20 Best Window Companies in Downey, CA (2025 Reviews)
Are you thinking of replacing your windows? Our guide to the best window installation companies can help you pick the right one for you.
We analyzed all the top-rated window companies in Downey 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 renewable energy sources like wind and solar are important when it comes to lowering your carbon footprint, improving your home’s energy efficiency can also have a big impact on home energy conservation. During the hot summer months, the last thing you want is your cool air to leak out of your outdated windows.
Luckily, helping you save money with more efficient windows also aligns with our goals of conserving energy and the resources it takes to make it.
Because windows have such a great impact on your home, selecting the right company for you is a big decision to make. That’s why the EcoWatch team has made this list of the top window installation companies, so you can more easily make an informed decision.
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 Downey
The EcoWatch Reviews team researched dozens of installers in Downey to find the top window companies for our readers. The providers in this article scored the best in our review categories, such as energy-efficient offerings, price, availability, local expertise, 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 offers windows expertise in Downey. Window World has around 27 years of experience in the window replacement business. Its reputation is backed by hundreds 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 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 Downey?Window World doesn’t have any pricing information displayed on its website, but it's known for offering some of the most affordable window installations around. You can ask for a free quote on its website for more information about the cost.

Milgard Windows & Doors
EnergyStar Partner
Wide network of installers
Lifetime warranty available
Entails hiring third-party contractors
Limited additional services
Milgard Windows & Doors offers the best local installation in Downey. Milgard has around 60 years of experience in the window replacement business. Its reputation is backed by hundreds 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 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 Downey?Milgard doesn’t have any pricing information displayed on its website, but it offers different kinds of windows at varying price points. You can ask for a free quote on its website for more information about the cost.

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 offers the best availability in Downey. Andersen has around 27 years of experience in the window replacement business. Its reputation is backed by hundreds 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 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 Downey?Andersen doesn’t have any pricing information 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. You can ask for a free quote on its website for more information about the cost.
We strive to stay unbiased and transparent by listing pros and cons for every company we review. Additionally, our rankings are not affected by any partnerships.
More Window Companies in Downey
Renewal by Andersen of Orange County
Laguna Hills, CAPrice Transparency
Good Customer Service
Educational Website
Free assessment
Services Offered
Double-Hung
Window Replacement/Installation
Bay Windows
Glass Doors
Smart Window Company
Torrance, CAFree assessment
Educational Website
Good Customer Service
Price Transparency
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Tempered Glass
Vinyl Frames
Double-Hung
Glass Doors
Discount Window And Door
Redondo Beach, CAGood Customer Service
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Glass Doors
Metal Frames
Vinyl Frames
Skylights
Harbor Construction
Huntington Beach, CAGood Customer Service
Timely Service
Price Transparency
Educational Website
Free assessment
Services Offered
Glass Doors
Window Replacement/Installation
Bay Windows
Energy-Efficient Options
Vinyl Frames
Double-Hung
Dede Windows and Doors / window replacement
Anaheim, CAFree assessment
Energy-efficient windows and doors
American-made vinyl
Educational website
Price Transparency
Educational Website
Good Customer Service
Services Offered
Glass Doors
Vinyl Frames
Window Replacement/Installation
Custom Window Designs
Hometime Windows & Doors
Glendora, CAFree assessment
Price Transparency
Educational Website
Good Customer Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Glass Doors
SoCal Window Pros
San Dimas, CAGood Customer Service
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
California Window & Solar
Costa Mesa, CAPrice Transparency
Good Customer Service
Educational Website
Free assessment
Services Offered
Energy-Efficient Options
Vinyl Frames
Window Replacement/Installation
Glass Doors
Metal Frames
Concierge Home Remodeling
Tarzana, CAFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Andes windows & doors
Norco, CAEducational Website
Good Customer Service
Offers window treatments
Spanish-speaking
Price Transparency
Free assessment
Online portfolio
Services Offered
Double-Hung
Bay Windows
Window Replacement/Installation
Vinyl Frames
Glass Doors
Mancino Door & Window, Inc.
Laguna Niguel, CAFree assessment
Educational Website
Price Transparency
Services Offered
Window Replacement/Installation
Save-On Glass & Screen
Westminster, CAGood Customer Service
Timely Service
Free assessment
Services Offered
Mirrors
Window Repair
Glass Doors
Window Replacement/Installation
Glass Showers
Best Windows and Doors OC
Anaheim, CAFree assessment
Price Transparency
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Custom Window Designs
Glass Doors
Vinyl Frames
Golden Age Builders
West Hollywood, CAIn-home consultations
Unique window options
Free assessment
Timely Service
3D design and planning tool
Good Customer Service
Price Transparency
Services Offered
Window Replacement/Installation
TMC Windows & Doors
Orange, CAGood Customer Service
Price Transparency
Free assessment
Services Offered
Glass Doors
Window Replacement/Installation
Energy Core Construction
Anaheim, CATimely Service
Educational Website
Free assessment
Good Customer Service
Price Transparency
Services Offered
Bay Windows
Energy-Efficient Options
Window Replacement/Installation
Glass Doors
Window King
Huntington Beach, CAEducational Website
Price Transparency
Free assessment
Services Offered
Energy-Efficient Options
Double-Hung
Glass Doors
Window Replacement/Installation
Vinyl Frames
Can-Do Windows & Doors
Santa Ana, CAEducational Website
Price Transparency
Free assessment
Services Offered
Metal Frames
Vinyl Frames
Energy-Efficient Options
Wood Frames
Glass Doors
Double-Hung
Window Replacement/Installation
Fiberglass Frames
CGH Solutions - California Green Home Solutions
Van Nuys, CAEducational Website
Price Transparency
Good Customer Service
Services Offered
Glass Doors
Energy-Efficient Options
Double-Hung
Window Replacement/Installation
Vinyl Frames
Golden Glass
Fullerton, CATimely Service
Educational Website
Free assessment
Good Customer Service
Price Transparency
Services Offered
Glass Repair
Glass Doors
Glass Showers
Window Replacement/Installation
Custom Glass
Mirrors
Tempered Glass
Calculate how much you can expect to pay for window installation and replacement in Downey, 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 Downey Saves You Money
By upgrading to energy-efficient windows, you can enjoy several benefits, including:
- Protect your valuables: The low-emissivity coatings on many energy-efficient windows help prevent the fading of your floors, carpets and furniture by filtering out UV rays.
- Protect your investment: Upgrading your windows is an important part of maintaining your property and its value, especially if your home is on the older side.
- Reduce your carbon footprint: By using less energy after upgrading to energy-efficient windows, you’ll also be reducing your carbon dioxide emissions by about 12%, according to Energy Star.
- Save on power bills: The Department of Energy estimates that heat gained or lost through windows accounts for about 25-30% of household energy use. Upgrading to energy-efficient windows can help decrease that number, which helps you save some money on your bills.
Estimated Cost of Window Replacement in Downey
Windows come in various shapes and sizes, so costs and services will vary remarkably. Here are the typical costs and services that you can find from the average window installation company.
How Much Do New Windows Cost?
The typical cost to install a single window is about $600 but can range anywhere from $200 to $1,200. But costs will differ considerably depending on the quality of your products, the current condition of your home, the number of windows you need and your location. Many window companies also offer door installations and other add-ons like baths, shutters, coating and more. These extra services will increase overall project costs.
With windows, efficiency is the most important factor for many homeowners. High efficiency windows may cost more off the bat, but by increasing the efficiency of your home — especially if you live in a hot climate — they can give you many years of energy savings. According to Energy Star, buying certified energy-efficient windows can save Downey homeowners $509+ each year after replacing single-pane windows.
Getting free quotes from several companies is the best way to figure out which one will work best for your budget.
What Services do Window Installers Offer?
Generally, there are two types of window replacement services you can get: full-frame and pocket installations.
Full-frame installations are usually recommended when you want to change the style of your windows or your window has a lot of deterioration. With this service, your professionals will replace the complete window, including the trim, sill and frame. Pocket installations (or retrofits) entail replacing a window within its existing frame, which makes pocket installations take less time and therefore cost less. However, if the frame has any damage or rot, you should opt for a full-frame installation instead.
Your window installation company will be able to help you figure out what’s best for your needs. In Downey, the decision will mostly be based on how old your home is and if there’s any moisture damage. Wood can decay if not maintained properly over the years, so it’s a good idea to have a professional check your frames and window sills.
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 Downey
The EcoWatch Reviews team is different from other reviewers since we’re examining these companies through a sustainability lens. Along with energy efficiency, we analyzed window companies all across the state and assigned rankings using the following methodology:
Service Area
This one is self-explanatory, but we’ve chosen to highlight window installers that serve the Downey area so you can find the best window installation company near you.
Work Quality
When installing new windows, the quality and variety of services can often play just as important of a role in overall efficiency and performance as the type of window you choose. We do rate window installers higher if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
We analyzed patterns in recent customer feedback to determine the companies with the highest rates of customer satisfaction. Customer satisfaction might be the factor we place the most value on, as it indicates the quality of services across most other categories, including warranty, cost, quality of parts, professionalism, quality of installation and more.
Cost
This one is a give-and-take: similar to other services, cheap window companies won’t always provide the highest quality service. On the other hand, we want to ensure we’re highlighting companies that provide a range of price and financing options so they’re accessible to most homeowners.
Warranty
As discussed previously, windows are a substantial investment, so you’ll want to make sure that investment is protected. Window installation companies that provide lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Because of Downey’s climate, homeowners will want to mitigate low efficiency, rot and water damage. We factored in local experience to reflect the ability of Downey window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.
Downey, CA Window Replacement FAQs
What is the average cost to install new windows in a home?
The national average cost of replacing a single window is about $600 but can range between $200 and $1,200, depending on several factors. The price is usually influenced by the size of the window, the type and material of the window and the location of your property. Also, keep in mind that energy-efficient windows may cost more initially but can save you a decent amount of money a year in energy bills.
What are the types of windows?
The most common kinds of windows for homes include: double-hung and single-hung windows, awning windows, casement windows, bay windows, picture windows, slider windows and transom windows.
Can I replace my own windows?
While you can install your own windows, doing so requires a lot of time and handiness. Hiring a professional can help ensure that the job 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 your windows are greater than 20 years old, it’s most likely time to replace all of them. By that point, they are typically less efficient, leakier and/or more damaged than new windows. Replacing your windows all at once will involve less paperwork and less stress.