20 Best Window Companies in Duarte, CA (2025 Reviews)
Thinking about upgrading your home's windows? We’ve got you covered in this list of the best window installation companies.
We analyzed all the top-rated window companies in Duarte and selected the best 20 based on:
Customer reviews
Window installation expertise
Popularity with home-owners like you
Please enter a valid 5-digit zip code!
Why you can trust EcoWatch
A guide on the top window replacement companies in Duarte may not seem like the most captivating article on the EcoWatch site, but trust us, windows impact your life more than you might think. Drafty, leaky windows could lead to spending more on electric bills during the winter or summer months.
Thankfully, helping you save energy with efficient windows also helps our goals of reducing energy usage for the environment.
We’ve made this list of the best installation companies to help you in your research, so you can not only benefit from brand-new windows, but also save money on your electric bills.
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 Duarte
The EcoWatch Reviews team assessed several window providers across Duarte to narrow our list down to the best ones. The providers we’ve mentioned in this article passed our review standards for energy-efficient offerings as well as local expertise, customer service, price and beyond.

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 is the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has about 27 years of experience in the windows industry, and it currently provides services to 200 locations nationwide.
It 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’s commitment to sustainability shows 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 Duarte?Prices aren’t available on Window World’s website, but it's known for offering some of the most affordable window installations around. The best way to get more accurate pricing information is to receive a free quote from the company.

Milgard Windows & Doors
EnergyStar Partner
Wide network of installers
Lifetime warranty available
Entails hiring third-party contractors
Limited additional services
Milgard Windows & Doors is a family-owned and -operated window replacement company, which primarily serves the West Coast. Milgard has about 60 years of experience in the windows industry, and it currently provides services to Anaheim, Riverside, Los Angeles, San Bernardino and Orange counties.
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’s commitment to sustainability shows in its energy-efficient window offerings. 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 Duarte?Prices aren’t available on Milgard’s website, but it offers different kinds of windows at varying price points. The best way to get more accurate pricing information is to receive a free quote from the company.

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 is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the windows industry, and it currently provides services to nearly every state except Mississippi and West Virginia.
It uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.
Energy Efficiency of Renewal by Andersen 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 Duarte?Prices aren’t available 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. The best way to get more accurate pricing information is to receive a free quote from the company.
One thing to note is that the following companies are national, meaning the quality of the service may vary depending on your local crew. We have tried to stay unbiased and transparent by mentioning pros and cons for every company.
More Window Companies in Duarte
Renewal by Andersen of Los Angeles
Torrance, CAPrice Transparency
Free assessment
31,000+ projects completed
In-home or virtual consultations
Good Customer Service
Financing options available
Educational Website
Services Offered
Skylights
Window Replacement/Installation
Double-Hung
Bay Windows
Glass Doors
Hometime Windows & Doors
Glendora, CAPrice Transparency
Free assessment
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Glass Doors
Energy-Efficient Options
SoCal Window Pros
San Dimas, CAFree assessment
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Dede Windows and Doors / window replacement
Anaheim, CAFree assessment
Good Customer Service
Energy-efficient windows and doors
Educational Website
Educational website
Price Transparency
American-made vinyl
Services Offered
Custom Window Designs
Window Replacement/Installation
Vinyl Frames
Glass Doors
United Builders Windows & Doors
Rancho Cucamonga, CATimely Service
Good Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Bay Windows
Energy-Efficient Options
Window Replacement/Installation
Double-Hung
Glass Doors
Harbor Construction
Huntington Beach, CATimely Service
Educational Website
Price Transparency
Free assessment
Good Customer Service
Services Offered
Glass Doors
Double-Hung
Window Replacement/Installation
Energy-Efficient Options
Vinyl Frames
Bay Windows
Smart Window Company
Torrance, CAGood Customer Service
Educational Website
Free assessment
Price Transparency
Services Offered
Double-Hung
Tempered Glass
Window Replacement/Installation
Energy-Efficient Options
Glass Doors
Vinyl Frames
Andes windows & doors
Norco, CAFree assessment
Educational Website
Spanish-speaking
Online portfolio
Price Transparency
Offers window treatments
Good Customer Service
Services Offered
Double-Hung
Bay Windows
Glass Doors
Vinyl Frames
Window Replacement/Installation
Discount Window And Door
Redondo Beach, CAFree assessment
Good Customer Service
Price Transparency
Services Offered
Skylights
Window Replacement/Installation
Metal Frames
Energy-Efficient Options
Vinyl Frames
Glass Doors
Retro Windows and Patio Doors LLC
Fontana, CAPrice Transparency
Good Customer Service
Family-owned and operated
Educational Website
Lifetime warranty
Free assessment
Energy-efficient windows and doors
Services Offered
Window Replacement/Installation
Tempered Glass
Glass Doors
Energy-Efficient Options
California Window & Solar
Costa Mesa, CAFree assessment
Good Customer Service
Educational Website
Price Transparency
Services Offered
Metal Frames
Energy-Efficient Options
Window Replacement/Installation
Glass Doors
Vinyl Frames
Concierge Home Remodeling
Tarzana, CAPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Mancino Door & Window, Inc.
Glendora, CAPrice Transparency
Educational Website
Free assessment
Services Offered
Window Replacement/Installation
Energy Core Construction
Anaheim, CAFree assessment
Timely Service
Good Customer Service
Price Transparency
Educational Website
Services Offered
Window Replacement/Installation
Bay Windows
Energy-Efficient Options
Glass Doors
Golden Age Builders
West Hollywood, CAGood Customer Service
Unique window options
3D design and planning tool
Free assessment
Timely Service
In-home consultations
Price Transparency
Services Offered
Window Replacement/Installation
Best Windows and Doors OC
Anaheim, CAGood Customer Service
Educational Website
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Custom Window Designs
Vinyl Frames
Glass Doors
TMC Windows & Doors
Orange, CAFree assessment
Price Transparency
Good Customer Service
Services Offered
Glass Doors
Window Replacement/Installation
Save-On Glass & Screen
Westminster, CAGood Customer Service
Timely Service
Free assessment
Services Offered
Glass Showers
Mirrors
Window Replacement/Installation
Glass Doors
Window Repair
CGH Solutions - California Green Home Solutions
Van Nuys, CAEducational Website
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Vinyl Frames
Energy-Efficient Options
Glass Doors
Double-Hung
Can-Do Windows & Doors
Santa Ana, CAEducational Website
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
Wood Frames
Metal Frames
Glass Doors
Fiberglass Frames
Vinyl Frames
Energy-Efficient Options
Double-Hung
Calculate how much you can expect to pay for window installation and replacement in Duarte, 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 Duarte Saves You Money
When you switch to energy-efficient windows, you may see some benefits, such as:
- Reduce your carbon footprint: You can reduce your carbon footprint by about 12% when you install Energy Star certified windows. In Duarte, that’s about 117 pounds per year on average.
- Protect your investment: When you have an older home, your windows could also be outdated or leaky. Keeping your windows up to date is an important part of maintaining your property and its real estate value.
- Protect your valuables from fading: The low-emissivity coatings on many energy-efficient windows filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
- Save on energy bills: Because energy-efficient windows lower how much energy you need to heat or cool your home, the switch can help you save about $509 annually on your energy bills in Duarte.
Estimated Cost of Window Replacement in Duarte
Let’s go over the cost of replacing your windows and the kinds of services offered by installers.
How Much Do New Windows Cost?
Even though the average cost of installing one window is about $600, it can range anywhere from $200 to $1,200. But costs will vary significantly based on the number of windows you need, the current condition of your home, the quality of your products and your location. A lot of window companies also offer door installations and other add-ons like coating, baths, shutters and more. Additional services will increase overall project costs.
It’s also worth noting that energy-efficient windows will usually cost more upfront, but Energy Star predicts that switching out the windows on your Duarte home can mean an average energy savings of $236 to $319 per year for single-pane window replacement, or between $87 to $126 a year for double-pane windows. The amount of money you’ll save by upgrading to energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.
Requesting free quotes from several 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.
A full-frame installation replaces the full window, including the sill, frame, trim and the window panes. As this kind of installation is more involved, it will be more expensive than a pocket installation. Pocket installations (or retrofits) involve installing a new window within the existing frame, which makes pocket installations more simple and affordable. But, if the frame has any rot or deterioration, you should opt for a full-frame installation instead.
Your window installation company should be able to help you figure out which type of installation you need.
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 Duarte
The EcoWatch Reviews team differs from most reviewers because we’re examining these companies through a sustainability lens. Along with energy efficiency, we analyzed several window installers in Duarte 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 a wide variety of states and cities so you can find the right window installation company near you.
Work Quality
We’re certain that you’re looking for professionals who do a great job installing windows. We’ve vetted each installer featured in our guide to ensure its technicians are well-qualified and that the company has received a lot of positive customer feedback to vouch for its service.
Customer Reviews
Another self-explanatory yet very important review factor is customer feedback. If the majority of customers don’t have nice feedback about their experience with a certain installer, it won’t be featured on EcoWatch.
Cost
This one is a give-and-take: similar to most services, cheap window companies won’t always provide the most quality service. On the other hand, we want to ensure we’re highlighting companies that provide a spectrum of price and financing options so they’re accessible to most homeowners.
Warranty
Protecting your investment in new windows is important. For that reason, window installation companies that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Because of Duarte’s climate, homeowners will want to mitigate water damage, rot and low efficiency. We factored in local experience to reflect the ability of Duarte window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Duarte, CA Window Replacement FAQs
What is the average cost to replace windows in a home?
The typical cost to install a single window can range from $450 to $650. There are several factors that influence the cost, such as how energy-efficient the windows are, local labor costs, the materials used in designing the windows, the number of windows, your property’s location and styles and sizes of windows.
What are the most common kinds of replacement windows?
The most common kinds of windows for homes include: casement windows, slider windows, awning windows, picture windows, double-hung and single-hung windows, bay windows and transom windows.
Can you install your own windows?
If you’re handy and know how to replace a window, you may be able to install your own windows. But if you don’t have the time or experience, we recommend getting a professional to do it for you.
How do you know it’s time to replace your windows?
Windows have a typical lifespan of about 20 to 30 years. If your windows are older than that, they probably need to be replaced. Other than that, if your windows have any damage on them, or they have become difficult to operate, they may be in need of replacement.