20 Best Window Companies in Monrovia, CA (2023 Reviews)
When you need to upgrade your windows, our guide to the top window installation companies can help you find the provider for you.
We analyzed all the top-rated window companies in Monrovia and selected the best 20 based on:
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Customer reviews
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Window installation expertise
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Popularity with home-owners like you
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Updated September 15, 2023
Why you can trust EcoWatch
A guide on the top window installation companies in Monrovia may not seem like the most riveting article on EcoWatch, but trust us, windows have a more direct impact on your life than you might realize. If you have traditional, outdated windows, your HVAC system could be working overtime to heat or cool your home. This means spending more on power bills.
Fortunately, helping you save energy with upgraded windows also aligns with our goals of conserving energy and the resources it takes to produce it.
Unlike other sites, EcoWatch ranks window companies on energy efficiency while also factoring in cost, customer satisfaction and service area.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
Best Window Installation & Replacement Companies in Monrovia
The EcoWatch team researched dozens of providers that serve the Monrovia area to find the best window installation companies that fit our standards. We assessed the installers on energy-efficient offerings, local experience, coverage area, customer service, price and more.

Window World
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EnergyStar Partner
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Large serice area
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Low prices relative to competitors
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Great industry reputation
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Lifetime warranty
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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. This window installation company has been operating since 1995 and currently services 200 locations nationwide. The company has a lot of glowing reviews from customers on online review websites.
You may want to consider opting for Window World 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.
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 ask your Window World representative when inquiring about services.
How much does Window World cost in Monrovia?Prices are not available on Window World’s website since 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 detailed information on the cost, you can receive 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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Entails hiring third-party contractors
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Limited additional services
Milgard Windows & Doors is a family-owned and -operated window replacement company, which primarily serves the West Coast. This window installation company has been operating since 1962 and currently services Anaheim, Riverside, Los Angeles, San Bernardino and Orange counties. The company has a lot of glowing reviews from customers on online review websites.
You may want to consider opting for Milgard if you're looking for a company that offers competitive pricing, a comprehensive warranty and installers that all have a minimum of 15 years of window installation experience.
Energy Efficiency of Milgard Windows & Doors WindowsMilgard Windows & Doors 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 ask your Milgard representative when inquiring about services.
How much does Milgard Windows & Doors cost in Monrovia?Prices are not available on Milgard’s website since the cost of window installment depends on how many and what type(s) of windows you need. However, it offers different kinds of windows at varying price points. For more detailed information on the cost, you can receive a quote from the company.

Renewal by Andersen
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Great industry reputation
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Award-winning company
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Member of US Green Building Council
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Manufactures products in-house
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No lifetime warranty
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More expensive than competition
Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This window installation company has been operating since 1995 and currently services nearly every state except Mississippi and West Virginia. The company has a lot of glowing reviews from customers on online review websites.
You may want to consider opting for Andersen if you're looking for a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen is an Energy Star partner 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 ask your Andersen representative when inquiring about services.
How much does Renewal by Andersen cost in Monrovia?Prices are not available on Andersen’s website since the cost of window installment depends on how many and what type(s) of windows you need. However, 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 receive a quote from the company.

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 been in the window industry for around 20 years.
If you’re looking for a company that has an industry-leading warranty covering products, parts and workmanship for life, this may be the provider for you.
Energy Efficiency of Universal Windows Direct WindowsUniversal Windows Direct is an Energy Star partner with a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make sure to mention that you want energy-efficient windows to your Universal representative when inquiring about services.
How much does Universal Windows Direct cost in Monrovia?Prices are not available on Universal’s website, as the cost of window replacement differs 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. The best way to get more accurate information is to get a free quote from the company.
Please note that the companies in this section are national, meaning the quality of the service may depend on your local team. We have tried to be unbiased and transparent by describing pros and cons for each provider.
More Window Companies in Monrovia
Renewal by Andersen of Los Angeles
Torrance, CA-
Price Transparency
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Educational Website
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Free assessment
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Good Customer Service
Services Offered
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Double-Hung
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Fast Delivery
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Commercial Windows
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Residential Windows
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Custom Window Designs
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Window Replacement
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Sliding Glass
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Glass Showers
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Stained Glass
Window World of Los Angeles
Covina, CA-
Educational Website
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Good Customer Service
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Price Transparency
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Free assessment
Services Offered
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Custom Window Designs
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Sliding Glass
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Bay Windows
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Fast Delivery
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Residential Windows
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Double-Hung
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Window Replacement
American Window Company
Covina, CA-
Educational Website
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Free assessment
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Price Transparency
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Good Customer Service
Services Offered
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Residential Windows
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Custom Window Designs
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Aluminum Window Frames
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Window Replacement
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Double-Hung
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Energy-Efficient Options
Dreamstyle Remodeling
Irwindale, CA-
Price Transparency
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Educational Website
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Free assessment
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Good Customer Service
Services Offered
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Glass Showers
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Window Replacement
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Double-Hung
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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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Bay Windows
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Fast Delivery
Home Services at The Home Depot
Baldwin Park, CA-
Educational Website
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Price Transparency
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Free assessment
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Good Customer Service
Services Offered
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Residential Windows
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Commercial Windows
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Custom Window Designs
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Fast Delivery
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Window Replacement
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Glass Showers
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Stained Glass
Slater Glass & Mirror
Arcadia, CA-
Free assessment
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Good Customer Service
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Price Transparency
Services Offered
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Window Replacement
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Residential Windows
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Custom Window Designs
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Double-Hung
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Commercial Windows
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Glass Showers
JK Glass & Mirror Inc
Baldwin Park, CA-
Free assessment
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Educational Website
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Price Transparency
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Good Customer Service
Services Offered
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Window Replacement
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Glass Showers
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Commercial Windows
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Custom Window Designs
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Residential Windows
N.E.U GLASS WINDOW REPAIR
La Puente, CA-
Free assessment
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Educational Website
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Good Customer Service
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Price Transparency
Services Offered
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Double-Hung
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Window Replacement
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Custom Window Designs
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Residential Windows
Pella Window and Door Showroom of South Pasadena, CA
S Pasadena, CA-
Free assessment
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Price Transparency
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Good Customer Service
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Educational Website
Services Offered
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Stained Glass
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Custom Window Designs
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Fast Delivery
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Aluminum Window Frames
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Residential Windows
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Bay Windows
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Double-Hung
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Window Replacement
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Commercial Windows
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Sliding Glass
Vista Window Manufacturing, Inc.
Monrovia, CA-
Free assessment
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Good Customer Service
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Price Transparency
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Educational Website
Services Offered
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Residential Windows
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Custom Window Designs
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Energy-Efficient Options
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Commercial Windows
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Sliding Glass
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Window Replacement
Pro Board Up of Pasadena
Pasadena, CA-
Free assessment
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Price Transparency
Services Offered
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Residential Windows
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Window Replacement
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Custom Window Designs
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Commercial Windows
SoCal Window Pros
San Dimas, CA-
Free assessment
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Good Customer Service
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Educational Website
Services Offered
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Residential Windows
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Window Replacement
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Custom Window Designs
All Cities Glass & Screen
Glendora, CA-
Educational Website
Services Offered
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Commercial Windows
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Residential Windows
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Glass Showers
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Window Replacement
Advance Windows & Doors
Walnut, CA-
Educational Website
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Free assessment
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Good Customer Service
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Price Transparency
Services Offered
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Window Replacement
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Bay Windows
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Double-Hung
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Tempered Glass
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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
Elite Vinyl Windows Inc.
Whittier, CA-
Good Customer Service
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Free assessment
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Price Transparency
Services Offered
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Sliding Glass
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Residential Windows
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Custom Window Designs
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Window Replacement
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Energy-Efficient Options
Family Home Improvements
Whittier, CA-
Price Transparency
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Good Customer Service
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Timely Service
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Free assessment
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Educational Website
Services Offered
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Window Replacement
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Custom Window Designs
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Full-Service Installations
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Sliding Glass
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Residential Windows
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Glass Showers
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Commercial Windows
Sears Heating and Air Conditioning
Santa Fe Springs, CA-
Educational Website
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Price Transparency
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Good Customer Service
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Timely Service
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Free assessment
Services Offered
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Fast Delivery
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Custom Window Designs
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Window Replacement
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Residential Windows
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Glass Showers
NagcoGlass
Pomona, CA-
Price Transparency
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Free assessment
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Good Customer Service
Services Offered
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Custom Window Designs
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Glass Showers
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Window Replacement
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Commercial Windows
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Energy-Efficient Options
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Residential Windows
Intex Windows Inc
Glendale, CA-
Price Transparency
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Educational Website
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Free assessment
Services Offered
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Residential Windows
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Custom Window Designs
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Window Replacement
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Aluminum Window Frames
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Commercial Windows
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Energy-Efficient Options
Foothill Door & Window
La Crescenta-Montrose, CA-
Educational Website
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Good Customer Service
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Price Transparency
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Free assessment
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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Full-Service Installations
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Window Replacement
Calculate how much you can expect to pay for window installation and replacement in Monrovia, CA using our customized window cost calculator.
Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.
How Installing Energy-Efficient Windows in Monrovia Saves You Money
When you upgrade to energy-efficient windows, you may see some benefits, such as:
- Better temperature control in your home: Residing in a chilly place like Monrovia can often mean depending on your heater to keep your house cool. Energy-efficient windows can reduce how hard your heating system needs to work to heat your home.
- Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which not only insulate your home better, but also filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
- Save money on electricity bills: The Department of Energy estimates that heat gained or lost via windows makes up about 25-30% of energy use in your home. Installing energy-efficient windows can help decrease that number, which helps you save $509 a year on your bills.
- Protect your investment: Keeping your windows up to date is an important part of maintaining your property and its value, particularly if you have an older home.
Estimated Cost of Window Replacement in Monrovia
When researching window installation, each company provides different services and prices. Let's go over some typical costs and services.
How Much Do New Windows Cost?
Generally, homeowners in Monrovia can expect that most replacement window installations will cost between $250 and $1,200, with the average cost sitting at about $600. How much it will cost you varies depending on several factors, including size, type, the location of your home, material, number of windows and more.
Keep in mind that energy-efficient windows may cost more, but Energy Star estimates the upgrade will save you between $101 and $583 a year when installing single-pane windows and between $27 and $197 a year when installing double-pane, clear glass windows. These savings vary based on your local climate, energy rates and individual home characteristics.
Another factor that affects the total cost is the material you choose for your frame. Aluminum frames are typically the least expensive and are sturdy and light, but they offer poor insulation. On the other hand, wood frames cost the most, as they are aesthetically pleasing and offer decent insulation. Fiberglass and vinyl frames provide good insulation as well and cost somewhere between the other two.
What Services do Window Installers Offer?
The first step when planning a replacement is to clarify whether you want a full-frame or pocket installation.
A full-frame installation replaces the entire window, including the sill, frame, trim and the window panes. Because this type of installation requires more time and labor, it will cost more than a pocket installation. Pocket installations (or retrofits) entail installing a new window within its existing frame, which makes pocket installations less labor-intensive and costly. However, if the frame has any damage or rot, you should opt for a full-frame installation instead.
Your window installation company can help you decide which type of installation you should get.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
How We Choose the Best Window Installers in Monrovia
EcoWatch reviews are different from other reviews since we look at these companies through a sustainability lens. Along with energy efficiency, we reviewed each installer and assigned rankings using the following methodology:
Service Area
This one is pretty self-explanatory, but we've chosen to highlight window installers that serve Monrovia so you can find the right window installation company near you.
Work Quality
When choosing new windows, the quality and variety of services often plays just as important of a role in overall efficiency and performance as the brand of window you opt for. We do rate window installers higher if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.
Customer Reviews
We analyzed patterns in recent customer feedback to find the companies with the highest rates of customer satisfaction, weighted by sample size. Customer satisfaction might be the factor we place the most value on, as it reflects the quality of services across nearly every category, including quality of installation, warranty, cost, professionalism, quality of parts and more.
Cost
Cheaper windows certainly don't mean better windows, but we know many of our readers want 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 that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Due to Monrovia's climate, homeowners will want to mitigate water damage, low efficiency and rot. We factored in local experience to reflect the ability of Monrovia window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Monrovia, CA Window Replacement FAQs
What is the typical cost to install windows in a home?
The typical cost of installing a single window can range from $450 to $650. There are many factors that affect the cost, which include the number of windows, your property's location, styles and sizes of windows, local labor costs, the materials used in designing the windows and how energy-efficient the windows are.
What type of window is the best for energy efficiency?
A window's energy efficiency depends on a number of factors, such as the quality of the installation and what kind of window it is. Look for Energy Star Certified windows — these are usually the most energy-efficient and are certified by the U.S. Department of Energy.
Can I replace my own windows?
Although you can install your own windows, doing so requires a lot of time and experience with home improvement projects. Using a window replacement company can help guarantee that the installation is done properly and that you won't have to spend the time and effort to do it yourself.
Should I replace all my windows at the same time?
If you're upgrading your windows because of energy-efficiency, replacing all of your windows together is the only way to see a noticeable difference. On the other hand, if you have just a few windows that are damaged or leaky, you can replace just those.