20 Best Window Companies in Montclair, CA (2025 Reviews)
If you’re thinking of upgrading to new windows, our guide to the best window installation companies can help.
We analyzed all the top-rated window companies in Montclair 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 Reviews team is all about helping Montclair homeowners make their homes more eco-friendly. When it’s the middle of summer, your old and drafty windows could be making your home more difficult to cool and more uncomfortable for you.
That’s also bad for the environment, as the extra energy required by leaky windows increases your carbon footprint.
Unlike other review sites, EcoWatch ranks window installation companies based 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 Montclair
The EcoWatch Reviews team researched dozens of window installation companies in Montclair to find the top ones for our readers. The companies we’ve mentioned in this article passed our review standards for energy-efficient offerings as well as price, customer service, local expertise 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 offers windows expertise in Montclair. It's 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 serves 200 locations nationwide.
Window World may be the company for you if you're interested in one 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 WindowsWindow World is an Energy Star partner with a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company’s windows are Energy Star certified, so make sure to ask your Window World representative when inquiring about services.
How much does Window World cost in Montclair?Although pricing information is not available on Window World’s website, it's known for offering some of the most affordable window installations around. For more detailed information on the cost, you can ask for a 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 offers the best local installation in Montclair. It's 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 serves Anaheim, Riverside, Los Angeles, San Bernardino and Orange counties.
Milgard may be the company for you if you're interested in one 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 WindowsMilgard Windows & Doors is an Energy Star partner with a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company’s windows are Energy Star certified, so make sure to ask your Milgard representative when inquiring about services.
How much does Milgard Windows & Doors cost in Montclair?Although pricing information is not available on Milgard’s website, it offers different kinds of windows at varying price points. For more detailed information on the cost, you can ask for a 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 offers the best availability in Montclair. It's 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 serves nearly every state except Mississippi and West Virginia.
Andersen may be the company for you if you're interested in one 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 WindowsRenewal by Andersen is an Energy Star partner with a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company’s windows are Energy Star certified, so make sure to ask your Andersen representative when inquiring about services.
How much does Renewal by Andersen cost in Montclair?Although pricing information is 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. For more detailed information on the cost, you can ask for a 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 be unbiased and transparent by describing both pros and cons for each company.
More Window Companies in Montclair
Renewal by Andersen of Orange County
Laguna Hills, CAFree assessment
Good Customer Service
Educational Website
Price Transparency
Services Offered
Glass Doors
Bay Windows
Double-Hung
Window Replacement/Installation
SoCal Window Pros
San Dimas, CAFree assessment
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Hometime Windows & Doors
Glendora, CAEducational Website
Price Transparency
Good Customer Service
Free assessment
Services Offered
Energy-Efficient Options
Glass Doors
Window Replacement/Installation
United Builders Windows & Doors
Rancho Cucamonga, CAPrice Transparency
Educational Website
Good Customer Service
Free assessment
Timely Service
Services Offered
Bay Windows
Window Replacement/Installation
Energy-Efficient Options
Double-Hung
Glass Doors
Retro Windows and Patio Doors LLC
Fontana, CAEducational Website
Good Customer Service
Energy-efficient windows and doors
Lifetime warranty
Family-owned and operated
Free assessment
Price Transparency
Services Offered
Tempered Glass
Window Replacement/Installation
Glass Doors
Energy-Efficient Options
Andes windows & doors
Norco, CAPrice Transparency
Spanish-speaking
Free assessment
Online portfolio
Good Customer Service
Offers window treatments
Educational Website
Services Offered
Glass Doors
Bay Windows
Vinyl Frames
Window Replacement/Installation
Double-Hung
Dede Windows and Doors / window replacement
Anaheim, CAEnergy-efficient windows and doors
American-made vinyl
Good Customer Service
Free assessment
Educational website
Price Transparency
Educational Website
Services Offered
Window Replacement/Installation
Custom Window Designs
Glass Doors
Vinyl Frames
Harbor Construction
Huntington Beach, CAEducational Website
Free assessment
Good Customer Service
Timely Service
Price Transparency
Services Offered
Energy-Efficient Options
Glass Doors
Bay Windows
Window Replacement/Installation
Double-Hung
Vinyl Frames
California Window & Solar
Costa Mesa, CAFree assessment
Price Transparency
Good Customer Service
Educational Website
Services Offered
Energy-Efficient Options
Metal Frames
Window Replacement/Installation
Vinyl Frames
Glass Doors
Mancino Door & Window, Inc.
Laguna Niguel, CAFree assessment
Educational Website
Price Transparency
Services Offered
Window Replacement/Installation
Energy Core Construction
Anaheim, CAEducational Website
Good Customer Service
Timely Service
Free assessment
Price Transparency
Services Offered
Glass Doors
Bay Windows
Energy-Efficient Options
Window Replacement/Installation
Ameristar Windows
Riverside, CAGood Customer Service
Free assessment
Price Transparency
Services Offered
Glass Doors
Energy-Efficient Options
Vinyl Frames
Glass Showers
Window Replacement/Installation
TMC Windows & Doors
Orange, CAGood Customer Service
Free assessment
Price Transparency
Services Offered
Glass Doors
Window Replacement/Installation
Best Windows and Doors OC
Anaheim, CAGood Customer Service
Price Transparency
Free assessment
Educational Website
Services Offered
Custom Window Designs
Window Replacement/Installation
Glass Doors
Vinyl Frames
Can-Do Windows & Doors
Santa Ana, CAPrice Transparency
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Glass Doors
Energy-Efficient Options
Vinyl Frames
Wood Frames
Double-Hung
Fiberglass Frames
Metal Frames
Save-On Glass & Screen
Westminster, CATimely Service
Free assessment
Good Customer Service
Services Offered
Glass Showers
Window Replacement/Installation
Glass Doors
Window Repair
Mirrors
Window King
Huntington Beach, CAPrice Transparency
Free assessment
Educational Website
Services Offered
Double-Hung
Window Replacement/Installation
Vinyl Frames
Glass Doors
Energy-Efficient Options
High Desert Window & Glass
Hesperia, CAFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Double-Hung
Glass Doors
Tempered Glass
Glass Showers
Mirrors
Golden Age Builders
West Hollywood, CATimely Service
Free assessment
Price Transparency
3D design and planning tool
Good Customer Service
Unique window options
In-home consultations
Services Offered
Window Replacement/Installation
A New View Windows & Doors Inc.
Anaheim, CAGood Customer Service
Price Transparency
Educational Website
Free assessment
Services Offered
Glass Doors
Window Replacement/Installation
Calculate how much you can expect to pay for window installation and replacement in Montclair, 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 Montclair Saves You Money
When you switch to energy-efficient windows, you may see several benefits, such as:
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which not only provide better insulation for your home, but also filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
- Protect your investment: The older your home is, the more likely you are to benefit from switching to energy-efficient windows. Older homes tend to have windows that are outdated, leaky or maybe even damaged in some way. Upgrading your windows could help raise the value of your property if you decide to sell.
- Save money on power bills: After you switch to energy-efficient windows, you can see a reduction in your bills by about 12% since you’ll require less energy to heat or cool your home.
- Reduce your carbon footprint: You can reduce your carbon footprint by about 12% after you install Energy Star certified windows. In Montclair, that’s about 117 pounds per year on average.
Estimated Cost of Window Replacement in Montclair
Each window installation company provides various services and has different price points depending on a few factors.
How Much Do New Windows Cost?
Even though the average cost to install one window is about $600, it can range anywhere from $200 to $1,200. But costs will vary considerably based on your location, the current condition of your home, the number of windows you need and the quality of your products. Many window companies also offer replacement door installations and other add-ons like shutters, baths, coating and more. These extra services will increase overall project costs.
With windows, efficiency is one of the most important factors for most homeowners. Efficient windows may cost more initially, 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 Montclair homeowners $540+ each year after replacing single-pane windows.
The cost of your window installation will also vary based on the type of window material you choose for the frames. Wood windows are generally the most expensive, but it depends on whether they are 100% wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are shown to be more efficient.
What Services do Window Installers Offer?
When considering window installations, there are typically two types that your provider will offer: full-frame and pocket installations.
A full-frame installation replaces the full window, such as the sill, frame, trim and the window panes. As this type of installation requires more time, it will cost more than a pocket installation. A pocket installation entails installing a new window within the old frame. This means instead of tearing out the whole unit and reinstalling it, the contractor will just slide the replacement window (also called a retrofit or insert window) into the frame.
Your window installation company can recommend the best type for your project. In Montclair, the choice will mostly be based on the efficiency of your home and the age and condition of your existing frames.
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 Montclair
In our search to make your home improvements easier and more eco-friendly in Montclair, EcoWatch landed on the above companies as the top window installation companies in the city. Along with energy efficiency, we evaluated window companies all across the state and ranked them using the following methodology:
Service Area
This one is pretty self-explanatory, but we’ve chosen to highlight window installers that serve the Montclair area so you can find the right window installation company near you.
Work Quality
When selecting new windows, the quality and variety of services can often play just as important of a role in overall efficiency and performance as the brand of window you choose. We do give window installers more points 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 find the companies with the most consistent customer satisfaction, weighted by sample size. Customer satisfaction may be the factor we place the most value on, as it indicates the quality of services across most other categories, including quality of installation, cost, quality of parts, warranty, professionalism and more.
Cost
This one is a give-and-take: similar to most services, cheap window installation companies are not going to provide the most quality service. Still, we want to make sure 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 with lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Last but not least, we like to see companies that have been in the industry for quite some time. Window installation companies that have more years of experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.
Montclair, CA Window Replacement FAQs
How much does a window install cost?
The national average cost to replace a single window is about $600 but can range from $200 to $1,200, based on a few different factors. The price is often influenced by the location of your property, the type and material of the window and the size of the window. Also, keep 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 different kinds of windows?
The most common types of windows for homes are double-hung and single-hung windows, slider windows, awning windows, bay windows, picture windows, transom windows and casement windows.
Do I really need to use a window installation company?
You should hire a window installation company whenever you want to replace your windows. Installing windows is a complicated process that can be difficult to do on your own, so it’s best left to the professionals.
Should I replace my windows all at once?
If you want to get more efficient windows and save money on energy costs, replacing all the windows at the same time is the only way to see a noticeable difference. On the other hand, if you have just one or two windows that are broken or leaky, you can replace just those.