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10 Best Window Replacement Companies in Diamond Bar, CA

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Written By David Cusick

Last Updated June 2024

Whether you want to increase your home's value or decrease your energy bills, upgrading your windows is an excellent idea. In Diamond Bar, where the power bills are $1,200 per year on average, you could be spending an extra $356 annually due to outdated windows. The Department of Energy estimates that heat gained or lost through windows could represent around 30% of heating and cooling use. When looking for a window installation company, it's important to choose the right one, which is why we've put together this guide to the best window installers in Diamond Bar.

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Top Pick
4.1/5
  • Great quality
  • Free assesment
  • Timely Service
Most Customizable
4.0/5
  • Holds high customer ratings
  • Offers energy-efficient products
  • Provides a lifetime labor warranty
Best Customer Service
4.0/5
  • Award winning company
  • Products made in the US
  • Knowledgeable sales representatives

Top 10 Best Window Replacement Companies in Diamond Bar

Advertisement This site receives compensation from some of the companies featured in this listing, which may impact where and how products appear. When you click "Get Quote," you will be connected with partners who may contact you with information related to your inquiry. This listing doesn't feature all companies, products, or offers that may be available.

Renewal by Andersen of Orange County

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22982 Alcalde Dr, Laguna Hills, CA 92653 (949) 265-7600 renewalbyandersen.com

Price transparency

Good customer service

Free assessment

Educational website

Services Offered

Double-hung
Bay windows
Window replacement/installation
Glass doors

Design Windows and Doors Inc.

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504 S Mountain Ave, Ontario, CA 91762 (909) 365-2179 designwindowsinc.com

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Free assessment

Good customer service

Educational website

Timely service

Services Offered

Wood frames
Fiberglass frames
Energy-efficient options
Glass doors
Bay windows
Double-hung
Window replacement/installation
Vinyl frames

Home Services at The Home Depot

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600 S Harbor Blvd, La Habra, CA 90631 (562) 265-8629 homedepot.com

Good customer service

Free assessment

Price transparency

Educational website

Services Offered

Window replacement/installation
Glass doors
Mirrors
Screen repair
Storm/impact windows
Energy-efficient options
Bay windows
Custom window designs
Vinyl frames
Glass showers

Advance Windows & Doors

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20442 Carrey Rd, Walnut, CA 91789 (909) 444-2000 advancewindowsanddoors.com

Good customer service

Price transparency

Educational website

Free assessment

Services Offered

Vinyl frames
Window replacement/installation
Energy-efficient options
Tempered glass
Fiberglass frames
Glass doors
Bay windows
Double-hung

Sears Window Replacement

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5080 N Montclair Plaza Ln, Montclair, CA 91763 (626) 313-3940 searshomeservices.com

Good customer service

Free assessment

Services Offered

Glass doors
Window replacement/installation
Bay windows
Double-hung
Storm/impact windows
Vinyl frames
Energy-efficient options

La Verne Glass &Screen

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1782 N White Ave, La Verne, CA 91750 (909) 593-8317 laverneglassandscreen.net

Good customer service

Price transparency

Educational website

Free assessment

Services Offered

Custom glass
Mirrors
Custom window designs
Glass showers
Glass doors
Window replacement/installation

Dreamstyle Remodeling

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16223 Arrow Hwy Bldg. A, Irwindale, CA 91706 (323) 880-6095 dreamstyleremodeling.com

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Free assessment

Good customer service

Price transparency

Services Offered

Glass doors
Glass showers
Window replacement/installation
Bay windows
Double-hung
Custom window designs

Window World of Los Angeles

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718 Arrow Grand Cir, Covina, CA 91722 (310) 564-7299 windowworldla.com

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Good customer service

Free assessment

Services Offered

Bay windows
Window replacement/installation
Double-hung
Glass doors
Vinyl frames

JK Glass & Mirror Inc

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4155 Alderson Ave E, Baldwin Park, CA 91706 (626) 315-7491 jkglassca.com

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Free assessment

Educational website

Good customer service

Services Offered

Custom glass
Mirrors
Glass showers
Glass doors
Glass repair
Window replacement/installation

Hometime Windows & Doors

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859 E Rte 66 Suite A, Glendora, CA 91740 (626) 618-8557 hometimewindows.com

Good customer service

Educational website

Free assessment

Price transparency

Services Offered

Window replacement/installation
Energy-efficient options
Glass doors
Today's Homeowner Ranking Methodology

Today's Homeowner looks at dozens of datapoints on window replacement companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

How Much Does Window Installation Cost In Diamond Bar?

Window installation and replacement costs depend on several factors, including how difficult your windows are to access or install, the materials you choose, and the number and size of the windows. On average, homeowners in Diamond Bar should expect to spend about $290 per window*. Below are additional cost breakdowns. *Cost data based on sample pricing for window installation from multiple retailers and adjusted for local cost of living.

When To Replace Windows

Replacing your existing windows with new energy-efficient ones can significantly improve your home's appearance, noise reduction, comfort, value, and insulation. Signs it's time to invest in new windows include:

  • Windows that are difficult to close, open, and lock properly due to wear and age.
  • Inefficient and outdated window styles that detract from your house's curb appeal.
  • Condensation issues, fogging between window panes, or rotting window frames that let in moisture.
  • Discomfort and high energy bills from poor insulation around windows.
  • Drafts and cold air coming in from old, loose-fitting windows.

How To Choose a Window Company

For a successful window replacement, you want to hire an installation contractor with proven expertise. Below, we cover the most important criteria for picking a window installer.

Experience

Look for highly-regarded local companies with a long track record of experience successfully installing all types of windows. These providers are more likely to have a deep knowledge of Diamond Bar's climate and local homeowner needs. Request references from recent clients to verify quality and experience.

Certifications

Select an installer that is accredited by leading window companies and associations like the Fenestration and Glazing Industry Alliance, formerly known as the AMMA. Proper certification indicates that a contractor has training in best practices for installation. Confirm that installers are staff, not subcontractors, and check that the technicians working on your home are certified.

Reputation

Spend time reviewing online feedback, checking the Better Business Bureau, and requesting local references. Review customer feedback to make sure that a company consistently does quality work and provides good service. Avoid companies with complaints of poor work or unfinished jobs.

Process

A quality window installer will be able to provide a detailed project plan, precise timelines, clear expectations, and an overview of all material and installation options. Avoid companies that provide ambiguous quotes or schedules. Insist on continual contact through the whole process to avoid surprises later on.

Warranties

Look for companies that stand behind their work and provide warranties on products and labor. This demonstrates trust in their window installations. Look for unlimited lifetime warranties that can transfer to new homeowners.

Materials

Make sure the window company offers durable, long-lasting window options and top energy-saving window brands within your budget. Look for good energy ratings, enhanced UV protection, and design flexibility. Check that the window materials also include manufacturer warranties.

Frequently Asked Questions About Window in Diamond Bar, CA

In Diamond Bar, the optimal time to install windows is during the winter when the temperature is not as high, so the windows can seal and adjust properly. A professional local window installer in Diamond Bar will be able to tell you when the best time is to install windows on your home.

The best type of replacement window for your Diamond Bar home will vary based on the age of your home, as well as your personal style and budget. You'll want to consider the style of your home — such as if it's newer — so your new windows match. Wood windows can give a classic look and feel, while vinyl-framed windows are more popular in more modern homes. Fiberglass windows are also a popular choice, as they are energy efficient and long-lasting.

The types of window that usually last longest are ones made of vinyl or wood, with double glaze for extra insulation. Vinyl windows are known for their long-lasting nature and require little maintenance, and wood windows offer a more traditional look. Tripling up on the glazing will help reduce energy costs over time. This is especially helpful during Diamond Bar's hot summers.

The process for window installation typically includes measuring the space, removing the existing windows, installing the replacement windows, inspecting for proper insulation, and caulking around the edges of the frames. Additional steps may be necessary depending on the kind of window being installed.

Yes, many window companies offer payment plans for their services. Different companies have their own financing options, so you should shop around to find the best option for you. Depending on your income level, which is a median of $106,881 a year in Diamond Bar, you may be able to qualify for special payment plans.

Window companies in Diamond Bar usually offer a range of services, including measuring and installing new windows, repairing existing windows, swapping out window glass, and installing window treatments. They may also offer extra services such as weatherproofing or cleaning.

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