22 Best Window Replacement Companies in Diamond Bar, CA (Mar 2023)
Window Companies Near Me
If you're thinking of upgrading to new windows, our guide to the best window installation companies can help.
We analyzed all the top window installers in Diamond Bar and selected the top 22 based on:
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Customer reviews
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Window replacement expertise
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Popularity with home-owners like you
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Updated March 14, 2023
Why you can trust EcoWatch
A guide on the best window replacement companies in Diamond Bar may not seem like the most riveting article on EcoWatch, but trust us, windows have a more direct impact on your life than you might think. If your house has old or damaged windows, your HVAC system could be working extra hard to heat or cool your home. This means spending more on electricity bills.
That's not great for your bank account or the environment, but one of the top window installation companies can help with that.
Efficient windows are of particular importance in Diamond Bar, where summers are long and hot. According to Energy Star, making the switch to energy-efficient windows can save the average homeowner up to $509 a year.
Excellent Reputation
Milgard Windows & Doors
- EnergyStar Partner
- Wide network of installers
- Lifetime warranty available
- Limited additional services
Best Affordability
Window World
- Low prices relative to competitors
- Lifetime warranty
- Large serice area
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
- No lifetime warranty
Best Window Replacement Companies in Diamond Bar
The EcoWatch team examined dozens of installers across the country to find the best window replacement companies for our readers. We assessed the installers based on their energy-efficient offerings, customer service, price, local experience, coverage area and more.

Milgard Windows & Doors
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EnergyStar Partner
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Wide network of installers
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Lifetime warranty available
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Limited additional services
Milgard Windows & Doors offers the best local installation in Diamond Bar. Milgard has about 60 years of experience in the window installation sector.
You may want to consider choosing 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 WindowsMilgard Windows & Doors offers some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want high-quality Energy Star windows when inquiring. 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 Diamond Bar?Pricing information is not available on Milgard's website, as the cost of window replacement depends on how many and what type(s) of windows you need. However, it offers different kinds of windows at varying price points. You can request a free quote on its website for more information about pricing.

Window World
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Low prices relative to competitors
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Lifetime warranty
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Large serice area
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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 company has been in business since 1995 and currently services 200 locations nationwide. Its reputation is backed by several positive reviews on customer review websites.
Window World may be the company for you if you want 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 appeals to eco-conscious consumers by providing energy-efficient window offerings. 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 Diamond Bar?Though prices are not available on Window World's website, it's known for offering some of the most affordable window installations around. If you'd like more accurate pricing information, you can inquire about a quote on the company's website.

Renewal by Andersen
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Great industry reputation
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Member of US Green Building Council
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Manufactures products in-house
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No lifetime warranty
Renewal by Andersen has the best availability in Diamond Bar. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has over 27 years of industry experience, and it currently provides services to nearly every state except Mississippi and West Virginia. Many positive reviews on customer review websites back the company's reputation.
You may want to consider opting for Andersen if you're looking for a company 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 make sure you mention that you want Energy Star windows when inquiring.
How much does Renewal by Andersen cost in Diamond Bar?Prices are not available on Andersen's website because the cost of window replacement varies greatly depending on how many and what type(s) of windows you need. However, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. If you'd like to know for sure, you can request a quote on the company's website.

Universal Windows Direct
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Makes charitable contributions
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Manufactures products in-house
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Wide variety of products and services
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Lifetime warranty
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Limited service area
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Some installations carried out by third-party contractors
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Quality of service will depend on your area
Universal Windows Direct has the best warranty in Diamond Bar. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has about 20 years of industry experience, and it currently serves 27 states nationwide. Hundreds of positive reviews from customers online back the provider's reputation.
If you're looking for a company that has an industry-leading warranty covering products, parts and workmanship for life, Universal may be the perfect provider for you.
Energy Efficiency of Universal Windows Direct WindowsUniversal Windows Direct is an Energy Star partner and has 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 be sure to mention that you want energy-efficient windows to your Universal representative when inquiring about services.
How much does Universal Windows Direct cost in Diamond Bar?Even though pricing is not available on Universal's website, installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. For more detailed information on the cost, you can ask for a quote from the company.
Please note that the companies in this section are national, which means the quality of customer service may vary depending on your local crew. We have tried to be unbiased and transparent by describing both pros and cons for every provider.
More Window Replacement Companies in Diamond Bar
The Glass Guru
Torrance, CA-
Locally Recognized for Quality
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Reliable Service
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Free Quotes
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Price Transparency
Services Offered
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Glass Showers
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Tempered Glass
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Custom Window Designs
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Aluminum Window Frames
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Full-Service Installations
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Business Windows
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Double-Hung
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Sliding Glass
The Glass Guru
Redlands, CA-
Award-Winning
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Arrives on Time
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Helps Educate Customers
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Reliable Service
Services Offered
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Glass Showers
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Tempered Glass
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Custom Window Designs
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Aluminum Window Frames
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Full-Service Installations
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Commercial Windows
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Double-Hung
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Sliding Glass
Broadway Glass & Mirror, Inc.
Long Beach, CA-
Educational Website
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Good Customer Service
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No-Hassle Pricing
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Reliable Appointment Windows
Services Offered
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Double-Hung
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Doors
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Full-Service Installations
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Custom Window Designs
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Residential Windows
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Business Windows
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Sliding Glass
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Aluminum Window Frames
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Glass Showers
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Architectural Glass
Smart Window Company
Torrance, CA-
No-fee Quotes
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Reliable Service
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Good Customer Service
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No-Hassle Pricing
Services Offered
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Residential Windows
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Architectural Glass
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Energy-Efficient Options
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Tempered Glass
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Custom Window Designs
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Aluminum Window Frames
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Business Windows
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Double-Hung
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Sliding Glass
A New View Windows & Doors Inc.
Anaheim, CA-
Price Transparency
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Locally Recognized for Quality
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No-fee Quotes
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Reliable Service
Services Offered
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Glass Showers
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Energy-Efficient Options
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Custom Windows
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Business Windows
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Double-Hung
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Sliding Glass
Eisenbart & Sons Glass, Windows & Doors
Mission Viejo, CA-
Educational Website
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No-fee Quotes
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Timely Service
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Dependable Service
Services Offered
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Residential Windows
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Custom Windows
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Aluminum Window Frames
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Commercial Windows
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Double-Hung
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Stained Glass
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Sliding Glass
Select Home Improvements
Anaheim, CA-
No-fee Quotes
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Excellent Customer Service
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Consistent Workmanship
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Arrives on Time
Services Offered
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Residential Windows
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Energy-Efficient Options
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Tempered Glass
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Custom Windows
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Double-Hung
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Sliding Glass
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Bay Windows
Metropolitan High Performance Windows
Anaheim, CA-
Consistent Workmanship
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Excellent Customer Service
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Locally Recognized for Quality
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Price Transparency
Services Offered
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Fast Delivery
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Custom Windows
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Aluminum Window Frames
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Double-Hung
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Sliding Glass
Golden Glass
Fullerton, CA-
Free Quotes
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No-Hassle Pricing
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Educational Website
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Reliable Appointment Windows
Services Offered
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Residential Windows
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Architectural Glass
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Heavy Glass
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Tempered Glass
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Doors
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Custom Windows
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Commercial Windows
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Double-Hung
Veracity Window and Door
Riverside, CA-
Reliable Appointment Windows
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No-fee Quotes
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Helps Educate Customers
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Consistent Workmanship
Services Offered
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Fast Delivery
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Energy-Efficient Options
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Custom Windows
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Business Windows
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Double-Hung
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Sliding Glass
Falcon Glass & Mirror
Redlands, CA-
Price Transparency
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Excellent Customer Service
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Reliable Service
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Arrives on Time
Services Offered
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Residential Windows
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Custom Windows
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Aluminum Window Frames
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Business Windows
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Double-Hung
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Sliding Glass
Devina Home Remodeling Orange County
Laguna Hills, CA-
Dependable Service
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Price Transparency
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Educational Website
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Good Customer Service
Services Offered
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Glass Showers
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Fast Delivery
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Custom Window Designs
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Full-Service Installations
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Commercial Windows
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Double-Hung
Tashman Home Center
West Hollywood, CA-
Good Customer Service
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No-Hassle Pricing
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Award-Winning
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No-fee Quotes
Services Offered
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Residential Windows
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Fast Delivery
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Custom Windows
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Aluminum Window Frames
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Business Windows
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Double-Hung
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Sliding Glass
Anaheim Glass
Anaheim, CA-
Helps Educate Customers
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Excellent Customer Service
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Price Transparency
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Reliable Service
Services Offered
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Custom Windows
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Fast Delivery
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Residential Windows
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Business Windows
California Window Masters
Irvine, CA-
Arrives on Time
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Consistent Workmanship
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Good Customer Service
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Award-Winning
Services Offered
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Fast Delivery
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Custom Window Designs
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Residential Windows
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Sliding Glass
Bodie's Glass Service
Westminster, CA-
Arrives on Time
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No-Hassle Pricing
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Reliable Service
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Excellent Customer Service
Services Offered
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Glass Showers
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Residential Windows
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Custom Window Designs
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Commercial Windows
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Sliding Glass
Window King
Huntington Beach, CA-
Price Transparency
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No-fee Quotes
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Excellent Customer Service
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Dependable Service
Services Offered
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Energy-Efficient Options
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Custom Windows
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Aluminum Window Frames
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Double-Hung
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Sliding Glass
Tesla Windows
Buena Park, CA-
Reliable Appointment Windows
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No-Hassle Pricing
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Dependable Service
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Free Quotes
Services Offered
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Energy-Efficient Options
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Custom Windows
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Aluminum Window Frames
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Double-Hung
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Sliding Glass
Anytime Windows and Doors
North Hollywood, CA-
No-fee Quotes
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Arrives on Time
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Price Transparency
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Helps Educate Customers
Services Offered
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Fast Delivery
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Energy-Efficient Options
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Custom Window Designs
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Aluminum Window Frames
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Sliding Glass
Design Windows and Doors Inc.
Ontario, CA-
Helps Educate Customers
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Reliable Service
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No-Hassle Pricing
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Free Quotes
Services Offered
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Energy-Efficient Options
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Custom Windows
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Aluminum Window Frames
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Double-Hung
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Sliding Glass
Safe Glass Window Replacement INC
San Bernardino, CA-
Price Transparency
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Excellent Customer Service
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Free Quotes
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Reliable Service
Services Offered
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Residential Windows
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Glass Showers
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Energy-Efficient Options
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Tempered Glass
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Custom Windows
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Business Windows
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Double-Hung
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Sliding Glass
GOLDEN BEAR GLASS & WINDOWS LLC
Los Angeles, CA-
Good Customer Service
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No-Hassle Pricing
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Educational Website
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Consistent Workmanship
Services Offered
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Residential Windows
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Architectural Glass
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Heavy Glass
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Energy-Efficient Options
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Tempered Glass
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Custom Windows
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Aluminum Window Frames
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Business Windows
How Installing Energy-Efficient Windows in Diamond Bar Saves You Money
When you switch to energy-efficient windows, you may see a few benefits, including:
- Save on power bills: Installing energy-efficient windows reduces your energy bills by about 12% since you use less energy.
- Decrease your carbon footprint: By using less energy once switching to energy-efficient windows, you'll also be decreasing your indirect greenhouse gas emissions by about 12%, according to Energy Star.
- Protect your investment: When you have an older home, your windows could also be outdated or damaged. Upgrading your windows is an important part of maintaining your property and its real estate value.
- Protect your valuables from fading: The low-emissivity coatings on some energy-efficient windows filter out damaging UV rays, preventing your furniture, carpet and other valuables from fading.
Estimated Cost of Window Replacement in Diamond Bar
Windows come in various shapes, purposes and styles, so costs and services will vary remarkably based on several factors. Below, we describe the average cost and services that you can get from window installation companies.
How Much Do New Windows Cost?
The national average cost to install a single window is about $600 but can range from $200 to $1,200. How much it will cost you depends on several factors, like size, number of windows, type, material, the location of your home and more.
It's also worth noting that energy-efficient windows will usually cost more upfront, but Energy Star estimates that switching out the windows on your Diamond Bar home can mean an average energy savings of $236 to $319 a year for single-pane window replacement, or between $87 to $126 a year for double-pane windows. How much you'll save by switching to energy-efficient windows depends on your local climate, energy rates and other factors unique to your home.
Asking for free quotes from several installers is the best way to find out which one will work best for your budget.
What Services do Window Installers Offer?
The first step of an installation is to think about whether you should get a full-frame or pocket installation.
Full-frame installations are usually recommended when you want to change the style of your windows or your window has significant rot or deterioration. With this service, your installers will replace the full window, including the trim, sill and frame. Pocket installations are on the simpler end and won't carry as large a bill because they entail simply replacing the window within its existing frame. But if the frame has any damage, you may have to get a full-frame installation instead.
Your window installation company should be able to help you decide which type of installation you should get.
Excellent Reputation
Milgard Windows & Doors
- EnergyStar Partner
- Wide network of installers
- Lifetime warranty available
- Limited additional services
Best Affordability
Window World
- Low prices relative to competitors
- Lifetime warranty
- Large serice area
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
- No lifetime warranty
How We Choose the Best Window Installers in Diamond Bar
In our search to make your home improvements easier and more eco-friendly in Diamond Bar, the EcoWatch Reviews team assessed many companies before settling on these. Along with energy efficiency, we assessed each installer and assigned rankings using the following methodology:
Service Area
This one is self-explanatory, but we've chosen to highlight window installers that serve a wide variety of states and cities so you can find a quality window installation company near you.
Work Quality
We're certain that you're looking for professionals who do a great job installing windows. We've vetted each installer in our guide to ensure its contractors are well-qualified and that the company has received a lot of positive customer feedback to vouch for its service.
Customer Reviews
We analyzed trends in recent online reviews to determine the companies with the most customer satisfaction, weighted by sample size. Customer satisfaction might be the factor we place the most value on, as it reflects the quality of services across most other categories, including quality of parts, quality of installation, cost, warranty, professionalism and more.
Cost
This one is a give-and-take: similar to most services, cheap window companies are not going to provide the most quality service. On the other hand, we want to ensure we're highlighting companies that offer a variety of price and financing options so they're accessible to most homeowners.
Warranty
As discussed previously, windows are a hefty investment, so you'll want to be certain that investment is well protected. Window installation companies that offer 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 a while. Window installation companies that have more years of experience earn higher rankings by our standards. We like to see at least ten years of experience.
Diamond Bar, CA Window Replacement FAQs
What is the typical cost to install new windows in a home?
The national average cost of installing one window is about $600 but can range between $200 and $1,200, depending on several factors. The price is often influenced by the location of your property, the size of the window and the type and material of the window. Also, bear in mind that energy-efficient windows may cost more upfront but can save you hundreds of dollars a year in energy bills.
What are the most common types of replacement windows?
There are various kinds of windows you can get for your house, such as transom windows, picture windows, slider windows, awning windows, casement windows, bay windows and double-hung and single-hung windows.
Can you replace your own windows?
If you're handy and have the time and patience to do the job right, you may be able to install your own windows. However, if you don't have the time or know-how, we don't recommend trying it.
What time of year is the best time to replace my windows?
Even though you can install windows any time of year, warmer weather is generally better for replacing windows. In addition, the weather should be dry, since rain can make the installation more difficult.
When is it time to replace your windows?
Windows typically last about 20 to 30 years, but anytime you see damage on your windows, it's a good time to have them checked by an expert to determine if they need any repairs or replacements.