20 Best Window Companies in West Covina, CA (2025 Reviews)
When the time comes to upgrade your windows, our list of the top window installation companies can help you find the provider for you.
We analyzed all the top-rated window companies in West Covina 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 team is all about helping West Covina homeowners find eco-conscious solutions for their homes. If you have outdated, drafty windows, your AC or heating system could be working extra hard to heat or cool your home. This means spending more on electric bills.
That’s not great for your bank account or the environment, but one of the top window installation companies can help with that.
Unlike other review sites, EcoWatch ranks window 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 West Covina
The EcoWatch team evaluated dozens of installers that service the West Covina area to find the best window installation companies that fit our standards. The installers in this article passed our review standards for energy-efficient offerings as well as price, local expertise, customer service 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 around 27 years of experience in the industry, and it currently serves 200 locations nationwide. Its reputation is backed by a considerable amount of positive reviews on customer review websites.
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 caters to eco-conscious consumers by providing 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 West Covina?Window World doesn’t have any prices 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 pricing information is to request 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 around 60 years of experience in the industry, and it currently serves Anaheim, Riverside, Los Angeles, San Bernardino and Orange counties. Its reputation is backed by a considerable amount of positive reviews on customer review websites.
It offers competitive pricing, a comprehensive warranty and installers that all have a minimum of 15 years of window installation experience.
Energy Efficiency of Milgard Windows & Doors WindowsMilgard Windows & Doors caters to eco-conscious consumers by providing 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 West Covina?Milgard doesn’t have any prices listed on its website, but it offers different kinds of windows at varying price points. The best way to get more accurate pricing information is to request 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 around 27 years of experience in the industry, and it currently serves nearly every state except Mississippi and West Virginia. Its reputation is backed by a considerable amount of positive reviews on customer review websites.
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 caters to eco-conscious consumers by providing 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 West Covina?Andersen doesn’t have any prices listed 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. The best way to get more accurate pricing information is to request a free quote from the company.
Please note that the following companies are national, which means the quality of the service may depend on your local crew. We have tried to remain unbiased and transparent by mentioning pros and cons for each company.
More Window Companies in West Covina
Renewal by Andersen of Orange County
Laguna Hills, CAEducational Website
Price Transparency
Free assessment
Good Customer Service
Services Offered
Double-Hung
Glass Doors
Window Replacement/Installation
Bay Windows
Hometime Windows & Doors
Glendora, CAGood Customer Service
Price Transparency
Educational Website
Free assessment
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Glass Doors
SoCal Window Pros
San Dimas, CAGood Customer Service
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Dede Windows and Doors / window replacement
Anaheim, CAPrice Transparency
Energy-efficient windows and doors
Good Customer Service
Educational website
American-made vinyl
Free assessment
Educational Website
Services Offered
Vinyl Frames
Window Replacement/Installation
Custom Window Designs
Glass Doors
Harbor Construction
Huntington Beach, CAEducational Website
Free assessment
Good Customer Service
Price Transparency
Timely Service
Services Offered
Vinyl Frames
Window Replacement/Installation
Double-Hung
Energy-Efficient Options
Glass Doors
Bay Windows
Andes windows & doors
Norco, CASpanish-speaking
Good Customer Service
Price Transparency
Online portfolio
Free assessment
Offers window treatments
Educational Website
Services Offered
Vinyl Frames
Double-Hung
Window Replacement/Installation
Glass Doors
Bay Windows
United Builders Windows & Doors
Rancho Cucamonga, CAPrice Transparency
Good Customer Service
Free assessment
Timely Service
Educational Website
Services Offered
Window Replacement/Installation
Double-Hung
Glass Doors
Bay Windows
Energy-Efficient Options
Smart Window Company
Torrance, CAGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Window Replacement/Installation
Glass Doors
Tempered Glass
Energy-Efficient Options
Double-Hung
Vinyl Frames
Retro Windows and Patio Doors LLC
Fontana, CAEnergy-efficient windows and doors
Good Customer Service
Free assessment
Price Transparency
Family-owned and operated
Educational Website
Lifetime warranty
Services Offered
Window Replacement/Installation
Tempered Glass
Energy-Efficient Options
Glass Doors
California Window & Solar
Costa Mesa, CAFree assessment
Price Transparency
Educational Website
Good Customer Service
Services Offered
Glass Doors
Energy-Efficient Options
Window Replacement/Installation
Metal Frames
Vinyl Frames
Discount Window And Door
Redondo Beach, CAFree assessment
Good Customer Service
Price Transparency
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Skylights
Glass Doors
Vinyl Frames
Metal Frames
Mancino Door & Window, Inc.
Glendora, CAPrice Transparency
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Energy Core Construction
Anaheim, CAPrice Transparency
Timely Service
Free assessment
Educational Website
Good Customer Service
Services Offered
Bay Windows
Glass Doors
Energy-Efficient Options
Window Replacement/Installation
Best Windows and Doors OC
Anaheim, CAFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Glass Doors
Custom Window Designs
Vinyl Frames
Window Replacement/Installation
TMC Windows & Doors
Orange, CAGood Customer Service
Free assessment
Price Transparency
Services Offered
Glass Doors
Window Replacement/Installation
Save-On Glass & Screen
Westminster, CAFree assessment
Good Customer Service
Timely Service
Services Offered
Glass Showers
Mirrors
Window Replacement/Installation
Glass Doors
Window Repair
Golden Age Builders
West Hollywood, CAUnique window options
Free assessment
Price Transparency
Timely Service
Good Customer Service
3D design and planning tool
In-home consultations
Services Offered
Window Replacement/Installation
Can-Do Windows & Doors
Santa Ana, CAFree assessment
Educational Website
Price Transparency
Services Offered
Glass Doors
Window Replacement/Installation
Energy-Efficient Options
Double-Hung
Wood Frames
Fiberglass Frames
Vinyl Frames
Metal Frames
Window King
Huntington Beach, CAFree assessment
Price Transparency
Educational Website
Services Offered
Energy-Efficient Options
Vinyl Frames
Glass Doors
Window Replacement/Installation
Double-Hung
CGH Solutions - California Green Home Solutions
Van Nuys, CAPrice Transparency
Educational Website
Good Customer Service
Services Offered
Double-Hung
Vinyl Frames
Energy-Efficient Options
Window Replacement/Installation
Glass Doors
Calculate how much you can expect to pay for window installation and replacement in West Covina, 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 West Covina Saves You Money
Switching to energy-efficient windows can improve the comfort of your home and help you save on power bills. Here are more ways switching out your windows could help you:
- Protect your investment: If you have an older home, your windows are most likely in need of replacement. Upgrading your windows can make your home more comfortable and also help increase the value of your house if you decide to sell.
- Save money on power bills: Once you install energy-efficient windows, you can see a reduction in your bills by about 12% since you’ll use less energy to heat or cool your house.
- Decrease your carbon footprint: Reducing how much energy you use also lowers your indirect greenhouse gas emissions. You could reduce it by 117 pounds per year on average.
- Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which not only insulate your home better, but also filter out harmful UV rays, preventing your furniture, carpet and other valuables from fading.
Estimated Cost of Window Replacement in West Covina
Windows come in different shapes and sizes, so costs and services will differ considerably. Here are the average costs and the primary services that you’ll find from the average window installation company.
How Much Do New Windows Cost?
Generally, West Covina homeowners can expect their window installations to range from $250 to $1,200. The average cost is at about $600. This is because window installations are based on a variety of factors specific to your home, such as the size, material and number of windows you need to install, as well as the location of your property.
With windows, efficiency is the most important factor for many homeowners. Efficient windows may cost more off the bat, but by increasing the efficiency of your home — particularly if you live in a hot climate — they can provide many years of energy savings. According to Energy Star, purchasing certified energy-efficient windows can save West Covina homeowners $509+ each year after replacing single-pane windows.
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?
The first question to ask yourself when considering a window replacement is: Do you need a full-frame installation or a pocket installation?
A full-frame installation is a replacement of the total window. This service involves removing the old window, the windowsill, and the exterior and interior trim. It can also involve additional materials, such as insulation and drip edges, which increase the overall cost of the project. Also worth noting: it’s not uncommon for homeowners to have to touch up the paint around the window after a full-frame installation. A pocket installation involves replacing a window within the existing frame, which is usually less expensive than a full-frame installation.
Your window installation company should be able to help you figure out which type of installation you should get.
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 West Covina
In our search to find the most reliable, eco-friendly window installers in West Covina, EcoWatch evaluated many companies before settling on these. Along with energy efficiency, we evaluated each installer and ranked them based on the following methodology:
Service Area
This one is pretty self-explanatory, but we’ve chosen to highlight window installation companies that serve West Covina so you can find the best window installation company near you.
Work Quality
When it comes to new windows, the quality and range of services often plays just as important of a role in overall efficiency and performance as the type of window you get. We do give window installers more points if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.
Customer Reviews
We analyzed trends in recent customer feedback to find the companies with the most 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 parts, cost, professionalism, quality of installation, warranty and more.
Cost
This one is a give-and-take: as with most services, cheap window installation companies won’t always provide the highest quality service. Still, we want to make sure we’re highlighting companies that provide a wide range of price and financing options so they’re accessible to most homeowners.
Warranty
As discussed, windows are a hefty investment, so you’ll want to make sure that investment is well protected. Window installation companies with lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Due to West Covina’s climate, homeowners need to be wary of low efficiency, water damage and rot. We factored in local experience to reflect the ability of West Covina window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.
West Covina, CA Window Replacement FAQs
How much does window installation cost?
The typical cost to install a single window ranges between $450 and $650. There are many factors that affect how much it costs, such as your property’s location, the materials used in designing the windows, styles and sizes of windows, how energy-efficient the windows are, local labor costs and the number of windows.
Which kind of window is the best?
Generally, double-pane windows are more efficient than single-pane windows and windows that do not open will be more efficient than windows that do. To be sure you’ll get the most energy-efficient windows, look for models that have the blue Energy Star certification — they’re certified energy-efficient by the U.S. Department of Energy.
Do I really have to use a window installation company?
You should use a window installation professional whenever you need new windows. Installing windows is a complicated process that can be difficult and time-consuming, so it’s best left to the professionals.
How long does it take to install windows?
Each window takes about 30 minutes to install depending on the kind of window. However, the window installation can take two days or more if you have a lot of windows that need to be installed.