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    The Window Guys

    3.9 (114 reviews)
    Closed 9:00 am - 5:00 pm

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    1 day

    Response rate

    100%

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    I'm super late on my review but I really wanted to leave a review and share my great experience with The Window Guys. I actually got a WinDor bi-folding door from them back in Jan'23. They helped take out a wall and install the bi-folding door to open up our home so we could really enjoy an indoor-outdoor living space, all in one day. And it came out beautifully, I mean look at the before and after pics. Recently, and this is in Dec'25, with the rains, I started noticing a leak on one of the bottom corners. I called TheWindowGuys about it and they sent out a technician right away to fix the problem. Great pricing, great craftsmanship, and great integrity. Thanks Window Guys, you're a great company and I appreciate your business!

    All windows are like this

    I would NEVER recommend this company I had 34 windows and a patio door installed and what a nightmare first they left debris all over my property and more than half of the windows are hitting my indoor shutters and in order to open the windows the shutters have to be opened first when we had the thunderstorm this past February my house flooded I called and spoke with Corina and informed her and asked for someone to call me back and I haven't heard from anybody. I filed a claim with the California State license board and sent them a demand letter. They NEVER pulled a permit which is a requirement for my city and county. The glue they used left an awful smell inside for a week. They over spread the white caulking onto my brown stucco and haven't done anything to repair the damage. They damaged my newly installed vinyl flooring. I paid over $30K for subpar workmanship. There were a couple of windows with scratches in them and several screens that didn't fit and Milgard said that the work was completely back in January so I filed a complaint with Milgard as well. The patio door has damage to it. I informed them to pull a permit and have not gotten a response

    Abbie B.

    I needed 8 windows replaced at my condo. I was worried because my HOA can be intense about requirements and I specifically needed someone that was Milgard certified and carried a specific window type with gridlines. I got FIVE different quotes across Rancho Cucamonga. When I called to request a quote, TWG were here within 2 hours taking measurements and sent me a quote in writing the next business day. Then they offered 10% off if I signed the quote by the end of the week. It was a no-brainer. I saved over $1,000 compared to the other quotes I got. I put down a 10% deposit and paid the balance the day of the install. THEN today was install day. They gave me clear instructions in writing ahead of time about clearing space around each window and removing blinds, etc. They also let me know they'd arrive between 8-9am. They were here within the promised window and they were SO FAST, efficient and professional. Angel and Kade did our install like a well-oiled machine. They were done before noon and I was shocked. Fast doesn't always equal good quality, but in this case it totally was! Everything looks awesome. On top of that, I had my two dogs AND 2 y/o running around and they were so kind in their interactions with them. These are clearly experienced professionals who take pride in their work and time efficiency. P.S. They used drop cloths, swept and vacuumed, removed all the window stickers and wiped everything down. Major clap clap clap for these guys.

    Before front patio
    Omar P.

    The process of going through The Window Guys was pretty smooth. No complaints here. Jim came out to measure the area and helped us out throughout the process along with Nancy, whom I had communicated with through emails and phone calls. Everything was pretty straightforward. The guys came out and did the install on both windows in a day. Closing off two doors and replacing them with sliders. The stucco work was a little uneven, but not everything can be perfectly matched in that regard. Overall, they did a great job! The install crew was great and they cleaned up after themselves. I would recommend The Windows Guys everyday all day. Thank you The Windows Guys, Jim and Nancy, in particular.

    And precise.

    We had new milgard double pane windows installed in 2014. They carry a lifetime warranty. Who knew we would need it. Some neighbors shot a paint gun thing through one of the windows breaking one pane. Thankfully I kept the warranty and registered them. The warrantyis for as long as i own my home. Cool, becauseim not moving. I called the eindow guys. Milgard called me and within a week they came out and replaced it No askin a bunch of questions or hassles. The guy was in and out in less than 10 minutes. I would recommend Milgard windows.

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    Fast install professional job and great price. High recommendation for some needing a few windows or replace all

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    Page 1 of 3

    Ask the Community - The Window Guys

    Review Highlights - The Window Guys

    Bill, the salesman, was very helpful in helping us determine the type and style of new window that would meet our needs the best.

    Mentioned in 13 reviews

    Read more highlights

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    Ameristar Windows & Doors

    Ameristar Windows & Doors

    4.6
    (9 reviews)

    Soon after purchasing our home, we realized our original, 20-year-old patio doors needed immediate…read morereplacement. The broken-down seals were causing significant heat loss/gain and allowing bugsinside. After comparing quotes from several local companies and Costco, we chose Ameristar. The deciding factor was their reasonably priced door with a built-in doggie door for our two 70 lb dogs go outside to fo their thing. Other companies either didn't offer this option or quoted more than double the price. Our sales representative, Larry, was exceptionally knowledgeable and friendly. Scheduling and installation were quick and efficient. The installation team did a beautiful job. Apologies for the dirty windows/dog door, we've had them up a few months. After 3 months, the doors are holding up great. We will definitely be using Ameristar again when it's time to replace our windows.

    Several of the windows in my home face due south. Although they were double pane, they had almost…read morezero insulation remaining after 25 years of massive sun. The temperature in the south facing bedroom on a hot 90 degree plus day would always be nine degrees hotter than the rest of the house. I decided to replace not only the four windows in the south facing bedroom, but six other windows that can be viewed in the same field of vision from the street, to keep the aesthetics consistent. The replacement windows I selected are double pane argon gas filled to help keep the heat out during the summer season. I put out a bid on Yelp and narrowed the field down to two companies, Note I did not select the least expensive bid, but actually selected the most expensive bid. My reasoning was a solid five star Yelp rating, BBB A+++ rating and the knowledge and excellent follow up provided by the salesperson, David White. Other factors in my decision were silver coating on the glass to reduce the intense green hue that most argon gas filled windows exhibit and exterior window casings that are solid without decorative ribs that would collect dirt. I was provided with a detailed explanation of the process and same day estimate. The process from start to finish took five weeks. This would have been as little as two weeks if I did not have an arch top window. Curved windows take longer to build, at least for Ameristar. It took me a while to prepare the two rooms, so I was not in a big hurry. The installation was done yesterday. The crew was on time, polite, and from my view, was extremely careful and exhibited excellent attention to detail. The 10 windows were installed in one day. The crew cleaned up their mess very well and everything went according to plan. I am completely satisfied with the entire process. The windows are very elegant looking, not so green and make the house look better. I trust that the temperature in the south facing bedroom will level out with the rest of the house with the argon gas in the windows. Five stars all the way. Well done.

    United Builders

    United Builders

    4.8
    (195 reviews)

    What a great experience we had with United Builders from the first phone call all the way to the…read morefinal payment and finished product. The whole team was phenomenal, professional and the customer service was the best, by far, that we've experienced in many years, we can't say enough about this wonderful journey in getting our new windows. The team always called to introduce themselves and tell us their part and what we could expect from them and then, they always followed up with a text when they couldn't reach us on the phone. Punctuality, great product, communication, price and I can't say enough about the customer service.. off the chart! We had 15 windows installed and the quality in the installation and the precise cuts in the framing added such a great detail to each window inside the house and the way they retro fitted the exterior part of the windows with our wood trim.. it came out looking better than before and like they were one piece with the wood trim. My picture window and rain privacy glass windows are my favorites, they stand out and wow, is an understatement. Im a very picky, cautious person and a big do it yourself person...Thank you to the whole team for surpassing my expectations, putting my nerves to rest and for making this undoubtedly one of my best hiring experiences!

    Awful! Do not purchase angling windows!…read more They are cheap and not worth the money! The installation is poor Reach out to come see the product they sell before your purchase Do your homework first. The company only sells the windows and DOES not service or stand by their product

    Vitro Glass Hardware

    Vitro Glass Hardware

    1.0
    (2 reviews)

    On 8/26 Chris Black was hired and paid in full so that I could get the better pricing he promised…read moreto do two bathrooms of SHOWER Doors. After coming back to measure twice because he messed it up. And many promises to show up and do the job he continually did not show up. So many excuses and so many lies for weeks we finally canceled the job. He promised and swore in writing to Refund my money! I have chased him for weeks again and all the stories and lies and he has not attempted wants to show up bring the money back or mail it to me. He has several company names and several phone numbers obviously to invade his responsibilities. Please beware of him and do not do business with him for any reason. He is a shyster a liar and a thief. And to all the hard-working contractors out there this guy should not be able to do this to anyone again!

    Buyer beware!!! Chris is the owner and wow talk about dishonest. SO we had 2 shower doors installed…read morein our home April 6, 2022. He sent his guys to my home and first they installed the first fixed shower door on the wrong side even though everything was in writing so I had to call Chris to let him know because they were about to the the same mistake in my other bathroom. Obviously holes were made for the fixed shower panel on the wrong side so here I have holes in my tile, which this was 2 months ago and have yet to be fixed by Chris even after numerous calls and texts and no answer. After the finished installing 2 shower doors (9 hours later) they taped up the shower doors so I couldn't slide the doors to check the work but was expected to pay in full before they left and I did (oh mind you he only takes cash or zelle - first red flag). After 72 hours I went to check on the doors, took the tape off and both shower doors were installed wrong, One shower door you can fit your whole hand under the door that closes and opens and the other gets caught when you try to open it and when you close it it doesn't stay shut. Also lets not talk about the fact that his workers left my home a total mess. Metal shavings all over my sons bathroom floor and his bedroom which I did not get to clean up before my son got a piece stuck in his foot, garbage left on the floors, in my small garbage cans etc. Also took me 3.5 hours to scrape all the excess glue that they got all over the shower doors and both of my bath tubs. The list goes on. I texted Chris videos and pictures of everything and he himself was appalled of everything I sent him. I asked him for a site visit and he promised that everything was going to be fixed and we made an appointment for him to come see us. Well I texted him the night before to confirm he was coming the next day no answer. I called him and texted him the next morning because we stayed home for the morning from work to meet him and he completely ghosted us and he was a no show. I continued to text and call him for days and nothing. He has yet to make this right and he took down his FB page and has not responded to any calls or texts. So here I have 2 shower doors that are not 100% functional and holes in my tiles after all this time. STAY AWAY from this guy. What a looser!!!! KARMA will get you Chris!

    Ameristar Windows

    Ameristar Windows

    4.8
    (114 reviews)

    Several of the windows in my home face due south. Although they were double pane, they had almost…read morezero insulation remaining after 25 years of massive sun. The temperature in the south facing bedroom on a hot 90 degree plus day would always be nine degrees hotter than the rest of the house. I decided to replace not only the four windows in the south facing bedroom, but six other windows that can be viewed in the same field of vision from the street, to keep the aesthetics consistent. The replacement windows I selected are double pane argon gas filled to help keep the heat out during the summer season. I put out a bid on Yelp and narrowed the field down to two companies, Note I did not select the least expensive bid, but actually selected the most expensive bid. My reasoning was a solid five star Yelp rating, BBB A+++ rating and the knowledge and excellent follow up provided by the salesperson, David White. Other factors in my decision were silver coating on the glass to reduce the intense green hue that most argon gas filled windows exhibit and exterior window casings that are solid without decorative ribs that would collect dirt. I was provided with a detailed explanation of the process and same day estimate. The process from start to finish took five weeks. This would have been as little as two weeks if I did not have an arch top window. Curved windows take longer to build, at least for Ameristar. It took me a while to prepare the two rooms, so I was not in a big hurry. The installation was done yesterday. The crew was on time, polite, and from my view, was extremely careful and exhibited excellent attention to detail. The 10 windows were installed in one day. The crew cleaned up their mess very well and everything went according to plan. I am completely satisfied with the entire process. The windows are very elegant looking, not so green and make the house look better. I trust that the temperature in the south facing bedroom will level out with the rest of the house with the argon gas in the windows. Five stars all the way. Well done.

    Replaced all 22 windows in our home with Ameristar Windows. Heat and noise reduced significantly,…read moreespecially when jets from March Air Reserve Base fly over our home. Walked into Ameristar Riverside where windows are manufactured, spoke with Martha, production manager, before estimate. Got a brief tour of facility Looked at window samples. Martha answered lots of questions, took photos and picked up information. Impression: Extreme satisfaction. Larry provided detailed explanations with precise estimate and answered all questions in timely fashion. Installation crew led by Francisco were excellent with flawless precision. Work was clean. Crew was professional, courteous and accommodating. New windows are like getting a new pair of eyeglasses and having 20/20 vision again. The outside views are clean and sharp again. Highly recommend Ameristar Windows when considering window replacement. Rating: 5-plus stars/AAA***** Love our windows! Mahalo, Ameristar Windows!!! Randy

    The Window Guys - windowsinstallation - Updated August 2026

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