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    Alpha Enviro Tech

    4.6 (59 reviews)
    Open Open 24 hours

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    Jonathan W.

    We were so happy with our new windows. We have already noticed a reduction in outside noise and a savings to our energy bill by not having to run our AC as much. Our sales representative, Cody, went above and beyond by working on his birthday and ensuring that we got exactly what we wanted. The window installing crew led by Boris was very courteous and professional. Boris did a walkthrough with me with every window that they installed. I am impressed with Alpha EnviroTech and will look to them the next time we have a major project. Great work!

    Upstairs windows
    Rebecca M.

    I LOVE my new windows! A few of my old windows were starting to leak in heavy rain, so I decided to replace them with Alpha. Their sales person, David, came by to show me their product. He was great - explained everything and demonstrated how the windows they install block sunlight to significantly reduce heat in your home. I live in Southern CA so this is huge! I've already noticed a difference in indoor temperature on sunny days, it's much more comfortable during late afternoons when the sun used to heat up my family room and make it stuffy. I expect my electricity bill will go down this summer as a result as well. The double pain windows also reduce noise, and they are a breeze to open inward to clean. Installation was super fast! I had every window in my house replaced (19 total) and the team - led by David (a different David) and Marco - did it in 2.5 days. And they did a great job!! It was noisy, no doubt, but the team was friendly, courteous, and very respectful of my home & property. They cleaned up at the end of each day and made sure any trash was hauled away. My windows look so good! I was hesitant to do this because it's a big project and expense, but it was so worth it! The windows Alpha uses are specifically designed for CA weather, are reasonably priced, measured to fit your windows, and as mentioned above reduce the amount of sunlight blasting into your home in addition to reducing noise. I love them!! Thank you, Alpha - you did an amazing job!!

    I just had my house painted in Sacramento, CA. I think the business is expanding. I love my paint job. They did an amazing job. They also repaired stucco and dry rot areas of my trim. The guys were very easy to work with. Now in the beginning when they were trying to sell me the paint job and going over all the qualities this paint has I thought they were just putting on a show but since I've had my house painted my air conditioner gets the house sooooo cold! This paint is supposed to help insulate, be a moister blocker and fire repellent. The difference from before the house was painted is out of this world. My air conditioner would have to run all day to get this cold, now it's freezing in an hour. Plus it looks so nice . I've fallen back in love with my home. Next project: fix my yard up!

    Project progress photos

    Fantastic and Reliable. They completely the job timely and were extremely professional, punctual and easy to work with. The quality of their work is exceptional. I feel like I have a whole new house.

    Exterior of a new bay window: 3 separate windows: two "up/down" and one stationary.

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    3 years ago

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    Alex D.

    Thank you for such a great review.

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    2 years ago

    We are Very Satisfied with the whole process, Workmanship and Professionalism of the whole Team... from start to finish... Thank You

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    2 years ago

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    2 years ago

    Alpha Windows was excellent in their servicing and installing our windows. They were on time, polite and did an incredible job!

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    3 years ago

    Oscar was great! Professional,kind,patient. Great product to keep the summer heat out.. Thank you Oscar. keep up the great job!

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    Alpha Enviro Tech Reviews in Other Languages

    Ask the Community - Alpha Enviro Tech

    Review Highlights - Alpha Enviro Tech

    Henry, to his manager, Brandy, and to the expert installers were knowledgeable, professional and courteous @ all times.

    Mentioned in 6 reviews

    Read more highlights

    Legendary CalRep Windows and Doors

    Legendary CalRep Windows and Doors

    (178 reviews)

    We had all of the windows in our home replaced by Legendary Cal-Rep Windows in 2020, and…read moreunfortunately, our experience has been incredibly frustrating ever since. Shortly after installation, we discovered that the large staircase window leaked whenever it rained. Over the past five years, their "fix" was repeatedly applying messy exterior silicone that looked terrible and never solved the issue. At one point, they even suggested the leak might be caused by something within our home rather than the window itself. Eventually, they replaced the window and discovered the original installation they had ordered the wrong size window and had tried to just fill the gaps in and make it work. The second replacement was faulty, requiring yet another order and installation. Now, in 2026, the newest window was installed but still does not function. A Milgard representative inspected it and confirmed the issue is due to improper installation. Despite all of this, we still have no resolution, and there has been little to no proactive effort from the company to make things right. We are extremely disappointed with the product, installation, and overall service. Messages are ignored or we are told they are "checking on the status" but we never hear back. I will update this review if we EVER receive a proper resolution! I am in the customer service business myself, so to have a company treat you this way is so very disappointing.

    I am writing this review to warn everyone about the terrible quality and lack of accountability at…read moreLegendary Windows. I had an addition to my house and chose them for new windows. Because of the construction dust, I couldn't see the glass clearly at first. But after a thorough cleaning, I was shocked to find deep scratches all over the brand-new glass. Here is why you should stay away: Absurd Pricing: I was charged a staggering $15,000 for installation alone. They sent only two workers for two days. That is a lot of profit. Damaged Goods: They installed scratched, low-quality glass. Ghosting Customers: When I tried to reach out for a resolution, I found out that many other customers are reporting they "changed ownership" as an excuse to avoid taking responsibility for their previous mistakes. They take your money ($15k for labor!) and leave you with damaged products, then vanish. This is not a "Legendary" company; it's a predatory business. Save your money and your sanity--Stay away from Legendary Windows!  It wouldn't allow me to give 0 star

    TMC Windows & Doors - We are thrilled and honored to be voted the Best Window & Door Company in Orange County for 2024!

    TMC Windows & Doors

    (112 reviews)

    Great professional service. They were punctual to start the…read morefront door replacement. They explained the process before starting and we're considerate when the front door entry was limited access while they had the stucco dry. They also verified the small detail changes in the door handle and had me try the door several times before they left. I was impressed by the end result. Huge difference in a proper working door compared to before. Great attention to detail to explain the issue with the last door. I recommend their service for Great quality work.

    Very disappointed. Max, the manager, is very aggressive and argues as if he is right all the time…read more He does not listen to customers and does not offer a sincere apology. I made an appointment, and they completely stood me up. Later, they claimed they tried to call me or left a voicemail to change the appointment, which is not true. They never called or left any message. I have documentation as evidence, but I chose not to continue the conversation because Max kept defending himself and arguing instead of trying to resolve the issue. They also had my mailing address incorrect. I spoke with Max the day before my appointment to correct it, yet there were still multiple errors. Overall, the business seems very unorganized. The receptionist told me Max was in the office, so I was surprised when Max later claimed my appointment was with a different representative. This inconsistency felt very unprofessional and questionable. I took time out of my day for this appointment, and it is extremely rude and unprofessional that they never showed up. I do not recommend doing business with this company. There are many other businesses that provide much better customer service.

    California Replacement Windows

    California Replacement Windows

    (94 reviews)

    The windows I ordered are beautiful and top of the line (Simonton energy efficient vinyl windows),…read morebut the installation was poorly done. Within five months of the installation, I noticed the trim they installed on the inside along one of the two new windows had come almost entirely undone, to the point that there were huge openings and I could see the insulation foam they used in the gaps. I even had a bee somehow get through into the room thanks to the poor installation. For the amount paid, I was frustrated to realize they hadn't done a better job. Next time I'm in need of new windows etc., I'll be sure to look elsewhere. Update: There also appears to be gaps along the top exterior side of the other window - I heard some kind of large insect (we get alot of bees and wasps around my building) buzzing and trying to escape from inside there. Luckily the interior trim remained sealed on this window at least. But once again, I find myself disappointed with the installation.

    We needed one custom window made for a kitchen remodel, and California Replacement Windows was one…read moreof the only companies that would let us buy just one window. All other windows in the house had been replaced previously, and most companies had a minimum order quantity that didn't make sense for our project, or had long lead times that would have been problematic for the timeline of our project. The sales rep Tim was on time to his appointment, quickly assessed and measured the window, and got the process started. He was readily available for updates, and the window was available very quickly! The install was done well and matches the other windows in our house. We are VERY happy with Cal Replacement windows and will definitely use them again in the future for any other windows we might need.

    Alpha Enviro Tech - roofing - Updated May 2026

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