20 Best Window Companies in Willowbrook, CA (2025 Reviews)
Looking to improve your house’s appearance? The top window replacement companies can help.
We analyzed all the top-rated window companies in Willowbrook and selected the best 20 based on:
Customer reviews
Window installation expertise
Popularity with home-owners like you
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Why you can trust EcoWatch
The EcoWatch Reviews team is all about finding solutions for eco-conscious homeowners in Willowbrook. When it’s the middle of summer, your old and leaky windows could be making your home more difficult to cool and more uncomfortable for you.
That’s also bad news for the environment, as the extra energy required by leaky windows increases your carbon footprint.
Unlike other sites, EcoWatch ranks window installation companies on energy efficiency while also considering cost, customer satisfaction and service area.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
Best Window Installation & Replacement Companies in Willowbrook
The EcoWatch team examined dozens of window companies in Willowbrook to find the top ones for our readers. We assessed the installers based on energy-efficient offerings, price, coverage area, customer service, local experience and more.

Window World
EnergyStar Partner
Large serice area
Low prices relative to competitors
Great industry reputation
Lifetime warranty
Quality of service will depend on your area
Window World provides windows expertise in Willowbrook. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has over 27 years of industry experience, and it currently serves 200 locations nationwide.
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 right provider for you.
Energy Efficiency of Window World WindowsWindow World has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want Energy Star windows when inquiring. 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 Willowbrook?Window World doesn’t have any prices displayed on its website, but it's known for offering some of the most affordable window installations around. Getting a free quote on its website is the best way to know for sure.

Milgard Windows & Doors
EnergyStar Partner
Wide network of installers
Lifetime warranty available
Entails hiring third-party contractors
Limited additional services
Milgard Windows & Doors provides the best local installation in Willowbrook. It's a family-owned and -operated window replacement company, which primarily serves the West Coast. Milgard has over 60 years of industry experience, and it currently serves Anaheim, Riverside, Los Angeles, San Bernardino and Orange counties.
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, Milgard may be the right provider for you.
Energy Efficiency of Milgard Windows & Doors WindowsMilgard Windows & Doors has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want Energy Star windows when inquiring. The company manufactures its own products, which gives it the freedom to make custom windows based on the climate. The company designs its own vinyl compounds and profiles to ensure a heat-stable product that performs as advertised.
How much does Milgard Windows & Doors cost in Willowbrook?Milgard doesn’t have any prices displayed on its website, but it offers different kinds of windows at varying price points. Getting a free quote on its website is the best way to know for sure.

Renewal by Andersen
Great industry reputation
Award-winning company
Member of US Green Building Council
Manufactures products in-house
No lifetime warranty
More expensive than competition
Renewal by Andersen provides the best availability in Willowbrook. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has over 27 years of industry experience, and it currently serves nearly every state except Mississippi and West Virginia.
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, Andersen may be the right provider for you.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want Energy Star windows when inquiring. 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 Willowbrook?Andersen doesn’t have any prices 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. Getting a free quote on its website is the best way to know for sure.
Please note that the companies in this section are national, meaning the quality of customer service may depend on your local crew. We have tried to be unbiased and transparent by mentioning pros and cons for every provider.
More Window Companies in Willowbrook
Renewal by Andersen of Orange County
Laguna Hills, CAFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Bay Windows
Glass Doors
Double-Hung
Smart Window Company
Torrance, CAFree assessment
Price Transparency
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Tempered Glass
Energy-Efficient Options
Glass Doors
Vinyl Frames
Double-Hung
Discount Window And Door
Redondo Beach, CAFree assessment
Good Customer Service
Price Transparency
Services Offered
Vinyl Frames
Skylights
Metal Frames
Window Replacement/Installation
Energy-Efficient Options
Glass Doors
Harbor Construction
Huntington Beach, CAGood Customer Service
Timely Service
Educational Website
Free assessment
Price Transparency
Services Offered
Double-Hung
Bay Windows
Window Replacement/Installation
Vinyl Frames
Glass Doors
Energy-Efficient Options
Dede Windows and Doors / window replacement
Anaheim, CAEducational Website
Free assessment
Price Transparency
Good Customer Service
Educational website
American-made vinyl
Energy-efficient windows and doors
Services Offered
Custom Window Designs
Window Replacement/Installation
Glass Doors
Vinyl Frames
Concierge Home Remodeling
Tarzana, CAFree assessment
Educational Website
Good Customer Service
Price Transparency
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Hometime Windows & Doors
Santa Ana, CAPrice Transparency
Good Customer Service
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Glass Doors
Energy-Efficient Options
California Window & Solar
Costa Mesa, CAFree assessment
Price Transparency
Good Customer Service
Educational Website
Services Offered
Metal Frames
Energy-Efficient Options
Glass Doors
Vinyl Frames
Window Replacement/Installation
SoCal Window Pros
San Dimas, CAEducational Website
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Golden Age Builders
West Hollywood, CAIn-home consultations
Price Transparency
Unique window options
3D design and planning tool
Timely Service
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Save-On Glass & Screen
Westminster, CATimely Service
Free assessment
Good Customer Service
Services Offered
Window Repair
Window Replacement/Installation
Glass Showers
Mirrors
Glass Doors
Best Windows and Doors OC
Anaheim, CAPrice Transparency
Free assessment
Educational Website
Good Customer Service
Services Offered
Vinyl Frames
Window Replacement/Installation
Glass Doors
Custom Window Designs
Window King
Huntington Beach, CAPrice Transparency
Free assessment
Educational Website
Services Offered
Energy-Efficient Options
Double-Hung
Glass Doors
Vinyl Frames
Window Replacement/Installation
TMC Windows & Doors
Orange, CAGood Customer Service
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
Glass Doors
CGH Solutions - California Green Home Solutions
Van Nuys, CAGood Customer Service
Educational Website
Price Transparency
Services Offered
Glass Doors
Window Replacement/Installation
Vinyl Frames
Double-Hung
Energy-Efficient Options
Energy Core Construction
Anaheim, CAEducational Website
Timely Service
Free assessment
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Glass Doors
Energy-Efficient Options
Bay Windows
Can-Do Windows & Doors
Santa Ana, CAFree assessment
Price Transparency
Educational Website
Services Offered
Metal Frames
Fiberglass Frames
Window Replacement/Installation
Wood Frames
Vinyl Frames
Glass Doors
Energy-Efficient Options
Double-Hung
Mancino Door & Window, Inc.
Glendora, CAPrice Transparency
Educational Website
Free assessment
Services Offered
Window Replacement/Installation
Home Upgrade Specialist Inc
Los Angeles, CAEducational Website
Timely Service
Financing options available
Good Customer Service
Free assessment
Energy-efficient products
Wide range of services
Price Transparency
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Anytime Windows and Doors
North Hollywood, CAPrice Transparency
Educational Website
Timely Service
Good Customer Service
Free assessment
Services Offered
Vinyl Frames
Energy-Efficient Options
Fiberglass Frames
Metal Frames
Glass Doors
Double-Hung
Window Replacement/Installation
Calculate how much you can expect to pay for window installation and replacement in Willowbrook, 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 Willowbrook Saves You Money
Energy-efficient windows can benefit you in several ways. Here are some reasons you may want to consider making the switch:
- Protect your valuables from fading: When you switch to energy-efficient windows that have low-emissivity coatings, your floors, carpets and furniture will be protected from fading due to their ability to filter out harmful UV rays.
- Reduce your carbon footprint: You can reduce your carbon footprint by about 12% once you install Energy Star certified windows. In Willowbrook, that’s about 117 pounds per year on average.
- Protect your investment: The older your home is, the more likely you are to benefit from switching to energy-efficient windows. Older homes usually have windows that are outdated, drafty or maybe even damaged in some way. Upgrading your windows could help increase the value of your home if you decide to sell.
- Save on power bills: Since energy-efficient windows reduce how much energy you need to heat or cool your home, the switch can help you save around $509 annually on your energy bills in Willowbrook.
Estimated Cost of Window Replacement in Willowbrook
Each window replacement company offers varying services and has different price points depending on a few factors.
How Much Do New Windows Cost?
Even though the national average cost to install a single window is about $600, it can range anywhere from $200 to $1,200. How much it will cost depends on several factors, like the location of your home, size, type, number of windows, material and more.
Keep in mind that energy-efficient windows may cost more upfront, but Energy Star estimates the upgrade will save you between $101 and $583 per year when replacing single-pane windows and between $27 and $197 per year when installing double-pane, clear glass windows. Your savings will vary depending on your local climate, energy rates and individual home characteristics.
Requesting free quotes from multiple installers is the best way to figure out which one will work best for your budget.
What Services do Window Installers Offer?
There are generally two types of window installation services: full-frame and pocket installations.
Full-frame installations entail replacing the total window, including the trim, frame and sill. You most likely need a full-frame installation when you want a new style or your window has considerable damage. Because these installations are more involved, they will increase overall costs. Pocket installations (or retrofits) involve installing a new window within the existing frame, which makes pocket installations less labor-intensive and costly. But, if the frame has any rot or deterioration, you should opt for a full-frame installation instead.
If you’re unsure which kind of window installation service you should get, your installer can help you out. In general, the decision depends on factors like the age and condition of the home, the type of building material, budget and time restrictions.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
How We Choose the Best Window Installers in Willowbrook
EcoWatch reviews differ from most reviews since we assess these companies through a sustainability lens. We have decided to assess the top window replacement companies in Willowbrook primarily based on energy efficiency, as it’s what’s best for the environment and for you as a homeowner. Energy Star certified windows have been shown to reduce your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:
Service Area
Because this is a guide for Willowbrook, we gave more points to companies that provide services to the city. There are certainly reputable providers that didn’t make our list because they wouldn’t be able to serve homeowners in Willowbrook.
Work Quality
We’re willing to bet that you’re looking for a company to do a great job installing windows. We’ve vetted each company featured in our guide to ensure its contractors are well-qualified and that the company has gotten plenty of positive customer feedback to vouch for its service.
Customer Reviews
We analyzed patterns in recent online reviews to determine the companies with the most customer satisfaction, weighted by sample size. Customer satisfaction might be the most important factor, as it indicates the quality of services across most other categories, including quality of installation, professionalism, quality of parts, warranty, cost and more.
Cost
Cheaper windows don’t necessarily mean better windows, but we know many of our readers try to keep costs low when possible. When analyzing the prices of providers, we awarded higher scores to companies with reasonable prices and accessible financing rather than “cheaper” services.
Warranty
As discussed, windows are a significant investment, so you’ll want to make sure that investment is protected. Window installation companies that give you lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Because of Willowbrook’s climate, homeowners need to be wary of low efficiency, water damage and rot. We factored in local experience to reflect the ability of Willowbrook window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Willowbrook, CA Window Replacement FAQs
How much does window installation cost?
The typical cost to replace a window ranges between $450 and $650. There are several factors that affect the price, including how energy-efficient the windows are, the materials used in designing the windows, local labor costs, styles and sizes of windows, the number of windows and your property’s location.
What are the most common kinds of replacement windows?
The most common kinds of windows for homes are casement windows, bay windows, picture windows, double-hung and single-hung windows, slider windows, awning windows and transom windows.
When should I use a window installation company?
You should hire a window installation company whenever you want to replace your windows. Installing windows is a involved process that can take a lot of time, so it’s best handled by the professionals.
How long does window installation generally take?
Since the average installation time is 30 minutes per window, about 16 windows can be installed during an 8-hour work day.