We may be compensated if you purchase through links on our website. Our Reviews Team is committed to delivering honest, objective, and independent reviews on home products and services. More
New window replacement installed in a home

Best Window Replacement Companies in Diamond Bar, CA

Get matched with a top local pro
Join the 6,755 people who have received a free, no-obligation quote in the last 30 days
  1. Home
  2. Local Pros
  3. Window Replacement
  4. CA
  5. Diamond Bar
Written By Max Peterson|Last Updated: May 18, 2024

Replacement windows can defend your home from drafts and moisture problems, increase its energy efficiency, and provide it with some additional aesthetic appeal. A reputable window contractor can help you get the most value from your replacement windows, so you can make them work for you.

Top Pick
4.7
  • Full-service installation
  • Large window selection
  • Nearly 30 years of experience
Most Customizable
4.3
  • Full-service remodeling
  • 96% satisfaction rate
  • More than 30 years of experience
Best Window Selection
4.3
  • Free Quotes
  • 2022 J.D. Power award winner
  • Materials sourced within the U.S.

Top 10 Diamond Bar Window Installation Companies

We recommend these local contractors for your window replacement project in Diamond Bar.

The This Old House Reviews Team assessed dozens of window replacement companies in and around Diamond Bar. We took into account the following factors to determine the best window replacement installers:

  • Services and warranties
  • Professional experience and licensure
  • Energy-efficiency guarantees
  • Product quality
  • Customer reviews and recommendations
Window World of Los Angeles Logo

Window World of Los Angeles

GET QUOTE
4.4/5
Based on 31 customer reviews.

Services Offered

Double-HungWindow Replacement/installationVinyl FramesGlass DoorsBay Windows

Highlights

  • Good customer service
  • Educational website
  • Price transparency
718 Arrow Grand Cir, Covina, CA 310-564-7299 windowworldla.com
SoCal Window Pros Logo

SoCal Window Pros

4.7/5
Based on 46 customer reviews.

Services Offered

Window Replacement/installation

Highlights

  • Good customer service
  • Educational website
  • Free assessment
482 W Arrow Hwy Unit A, San Dimas, CA 909-394-7777 socalwindowpros.com
Hometime Windows & Doors Logo

Hometime Windows & Doors

4.7/5
Based on 99 customer reviews.

Services Offered

Glass DoorsWindow Replacement/installationEnergy-Efficient Options

Highlights

  • Educational website
  • Price transparency
  • Free assessment
859 E Rte 66 Suite A, Glendora, CA 626-618-8557 hometimewindows.com
Mancino Door & Window, Inc. Logo

Mancino Door & Window

4.6/5
Based on 82 customer reviews.

Services Offered

Window Replacement/installation

Highlights

  • Price transparency
  • Free assessment
  • Good customer service
605 E Rte 66, Glendora, CA 626-334-2525 mdwdoors.com
W.C. Heritage Shutters and Blinds Logo

W.C. Heritage Shutters and Blinds

4.7/5
Based on 38 customer reviews.

Services Offered

Custom Window DesignsWindow Replacement/installationGlass Doors

Highlights

  • Good customer service
  • Price transparency
  • Timely service
317 W La Habra Blvd Suite 101-210, La Habra, CA 714-707-4856 wcheritage.com
Glendora Glass & Mirror Logo

Glendora Glass & Mirror

4.5/5
Based on 16 customer reviews.

Services Offered

Glass ShowersWindow Replacement/installationMirrors

Highlights

  • Price transparency
712 E Rte 66, Glendora, CA 626-335-3699 glendoraglass.com
Design Windows and Doors Inc. Logo

Design Windows and Doors

4.5/5
Based on 178 customer reviews.

Services Offered

Bay WindowsVinyl FramesWindow Replacement/installationFiberglass FramesEnergy-Efficient OptionsWood FramesGlass DoorsDouble-Hung

Highlights

  • Timely service
  • Good customer service
  • Price transparency
504 S Mountain Ave, Ontario, CA 909-365-2179 designwindowsinc.com
La Verne Glass &Screen Logo

La Verne Glass &Screen

4.5/5
Based on 33 customer reviews.

Services Offered

MirrorsGlass ShowersCustom GlassCustom Window DesignsGlass DoorsWindow Replacement/installation

Highlights

  • Free assessment
  • Price transparency
  • Good customer service
1782 N White Ave, La Verne, CA 909-593-8317 laverneglassandscreen.net
Dreamstyle Remodeling Logo

Dreamstyle Remodeling

4.4/5
Based on 49 customer reviews.

Services Offered

Window Replacement/installationCustom Window DesignsDouble-HungGlass ShowersBay WindowsGlass Doors

Highlights

  • Good customer service
  • Price transparency
  • Educational website
16223 Arrow Hwy Bldg. A, Irwindale, CA 323-880-6095 dreamstyleremodeling.com

More Local Window Companies

J. R. Door & Window Inc

User Reviews: 4.3/5 

615 N Benson Ave Unit I
Upland, CA 91786

Molding's Plus Inc

User Reviews: 4.4/5 

1856 S Grove Ave
Ontario, CA 91761

East Whittier Glass & Tinting

User Reviews: 4.4/5 

2251 W Whittier Blvd
La Habra, CA 90631

Energy Core Construction

User Reviews: 4.6/5 

1241 N Lakeview Ave suite h
Anaheim, CA 92807

Dede Windows and Doors / window replacement

User Reviews: 4.7/5 

1196 Osprey Cir
Anaheim, CA 92807

Win-Dor Replacement Windows & Doors Brea Showroom

User Reviews: 3.9/5 

450 Delta Ave
Brea, CA 92821

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

New window replacement installed in a home

Get Your Window Replacement Project Quote Today

Get matched with a top local pro

Please enter a valid 5-digit zip code!

Facts about Diamond Bar
Annual Energy Efficient Windows Savings:$509
Average Max Temp:71°F
Average Min Temp:53°F
Average Daily Sunlight:72%
Average Annual Snowfall:0"
Average Monthly Precipitation:1.26"

Expert Tips By

This Old House empowers homeowners with the knowledge and tools they need to tackle various projects and navigate the complexities of homeownership.

How To Choose a Window Company in Diamond Bar

Reliability is essential when it comes to choosing a window replacement company. However, your chosen company should also align with your priorities and respect your vision. Think about the following factors during your company search:

Window Cost by Type

When it comes to replacing your windows, cost-effectiveness is most important. Each window you buy should offer maximum durability at an affordable price point. Choosing budget windows could actually increase your overall cost, since they come with a shorter lifespan and more intensive maintenance needs. The final cost of your replacement windows will depend on the specific sizes, styles, and materials you need. Simple double-hung windows deliver great value with their straightforward style and simple mechanisms, while new skylights cost more to prepare for and install. It's advisable to speak with a reliable window installer to determine your most suitable options.

To help you form a rough estimate, this table shows the typical cost of the most common residential window types.

Window TypesAverage Cost
Arched$243-$1495
Awning$352-$981
Bay$812-$6025
Custom$361-$1004
Casement$281-$1629
Double-hung$131-$848
Egress$241-$601
Glass Block$48-$609
Picture$211-$1562
Single-hung$95-$1606
Skylight$120-$1450
Sliding$276-$1405
Storm$57-$397
Transom$294-$615

Window Material Cost

You'll also need to pick a window material. Homeowners usually choose a material based on aesthetic preferences, the local climate and energy efficiency objectives. Aluminum windows are perfect for sleek, modern designs, but they cost more up-front. You'll pay less for wood windows up-front, but you'll need to invest in regular maintenance to prevent the frame from warping and wear. Vinyl is readily available and tends to cost less, but don't underestimate its strong durability and low maintenance needs.

Window TypesAverage Cost
Aluminum$57-$1606
Composite$580-$1303
Fiberglass$95-$812
Vinyl$195-$1807
Wood$290-$1629

Other Window Replacement Costs

Your total cost for window replacement will also include warranty fees (if applicable), permit application fees, and labor. Make sure to discuss each of these factors with an estimator before committing to a window company.

Experience and Training

Choose a business that focuses on window replacement and repair, and look for this information on its website:

  • The number of years it's been in business
  • Photo galleries of completed projects
  • Private certificates attesting to its workmanship
The more experience a company has, the better its service and workmanship.

Licensing and Credentials

A California window business must be licensed as a Window Coverings Contractor, Glazing Contractor and General Building Contractor if it handles jobs valued at over $500. Each license has its own test and work requirements. If a contractor is caught working without a license, they'll have to pay hefty penalties.

Types of Windows Offered

There are many replacement window types you can choose from, and it's essential to find a company that focuses on installing the ones you want. Search a company's website and reviews for any of these types:

Equally important to your desired windows' shape is their framing. Ask your window installer if it offers the frame material you want, such as wood, aluminum, composite, fiberglass, or vinyl.

Customer Feedback

Perhaps the best way to vet window companies for your job is to check what previous customers have said about them. You can find customer reviews on websites like Yelp, Trustpilot, Google, and the BBB. Speak with people you know who have used a company you're interested in, and ask a representative for a copy of its reference list.


Ready to Get a Quote on Your Window Project?

Get matched with a top local pro

Please enter a valid 5-digit zip code!

Frequently Asked Questions About Window Replacement in Diamond Bar

Why should I hire a professional to install or replace my windows?

By hiring an expert, you don't need to worry about making measurement mistakes or not having the right tools. A window installation crew is well-equipped with the right tools and training to do the job safely and accurately. You can also get fast, informed answers to your questions and customized assistance to make the most of your new windows

Does window replacement involve pulling permits?

Whether you need a building permit to replace your windows will depend on your local building codes and regulations. Some municipalities require permits for window replacement projects, especially those involving structural changes or alterations to the window openings. Generally speaking, it is recommended to check with your local building department or contact a professional before undertaking any window replacement work.

What kinds of repairs can my window company perform?

Window companies can perform a variety of repair jobs, ranging from broken glass and screens to faulty seals and mechanisms.

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

More Window Resources

National Windows Company Ranking Methodology

Sources

Energy Star