type of building material, budget and time restrictions.
Best Overall
Renewal by Andersen
- Great industry reputation
- Manufactures products in-house
- Award-winning company
- More expensive than competition
Best Affordability
Window World
- Lifetime warranty
- Great industry reputation
- EnergyStar Partner
- 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
How We Choose the Best Window Installers in Glendora
The EcoWatch Reviews team differs from other reviewers since we assess these companies through a sustainability lens. We have assessed the best window installation companies in Glendora mainly based on energy efficiency, as it's the most sustainable option and the best one for homeowners. Energy-efficient windows can reduce 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 installation companies that serve Glendora so you can find a quality window installation company near you.
Work Quality
We're willing to bet that you're looking for professionals who do a great job installing windows. We've vetted each installer included on this list to ensure its contractors are well-qualified and that the company has gotten tons of positive customer feedback to vouch for its service.
Customer Reviews
Customer feedback is another super important review factor. If most customers don't have nice feedback about their service from a certain company, it won't be featured on EcoWatch.
Cost
This one is a give-and-take: similar to most services, cheap window installers won't always provide the highest quality service. Still, we want to ensure we're highlighting companies that provide a wide range of price and financing options so they're accessible to most homeowners.
Warranty
Protecting your investment in new windows is important to many homeowners. For that reason, window installation companies that offer lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Last but not least, we like to see companies that have been in the industry for a while. Window installers that have more experience will earn higher rankings by our standards. We like to see at least ten years of experience.
Glendora, CA Window Replacement FAQs
What is the average cost to install new windows?
The national average cost to install a window is around $600 but can range from $200 to $1,200, depending on a variety of factors. The price is generally dependent on the location of your property, the type and material of the window and the size of the window. Also, keep in mind that energy-efficient windows may cost more initially but can save you hundreds of dollars a year in energy bills.
Which type of window should I get?
Generally, double-pane windows are more efficient than single-pane windows and windows that don't open are more efficient than windows that do. To be sure you're getting the most energy-efficient windows, look for models with the blue Energy Star certification attached to them — this means they're certified energy-efficient by the U.S. Department of Energy.
Can you replace your own windows?
While it is possible to 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 installation is done properly and that you won't have to spend the time and effort to do it yourself.
How do you know it's time to replace your windows?
Windows typically have a lifespan of 20 to 30 years, but anytime you see damage on your windows, it's a good idea to have them checked by an expert to see if they need any repairs or replacements.