20 Best Window Companies in Covina, CA (2025 Reviews)
When it’s time to upgrade your windows, our reviews of the best window installation companies can help you find the provider for you.
We analyzed all the top-rated window companies in 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
Although environmentally friendly energy sources like wind and solar are important when it comes to lowering your carbon footprint, improving your house’s energy efficiency can also have a large impact on home energy conservation. If your windows are made of traditional materials, or are outdated or damaged, you could be sending 25-30% of your house’s heat or cool air right out of them.
Fortunately, saving you money with more efficient windows also helps our goals of reducing energy usage for the environment.
So if you’re constructing a new home, renovating or replacing your windows in Covina, this is the best place to get started.
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 Covina
The EcoWatch team researched dozens of installers that serve the Covina area to find the best window installation companies that fit our standards. We assessed the installers based on their energy-efficient offerings, price, local experience, coverage area, customer service 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 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 window replacement industry. The company has many glowing reviews from customers on online 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 WindowsIts high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home. Not all of Window World’s windows are Energy Star certified, so make sure you mention that you’d like Energy Star windows when inquiring.
How much does Window World cost in Covina?Prices aren’t listed 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 information is to get 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 window replacement industry. The company has many glowing reviews from customers on online 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 WindowsThe 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. Not all of Milgard’s windows are Energy Star certified, so make sure you mention that you’d like Energy Star windows when inquiring.
How much does Milgard Windows & Doors cost in Covina?Prices aren’t listed on Milgard’s website, but it offers different kinds of windows at varying price points. The best way to get more accurate information is to get 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 window replacement industry. The company has many glowing reviews from customers on online 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 WindowsA 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. Not all of Andersen’s windows are Energy Star certified, so make sure you mention that you’d like Energy Star windows when inquiring.
How much does Renewal by Andersen cost in Covina?Prices aren’t listed 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 information is to get a free quote from the company.
We strive to be unbiased and transparent by describing pros and cons for each company we review. Additionally, our rankings are not influenced by any partnerships.
More Window Companies in Covina
Renewal by Andersen of Orange County
Laguna Hills, CAPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Glass Doors
Window Replacement/Installation
Bay Windows
Double-Hung
Hometime Windows & Doors
Glendora, CAGood Customer Service
Educational Website
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Glass Doors
Energy-Efficient Options
SoCal Window Pros
San Dimas, CAGood Customer Service
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Dede Windows and Doors / window replacement
Anaheim, CAEducational Website
Good Customer Service
Energy-efficient windows and doors
Free assessment
Price Transparency
American-made vinyl
Educational website
Services Offered
Window Replacement/Installation
Custom Window Designs
Vinyl Frames
Glass Doors
United Builders Windows & Doors
Rancho Cucamonga, CAEducational Website
Timely Service
Price Transparency
Free assessment
Good Customer Service
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Double-Hung
Glass Doors
Bay Windows
Andes windows & doors
Norco, CAOffers window treatments
Online portfolio
Spanish-speaking
Educational Website
Free assessment
Good Customer Service
Price Transparency
Services Offered
Double-Hung
Glass Doors
Bay Windows
Window Replacement/Installation
Vinyl Frames
Retro Windows and Patio Doors LLC
Fontana, CAGood Customer Service
Energy-efficient windows and doors
Educational Website
Price Transparency
Lifetime warranty
Free assessment
Family-owned and operated
Services Offered
Window Replacement/Installation
Tempered Glass
Glass Doors
Energy-Efficient Options
Harbor Construction
Huntington Beach, CATimely Service
Educational Website
Free assessment
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Bay Windows
Double-Hung
Vinyl Frames
Glass Doors
California Window & Solar
Costa Mesa, CAGood Customer Service
Price Transparency
Free assessment
Educational Website
Services Offered
Energy-Efficient Options
Glass Doors
Vinyl Frames
Window Replacement/Installation
Metal Frames
Smart Window Company
Torrance, CAFree assessment
Price Transparency
Educational Website
Good Customer Service
Services Offered
Tempered Glass
Vinyl Frames
Double-Hung
Energy-Efficient Options
Window Replacement/Installation
Glass Doors
Discount Window And Door
Redondo Beach, CAPrice Transparency
Good Customer Service
Free assessment
Services Offered
Energy-Efficient Options
Skylights
Window Replacement/Installation
Metal Frames
Vinyl Frames
Glass Doors
Mancino Door & Window, Inc.
Glendora, CAEducational Website
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
Energy Core Construction
Anaheim, CAGood Customer Service
Price Transparency
Timely Service
Educational Website
Free assessment
Services Offered
Energy-Efficient Options
Glass Doors
Window Replacement/Installation
Bay Windows
Best Windows and Doors OC
Anaheim, CAPrice Transparency
Educational Website
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Glass Doors
Custom Window Designs
Vinyl Frames
TMC Windows & Doors
Orange, CAFree assessment
Price Transparency
Good Customer Service
Services Offered
Glass Doors
Window Replacement/Installation
Save-On Glass & Screen
Westminster, CAFree assessment
Timely Service
Good Customer Service
Services Offered
Glass Showers
Window Repair
Window Replacement/Installation
Glass Doors
Mirrors
Can-Do Windows & Doors
Santa Ana, CAFree assessment
Price Transparency
Educational Website
Services Offered
Window Replacement/Installation
Glass Doors
Energy-Efficient Options
Vinyl Frames
Double-Hung
Fiberglass Frames
Metal Frames
Wood Frames
Golden Age Builders
West Hollywood, CAFree assessment
Price Transparency
Timely Service
3D design and planning tool
Good Customer Service
In-home consultations
Unique window options
Services Offered
Window Replacement/Installation
Window King
Huntington Beach, CAPrice Transparency
Educational Website
Free assessment
Services Offered
Energy-Efficient Options
Vinyl Frames
Double-Hung
Window Replacement/Installation
Glass Doors
Ameristar Windows
Riverside, CAPrice Transparency
Free assessment
Good Customer Service
Services Offered
Glass Showers
Energy-Efficient Options
Vinyl Frames
Window Replacement/Installation
Glass Doors
Calculate how much you can expect to pay for window installation and replacement in 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 Covina Saves You Money
By upgrading to energy-efficient windows, you and your family can take advantage of several benefits, such as:
- Protect your valuables from fading: The low-emissivity coatings on many energy-efficient windows filter out harmful UV rays, preventing your furniture, carpet and other valuables from fading.
- Reduce your carbon footprint: In Covina, you can lower your indirect greenhouse gas emissions by about 117 pounds per year once you upgrade to energy-efficient windows.
- Protect your investment: If your home is on the older side, your windows are most likely outdated. Updating your windows can make your home more comfortable and also help increase the value of your home if you decide to sell.
- Save on power bills: Switching to energy-efficient windows lowers your energy bills by about 12% because you use less energy.
Estimated Cost of Window Replacement in Covina
Let’s go over the cost of window replacement and the types of services offered by installers.
How Much Do New Windows Cost?
The typical cost to replace one window is about $600 but can range anywhere from $200 to $1,200. These estimates vary based on specific characteristics of your installation, such as the location of your home, material, number of windows, type, size and more.
With windows, efficiency is the most important factor for many homeowners. Windows with higher efficiency may cost more upfront, but by increasing the efficiency of your home — especially if you live in a hot climate — they can provide decades of energy savings. According to Energy Star, purchasing certified energy-efficient windows can save Covina homeowners $509+ per year after replacing single-pane windows.
The cost of your window installation will also vary based on the kind of window material you choose for the frames. Wood windows are generally the most expensive, though it depends on whether they are completely wood or clad with aluminum or vinyl. Fiberglass windows also tend to be a bit more expensive than vinyl, but they are shown to be more efficient.
What Services do Window Installers Offer?
There are generally two kinds of window installation services: full-frame and pocket installations.
A full-frame installation is a total window replacement. This service involves taking out the old window, the sill, and the exterior and interior trim. It can also involve other materials, including insulation and drip edges, which raise the overall cost of the project. It’s also worth noting that you may have to touch up the paint around the window after a full-frame installation. A pocket installation means replacing a window without taking out the entire frame, which is generally less expensive than a full-frame installation.
Your window installation company can 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 Covina
EcoWatch differs from other reviewers since we assess these companies through a sustainability lens. We have decided to assess the best window replacement companies in Covina mainly based on energy efficiency, as the most sustainable option also benefits homeowners in many ways. Energy-efficient windows have been shown to lower energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology is based on the following factors:
Service Area
This one is self-explanatory, but we’ve chosen to highlight window installation companies that serve the Covina area so you can find a quality window installation company near you.
Work Quality
When picking new windows, the quality and range of services can often play just as important of a role in insulation and performance as the brand you get. We do rate window installers higher if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
Another self-explanatory yet super important review factor is customer feedback. If the majority of customers don’t have good feedback about their experience with a certain installer, you won’t see it featured on EcoWatch.
Cost
Cheaper windows don’t necessarily mean better windows, but we know many of our readers would like to keep costs as low as possible. When analyzing providers’ prices, we gave higher points to companies with reasonable prices and accessible financing rather than “cheaper” services.
Warranty
Protecting your investment in new windows is important to many homeowners. For that reason, window installation companies that provide 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 a proven track record in the industry. Window installation companies that have more years of experience will earn higher rankings by our standards. We like to see at least ten years of experience.
Covina, CA Window Replacement FAQs
What is the average cost to install windows?
The national average cost of installing a window is about $600 but can range from $200 to $1,200, based on several factors. The price is often dependent on the type and material of the window, the location of your property and the size of the window. Also, bear in mind that energy-efficient windows may cost more upfront but can save you a decent amount of money a year in energy bills.
What are the most common types of replacement windows?
There are several different types of windows you can get for your house, such as slider windows, transom windows, awning windows, double-hung and single-hung windows, picture windows, bay windows and casement windows.
Can I install my own windows?
If you’re handy and know how to replace a window, it’s possible to install your own windows. But if you don’t have the time or experience, we don’t recommend it.
What time of year is a good time to replace my windows?
Replacement windows can be installed during any season, but warmer weather is typically better. No matter when you install them, the contractors will take steps to make sure that too much hot or cold air doesn’t get into the home, so the temperature outside isn’t necessarily a big factor. What’s most important is that the weather should be dry.
Should I replace my windows all at once?
If you want to get more efficient windows and save money on your energy bills, replacing all the windows at once is the only way to gain that benefit. However, if you have only one or two windows that are damaged or leaky, you can replace just those.