Pro Listing

The Window Guys

Corona Window Installers
Ranked #12 in Corona | Grade C+
3.90 (17 reviews)

The Window Guys

The Window Guys provides window and door replacement services with showroom hours Monday through Saturday. The team coordinates measurement, ordering, and installation, and can discuss brands and styles suited to your project.

Why Homeowners Choose This Business

Local showroom presence, coordinated measurement-to-install approach, and a range of window and door options. Customers often highlight clear communication from sales reps and efficient installation crews.

Service Area

Based in Corona and serving nearby neighborhoods and cities across the Inland Empire. Call to confirm availability for your location.

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Listing details

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

How This Business Compares

A quick local comparison based on review strength, business detail, and local service fit.
  • Has an established presence within this local market.

Services Covered

  Renovation Services
  Installations
  Window Replacement
  Vinyl Windows
  Energy Efficient Windows
  Patio Door Installation
  Sliding Glass Doors
  Entry Door Replacement
  Retrofit Windows
  Window Installation
  House Windows
  Milgard Windows

Services include consultation, measurement, product selection, and installation of replacement windows and doors, including sliding patio doors and front entry doors.


Reviews

Recent Reviews

3.90

(Based on 17 reviews)

Reviews are mixed. Positive feedback highlights responsive sales communication, fair pricing, and efficient, same-day installations on larger projects. Critical reviews mention scheduling delays and communication gaps around product readiness, as well as concerns about materials used during installation. Overall themes include communication, scheduling reliability, and on-site workmanship.

Google Review
William Curtis on The Window Guys

Ordered our windows in April. We had to postpone once due to our tenants. They keep bumping us because other customers windows have come in. Now middle of June and they are wanting to bump us to July. Made us pay full price for the windows when we needed to postpone once. Now we are going to try to pick up windows and hire someone else. It should not take this long when our windows are in their warehouse. Selling the house so can’t wait forever to fit in their schedule.

Google Review
Edward E. on The Window Guys

We used The Window Guys in Corona for our new windows, slider doors and front doors. Robert W was our sales contact and he was very professional. He visited our property a few times to take measurements and answer all of our questions. Their price was very fair, especially when compared to the competition. Installation was fast but not rushed - we couldn’t believe they were able to get it all accomplished in 1 day but they arrived with plenty of crew members. They did a great job matching exterior stucco, interior trim, and getting everything back together and cleaning up. We highly recommend The Window Guys.

Google Review
R Ybarra on The Window Guys

If ever a company deserved a bad rating, this is the one. The Window Guys installed three slider patio doors at our house. The resulting smell of organic vapors inside the house was immediate, overwhelming and impossible to stop. We called the company and begged them to tell us what they used for sealant. It took a week for them to respond. The official documents they eventually sent stated the sealant is designed for “Exterior use only” and contains “chemicals that are known to the State of California to cause cancer.” It also stated “Do not use inside occupied dwellings” We contacted the manufacturer of the sealant. They told us it may never dry and should not have been used under a patio door track because that is an interior use. They said the sealant contains chemicals that should not be breathed and should be removed. After 30 days, we had the sealant removed.

The removal and replacement with the proper sealant cost us over $10,000.

But, that’s not all. One of the slider doors the Window Guys installed did not lock properly and had to be lifted onto the latch. This was impossible for my wife as it was too heavy. Also, the stucco work around the sliders was done with a 4-inch putty knife not a stucco trowel and did not match the existing stucco. What’s worse, when the slider patio doors were being removed, the new contractor pointed out that screws were non-existent on one side of the slider frame that didn’t latch.

It’s only fair to say, we took the Window Guys to small claims court and lost. The official documents from the manufacturer were not enough evidence for the judge. The owner presented himself as an expert who “follows industry standards.” But, the judge could not verify that claim in the courtroom. So I checked later.

Milgard, the window manufacturer stated there are no industry standards for sealant and contractors should follow sealant manufacturer guidelines. The American Architectural Manufacturers Association says exactly the same thing, “Use sealant recommended and approved by the sealant/flashing manufacturer.”

It should be noted that this sealant was designed and patented by chemical engineers with PhD degrees in chemistry. They are the true experts.

You don’t have to believe me. You can go to Home Depot and buy this sealant and smell it for yourself. It’s called OSI Quad. You’ll notice the tube is clearly marked “Exterior use only.”

Incidentally, I polled the top 10 window replacement companies listed on Google. None of them use OSI Quad as a sealant for patio slider doors.

If I could give The Window Guys the rating that they actually earned, it would be a negative 5 stars. My mistake was hiring them in the first place. That mistake cost us $10,000.

Google Review
Jim Lineberger on The Window Guys

We had 18 windows installed on 6/14/24. This contractor was an authorized company for Milgard Windows. We had our quote and then a few weeks later we had the windows installed. Cade Clark was the lead installer. He and his crew did an awesome job, Very knowledgable, polite, professional and hard working. We are very happy with the windows and the instsallation. Wish we had done this sooner.

Google Review
Mark Yegsigian on The Window Guys

I was very pleased with this company. They came all the way out to Canyon Lake and were on time. The crew was very professional when taking the measurements and installing the new windows. The whole process was seamless. I love my new windows! I would highly recommend The Window Guys for your next window installation.

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Frequently Asked Questions

They handle replacement windows, sliding patio doors, and entry doors. Specific brands and series may vary, and some customers mention Milgard in reviews; ask the team for current options and availability.

Timelines depend on product lead times and the size of the job. Some customers report fast, single-day installations once materials are on site, but others note delays when schedules change. Confirm your projected install date in writing.

Yes, reviews and site snippets indicate they schedule in-home appointments for measurements and product discussions. Call the office to arrange a visit and to learn what to expect during the appointment.

They appear to handle whole-home window projects as well as smaller jobs. The feasibility depends on product availability and crew scheduling, so discuss scope and staging during your quote.

Confirm product specifications, lead times, payment milestones, and the planned installation date. It’s also wise to ask about sealants and materials to be used and any post-install ventilation recommendations.
 Verified Listing

Opening Hours


  • Monday 9:00 AM – 5:00 PM
  • Tuesday 9:00 AM – 5:00 PM
  • Wednesday 9:00 AM – 5:00 PM
  • Thursday 9:00 AM – 5:00 PM
  • Friday 9:00 AM – 5:00 PM
  • Saturday 9:00 AM – 2:00 PM
  • Sunday Closed

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Business Details


Business Rating
3.90 (17 reviews) Pro Listing
Address
2033 Cecilia Cir, Corona, CA 92881
Phone
Business Type
general_contractor

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