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Business ProfileWindow Installers in Rancho Cucamonga, California

The Window Guys

Listed in Rancho Cucamonga 5.00 (1 review)(909) 466-0274

The Window Guys

The Window Guys sells and installs windows and doors in Rancho Cucamonga. Its crews handle retrofit and new-construction work, and the company offers moving glass wall systems in custom sizes for replacement projects.

Last Updated October 2, 2026.

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Business Highlights
  • The company lists California contractor license No. 899269.
  • It says its installations follow AAMA recommendations.
  • It says its installation work is not contracted out.
Service Area

Los Angeles, Orange, Riverside, San Bernardino and San Diego counties; the Inland Empire and Temecula Valley.

Active Business Listing

The Window Guys is one of 7 window installers ProsGrade lists in Rancho Cucamonga, California.

Active
Public local listing
Listing details

7 services listed, including Replacement windows and doors, Vinyl windows and Fiberglass windows. Open Monday to Saturday. Rated 5.0 from 1 review.

  • Verified listing details
  • Service information
  • Customer review signals
  • Photo gallery
  • Public contact information
  • Published local profile

How This Business Compares

How The Window Guys compares with the other 6 window installers on ProsGrade in Rancho Cucamonga, using public Google ratings and review counts.

  • Rated 5.0 on Google, well above the 4.4 average of other Rancho Cucamonga window installers on ProsGrade.

Services Covered

7 services
  • Replacement windows and doorsRetrofit and new-construction installation.
  • Vinyl windowsV400 Tuscany series.
  • Fiberglass windowsUltra series.
  • Aluminum windowsAnodized or baked-on frame finishes.
  • Vinyl doorsTuscany series; French and sliding styles.
  • Fiberglass doorsUltra series patio doors.
  • Moving glass wall systemsCustom sizes for replacement projects; standard sizes for new construction.

Reviews

What customers say

One customer described the work as professional and reliable and said the new doors and windows were beautiful. The same customer said David's eye and experience helped achieve the desired look, while Ceasar was willing to try to make the customer happy.

Customer Reviews

Ken Bostic

STOP LOOKING! THE WINDOW GUYS ARE YOUR GUYS! Superb, professional, artistic, personable, and reliable work. David is a salesman, yes, but trust him, he has an eye and the experience that will help you achieve the look you're going for. Ceasar is an artist and and a "yes" person, he will try to make you happy if he possibly can. Our new doors and windows are absolutely beautiful!! Everyone goes nuts when they see the upgrade. We always liked our home, but now we love it. Do what you have to, budget and save and put in the doors of your dreams, it will change the way you feel about your home, it was worth every dollar!
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Frequently Asked Questions

Can The Window Guys take on a single-window job or a whole-house package?

It says it can replace one window or provide a complete new-house package from blueprints.

How does The Window Guys help customers choose products?

When a customer is unsure what they want or what is available, the company says it guides them through the process from start to finish.