1. Window HQ

    1. Window HQ

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    Costa Mesa, CA

    Window HQ

    4.6 (20 reviews)
    Open 9:00 am - 5:00 pm
    Updated 1 week ago

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    3.5
    (55 reviews)
    Door Sales/Installation
    Responds in about 5 hrs
    4.5
    (1.1k reviews)
    Windows Installation
    Responds in about 10 mins
    5.0
    (255 reviews)
    Windows Installation
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    Adam M.

    Working with Justina and Murph was great. We are doing a full home remodel and selected Window HQ to order our Marvin windows from as well as have them do the installation. From start to finish they were complete professionals. They are very responsive and would make themselves available day and night to discuss our project. When it came time to install the windows / doors their crew did a great job. I wouldn't hesitate to recommend them for a job and would use them again. Can't say enough good things about the work and service they provided. Above and beyond.

    What a pleasant experience it was working with the owners Justina Sigle and her husband on picking out and installing a large "fiberglass" Picture Window by Marvin? When Mr. Sigle came out to measure my large old Picture Window that I wanted replaced, I also showed Mr. Sigle my granddaughter's vinyl window in her bedroom. In short, it would hang-up and wouldn't open. Interestingly, Mr. Sigle told me the vinyl window itself was still in good condition, but the slide mechanism just needed a little tweaking adjustment. Twenty minutes later, the window opened and closed perfectly. When I offered to pay Mr. Sigle for his time and effort for fixing the window, he refused to take my money. A couple days later I got a very fair price from Justina and placed my order for a large Picture Window by Marvin (i.e., sturdy fiberglass construction, Low E-3 glass with Argon Gas.) A few weeks later, Window H.Q.'s installer named Tim came out and demoed-out my damaged old window and installed my beautiful large Picture Window by Marvin. My new window is gorgeous and Tim and his crew did a great job with the installation process. In closing, I highly recommend the Window H.Q. Company in Costa Mesa to anyone looking for a quality replacement window for their home or office. And, very nice people to do business with. Bob S. Norco, CA

    Christian P.

    Great Business, very professional with top of the line products. They can offer also affordable solution.

    Very professional and efficient crew
    Medi B.

    Top notch team, we scheduled bill for measurements and he was on time and ready. Bill was very attentive to our needs and explained in detail the benefits and negatives of each type of window. Two weeks after measuring we scheduled the install. It was a crew of three and they knocked out the job in a few hours. Great work and highly recommended!

    My gorgeous doors

    I had my front doors designed and installed by Windows HQ and I couldn't be more thrilled. Murph and son Jake did an exceptional job....everyone that sees it is in awe. It transformed my entire entry way into relaxed joie de vivre as I look thru them into a beautiful entry garden. The finish work was extremely important to me as I am such a perfectionist and it couldn't be happier, inside and out. I give Windows HQ 10 stars.

    The five vinyl windows were replaced by these casements.  Worth every penny!

    I embarrassed to say, it has taken me over two years to write this review. My tardiness in no way conveys how happy I am with the product or service I received from HQ Windows. Prior to selecting HQ I searched high and low for a quality window company I felt I could trust as I was doing a full home remodel. I interviewed about 10 different companies. I landed with Justina at HQ and she was on spot with everything. The Marvin product she suggested was an excellent choice and I could not be happier. I would recommend this company to anyone who desired high quality products with excellent service. Bravo Justina! I still adore my windows :)

    I worked with Tim and Joy at window HQ and they were fantastic. Came out quickly, gave me a reasonable price, and my windows/slider were installed a little over two weeks after I ordered them. They look fantastic.

    Finished Project

    This review is long overdue! We were in the final stages of a whole house remodel and wanted to replace a sliding glass door and garden window in order to install some sort of folding doors. I did lots of research and then ran across a company called Window HQ, only a couple miles from our house. I went to their store and met Justina, who was professional, courteous and very knowledgeable about product options. She introduced me to Murph, who gave me a tour of his workshop and it was plain to see he is highly skilled and organized. I had Murph come out for an estimate and we decided on getting bi-fold doors made by WinDor in Brea. When the doors arrived, Murph's team did the demo and installed our new doors. They protected the interior of the house and cleaned up at every stage as they went from start to finish. My wife and I are totally satisfied with the great work they did and we love our doors. We've had several parties and have opened up all the doors making our living room part of the covered patio...perfect! Our friends and family all say what an improvement the doors make. Murph and Justina have high-integrity and we couldn't have had a better experience from start to finish. We highly recommend and trust Window HQ.

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    2 years ago

    Very helpful and kind staff members! I am very pleased with the assistance and knowledge from the staff here at window hq!

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    5 years ago

    Business owner information

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    Justina S.

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    Ask the Community - Window HQ

    Review Highlights - Window HQ

    Justina spent a long time with us describing all the beautiful Marvin (and other brand) windows and doors at Window HQ.

    Mentioned in 8 reviews

    Read more highlights

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    OC Window Experts

    OC Window Experts

    5.0
    (382 reviews)

    I had a great experience with OC Window Experts from start to finish. Their team was incredibly…read morehelpful, and the customer service was outstanding throughout the entire process. The pricing was very fair and competitive, which made the decision even easier. Mike, the owner, was honest, transparent, and extremely helpful every step of the way. He took the time to answer all my questions and made sure I felt comfortable with everything. The installers, Willy and J.C., were professional, polite, and very respectful of my home. They did a fantastic job and made sure everything was clean and perfect before they left. I highly recommend OC Window Experts to anyone looking for quality work, great service, and fair pricing!

    It could not possibly have been an easier and more satisfying experience hiring OCWE to update our…read more60 year old windows and slider on our house. We met with Mike (the owner) at his showroom who went through every option and provided clear details for the products we had to choose as well as the process from start to finish. We went with Mike's product recommdation, Anlin Windows, based on those details which was clearly the right choice. Mitch (the ops manager/job forman) came to our home at the appointed time, took the measurements and advised what we needed to do to assist in the installation process which was basically moving any large objects away from the windows, both inside and out. In fact, we were contacted every step of the way from the owners, office staff and field staff and advised of the progress of our order. We were notified of the windows arrival at thier warehouse 6 weeks later and set up an installation date. JC and Willy arrived on time and got started right away after thanking me for clearing thier work areas as thoroughly as I did after the intial walk through. They did an amazing job. They were courteous, clean, respectul, and completely professional in every way. They had every window plus a very large slider installed before the end of the day and once again complimented and thanked me making their work areas accessible and easy to work in. They also left every area they worked in cleaned up as if they were never there. A rarety these days! JC then provided me with some tips specfic to any potential screen door squeeks and advised me to apply something on the screen to prevent any accicdents in the form of me or anyone else walking through that screen. I used a couple of thin strips of duct tape. The windows/screens are obviously new and almost transparent. Especially after living with the previous extruded metal OG windows for as long as we did. He showed me the features of each window and door, explained how the locks worked on each and answered any questions I had. There was minor 1 hiccup. During the unpacking process of the windows, JC pointed out to me that 1 of windows would not be able to be installed as it arrived broken. Not the window itself but the top right corner of the exterior vinyl overlap. The damage was not seen at the warehouse as it was under the protective card board/plastic and must have happened during the shipping process from the factory. I know from experience these things happen and it is how they are reacted to that seperates the good companies from the bad. OCWE took care of it without hesitation and insisted I deduct $500 from the intial installation balance until the replacment was installed and the job completely finished. The replacement was rush ordered. I was told it would take 2 weeks to get it. I got a call extactly 2 weeks later and we set up the installation appointment. The final window was just installed in under 30 minutes by JC and Willy as I had requested they come back for the aformentioned reasons. My wife and I could not be more pleased and satisfied with the choices we made specific to the company, product, pricing and professionalism of every team, top down from sales, ops and installation. We would do it again in a heartbeat! I highly recommend OCWE for window/slider upgrades in every way and when you do, make sure you specifically request JC and Willy to install them. You will not be sorry!

    Moore Replacements

    Moore Replacements

    4.8
    (361 reviews)

    Mike and his team were great! Very knowledgeable and professional. Highly recommend for all your…read moreglass, windows or sliding door needs. I called to see ask about my windows since the seal on the inside of our double panel window was coming off. I thought I would need to get new windows but Mike said all I needed to do was to get new glass. He came to give me to estimate and do the measurements. Afterwards, the glass order is placed and another schedule is needed to do the work. Altogether, we got 5 windows repair. On the day of, Mike even fixed our sliding door! The door has been so hard to open over the past 18 years. He knew exactly what was wrong with it and fixed it right then there. The difference from before and after is literally night and day. Thank you for everything Mike.

    I had an amazing experience working with Mike and his team. I originally hired them to replace the…read moreglass on my front door with reeded glass to create a more elevated, private, and luxury feel--and they absolutely nailed it. The final result was exactly what I envisioned, if not better. The quality of their work impressed me so much that I brought them back to redo my kitchen cabinet fronts and convert them to glass as well. Once again, they delivered flawlessly. The craftsmanship, attention to detail, and overall execution were top-notch. Throughout the entire process, Mike was communicative, professional, and very easy to work with. He was also fair and competitive with pricing, which made the experience even better. It's hard to find people who consistently deliver at this level, and Mike exceeded expectations every time. I highly recommend him and his team--you won't be disappointed.

    American Vision Windows

    American Vision Windows

    4.5
    (1.1k reviews)

    We had our windows installed last week and we absolutely love them. It makes the house so much…read morenicer. Our installers Jim, Carlos, Irving and Jr were very professional. Jim walked us through at the end and answered all of our questions. We also enjoyed working with Ski who showed us the differences between different types of windows and he gave us great recommendations. Overall we are happy with the results and we referred our neighbors and friends.

    I recently purchased a home and began researching companies to replace the original windows. After…read moreasking for recommendations in my local Facebook community group, several people suggested American Vision Windows, and the feedback seemed generally positive. Based on those recommendations, I decided to contact the company for a quote. I received a call the same day from Craig, and unfortunately, the experience was very disappointing. I found his tone to be rude, brash, and unwelcoming, especially toward a first-time customer who has no knowledge of the window replacement process and was simply looking for guidance. This is exactly where good customer service should make a difference. After speaking with him and comparing other companies and quotes, I quickly decided to end the call and take my business elsewhere. Because of this interaction, I will be spending my $5,000+ with a company that values professionalism and treats potential customers with courtesy and respect.

    Window HQ - windowsinstallation - Updated July 2026

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