20 Best Window Companies in San Dimas, CA (2025 Reviews)
Looking to replace your windows? We’ve got you covered in this guide to the best window installation companies.
We analyzed all the top-rated window companies in San Dimas 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
A guide on the top window replacement companies in San Dimas may not seem like the most riveting article on EcoWatch, but trust us, windows have more of an impact on your life than you might think. Potential leaks or drafts can reduce your home’s energy efficiency by up to 30%, according to the Department of Energy. In San Dimas, that’s almost $509 a year that you could save on your electric bills after making the switch.
That’s also bad for the environment, as the extra energy required by damaged windows increases your carbon footprint.
As windows are so important for your home, picking 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 replacement companies, so you can make an informed decision more easily.
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 San Dimas
The EcoWatch team evaluated dozens of installers in San Dimas to find the best window installation companies for our readers. The providers mentioned in this article scored best in our review categories, which include energy-efficient offerings, customer service, local expertise, availability, price 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. This window installation company has been operating since 1995 and 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 WindowsThere are a wide range of window types available from Window World, some of which are Energy Star products. 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 San Dimas?Window World doesn’t have any pricing information listed on its website, but it's known for offering some of the most affordable window installations around. You can request a free quote on its website for more information about pricing.

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. This window installation company has been operating since 1962 and 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 WindowsThere are a wide range of window types available from Milgard Windows & Doors, some of which are Energy Star products. 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 San Dimas?Milgard doesn’t have any pricing information listed on its website, but it offers different kinds of windows at varying price points. You can request a free quote on its website for more information about pricing.

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. This window installation company has been operating since 1995 and 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 WindowsThere are a wide range of window types available from Renewal by Andersen, some of which are Energy Star products. 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 San Dimas?Andersen doesn’t have any pricing information 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. You can request a free quote on its website for more information about pricing.
We aim to be unbiased and transparent by listing pros and cons for each company we review. Additionally, our rankings are not influenced by any partnerships.
More Window Companies in San Dimas
Renewal by Andersen of Orange County
Laguna Hills, CAFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Glass Doors
Double-Hung
Bay Windows
Window Replacement/Installation
SoCal Window Pros
San Dimas, CAFree assessment
Educational Website
Good Customer Service
Services Offered
Window Replacement/Installation
Hometime Windows & Doors
Glendora, CAEducational Website
Free assessment
Good Customer Service
Price Transparency
Services Offered
Glass Doors
Energy-Efficient Options
Window Replacement/Installation
United Builders Windows & Doors
Rancho Cucamonga, CAEducational Website
Good Customer Service
Price Transparency
Timely Service
Free assessment
Services Offered
Window Replacement/Installation
Bay Windows
Double-Hung
Energy-Efficient Options
Glass Doors
Dede Windows and Doors / window replacement
Anaheim, CAAmerican-made vinyl
Educational Website
Price Transparency
Good Customer Service
Energy-efficient windows and doors
Free assessment
Educational website
Services Offered
Glass Doors
Custom Window Designs
Window Replacement/Installation
Vinyl Frames
Andes windows & doors
Norco, CAPrice Transparency
Educational Website
Spanish-speaking
Offers window treatments
Online portfolio
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Glass Doors
Double-Hung
Vinyl Frames
Bay Windows
Retro Windows and Patio Doors LLC
Fontana, CAFree assessment
Price Transparency
Good Customer Service
Educational Website
Energy-efficient windows and doors
Lifetime warranty
Family-owned and operated
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Glass Doors
Tempered Glass
Harbor Construction
Huntington Beach, CAEducational Website
Good Customer Service
Timely Service
Free assessment
Price Transparency
Services Offered
Vinyl Frames
Glass Doors
Bay Windows
Energy-Efficient Options
Double-Hung
Window Replacement/Installation
California Window & Solar
Costa Mesa, CAPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Vinyl Frames
Window Replacement/Installation
Energy-Efficient Options
Metal Frames
Glass Doors
Smart Window Company
Torrance, CAFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Glass Doors
Energy-Efficient Options
Double-Hung
Tempered Glass
Vinyl Frames
Discount Window And Door
Redondo Beach, CAFree assessment
Good Customer Service
Price Transparency
Services Offered
Vinyl Frames
Metal Frames
Skylights
Glass Doors
Window Replacement/Installation
Energy-Efficient Options
Mancino Door & Window, Inc.
Glendora, CAPrice Transparency
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Energy Core Construction
Anaheim, CATimely Service
Educational Website
Price Transparency
Good Customer Service
Free assessment
Services Offered
Bay Windows
Glass Doors
Window Replacement/Installation
Energy-Efficient Options
TMC Windows & Doors
Orange, CAPrice Transparency
Good Customer Service
Free assessment
Services Offered
Glass Doors
Window Replacement/Installation
Best Windows and Doors OC
Anaheim, CAEducational Website
Good Customer Service
Price Transparency
Free assessment
Services Offered
Custom Window Designs
Window Replacement/Installation
Glass Doors
Vinyl Frames
Save-On Glass & Screen
Westminster, CATimely Service
Free assessment
Good Customer Service
Services Offered
Glass Doors
Mirrors
Window Repair
Glass Showers
Window Replacement/Installation
Can-Do Windows & Doors
Santa Ana, CAFree assessment
Educational Website
Price Transparency
Services Offered
Glass Doors
Metal Frames
Double-Hung
Wood Frames
Window Replacement/Installation
Vinyl Frames
Fiberglass Frames
Energy-Efficient Options
Ameristar Windows
Riverside, CAGood Customer Service
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Vinyl Frames
Glass Doors
Energy-Efficient Options
Glass Showers
Golden Age Builders
West Hollywood, CAPrice Transparency
In-home consultations
Good Customer Service
Unique window options
3D design and planning tool
Free assessment
Timely Service
Services Offered
Window Replacement/Installation
Window King
Huntington Beach, CAFree assessment
Price Transparency
Educational Website
Services Offered
Window Replacement/Installation
Glass Doors
Double-Hung
Energy-Efficient Options
Vinyl Frames
Calculate how much you can expect to pay for window installation and replacement in San Dimas, 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 San Dimas Saves You Money
By switching to energy-efficient windows, you and your family can enjoy several benefits, such as:
- Protect your investment: When your home is on the older side, your windows could also be outdated or drafty. Upgrading and repairing your windows is an important part of maintaining your property and its value.
- Protect your valuables from fading: When you upgrade to energy-efficient windows with low-emissivity coatings, your floors, carpets and furniture will be protected from fading because of their ability to filter out damaging UV rays.
- Reduce your carbon footprint: By using less energy once switching to energy-efficient windows, you’ll also be lowering your carbon dioxide emissions by about 12%, according to Energy Star.
- Save money on electricity bills: Upgrading to energy-efficient windows lowers your energy bills by about 12% because you use less energy.
Estimated Cost of Window Replacement in San Dimas
Let’s go over the cost of window installation and the types of services offered by installers.
How Much Do New Windows Cost?
Generally, homeowners in San Dimas can anticipate that most replacement window installations will range from $250 to $1,200, with the most common installations sitting at about $600. These figures vary based on the specifics of your installation, like type, the location of your home, number of windows, material, size and more.
Keep in mind that energy-efficient windows may have a higher price, but Energy Star estimates the upgrade will save you between $101 and $583 per year when you install single-pane windows and between $27 and $197 per year when you replace double-pane, clear glass windows. These savings vary based on your local climate, energy rates and individual home characteristics.
Costs will also vary depending on the material you pick for your window frames. Aluminum frames are the least expensive. They’re sturdy, light and easy to maintain, but provide poor insulation. Vinyl frames are a bit more expensive and provide good insulation. Composite frames made with wood fibers encased in plastic also offer good insulation and are moderately expensive. Wood frames are the most expensive and are the most in-demand. They’re also aesthetically pleasing and offer decent insulation for your home.
What Services do Window Installers Offer?
There are generally two types of window replacement services: full-frame and pocket installations.
Full-frame installations involve replacing the whole window — the sill, frame, trim and all. These are typically done when you want to change the style of your window or when it has significant rot or deterioration. Full-frame installations are more involved and will increase overall costs. A pocket installation involves installing a new window without replacing the frame. This means instead of removing the whole unit and reinstalling it, the contractor will just slide the replacement window (also called a retrofit or insert window) into the frame.
If you’re hiring a reputable window installation company, your company can recommend the best type for your project. In San Dimas, the decision will mostly be influenced by how much damage there is currently and how old your existing frames are.
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 San Dimas
EcoWatch differs from other reviewers because we assess these companies through a sustainability lens. Along with energy efficiency, we evaluated several window installers in San Dimas and assigned rankings based on the following methodology:
Service Area
Since this is a guide for San Dimas, we only included companies that provide services to the city. There are certainly reputable providers that didn’t make our list because they wouldn’t be able to serve homeowners in San Dimas.
Work Quality
When choosing 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 you opt for. 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
Another self-explanatory yet super important review factor is customer feedback. If most customers don’t have positive things to say about their experience with a certain company, you won’t see it featured on EcoWatch.
Cost
This one is a give-and-take: similar to other services, cheap window installers may not provide the most quality service. On the other hand, 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 that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Lastly, we like to see companies that have been in the industry for a while. 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.
San Dimas, CA Window Replacement FAQs
What is the average cost to install new windows in a home?
The typical cost of installing a single window can range between $450 and $650. There are many factors that affect the cost, including styles and sizes of windows, local labor costs, how energy-efficient the windows are, your property’s location, the materials used in designing the windows and the number of windows.
What are the types of windows?
There are several different types of windows you can get for your house, including bay windows, casement windows, double-hung and single-hung windows, picture windows, transom windows, slider windows and awning windows.
What do window installers do?
Window installation professionals visit your house to remove your old windows and replace them with new ones. Some companies install products made by other companies, whereas others are both manufacturers and installation companies combined. The installer will also clean up after the installation is done.
Should I replace all my windows at the same time?
If you want to get more efficient windows and save money on your energy bills, replacing all of your windows together 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.
How long does it usually take to install windows?
Because the average installation time of a window is 30 minutes, about 16 windows can be installed during a typical 8-hour work day.