20 Best Window Companies in West Whittier-Los Nietos, CA (2025 Reviews)
When it’s time to replace your windows, our list of the best window installation companies can help you find the right provider for you.
We analyzed all the top-rated window companies in West Whittier-Los Nietos 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 green energy sources like wind and solar are important when it comes to decreasing your carbon footprint, improving your house’s energy efficiency can also have a large impact on home energy conservation. When it’s the middle of summer, your outdated and drafty windows could be making your home more difficult to cool and more uncomfortable for you.
That’s not great for your bank account or the environment, but one of the best window installation companies can help you with that.
Unlike other sites, EcoWatch ranks window installation companies based on energy efficiency while also taking into consideration 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 Whittier-Los Nietos
The EcoWatch team assessed dozens of providers that serve the West Whittier-Los Nietos area to find the top window installation companies that fit our standards. We assessed the providers on their energy-efficient offerings, coverage area, customer service, price, 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 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 window replacement business.
You may want to consider picking Window World if you're interested in a installer that 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 be sure to mention that you’d like Energy Star windows when inquiring.
How much does Window World cost in West Whittier-Los Nietos?Even though prices are not available on Window World’s website, it's known for offering some of the most affordable window installations around. The best way to get more accurate 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 window replacement business.
You may want to consider picking Milgard if you're interested in a installer that 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 be sure to mention that you’d like Energy Star windows when inquiring.
How much does Milgard Windows & Doors cost in West Whittier-Los Nietos?Even though prices are not available on Milgard’s website, it offers different kinds of windows at varying price points. The best way to get more accurate 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 window replacement business.
You may want to consider picking Andersen if you're interested in a installer that 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 be sure to mention that you’d like Energy Star windows when inquiring.
How much does Renewal by Andersen cost in West Whittier-Los Nietos?Even though prices are not available on Andersen’s website, 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 request a free quote from the company.
We try to stay unbiased and transparent by including pros and cons for each company we review. Additionally, our rankings are not affected by any partnerships.
More Window Companies in West Whittier-Los Nietos
Renewal by Andersen of Orange County
Laguna Hills, CAGood Customer Service
Free assessment
Educational Website
Price Transparency
Services Offered
Bay Windows
Double-Hung
Window Replacement/Installation
Glass Doors
Dede Windows and Doors / window replacement
Anaheim, CAAmerican-made vinyl
Good Customer Service
Educational website
Free assessment
Price Transparency
Energy-efficient windows and doors
Educational Website
Services Offered
Custom Window Designs
Window Replacement/Installation
Glass Doors
Vinyl Frames
Harbor Construction
Huntington Beach, CAEducational Website
Free assessment
Price Transparency
Good Customer Service
Timely Service
Services Offered
Bay Windows
Double-Hung
Glass Doors
Window Replacement/Installation
Energy-Efficient Options
Vinyl Frames
Hometime Windows & Doors
Glendora, CAFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Glass Doors
Window Replacement/Installation
Energy-Efficient Options
SoCal Window Pros
San Dimas, CAFree assessment
Educational Website
Good Customer Service
Services Offered
Window Replacement/Installation
Smart Window Company
Torrance, CAEducational Website
Free assessment
Good Customer Service
Price Transparency
Services Offered
Double-Hung
Tempered Glass
Energy-Efficient Options
Window Replacement/Installation
Glass Doors
Vinyl Frames
Discount Window And Door
Redondo Beach, CAGood Customer Service
Free assessment
Price Transparency
Services Offered
Energy-Efficient Options
Skylights
Glass Doors
Metal Frames
Window Replacement/Installation
Vinyl Frames
California Window & Solar
Costa Mesa, CAPrice Transparency
Good Customer Service
Free assessment
Educational Website
Services Offered
Glass Doors
Vinyl Frames
Window Replacement/Installation
Metal Frames
Energy-Efficient Options
Andes windows & doors
Norco, CAFree assessment
Offers window treatments
Good Customer Service
Online portfolio
Educational Website
Price Transparency
Spanish-speaking
Services Offered
Bay Windows
Window Replacement/Installation
Glass Doors
Double-Hung
Vinyl Frames
Concierge Home Remodeling
Tarzana, CAEducational Website
Price Transparency
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Energy-Efficient Options
United Builders Windows & Doors
Rancho Cucamonga, CAEducational Website
Price Transparency
Good Customer Service
Free assessment
Timely Service
Services Offered
Window Replacement/Installation
Double-Hung
Glass Doors
Bay Windows
Energy-Efficient Options
Save-On Glass & Screen
Westminster, CAGood Customer Service
Timely Service
Free assessment
Services Offered
Window Repair
Glass Showers
Window Replacement/Installation
Glass Doors
Mirrors
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
Mancino Door & Window, Inc.
Glendora, CAPrice Transparency
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Energy Core Construction
Anaheim, CAGood Customer Service
Price Transparency
Free assessment
Timely Service
Educational Website
Services Offered
Window Replacement/Installation
Bay Windows
Energy-Efficient Options
Glass Doors
TMC Windows & Doors
Orange, CAPrice Transparency
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Glass Doors
Golden Age Builders
West Hollywood, CAUnique window options
In-home consultations
Timely Service
Good Customer Service
Free assessment
Price Transparency
3D design and planning tool
Services Offered
Window Replacement/Installation
Can-Do Windows & Doors
Santa Ana, CAEducational Website
Free assessment
Price Transparency
Services Offered
Fiberglass Frames
Energy-Efficient Options
Wood Frames
Glass Doors
Window Replacement/Installation
Vinyl Frames
Double-Hung
Metal Frames
Window King
Huntington Beach, CAEducational Website
Price Transparency
Free assessment
Services Offered
Glass Doors
Window Replacement/Installation
Energy-Efficient Options
Double-Hung
Vinyl Frames
CGH Solutions - California Green Home Solutions
Van Nuys, CAGood Customer Service
Educational Website
Price Transparency
Services Offered
Double-Hung
Window Replacement/Installation
Energy-Efficient Options
Vinyl Frames
Glass Doors
Calculate how much you can expect to pay for window installation and replacement in West Whittier-Los Nietos, 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 Whittier-Los Nietos Saves You Money
Energy-efficient windows can benefit you in more than one way. Here are a few reasons you may want to consider making the switch:
- Save on power bills: Since energy-efficient windows lower how much energy you need to heat or cool your home, they can help you save about $509 annually on your energy bills in West Whittier-Los Nietos.
- Reduce your carbon footprint: Since energy-efficient windows improve the insulation in your home, you can lower your indirect greenhouse gas emissions by about 12%, according to Energy Star.
- Protect your valuables from fading: The low-emissivity coatings on many energy-efficient windows filter out harmful UV rays, preventing fading of your furniture, carpet and other valuables.
- Protect your investment: The older your home is, the more likely it is that getting new windows will benefit you. Older homes tend to have windows that are outdated, drafty or maybe even damaged in some way. Updating your windows could help raise the value of your home if you decide to sell.
Estimated Cost of Window Replacement in West Whittier-Los Nietos
When considering window installation, each company provides different services and costs. Let’s look at some typical costs and services.
How Much Do New Windows Cost?
Typically, West Whittier-Los Nietos homeowners can anticipate their replacement window installations to range from $250 to $1,200. The most common installations sit at about $600. But costs will differ significantly depending on the number of windows you need, your location, the current condition of your home and the quality of your products. Many window companies also offer door installations and other add-ons like shutters, coating, baths and more. These extra services will increase your overall project costs.
With windows, efficiency is the most important factor for many homeowners. Windows with higher efficiency may cost more off the bat, but by increasing the efficiency of your home — especially 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 Whittier-Los Nietos homeowners $509+ each year after replacing single-pane windows.
Costs will also vary depending on the material you pick for your window frames. Aluminum frames have the lowest price. They’re sturdy, light and easy to maintain, but offer poor insulation. Vinyl frames are somewhat expensive and offer good insulation. Composite frames made using wood fibers encased in plastic also offer good insulation and are moderately expensive. Wood frames cost the most and are the most in-demand. They’re also aesthetically pleasing and provide decent insulation for your home.
What Services do Window Installers Offer?
The first step when considering an installation is to decide whether you need a full-frame or pocket installation.
A full-frame installation replaces the complete window, such as the windowsill, frame, trim and the window panes. As this type of installation is more involved, it will cost more than a pocket installation. Pocket installations (or retrofits) involve installing a new window within its 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.
Your window replacement company will be able to help you figure out what’s best for your needs. In West Whittier-Los Nietos, the decision will mostly be based on the age of your windows and if there’s any damage. Wood can decay if not maintained properly over the years, so it’s a good idea to have a professional examine 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 West Whittier-Los Nietos
In our hunt to make your home improvements easier and more eco-friendly in West Whittier-Los Nietos, the EcoWatch Reviews team examined many companies before settling on these. Along with energy efficiency, we reviewed window companies all across the state and ranked them based on the following methodology:
Service Area
Since this is a guide for West Whittier-Los Nietos, we paid more attention to companies that serve the city. There are certainly reputable providers that didn’t make our list because they wouldn’t be able to serve homeowners in West Whittier-Los Nietos.
Work Quality
We’re certain that you’re looking for a company to do a great job installing windows. We’ve vetted each installer included 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 super important review factor is customer feedback. If the majority of customers don’t have positive feedback about their service from a certain company, you won’t see it featured on EcoWatch.
Cost
Cheaper windows certainly don’t mean better windows, but we know many of our readers try to keep costs as low as 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 previously, windows are a sizable investment, so you’ll want to make sure that investment is protected. Window installation companies that have lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Because of West Whittier-Los Nietos’s climate, homeowners need to be wary of water damage, low efficiency and rot. We factored in local experience to reflect the ability of West Whittier-Los Nietos 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 Whittier-Los Nietos, CA Window Replacement FAQs
What is the typical cost to install windows in a home?
The national average cost to replace a single window is about $600 but can range between $200 and $1,200, based on a few different factors. The price is generally dependent on the location of your property, the size of the window and the type and material of the window. Also, remember that energy-efficient windows may cost more initially but can save you hundreds of dollars a year in energy bills.
Which type of window is the best?
A window’s energy efficiency depends on a number of factors, such as the quality of the installation and the kind of window. Look for Energy Star Certified windows — these are usually the most energy-efficient and are certified by the U.S. Department of Energy.
When do I need to use a window installation company?
Unless you have experience with home improvement projects and have all the necessary tools to replace your own windows, we recommend hiring a professional installer. The process of installing windows is quite involved and can take anywhere from four to six hours for one window. Although it’s tempting to try to do it yourself to save money, hiring a professional is a faster, more efficient and much safer alternative.
How long does window installation generally take?
Because a window takes about 30 minutes to install, around 16 windows can be installed in an 8-hour work day.